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CM SAF: Service Message

NS / Dec2017

NoDateService MessageStatus
12113 Dec 2017

New CM SAF products provided via EUMETCast and termination of currently
provided products
In early 2018 CM SAF will discontinue the processing of the currently provided
SEVIRI based Environmental data record (EDR) of fractional cloud cover (CFC)
and surface incoming shortwave radiation (SIS).
They will be replaced by so-called Interim Climate Data Records (ICDRs), which
are a continuation related to the respective Thematic Climate Data Records
(TCDRs), helping to support climate monitoring applications, The CFC and SIS
monthly mean products will be based on the same algorithm basis as the
parameters in the corresponding TCDRs (CFC from CLAAS-2 and SIS from
SARAH-2 ). The grid will change to a regular 0.05°x0.05° latitude/longitude grid
and the internal file structure (number of data layers, name of fields) is going to be
different as well. The file format will remain netcdf-4 as before.

More information on the changes, and links to related documents describing the
product can be found

Test data are available at ftp://ftp-cmsaf.dwd.de/ICDR_SEVIRI/eumetcast/
and users are recommended to adapt their applications accordingly.

12027 Oct 2017Change in CM SAF SEVIRI based EDR processing from January 2018 onwards
As announced earlier, CM SAF will change its parts of the EDR product portfolio:
SEVIRI based Environmental Data Records (EDR) will be replaced with Interim
Climate Data Records (ICDR) which are the follow up of the respective parameters
of the Thematic Climate Data Records (TCDR) CLAAS-2 and SARAH-2. As for the
currently generated EDRs, derived parameters are CFC, CTO, SIS and SID.
Additionally, the direct normalized irradiance (DNI) will be provided. The ICDRs use
the same algorithm basis as the respective TCDRs and have identical grid
and format (0.05°x0.05°lat/lon grid, netcdf-4 format). The change will be effective
for products from January 2018 onwards. The processing of the currently available
EDR products will be stopped at that time. Test data are available on our ftp server
and users are recommended to adapt their applications accordingly. More details on
the products and links to the test data and documentation can be found
11910 Oct 2017Release of Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite
Data - HOAPS 4.0 by CM SAF
The Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite data record
(HOAPS) is a completely satellite based climatology of precipitation, evaporation
and freshwater budget (evaporation minus precipitation) as well as of latent heat
flux, total column water vapour, near surface specific humidity and near surface
wind speed over the global ice free oceans. All variables are derived from
recalibrated and intercalibrated measurements from SSM/I and SSMIS passive
microwave radiometers, except for the SST, which is taken from AVHRR
measurements. The data record includes multi-satellite averages and an efficient
sea ice detection procedure. Main changes in this version are a prolonged time
series, now containing data for the time period from July 1987 until December
2014, the utilisation of an updated SSM/I and SSMIS FCDR, the provision of
uncertainty estimates for latent heat flux, evaporation, near surface specific
humidity and near surface wind speed and the implementation of a 1D-Var retrieval
scheme for the retrieval of total column water vapour and near surface wind speed.
Other retrieval algorithms remain unchanged compared to HOAPS 3.2. All HOAPS
products have global coverage, i.e., within ±180° longitude and ±80° latitude and
are only defined over the ice-free ocean surface. The products are available as
monthly averages and 6-hourly composites on a regular latitude/longitude grid with
a spatial resolution of 0.5° x 0.5° degrees. Along with the data and the uncertainty
estimates, a comprehensive documentation including user manual, algorithm
descriptions, reprocessing layout and extensive validation studies, are provided.
The data record can be ordered via the Web User Interface. More information
on the data record is available from the
DOI page: 10.5676/EUM_SAF_CM/HOAPS/V002
11822 Sept 2017

Release of CM SAF TOA Radiation GERB/SEVIRI Data Record - Edition 2
The TOA Radiation GERB/SEVIRI record from CM SAF provides estimates of the
Top Of Atmosphere broadband radiative fluxes derived from the Geostationary Earth
Radiation Budget (GERB) and the Spinning Enhance Visible and InfraRed Imager
(SEVIRI) sensors onboard the Meteosat Second Generation satellites. The outgoing
radiation is reported in terms of TOA Reflected Solar (TRS) and TOA Emitted
Thermal (TET) fluxes. This second edition is the improved and extended follow-up
of the first edition of the record available from CM SAF under
DOI 10.5676/EUM_SAF_CM/TOA_GERB/V001.
The main improvements are:

  1. In addition to the all sky fluxes, the edition 2.0 also provides an estimate of
    the corresponding clear sky fluxes.
  2. A correction is applied for the GERB and SEVIRI sensor ageing.
  3. Data from the MSG1, MSG2 and MSG3 satellites have been homogenized.
  4. Data from the backup MSG satellite has been used to reduce the gaps in the
    data record.
  5. The temporal coverage is extended to 1st Feb. 2004 - 30th April 2015.

The original GERB level 2.0 High Resolution (HR) and SEVIRI level 1.5 observations
have been processed to estimate solar and thermal fluxes in hourly boxes on the
GERB HR grid. From the hourly values, the daily mean, the monthly mean and the
monthly mean diurnal cycle are estimated. Finally, the data is regridded on a regular
latitude-longitude grid covering 70°N - 70° and 70°W-70°E, with a spatial resolution
of 0.1°.

11714 Sept 2017Release of CM SAF ClOud Fractional Cover dataset from METeosat First and
Second Generation - Edition 1 (COMET Ed. 1)
This Thematic Climate Data Record (TCDR) provides cloud fractional cover
(CFC) derived from the Meteosat Visible and InfraRed Imager (MVIRI) on board
the Meteosat First Generation (MFG) and the Spinning Enhanced Visible and
InfraRed Imager (SEVIRI) onboard the Meteosat Second Generation (MSG)
satellites. The covered time period ranges from January 1991 to December 2015,
thus includes MFG 4 to 7 and MSG 1 to 3. Original thermal radiances were
inter-calibrated by the European Organisation for the Exploitation of Meteorological
Satellites (EUMETSAT) using the High Resolution Infrared Radiation Sounder
(HIRS) as a reference. The Meteosat CFC is presented as hourly, daily and monthly
composites on a 0.05°x0.05° grid covering the entire Meteosat disk (Africa and
Europe). The CFC data is derived from two Meteosat heritage channels by use of
an advanced Bayesian retrieval algorithm. It employs continuous cloud scores,
which are built on a contemporaneous clear sky background inversion. The
Meteosat CFC is characterized by comparability to the SYNOP-based long-term
CFC observations carried out at WMO ground stations. The Meteosat CFC is
therefore useful to supplement the ground-based CFC estimates in areas with low
station density or high spatio-temporal CFC variability. Along with the data, a
comprehensive documentation including user guide, algorithm descriptions and
extensive validation studies, is given.
The data record can be ordered via the Web User Interface. More information
on the data record is available from the
DOI page: 10.5676/EUM_SAF_CM/CFC_METEOSAT/V001
11614 Sept 2017Release of CM SAF Land SUrface Temperature dataset from METeosat First
and Second Generation - Edition 1 (SUMET Ed. 1)
This Thematic Climate Data Record (TCDR) provides Land Surface Temperature
(LST) derived from the Meteosat Visible and InfraRed Imager (MVIRI) on board
the Meteosat First Generation (MFG) and the Spinning Enhanced Visible and
InfraRed Imager (SEVIRI) onboard the Meteosat Second Generation (MSG)
satellites. The covered time period ranges from January 1991 to December 2015,
thus includes MFG 4 to 7 and MSG 1 to 3. Original thermal radiances were
inter-calibrated by the European Organisation for the Exploitation of Meteorological
Satellites (EUMETSAT) using the High Resolution Infrared Radiation Sounder
(HIRS) as a reference. The LST is derived from Meteosat by use of single-channel
LST retrieval algorithms suitable to generate LST data across Meteosat satellite
generations. This TCDR includes two different LST products: the Statistical Land
Surface Temperature product generated with a statistical LST retrieval approach
and a Physical Land Surface Temperature product based on radiative transfer
calculations. The LST is presented as hourly data and as monthly averaged diurnal
cycle composites on a 0.05°x0.05° grid covering the entire Meteosat disk (Africa
and Europe). A summary of the retrieval algorithms is provided by Duguay–Tetzlaff et al. (2015). Along with the data, a comprehensive documentation including user
guide, algorithm descriptions and extensive validation studies, is given.
The data record can be ordered via the Web User Interface. More information
on the data record is available from the
DOI page: 10.5676/EUM_SAF_CM/LST_METEOSAT/V001
11514 June 2017Release of SARAH-2: Surface Solar Radiation Data Set from MVIRI and
SEVIRI – Edition 2
The second edition of the Surface Solar Radiation Data Set - Heliosat (SARAH-2)
is a satellite-based climate data record of the solar surface irradiance, the surface
direct irradiance (direct horizontal and direct normalized), the sunshine duration,
spectral information, and the effective cloud albedo derived from satellite-
observations of the visible channels of the MVIRI and the SEVIRI instruments
onboard the geostationary Meteosat satellites. The data are available from 1983
to 2015 and cover the region ±65° longitude and ±65° latitude (±60° longitude and
±60° latitude for the spectral information). The products are available as monthly
and daily means, and as 30-min instantaneous data (sunshine duration is available
as monthly and daily sum) on a regular latitude/longitude grid with a spatial
resolution of 0.05° x 0.05° degrees. The data record is complemented with a
comprehensive documentation of the algorithms used and the generation of the
dataset. Validation studies and user guidance are available as well.
The data record can be ordered via the Web User Interface.
More information on the data record is available from the
DOI page: 10.5676/EUM_SAF_CM/SARAH/V002
11411 April 2017Update on changes in order handling for large orders
In October 2016 CM SAF announced changes in the order handling for requests larger than 1 TB (see Service Message 102). After monitoring the process for several months, CM SAF decided to implement a checking of order sizes during the ordering process. At any time of the processing (between placing the order and availability of the order on the CM SAF ftp-server) a maximum total order size of 1 TB per user is allowed. As long as the active orders stay below a total data amount of 1 TB new orders can be placed. When placing the order in the order cart, the probable size is checked against the maximum order size and the already ordered data volume. Information will be provided at all times during the ordering process. As soon as an order has been processed, the data amount of the active orders is adjusted accordingly and users can place new requests. However, it is highly recommended to download the previously placed order(s) before submitting a new request, as there is still a time limit of 14 days for the download on the ftp-server.
11316 March 2017GERB/SEVIRI based EDR products are discontinued from March 2017 onwards
The 3rd Continuous Development and Operations phase (CDOP-3) of the Satellite
Application Facility on Climate Monitoring started in March 2017. Generally, CM SAF
will continue to develop and deliver improved Climate Data Records (CDRs) of
Essential Climate Variables (ECV) related to the energy and water cycle and
corresponding operational versions. However, new products will be developed and
provided and a few currently available parameters are discontinued. With the start of
the CDOP-3 in March 2017 the generation of the GERB/SEVIRI-based parameters
TRS and TET will be terminated. Products will be provided until February 2017. All
TRS and TET EDR data from Jan 2004 to Feb 2017 will remain available via the
Web User Interface. CM SAF will continue the processing on a best-effort basis
as long as possible and products from March 2017 onwards will be available to the
users as auxiliary data via the Web User Interface. Users are recommended to use
the products from March 2017 onwards with caution as no validation of these
parameters will be done by CM SAF.
We apologize for any inconvenience this may cause!
28 Mar 2017:
service message updated
11216 March 2017Status of ATOVS based EDR products from March 2017 onwards
The 3rd Continuous Development and Operations phase (CDOP-3) of the Satellite
Application Facility on Climate Monitoring started in March 2017. Generally CM SAF
will continue to develop and deliver improved Climate Data Records (CDRs) of
Essential Climate Variables (ECV) related to the energy and water cycle and
corresponding operational versions. However, new products will be developed and
provided and a few currently available parameters are discontinued. With the start of
the CDOP-3 in March 2017 the ATOVS-based EDR products of HTW, HLW and
HSH are discontinued and are not part of the CM SAF product portfolio anymore.
The products from Jan 2004 to Feb 2017 will remain available to the users via the
Web User Interface. Additionally, CM SAF will continue the processing on a
best-effort basis as long as possible and products from March 2017 onwards will be
available to the users as auxiliary data via the Web User Interface. Users are
recommended to use the products from March 2017 onwards with caution as no
validation of these parameters will be done by CM SAF. Further note the service
message No. 105 from 11 November 2016. We apologize for any inconvenience
this may cause!
11103 March 2017Release of CLARA-A2: CM SAF cLoud, Albedo and surface RAdiation dataset
from AVHRR data - Edition 2
The CLARA-A2 record provides cloud properties, surface albedo and surface
radiation parameters derived from the AVHRR sensor onboard polar orbiting NOAA
and METOP satellites. This second edition is the improved and extended follow-up
of the first version of the record (CLARA-A1) which now covers a 34 year time
period (1982-2015). CLARA-A2 features a range of cloud products: cloud mask,
cloud top temperature/pressure/height (CTT/CTP/CTH), cloud thermodynamic
phase (CPH), cloud optical thickness (COT), cloud particle effective radius (REF)
and cloud water path (CWP). Cloud products are available as monthly and daily
averages and also as daily resampled global products (Level 2b) for individual
satellites. Cloud parameter results are also presented as single-parameter
distributions (frequency histograms of CTP, CTT, COT, REF and CWP) and
multi-parameter distributions (joint frequency histograms of COT, CTP and CPH
for daytime conditions). Surface albedo is presented as monthly and pentad (5 day)
averages and is derived using all available data during the studied period. Surface
radiation products are provided as monthly averages for the downwelling shortwave
(including also daily averages) and the down- and upwelling longwave components.
All monthly and daily averages are available on a 0.25°x0.25° global grid. Surface
albedo and cloud products are also provided in two equal area grids with a
resolution of 25 km x 25 km covering the polar regions. Daily resampled cloud
products (level 2b) are provided in a global grid with a resolution of 0.05°x0.05°.
For the latter, also a probabilistic cloud mask is added as an experimental product.
The data record can be ordered via the Web User Interface. More information
on the data record is available from the
DOI page: http://dx.doi.org/10.5676/EUM_SAF_CM/CLARA AVHRR/V002
11020 Feb 2017Release of new FCDR of Microwave Imager Radiances (Oct 1978 – Dec 2015)
The CM SAF FCDR of Microwave Imager Radiances comprises inter-calibrated
brightness temperatures (BTRs) from the SMMR, SSM/I and SSMIS radiometers. It
covers the time period from October 1978 to December 2015 including all available
data from the SMMR radiometer aboard Nimbus–7, the SSM/I radiometers aboard
F08, F10, F11, F13, F14, and F15 and the SSMIS radiometers aboard F16, F17, and
F18. It provides homogenised and inter-calibrated BTRs in a user friendly data
format. All available raw data records have been reprocessed to a common
standard, starting with the calibration of the raw Earth counts, to ensure a completely
homogenized data record. The data processing accounts for several known issues
with the instruments and corrects calibration anomalies due to along-scan
inhomogeneity, moonlight intrusions, sunlight intrusions, and emissive reflector.
Furthermore, the inter-calibration model incorporates a scene dependent inter-
satellite bias correction and a non-linearity correction to the instrument calibration.

The data record can be ordered via the Web User Interface. More information
on he data record is available from the
DOI page: http://dx.doi.org/10.5676/EUM_SAF_CM/FCDR_MWI/V003
10926 Jan 2017Release of CM SAF Top of Atmosphere Radiation MVIRI/SEVIRI data record
The CM SAF Top of Atmosphere Radiation MVIRI/SEVIRI Data Record provides a
homogeneous satellite-based climatology of the TOA Reflected Solar (TRS) and
Emitted Thermal (TET) radiation in all-sky conditions. The continuous monitoring of
these components of the Earth Radiation Budget is of prime importance to study
climate variability and change. The MVIRI and SEVIRI instruments on board the
METEOSAT First and Second Generation satellites are combined to generate a long
Thematic Climate Data Record covering a period of time of 32 years, from
1 February 1983 to 30 April 2015. The TOA radiation products are provided as daily
mean, monthly mean and monthly averages of the hourly integrated values (diurnal
cycle). The data is provided on a regular grid at a spatial resolution of 0.05°x0.05°
and covers the region between ±70° longitude and ±70° latitude. In addition to
covering a long time period, the MVIRI/SEVIRI data record is also featured by
excellent spatial and temporal samplings.
The data record can be ordered via the Web User Interface. More information on the
data record is available from the DOI page:
http://dx.doi.org/10.5676/EUM_SAF_CM/TOA_MET/V001
10814 Dec 2016Safe mode of Meteosat 10 15-17 October 2016 affecting CM SAF top of
atmosphere EDR products
In the timeframe 15 October 2016, 12:34 UTC to 17 October 2016, 12:45 UTC, no
Meteosat-10 SEVIRI data had been available due to a satellite anomaly. The
spacecraft experienced a switch to safe mode and EUMETSAT recovered the
satellite and switched back to operations on 17 October 2016, 13 UTC. This affects
the SEVIRI based CM SAF EDR top of atmosphere products (TRS, TET). No daily
mean products are available for the time period15-17 October 2016. Users should
be aware that the monthly mean and monthly mean diurnal cycle products are based
on a reduced amount of data.
10717 Nov 2016CLAAS-2 cloud top level (CTO) products under investigation
The monthly mean cloud top level products (CTOmm*), which contain monthly mean
cloud top pressure, height and temperature, of the recently released CM SAF
CLAAS-2 data record are currently under investigation. It was found that the
conversion from daily mean CTO to monthly mean CTO data was erroneous. We
are currently characterizing the error in more detail. All other products (including
the daily mean CTO products) are not affected.
We recommend all users of CLAAS-2 monthly mean CTO data to be cautious
when interpreting the data. Please monitor the CM SAF webpage regularly until
updates on this issue are published.
10615 Nov 2016Test data for upcoming ICDR SEVIRI available on ftp-server
As announced in Service Message 100, CM SAF will change its product portfolio
from providing SEVIRI based Environmental Data Records (EDR) to the provision
of Interim Climate Data Records (ICDR) for CFC, CTO, SIS and SID. Additionally,
the direct normalized irradiance (DNI) will be provided. In order to help our users
to adapt to the new formats test data are now available on our ftp server. More
details on the products and links to the test data can be found
27 Oct 2017: For new information
concerning the
change see
Service Message
120
5 Dec 2016:
Updated test files
for SIS and SID
on ftp server
19 Dec 2016:
Service message
updated,
additional
parameter DNI
available
10511 Nov 2016Users recommended to use ATOVS-based EDR products (HTW, HLW, HSH)
from October 2016 onwards with caution
The ATOVS-based EDR products HTW, HLW and HSH (version 350) are usually
based on data from ATOVS on board Metop-A and Metop-B (see the Product User
Manual
for more details). On 17 October 2016 an anomaly occurred on channel 15 of
Metop-B AMSU-A and resulted in the data being unusable. As a consequence the
products are based on Metop-A data only since mid-October 2016. A validation
of the HTW, HLW and HSH products for October 2016 showed that the data are
within specifications. However, users are recommended to use the products
from mid-October 2016 onwards with caution. CM SAF will monitor the
behavior of the used satellite data and ATOVS-based products closely.
10407 Nov 2016Safe mode of Meteosat 10 15-17 October 2016 affecting CM SAF cloud and
surface radiation EDR products
In the timeframe 15 October 2016, 12:34 UTC to 17 October 2016, 12:45 UTC, no
Meteosat-10 SEVIRI data had been available due to a satellite anomaly. The
spacecraft experienced a switch to safe mode and EUMETSAT recovered the
satellite and switched back to operations on 17 October 2016, 13 UTC. This affects
the SEVIRI based CM SAF EDR products of cloud and surface radiation (CFC,
CTH, CTP, CTT, SIS, SID). No daily mean product is available for 16 October
2016. Users should be aware that the daily mean for 15 and17 October 2016 as
well as the monthly mean and monthly mean diurnal cycle products are based on
a reduced amount of data.
10325 Oct 2016CLAAS-2 bugfix
A bug in the new CLAAS-2 dataset has been identified and fixed: Due to a software
problem, certain daily means contained data of a different day. Only daily and
monthly means in December 2014 and December 2015 are affected. Diurnal cycles
and histograms for these months as well as all data for the remaining time period
are not affected. The erroneous data was replaced at the time of the release of this
service message. Users who already downloaded CLAAS-2 data will be contacted
by the CM SAF User Help Desk individually.
1024 Oct 2016Change in order handling for large orders
Several Climate Data Records have been released during the last years and more
long data records will be released in the near future. As a result individual orders
are becoming much larger on average. This has two consequences: The download
time of large orders is quite high for our users and users might not be able to
download their complete order within the given time frame of 14 days. Additionally,
together with the much appreciated increase in registered users and number of
orders, the load on the CM SAF ftp server becomes quite high from time to time.
This might lead to longer wait times until an order can be processed. As a
consequence, the order handling for orders larger than 1 TB has been changed.
While smaller orders are automatically processed as before, orders larger than
1 TB will be set on hold until the user has been contacted by the CM SAF User
Help Desk to clarify the way forward for the specific order request.
For more details on possible solutions please check the
CM SAF Frequently Asked Questions.
please see Service message 114 for new procedure
1014 Oct 2016

Availability of new CM SAF TCDR: CM SAF CLoud property dAtAset using
SEVIRI (CLAAS-2)
The CLAAS-2 record provides cloud properties derived from the SEVIRI sensor
onboard METEOSAT second generation (MSG) satellites.
The data records can be ordered via the Web User Interface. More information
on the dataset is available from the
DOI page http://dx.doi.org/10.5676/EUM_SAF_CM/CLAAS/V002

This second edition is the improved and extended follow-up of the first version of the
record (Stengel et al., 2014;
CLAAS-1 DOI:10.5676/EUM_SAF_CM/CLAAS/V001).

In order to ensure a homogeneous data basis, the solar SEVIRI channels of MSG-1,
MSG-2 and MSG-3 were intercalibrated (Meirink et al, 2013) with MODIS Aqua
before applying the cloud retrievals. CLAAS-2 features 12 years (2004-2015) of
cloud mask/type, cloud top temperature/pressure/height, cloud phase as well as
cloud microphysical properties such as optical thickness, effective droplet radius and
cloud water path. The data are available on native SEVIRI resolution, i.e. 15 minutes
repeat cycle and 3km (nadir) to 11km (edge of the field of view) spatial resolution.
In addition, spatio-temporal averages of the above mentioned cloud properties are
included: Daily and monthly averages and monthly histograms on a 0.05° x 0.05°
grid as well as monthly mean diurnal cycles on a 0.25° x 0.25° grid.
The advancements compared to CLAAS-1 are for example:

  1. extended MSG measurement record used with better calibration,
  2. improvements made to the retrieval algorithm leading to products with
    higher quality and
  3. increased temporal resolution (15 Minutes).

Along with the data, a comprehensive documentation including user guide, algorithm
descriptions, reprocessing layout and extensive validation studies is provided. A
summary on the CLAAS-2 characteristics and a comprehensive evaluation of the
results are currently documented and is planned to be published soon. With
CLAAS-2, regional and large scale cloud processes at temporal scales of minutes to
years can be studied. SEVIRI-based surface radiation products, which were part of
CLAAS-1, will now be released in a separate dataset (SARAH-2) soon.

See and also
SM 103 and SM 107
10016 Sept 2016Changes in CM SAF EDR product portfolio from 2017 onwards
We would like to inform our users about upcoming changes in the CMSAF EDR product portfolio from January 2017 onwards and with the start of the next project phase CDOP-3 in March 2017, respectively. The changes affect the SEVIRI-, GERB- and ATOVS based routinely provided EDR products. More details are given
Test data for SEVIRI ICDR now available, see Service Message 106
9902 March 2016New version of CM SAF ATOVS-based products HTW, HLW and HSH
from October 2015 onwards
From October 2015 onwards a new ATOVS retrieval scheme (version 350) has
been implemented in order to allow processing of Metop-A data. Channels 7 and
8 of AMSU-A are out of specifications and have been removed from the input
stream of the ATOVS processing. This required the implementation of an updated
IAPP, now in version 4, kindly provided by the University of Wisconsin. In
consequence the upper tropospheric temperature products exhibit changes in
quality between September and October 2015, leading to generally smaller bias
and RMSE. However, at 200-300 hPa the quality decreased but is still within the
service specification. Please also check the ChangeLog webpage for the history of
the version numbers of the products.
Users having a standing order for the affected products will need to re-new their
standing order if they want to further receive the products.
9829 Feb 2016Safe mode of Meteosat-10 15-18 November 2015 and decontamination of
Meteosat-10 SEVIRI in December 2015 affecting CM SAF top of atmosphere
EDR products
In the timeframe 15 November 2015, 03:36 UTC to 18 November 2015, 12 UTC,
no Meteosat-10 SEVIRI data had been available due to a satellite anomaly. The
spacecraft experienced a switch to safe mode and EUMETSAT recovered the
satellite and switched back to operations on 18 November 2015, 12 UTC. In the
timeframe 08 December 2015, 08 UTC to 14 December 2015, 09:30 UTC, no
Meteosat-10 SEVIRI data had been available due to a decontamination of the
instrument by EUMETSAT. Further details on the decontamination are available
via the EUMETSAT News page. These two events affected the CM SAF top of
atmosphere EDR products (TRS, TET), which use SEVIRI data. There are no
daily mean products for TRS and TET available for the time frame 15-18 November
2015 and 08-14 December 2015. As a consequence, the monthly mean as well as
the monthly mean diurnal cycle products are based on a reduced amount of input
data for November and December 2015.Users should be aware of the effects of a
reduced amount of data when interpreting the monthly products of November and
December 2015.
9713 Jan 2016Decontamination of Meteosat-10 SEVIRI in December 2015 and effect on
CM SAF SEVIRI based EDR cloud and surface radiation products
In the timeframe 08 December 2015, 08 UTC to 14 December 2015, 09:30 UTC,
no Meteosat-10 SEVIRI data had been available due to a decontamination of the
instrument by EUMETSAT. During this time SEVIRI data from Meteosat-8 had
been disseminated. Further details are available via the EUMETSAT News page.
This affects the SEVIRI based CM SAF EDR cloud and surface radiation products
(CFC, CTH, CTP, CTT, SIS, SID). For the cloud products SEVIRI data from
Metosat-8 have been used to generate daily mean products during the
decontamination phase. A combination of data from Meteosat-8 and
Meteosat-10 has been used to generate the monthly products. However, a
generation of the surface radiation parameters during the time period of the
decontamination has not been possible due to missing top of atmosphere input data.
There are no daily mean products for SID and SIS available for the time frame
09-13 December 2015. As a consequence, the monthly mean as well as the monthly
mean diurnal cycle products for the surface radiation parameters are based on a
reduced amount of input data for December 2015. Also, the daily mean products
for the days of the switches are based on a reduced number of input data. Users
should be aware of the effects of different data sources for the cloud products and
reduced amount of data when interpreting the SEVIRI-based EDR products from
December 2015.
9621 Dec 2015Delay in processing of ATOVS-based EDRs of HTW, HLW and HSH
There is currently a delay in the processing of the ATOVS-based products of HTW,
HLW and HSH. Data are only available until September 2015. Since end of
September 2015 one of the AMSU-A channels on Metop-A shows an increase in
noise level hampering the retrieval of the parameters. As this channel is used in the
currently applied version of the IAPP retrieval algorithm, no retrievals from Metop-A
can be generated, which strongly reduces the data basis for the generation of the
CM SAF ATOVS based products and led to the decision to stop the processing at
CM SAF. CM SAF is currently implementing an update of the retrieval algorithm,
which has been provided by the algorithm developers at CIMSS/University of
Wisconsin. After careful testing and checking the influence of omitting the affected
channel from the retrieval, we will decide on the way forward. We will inform our
users if/when the products will become available again in due time. We apologize for
any inconvenience.
products
available again,
see service message 99
9510 Dec 2015Outage of Meteosat-10 SEVIRI data in November 2015 and effect on
CM SAF SEVIRI based EDR cloud and surface radiation products
In the timeframe 15 November 2015, 03:36 UTC to 18 November 2015, 12 UTC,
no Meteosat-10 SEVIRI data had been available due to a satellite anomaly. The
spacecraft experienced a switch to safe mode and EUMETSAT recovered the
satellite and switched back to operations on 18 November 2015, 12 UTC. This
affects the SEVIRI based CM SAF EDR products of cloud and surface radiation
(CFC, CTH, CTP, CTT, SIS, SID). No daily mean products are available for 15-17
November 2015. Users should be aware that the daily mean for 18 November as
well as the monthly mean and monthly mean diurnal cycle products are based on
a reduced amount of data.
9414 Oct 2015CM SAF TOA EDR products using GERB-3 data from May 2015 onwards
It is our pleasure to announce that, from May 2015 onward, the CM SAF TOA
radiation products are again based on observations from the GERB-3 instrument,
the instrument on Meteosat-10. During the period from January 2013 to April 2015,
the CM SAF TOA EDR products have been derived from SEVIRI only due to an
outage of the de-spin mirror of the GERB-3 instrument. Note that during the GERB-3
outage, GERB operational service has been transferred to GERB-1, the instrument
on Meteosat-9, but science data for this period are still not released by the GERB
team
9307 Oct 2015Updates of the SARAH data set
The following updates are available for the Surface Solar Radiation Data Set -
Heliosat (SARAH) (doi: 10.5676/EUM_SAF_CM/SARAH/V001):
1) Extended spatial coverage in winter towards higher latitudes from 2006 to 2013
2) Extended temporal coverage, now including 2014
3) Corrected hourly-averaged SIS data for November 2010
The updated data are not available through the CM SAF Web User Interface. If you
are interested in receiving the updated data, please contact
contact.cmsaf@dwd.de.
Further details on the updates are provided in
updated
information in
pdf file available
9225 Jun 2015

Availability of new CM SAF FCDR: Fundamental Climate Data Record of
SSM/I / SSMIS Brightness Temperatures
The CM SAF Fundamental Climate Data Record (FCDR) of SSM/I and SSMIS
brightness temperatures covers the time period from July 1987 to December 2013
including all available data from the six SSM/I radiometers aboard F08, F10, F11,
F13, F14, and F15 and from the three SSMIS radiometers aboard F16, F17, and
F18.

The SSM/I part remains unchanged compared to the existing CM SAF SSM/ I
FCDR (http://dx.doi.org/10.5676/EUM_SAF_CM/FCDR_SSMI/V001).

The new FCDR provides homogenised and inter-calibrated brightness temperatures
in a user friendly data format. The improved homogenization and inter-calibration
procedure ensures the long term stability of the FCDR for climate related
applications. All available raw data records have been reprocessed to a common
standard, starting with the calibration of the raw Earth counts, to ensure a
completely homogenized data record. The data processing accounts for several
known issues with the SSM/I and SSMIS instruments and corrects calibration
anomalies due to along-scan inhomogeneity, moonlight intrusions, sunlight
intrusions, and emissive reflector. Furthermore, the inter-calibration model
incorporates a scene dependent inter satellite bias correction and a non-linearity
correction to the instrument calibration. The data files contain all available original
sensor data and metadata to provide a completely traceable climate data record.
Inter-calibration and Earth incidence angle normalization offsets are available as
additional layers within the data files in order to keep this information transparent to
the users. The data record is complemented with radiometer sensitivities, quality
flags, surface types, and Earth incidence angles.
The data records can be ordered via the Web User Interface. More information
on the dataset is available from the DOI page
http://dx.doi.org/10.5676/EUM_SAF_CM/FCDR_MWI/V002

9106 Mar 2015Effects of decontamination of Meteosat-10 SEVIRI instrument from
02-08 December 2014 on CM SAF EDR products TRS and TET.
The decontamination of the SEVIRI instrument onboard Meteosat-10 (see also
service message 89) affected the processing of the SEVIRI-based CM SAF
Environmental Data Records (EDR) of TRS and TET. There are no daily mean
products available for the time frame 02-08 December 2014. As a consequence the
monthly mean as well as the monthly mean diurnal cycle products are based on a
reduced amount of input data for December 2014. Users should be aware of the
effects when interpreting the SEVIRI-based EDR products TRS and TET from
December 2014.
9025 Feb 2015Availability of new CM SAF CDR: The Surface Solar Radiation Data Set –
Heliosat (SARAH)
The Surface Solar Radiation Data Set - Heliosat (SARAH) is a satellite-based
climatology of the solar surface irradiance (SIS), the surface direct normalized
irradiance (DNI) and the effective cloud albedo (CAL) derived from satellite
observations of the visible channels of the MVIRI and SEVIRI instruments onboard
the geostationary Meteosat satellites. The data are available from 1983 to 2013 and
cover the region ±65° longitude and ±65° latitude. The products are available as
monthly, daily, and hourly averages on a regular latitude/longitude grid with a spatial
resolution of 0.05° x 0.05°. The data set is complemented with a comprehensive
documentation of the applied algorithms as well as validation studies and user
guidance.
The data can be ordered via the Web User Interface. More information on the
dataset can be found via the
DOI http://dx.doi.org/10.5676/EUM_SAF_CM/SARAH/V001.
see also service message 93
8910 Jan 2015Decontamination of Meteosat-10 SEVIRI instrument from 02-08 December 2014
and effects on CM SAF EDR products CFC, CTT, CTH, CTP, SIS and SID.
From 02 December to 08 December 2014 EUMETSAT performed a decontamination
of the SEVIRI instrument onboard Meteosat-10 (for further information please check
the EUMETSAT News page
http://www.eumetsat.int/website/home/News/DAT_2418124.html). During this time no Meteosat-10 SEVIRI data had been available.
Meteosat-10 SEVIRI data became available again at 09:30 UTC on 08 December
2014. This affected the processing of the SEVIRI-based CM SAF Environmental
Data Records (EDR) of CFC, CTT, CTH, CTP, SIS and SID. Although Meteosat-8
replaced Meteosat-10 during this time, the SEVIRI-based CM SAF cloud and surface
radiation products have not been calculated during the time frame of the satellite’s
decontamination. There are no daily mean products available for the time frame
03-08 December 2014. The daily mean product for 02 December 2014 is based on a
reduced amount of input data. The monthly mean as well as the monthly mean
diurnal cycle products will be based on a reduced amount of input data for
December 2014 as a consequence of the decontamination phase. Users should be
aware of the effects when interpreting the SEVIRI-based EDR products from
December 2014. Users might be interested to have a look at the products based on
AVHRR data covering the CM SAF baseline area (30°N-80°N, 60°W-60°E) of CFC,
CTT, CTH, CTP and SIS as an alternative data source during the decontamination
phase.
8825 Nov 2014Availability CM SAF CDR of cloud fraction from SEVIRI in high temporal
resolution
The SEVIRI cloud mask dataset has been generated and released by the
EUMETSAT Satellite Application Facility on Climate Monitoring (CM SAF) to
enhance the cloud property dataset CLAAS. The SEVIRI cloud mask dataset
contains the cloud mask in 15 minutes temporal resolution. The dataset is pixel
based, where a SEVIRI pixel is about 4x4 km² in size, depending on location in
SEVIRI's field of view. The data are provided with regional coverage from ± 60°
N/S and ± 60° E/W. Inter-calibrated effective radiances of Meteosat-8 and 9 form
the basis of the cloud mask dataset which spans 9 years from 2004 to 2012. The
dataset is complemented with a comprehensive documentation of the algorithms
used and the generation of the dataset. Validation studies and user guidance are
available as well. With this dataset, small, regional and large scale cloud processes
at temporal scales of hours to years can be studied. In addition, the dataset is
suited for all applications in which a conservative cloud mask is essential (e.g. land
surface, aerosol or trace gas retrievals).
The data can be ordered via the Web User Interface.
More information on the dataset can be found via the DOI
http://dx.doi.org/10.5676/EUM_SAF_CM/CMA_SEVIRI/V001.
8725 Nov 2014

New Version of CM SAF SEVIRI based EDR products from September 2014
onwards
CM SAF uses the super computer at ECMWF for the processing of its
environmental data records. During this summer ECMWF changed from an IBM
system to a Cray XC30 system (further information on ECMWF’s computing
facilities can be found here). This required a migration of the CM SAF processing
system to the new environment. To reflect the change in the processing system
and the required adaptations in the processing environment, CM SAF introduced
new version numbers for the affected products. CM SAF’s cloud and surface
radiation products based on SEVIRI are available with the following new version
numbers from September 2014 onwards:

ProductNew version
number
CFC350
CTH350
CTP350
CTT350
SIS350
SID350

Please also check the ChangeLog webpage for the history of the version numbers
of the products.
Users having a standing order for the affected products will need to re-new their
standing order if they want to further receive the products.

8606 Nov 2014

New Version of CM SAF AVHRR based EDR products from September 2014
onwards
CM SAF uses the super computer at ECMWF for the processing of its
environmental data records. During this summer ECMWF changed from an IBM
system to a Cray XC30 system (further information on ECMWF’s computing
facilities can be found here). This required a migration of the CM SAF processing
system to the new environment. To reflect the change in the processing system
and the required adaptations in the processing environment, CM SAF introduced
new version numbers for the affected products. CM SAF’s cloud and surface
radiation products as well as the surface albedo product are available with the
following new version numbers from September 2014 onwards:

ProductNew version
number
CFC350
COT340
CPH350
CTH350
CTP350
CTT350
CWP340
SAL340
SIS330

Please also check the Change Log webpage for the history of the version numbers
of the products.
Users having a standing order for the affected products will need to re-new their
standing order if they want to further receive the products.

8507 Sept 2014New Version (340) of CM SAF ATOVS EDR products HTW, HLW and HSH for
products from March 2014 onwards available
CM SAF upgraded the CM SAF ATOVS EDR processing environment in order to be
able to handle ATOVS data from the EUMETSAT operated Metop-B satellite. These
changes included an update to AAPP version 7.5 for the pre-processing of the
ATOVS data and an upgrade to IAPP 4.0, the software package used for
temperature and humidity profile retrieval developed at the University of Wisconsin.
At the same time the processing environment for the ATOVS EDR processing has
been moved to ECMWF’s new supercomputing system. These changes resulted in a
new version number for the ATOVS EDR products for products from March 2014
onwards (new version number: 340). Users having a standing order of the affected
products will need to re-new their standing order if they want to further receive the
products. Until March 2014 ATOVS data from Metop-A and the NOAA satellites has
been processed in different combinations during the time series, with NOAA-16 and
Metop-A being the most recent combination used for the HTW, HLW and HSH
products. As announced in Service Message 84 MHS on Metop-A entered into a
fault mode in late March 2014 and could be recovered by EUMETSAT during the
second half of May 2014. The CM SAF ATOVS EDR products are based on
Metop-B and NOAA-16 data during the time period of the Metop-A recovery. Since
Metop-A became available again the products have been generated using ATOVS
data from both, Metop-A and Metop-B satellites. Unfortunately, the NOAA-16
satellite stopped sending data on the morning of 6 June 2014. On June 9 2014
NOAA decommissioned NOAA-16 due to a major spacecraft anomaly (see e.g.
POES status page). Thus, there is currently only data from satellites in the
morning orbit used in the generation of the CM SAF ATOVS EDR products.
new version of
products
available, see
service message
99
8426 May 2014Delay in availability of CM SAF ATOVS EDR products HTW, HLW and HSH
The current version of the CM SAF ATOVS EDR products is based on ATOVS data
from the NOAA-16 and the Metop-A satellites. On 26 March 2014 the MHS
instrument on Metop-A entered into a fault mode during preparations for an
out-of-plane manoeuvre. The recovery of the sensor took until 21 May 2014
resulting in about a two months gap in data availability. This sensor is mandatory for
the generation of the CM SAF ATOVS EDR products of HTW, HLW and HSH.
During the recovery procedure at EUMETSAT, CM SAF had stopped the processing
of the ATOVS EDR products. CM SAF is currently working on the implementation
of Metop-B data into the processing environment in order to fill the data gap and
continue the processing. During the time frame of the Metop-A failure the products
will be based on Metop-B and NOAA-16 data. After Metop-A became available
again, it is planned to continue processing using both Metop satellites in
combination with NOAA-16. We will inform our users as soon as the ATOVS
EDR products become available again and give more details on the implemented
changes. We apologize for any inconvenience caused by the delay in data
availability.
products
available again
with new version
number, see
service message 85
8328 April 2014Decontamination of Meteosat-10 SEVIRI instrument from 14 - 21 January 2014
and effects on CM SAF EDR products TRS and TET
From 14 January to 21 January 2014 EUMETSAT performed a decontamination of
the SEVIRI instrument onboard Meteosat-10 (for further information please check
the EUMETSAT News page
http://www.eumetsat.int/website/home/News/DAT_2087886.html).
During this time no Meteosat-10 SEVIRI data had been available. This results in the
non-availability of the daily mean TRS and TET products for those 8 days. The users
are warned that the monthly mean products, as well as the monthly mean diurnal
cycle products, for January 2014 are based on a reduced number of days. This
sampling problem is known to introduce significant random difference with respect to
the true monthly means (1st to 31th January). A quantitative evaluation of this effect
will be provided in the next validation report for the TOA radiation products.
8229 Jan 2014Availability of CM SAF Daylight Data set
The CM SAF Daylight Data Set is a satellite-based climatology derived from
satellite-observations from the visible channel of the Meteosat satellites. The data
are available from 1983 to 2011 and cover the region ±65° longitude and ±65°
latitude. The products are available as monthly and daily means on a regular latitude/longitude grid with a spatial. resolution of 0.05° x 0.05° degrees. The data
can be ordered via the Web User Interface Further information on the data set
can be found via its DOI: 10.5676/EUM_SAF_CM/DAL_MVIRI_SEVIRI/V001
8127 Jan 2014Decontamination of Meteosat-10 SEVIRI instrument from 14-21 January 2014
and effects on CM SAF EDR products CFC, CTT, CTH, CTP, SIS and SID.
From 14 January to 21 January 2014 EUMETSAT performed a decontamination of
the SEVIRI instrument onboard Meteosat-10 (for further information please check
the EUMETSAT News page
http://www.eumetsat.int/website/home/News/DAT_2087886.html).
During this time no Meteosat-10 SEVIRI data had been available. Meteosat-10
SEVIRI data became available again at 09:30 UTC on 21 January 2014. This
affected the processing of the SEVIRI-based CM SAF Environmental Data Records
(EDR) of CFC, CTT, CTH, CTP, SIS and SID. Although Meteosat-9 replaced
Meteosat-10 during this time, the SEVIRI-based CM SAF cloud and surface
radiation products have not been calculated during the time frame of the satellite’s
decontamination. There are no daily mean products available for the time frame
14-20 January 2014. The daily mean product for 21 January 2014 is based on a
reduced amount of input data. The monthly mean as well as the monthly mean
diurnal cycle products based on SEVIRI will be based on a reduced amount of
input data for January 2014 as a consequence of the decontamination phase.
Users should be aware of the effects when interpreting the SEVIRI-based EDR
products from January 2014.
Users might be interested to have a look at the products based on AVHRR data
covering the CM SAF baseline area (30°N-80°N, 60°W-60°E) of CFC, CTT, CTH,
CTP and SIS as an alternative data source during the decontamination phase.
8006 Jan 2014Decontamination of SEVIRI on Meteosat-10 in July 2013 and effect on the
CM SAF TOA EDR products
A decontamination of Meteosat-10 was performed between 1st and 9th of July 2013.
This results in the non availability of the daily mean TRS and TET products for those
9 days. The users are warned that the monthly mean products, as well as the
monthly mean diurnal cycle products, for this month are based on a reduced number
of days (10th to 31st of July). This sampling problem is known to introduce
significant random difference with respect to the true monthly means (1st to 31th
July). A quantitative evaluation of this effect is provided in the validation report for
the TOA radiation dataset.
7925 Oct 2013
Availability of SEVIRI based climate data record
The first edition of the SEVIRI cloud property dataset has recently been generated
and released by the EUMETSAT Satellite Application Facility on Climate
Monitoring (CM SAF). The CLAAS dataset contains cloud properties at various
processing levels from pixel-based data (approx. 4km spatial resolution) to daily
and monthly averages (0.05° x 0.05° latitude-longitude grid). In addition, spatially
resolved monthly mean diurnal cycles (0.25° x 0.25°) and monthly histograms
(0.05° x 0.05°) are available. Input to the retrieval schemes were inter-calibrated
effective radiances of Meteosat-8 and 9, allowing the current version of the dataset
to homogeneously span 8 years from 2004 to 2011. Along with the data, a
comprehensive documentation of the algorithms used, the generation of the dataset
as well as validation studies and user guidance are available, with a brief summary
given in Stengel et al. (2013) . With this dataset, small, regional and large scale
cloud processes at temporal scales of hours to years can be studies. Subsequently
to the derivation of the cloud properties, surface albedo (pentad and monthly
means) and radiation budget products are inferred (daily and monthly means). The
data can be ordered via the Web User Interface. Further information on the data
set can be found via its DOI: 10.5676/EUM_SAF_CM/CLAAS/V001
7808 Oct 2013Re-processing of SEVIRI-based SIS and SID EDR products for the time period
March 2012 to April 2013
As described in service message 68 the SEVIRI based SIS and SID EDR products
have been affected by a bug in the software for products from 01 March 2012 to
30 April 2013. Following the request from several users CM SAF re-processed the
affected SEVIRI-based products. The Meteosat-9 based products for the time period
01 March 2012 to 31 December 2012 are available via the Web User Interface
with version number “335”, the products based on Meteosat-10 data from January
2013 onwards are available with version number “340”. We recommend our users
who have ordered the products for the affected time period to replace the products
with the re-processed data.
7726 Sep 2013CF standard of METEOSAT based FTH data record
In order to increase consistency with CF standards the meta data for the
METEOSAT based FTH data record (CM-139) has been adapted slightly.
The data itself has not been changed.
7622 Aug 2013
Availability of CM SAF ATOVS Climate Data Record
The CM SAF ATOVS data set offers 13 years (01 January 1999 - 31 December
2011) of water vapour and temperature satellite-derived global products. Different
parameters generated simultaneously are available: vertically integrated water
vapour (kg/m2), vertically integrated water vapour (kg/m2) and mean temperature
(K) in 5 layers, specific humidity (g/kg) and temperature (K) on 6 levels. Also
available are number of valid observations and an uncertainty estimate. The data set
was derived from ATOVS onboard the NOAA satellites, NOAA-15, NOAA-16,
NOAA-17, NOAA-18, NOAA-19 and onboard the European Metop-A satellite.
ATOVS is composed of three instruments: HIRS, AMSU-B/MHS and AMSU-A.
After application of a kriging routine, the products are available as daily and monthly
means on a cylindrical equal area projection of 90km×90km. Grid information is
given for centre position. Layers are (hPa): 200-300, 300-500, 500-700, 700-850,
850-surface. Levels are: 200, 300, 500, 700, 850, 1000 hPa. The data can be
ordered via the Web User Interface. Further information on the data set can be
found via its DOI: 10.5676/EUM_SAF_CM/WVT_ATOVS/V001
7524 July 2013Decontamination of Meteosat-10 SEVIRI instrument from 1-9 July 2013 and
effects on CM SAF EDR products CFC, CTT, CTH, CTP, SIS and SID.
From 1 July to 9 July 2013 EUMETSAT performed a decontamination of the SEVIRI
instrument onboard Meteosat-10 (for further information please check the
EUMETSAT News page
http://www.eumetsat.int/website/home/News/DAT_2045911.html).
During this time no Meteosat-10 SEVIRI data had been available. Meteosat-10
SEVIRI data became available again at 09:15 UTC on 9 July 2013. This affected the
processing of the SEVIRI-based CM SAF Environmental Data Records (EDR) of
CFC, CTT, CTH, CTP, SIS and SID. Although Meteosat-8 replaced Meteosat-10
during this time, the SEVIRI-based CM SAF cloud and surface radiation products
have not been calculated during the time frame of the satellite’s decontamination.
There are no daily mean products available for the time frame 01-08 July 2013. The
daily mean product for 09 July 2013 is based on a reduced amount of input data.
The monthly mean as well as the monthly mean diurnal cycle products based on
SEVIRI will be based on a reduced amount of input data for July 2013 as a
consequence of the decontamination phase. Users should be aware of the effects
when interpreting the SEVIRI-based EDR products from July 2013.
7424 July 2013Release of CM SAF Climate Data Record of Free Tropospheric Humidity from
METEOSAT
The CM SAF Free Tropospheric Humidity (FTH) data set from METEOSAT2-5 and
METEOSAT7-9 provides the mean relative humidity over a deep layer of the
troposphere within ±45° longitude and ±45° latitude. The retrieval was developed at
Centre National de la Recherche Scientifique (CNRS) and - after transfer to CM SAF
- CM SAF and CNRS jointly extended the time series into the SEVIRI era. The
product is defined under clear sky and low level cloud conditions and is available at
3-hourly temporal resolution and as monthly averages (straightforward averages
over all valid observations) on a regular latitude/longitude grid with a spatial
resolution of 0.625° × 0.625°. The temporal coverage of the data sets ranges from
July 1983 to December 2009. The METEOSAT6 period, March 1997-May 1998, is
not covered. The FTH layer position and thickness depends on atmospheric
condition, in particular water vapour content in the free troposphere. The clear sky
radiance is provided as auxiliary information layer. The data can be ordered via the
Web User Interface.
7322 July 2013Release of CM SAF Climate Data Record of SNS based on MVIRI data
The data set of Surface net shortwave radiation (SNS, CM-69) covers 23 years
(1983-2005) of monthly means in 0.03°x 0.03°resolution. The product is based
on MVIRI data from Meteosat First Generation satellites (Meteosat-2 to
Meteosat-7) and covers an area of about 70°S - 70°N and 70°W - 70°E. The data
can be ordered via the Web User Interface. Further documentation including the
validation report and user manual is available at http://www.cmsaf.eu, menu
"Publication and Documentation".
7218 June 2013Release of CM SAF Fundamental Climate Data Record of SSM/I Brightness
Temperatures
The CM SAF Fundamental Climate Data Record of SSM/I Brightness Temperatures
covers the time period from July 1987 to December 2008 including all available data
from the six SSM/I radiometers aboard F08, F10, F11, F13, F14, and F15. It
provides homogenised and inter-calibrated brightness temperatures in a user
friendly data format. SSM/I data are used for a variety of applications, such as
analyses of the hydrological cycle and related atmospheric and surface parameters,
as well as remote sensing of sea ice. The improved homogenization and inter-
calibration procedure ensures the long term stability of the FCDR for climate related
applications. All available raw data records have been reprocessed to a common
standard, starting with the calibration of the raw Earth counts to ensure a completely
homogenized data record. The new inter-calibration model incorporates a scene
dependent inter satellite bias correction and a non-linearity correction to the
instrument calibration. Furthermore, the data processing accounts for several known
issues with the SSM/I instruments and corrects calibration anomalies due to along
scan inhomogeneity, moonlight intrusions, and sunlight intrusions. The data files
contain all available original sensor data and metadata to provide a completely
traceable climate data record. Inter-calibration and Earth incidence angle
normalization offsets are available as additional layers within the data files in order to
keep this information transparent to the users. The data record is complemented
with radiometer sensitivities, quality flags, surface types, and Earth incidence angles.
The FCDR is available from the Web User Interface.
Detailed information about the data processing, the file format and content and the
performance of the FCDR are available in the Algorithm Theoretical Basis Document
(ATBD) , the Product User Manual (PUM) and the Validation Report, respectively.
Extension of
FCDR time
series available,
see service
message 92
7115 June 2013Release of a new dataset of radiation budget at top of atmosphere: CM SAF
TOA radiation “GERB” dataset
The CM SAF TOA radiation GERB dataset provides monthly mean, daily mean and
monthly mean diurnal cycle of the TOA Reflected Solar (TRS) and TOA Emitted
Thermal (TET). The product is based on the observations of the Geostationary
Earth Radiation Budget (GERB, Harries et al., 2005) instruments, on board the
Meteosat Second Generation. Additionally, data from the Spinning Enhanced
Visible and Infra Red Imager (SEVIRI) and from the Cloud and Earth Radiant
Energy System (CERES) are used, respectively, to fill gaps in the GERB data
record and for Northern latitudes coverage.
This dataset complements the global datasets produced by the CERES team, in
particular in providing a better observation of the diurnal cycle of the TOA radiation.
Potential applications include the validation of the radiative scheme in NWP and
climate models in particular in their dynamical dimension (e.g. the convection
process) and the study of cloud and aerosol forcing.

The dataset currently covers 7 years (February 2004 to January 2011) and is
provided on a sinusoidal equal-area grid with (45 km)² resolution. Comparisons of
these data against the CERES products have shown that the products are within
the required accuracy.

Details on the products in general, on retrieval methods and physical basis as well
as on quality can be found in the Product User Manual, the ATBD and the Validation Report.

The products are now available for ordering via Web User Interface. For more information contact our User Help Desk.
7003 June 2013

CLARA A1 cloud physical processing error and consequences on data usage
Recently, an error in the CLARA-A1 cloud physical property processing was
detected. The radiative transfer look-up tables, used for the retrieval of particle
effective radius from the 3.7 micrometer AVHRR channel (channel 3b), were based
on spherical instead of hexagonal ice crystals. The use of spheres causes too low
retrieved effective radiation. The magnitude of the underestimation depends on the
viewing and illumination geometry as well as on the cloud optical properties
themselves, and cannot be characterized in a simple way. The erroneous ice particle
effective radius directly affects the ice water path. Since the cloud thermodynamic
phase retrieval is coupled with the optical thickness and effective radius retrieval, the
cloud phase is also affected. Finally, the liquid water path is affected indirectly
through the changing cloud phase. Investigation of the consequences for the official
CLARA-A1 cloud products lead to the following conclusions:

  • Fractional Cloud Cover (CFC, CM-05): no effect
  • Joint Cloud property Histogram (JCH, CM-11): minor effect (product can still be
    used)
  • Cloud Top Level (CTO, CM-17): no effect
  • Cloud Optical Thickness (COT, CM-34): minor effect (product can still be

    used)

  • Cloud Phase (CPH, CM-38): small effect, less than the accuracy requirement

    (product can still be used)

  • Liquid Water Path (LWP, CM-43): small effect, less than the accuracy requirement (product can still be used)
  • Ice Water Path (IWP, CM-47): considerable effect (product cannot be used)

Products from all AVHRR sensors are affected, except those that had channel 3a
(1.6 micrometer) active instead of channel 3b. This means that products derived
from Metop-A, NOAA-17, and NOAA-16 from October 2000 until April 2003 are
not affected. No intermediate reprocessing will take place. The next release,
CLARA-A2, is planned in 2016.

6924 May 2013

Availability of TRS and TET EDR products based on Meteosat-10 data
Complementing the Service Message 67, we are pleased to announce that the Top
Of Atmosphere (TOA) radiation EDR products are also generated from Meteosat-10
since 1st of January 2013. The products are TOA Reflected Solar (TRS) and TOA
Emitted Thermal fluxes in monthly mean, daily mean and monthly mean diurnal
cycle formats. As the Geostationary Earth Radiation Budget (GERB) instrument on
Meteosat-10 is still under calibration/validation, it is not used and the CM SAF
products are currently based on the SEVIRI instrument data (which are converted in broadband radiation through empirical regressions which have been derived from
SEVIRI and GERB observations on Meteosat-9). A message will be issued when the
GERB data will be used again in the CM SAF TOA radiation products.

The products from January 2013 onwards are provided with a new version number
and new data source in the filename. Information on the latest version number and
changes in the products are also published via the ChangeLog of the CM SAF web
page. Users with a standing order of the affected products will need to re-new their
standing order if they want to further receive the products.

see service
message 94
6815 May 2013

New version of SIS and SID EDR products from May 2013 onwards
A bug has been discovered in a routine used for the calculation of the CM SAF SIS
EDR products (from SEVIRI and AVHRR) and the SID EDR product (SEVIRI only).
A wrong "out of range" limit for the surface albedo values lead to truncation of the
surface albedo in the calculation of the SIS and SID products. This in turn leads to
too optical thick clouds over land surfaces and hence to a negative bias is SIS and
SID. This leads to an inhomogeneity (break) in the SEVIRI SIS and SID operational products (V330+331). The values between 01 March 2012 and 30 April 2013 exhibit
a significant negative bias in comparison to the whole time series. Also the AVHRR
based SIS products are affected from V302 onwards till V310, i.e. starting from
01 Jan 2009.

The bug has been fixed for the new versions for products from 01 May 2013
onwards. The new version numbers are 340 for the MSG/SEVIRI based SIS and SID product and 320 for the AVHRR-based SIS product.

The affected products from May 2013 onwards are provided with a new version
number. Information on the latest version number and changes in the products are
also published via the ChangeLog of the CM SAF web page. Users with a standing
order of the affected products will need to re-new their standing order if they want
to further receive the products

reprocessed
affected data
for SEVIRI
based products,
see service
message 79
6727 Mar 2013

New version of SEVIRI based CM SAF EDR products from January 2013
onwards

We are pleased to announce the availability of updates for the CM SAF cloud (CFC,
CTH, CTP, CTT) and surface radiation (SIS, SID) EDR products based on SEVIRI
data. The updates were implemented for products from 01 January 2013 onwards.

In July 2012 EUMETSAT successfully launched the next MSG satellite, renamed
to Meteosat-10, which took over the operational 0°-service from Meteosat-9 on 21
January 2013. Pre-operational data are already available from Meteosat-10 since
mid-December 2012. CM SAF changed to using Meteosat-10 data from 1 January
2013 onwards for the SEVIRI based EDR products in order to use data from one
single sensor for all data within one month (i.e., using data from the parallel
dissemination until Meteosat-10 is the operational satellite). At the same time,
CM SAF had to update from using the NWC SAF MSGv2010 to the NWC SAF
MSGv2012 software package for the generation of the SEVIRI based cloud EDR
products in order to process the new input data. Users should be aware that the
satellite data before 21 January 2013 do have a pre-operational status. The data
coverage available for the daily mean products of 20 and 21 January 2013 is slightly reduced compared to the expected coverage.
The affected products from January 2013 onwards are provided with a new version

number. Information on the latest version number and changes in the products are

published via the ChangeLog of the CM SAF web page. Users with a standing order
of the affected products will need to re-new their standing order if they want to
further receive the products.

new version
for SIS and
SID products,
see service
message 68
6630 Nov 2012

Availability of CM SAF CLARA A1 dataset
We are pleased to announce that the CM SAF CLouds, Albedo and RAdiation dataset based on AVHRR GAC data edition 1 (CLARA A1) is now released. The dataset
CLARA A1 covers the time period 1982-2009 for the cloud and surface albedo
products and 1989-2009 for the surface radiation products. The dataset comprises
the following parameters:
Surface radiation
– Surface Incoming Shortwave Radiation (SIS, CM-52)
– Surface Net Shortwave Radiation (SNS, CM-67)
– Surface Outgoing Longwave Radiation (SOL, CM-74)
– Surface Downward Longwave Radiation (SDL, CM-81)
– Surface Net Longwave Radiation (SNL, CM-88)
– Surface Radiation Budget (SRB, CM-95)
– Cloud Radiative Effect SW (CFS, CM-100)
– Cloud Radiative Effect LW (CFL, CM-101)
Albedo product
– Broadband Surface Albedo (SAL, CM-60)
Cloud products
– Fractional Cloud Cover (CFC, CM-05)
– Joint Cloud property Histogram (JCH, CM-11)
– Cloud Top level (CTO, CM-17)
– Cloud Optical Thickness (COT, CM-34)
– Cloud Phase (CPH, CM-38)
– Liquid Water Path (LWP, CM-43)
– Ice Water Path (IWP, CM-47)

The products are available via the Web User Interface. Please be aware that it
will take until mid-December 2012 until the complete data set for the surface
radiation products SNS, SRB and CFS will be available. All other products can
already be ordered. The documentation of the dataset (ATBD, PUM, Validation
Report) is available via the Publication & Documentation section of the
CM SAF Webpage.

see service

message 70

6515 Sep 2012

Change in CM SAF EDR product portfolio from March 2012 onwards
We would like to inform our users that the CM SAF product portfolio of environmental data records (EDR) has changed with the start of the CM SAF CDOP 2 phase in
March 2012. As already announced in the

and the CM SAF some products have been discontinued.
The following products will be continued for reference dates from March 2012
onwards:


Table 1 List of CM SAF EDR products which are continued in CDOP-2

Data Source Parameter
SEVIRI CFC, CTP, CTH, CTT, SIS, SID
SEVIRI+GERBTRS, TET
AVHRRCFC, CTP, CTH, CTT, CWP, CPH, COT, SIS, SAL
ATOVSHTW, HLW, HSH

Table 2 gives the list of products which are no longer generated as EDR products at CM SAF after the product reference date of 29 February 2012. The products processed until the reference date 29 February 2012 will remain available to our users via
the CM SAF Web User Interface.

Table 2 List of CM SAF EDR products which are discontinued in CDOP-2

Data SourceParameter
SEVIRICOT, CPH, CTY, CWP, SAL, SDL, SNL, SNS, SOL, SRB
AVHRRCTY, SDL, SNL, SNS, SOL, SRB
Merged
SEVIRI+AVHRR
SAL, SDL, SIS, SNL, SNS, SOL, SRB
DIARAD/Virgo
(TOA radiation)
TIS
new version
for SEVIRI
based products,
see service
message 67;

new version
for SIS
AVHRR
product, see
service
message 67
6415 Sep 2012Availability of delayed CM SAF Environmental Data Records (EDR)
We are pleased to announce that the delayed CM SAF EDR products are available
again for our users. CM SAF has changed the NWP interface from GME model data
to using ECMWF forecast data as background information in the generation of most
CM SAF EDR products. The changes and following validation including a review of
the products unfortunately took longer than anticipated. The high quality of the
products has been confirmed by external reviewers on the basis of validation results
and the approval to make the data available to our users has been received.

The following products have been affected by the change in NWP background data:
• AVHRR and SEVIRI based cloud and surface radiation products
• ATOVS based water vapour and temperature products.

Data are available from March 2012 onwards and the service specifications
concerning the timeliness and availability of the products are met again.

The affected products from March 2012 onwards are provided with a new version
number. Information on the latest version number and changes in the products are
published via the ChangeLog of the CM SAF web page. Users with a standing
order of the affected products will need to re-new their standing order if they want
to further receive the products.

The EDR products for the top of atmosphere radiation (TRS and TET) are not
affected by this change.
6315 June 2012Delay in processing of several CM SAF Environmental Data Records (EDR)
Unfortunately we have to inform our users that we currently do have a delay in the
processing of several CM SAF EDR products. CM SAF is presently changing the
NWP interface from GME model data to using ECMWF forecast data as
background information in the generation of most CM SAF EDR products. The
changes and following validation including a review of the products take longer than anticipated. Therefore, we currently do not meet the service specifications
regarding timeliness requirements.

The following products are affected by the change in NWP background data and the resultant delay in data provision:
•AVHRR and SEVIRI based cloud and surface radiation products
•ATOVS based water vapour and temperature products.

The EDR products for the top of atmosphere radiation (TRS and TET) are not
affected by this change.
see service message 64
6220 Oct 2011Limitations of usage of SIS CDR daily mean products before 1995
Analysis of the MVIRI based SIS CDR daily mean products showed some limitations
in the usability of the product before 1995. More details on the problem can be found
6130 June 2011MAGICSOL climate data set of effective cloud albedo and solar surface irradiance released
The data sets of Effective Cloud Albedo (CAL, CM-111), Surface Incoming
Shortwave Radiation (SIS, CM-54) and Direct Irradiance at Surface (SID, CM-106)
cover 23 years (1983-2005) of monthly, daily and hourly means in 0.03°x 0.03°
resolution. The products are based on MVIRI data from Meteosat First Generation
satellites (Meteosat-2 to Meteosat-7) and cover an area of about 70°S - 70°N and
70°W - 70°E. It is one of the first solar radiation data sets based on MVIRI provided
with high temporal and spatial resolution with climate quality. The data can be
ordered via the CM-SAF Web User Interface. Further documentation including
the validation report and user manual is available at http://www.cmsaf.eu, menu
"Publication and Documentation".
6030 Mar 2011Important information for users of continuous orders
Users having placed a continuous order are kindly asked to check whether their
ordered product has been affected by the introduced change in version numbers in
January 2011 (see service message 59). A continuous order is always valid for the
most recent version of the product valid at the day the continuous order is set up.
Data for the chosen product is sent to the user continuously as long as this specific
version number of the product is valid. If we update/change our product which is
indicated by a change in the version number we kindly ask our users to re-new their
continuous order. Our system is currently not able to do the change automatically.
We apologize for any inconvenience and thank our users for their understanding.
5930 Mar 2011

New version of several AVHRR and SEVIRI based CM SAF products from
January 2011 onwards
We are pleased to announce the availability of several updates for CM SAF cloud
and surface radiation products based on AVHRR and SEVIRI data. The updates
were implemented for products from 01 January 2011 onwards. The following
list gives a summary of the main changes in the processing from January 2011
onwards:

  • Implementation of the NWC SAF PPS 2010 software for AVHRR based cloud
    products replacing the NWC SAF PPS 2009 version.
  • Implementation of new SAL software for AVHRR and SEVIRI based products.
    SAL now supports a correction of satellite-observed reflectances for variation
    resulting from topography changes. The snow albedo retrieval has also been
    amended as per requirements of the ORR-B review outcome. The topography
    correction is only applied to the AVHHR data but not to SEVIRI data.

According to the versioning approach of CM SAF the version numbers of all products being directly or indirectly affected by the introduced updates are changed from
January 2011 onwards. For information on the current version numbers of all
products and their dependence on the introduced changes please check the
corresponding sections of our ChangeLog webpage.

see Service Message 64
5830 Nov 2010Availability of new SEVIRI based product SID
The Surface incoming direct radiation (SID) based on SEVIRI data is available to
our users via our Web User Interface. Details on this new product can be found
in the (CM-SAF Product CM-104) and the Surface Radiation Products which are available via the CM SAF Web page.
Daily mean products are available starting with 11 April 2010, monthly mean
products are available from April 2010 onwards as well. Please be aware that the
first monthly mean product (April 2010) is only based on the data since 11 April.
The first full month of data is May 2010.
see Service Message 64
5730 August 2010Effect of changed satellite configuration on AVHRR based products
As reported in Service Message 56 the problems with the scan motor of AVHRR
instrument onboard NOAA17 resulted in the exclusion of this sensor from April 2010
onwards. The reduction in number of available satellite overpasses results in a
reduction of area coverage for the AVHRR based SIS, SNS and SRB products,
which is clearly visible in the daily and monthly mean products, especially in areas
south of about 50°N. Users should consider to use the SEVIRI based or merged
(SEVIRI+AVHRR) products in these areas. The reduced coverage is due to the type
of averaging and required minimum number of available valid values to generate the
averaged value.
Details on the averaging of the surface radiation products are given in the Product
User Manual Surface Radiation Products. The different cloud products do not show
a reduced spatial coverage. However, they are obviously based on a reduced
number of input data as well. The different spatial coverage between the above
mentioned surface radiation products and the cloud products is explained by a
different approach in the averaging of the data. Details can be found in the Product
User manual Clouds.
5604 June 2010Change in satellite configuration for AVHRR based products
NOAA reported problems with the scan motor of AVHRR onboard NOAA17 beginning in January 2010. On 31 March 2010 NOAA declared the AVHRR data of NOAA17 as unusable for the users (see http://www.oso.noaa.gov/poesstatus/componentStatusSummary.asp?spacecraft=17&subsystem=4 ). Analysis of the CM SAF products including NOAA17 data showed a negative effect of using NOAA17 in the averaging (e.g., stripes in the products). Therefore, NOAA17 will no longer be used in the processing of CM SAF offline products. This means that only two satellites are used from April 2010 onwards, the prime AM satellite Metop (provided via Eumetcast) and the prime PM satellite NOAA19 (provided via EARS). Please be aware that COT and CWP are now based on Metop data only.
5519 May 2010Change in satellite configuration for HTW, HLW and HSH from February 2010 onwards
As described in service message 54 the satellite configuration used in the generation of the ATOVS based products had been changed in December 2009 as the software could not handle the missing data from Metop-A’s channel 7. In the meantime the developers of the software upgraded the required files for the International ATOVS Processing Package (IAPP) to allow retrieval of temperature and humidity profiles without this channel. For all products from February 2010 onwards the updated version is used in the processing, now using ATOVS data from NOAA-16, NOAA-19 and Metop.
see Service Message 64
5431 March 2010Change in satellite configuration for HTW, HLW and HSH from December 2009 onwards
A continuing degradation of Metop-A’s channel 7 brightness temperatures has been observed by Eumetsat and reached values of NEdT of about 5 K in early December 2009. As the increased level of degradation led to a loss of other AMSU-A channel data of nominal quality, Eumetsat had decided to change the dissemination configuration on 10 December 2009. From this date onwards the degraded channel 7 data are set to „missing“ in the disseminated product. However, this resulted in CM SAF not being able to process ATOVS data from Metop anymore as the used software (IAPP v3.0b) requires data from this channel. After a series of tests it has been decided to change the satellite configuration from December 2009 onwards and to use NOAA16 and NOAA19 data in the processing of HTW, HLW and HSH. AMSU-A channel 4 onboard the satellite NOAA-16 is out of spec performance since March 2008 and NOAA-16 had therefore been excluded from the processing since that date. However, the software had been updated and this channel is now excluded from the retrieval. It is consequently possible to use the other NOAA16 instruments and AMSU-A channels for the retrieval. The first validation results have shown reasonable quality of the products.
Update available, see service message 55
5325 Feb 2010Information concerning CTY products
As described in the 1. Ope.rations Report 2009, a change in remapping table for the SEVIRI based cloud type products was intended to be introduced from January 2009 onwards. However, the change in remapping table has not been properly transferred from the test environment to the operational environment. Thus, the change has not taken place yet. Furthermore, it also affected the cloud type products generated from AVHRR data from January 2009 onwards. This was revealed in the validation of the products. In both cases only the two cloud type classes “high semitransparent” and “high opaque” are affected. Further information is given in the Annual Validation Report 2009. This problem will be corrected as follows: AVHRR-based CTY products are currently re-calculated from January 2009 onwards (change back to the original and correct remapping table) and the affected products will be replaced in our database. No new version number will be introduced. Users of the products are informed accordingly. For SEVIRI-based CTY-products the envisaged change in remapping table is introduced in product version 330 for products from January 2010 onwards. A replacement of the data from January 2009 (i.e., the planned time of product update) is not foreseen.
new version available, see service message 59
524 Dec 2009New version number for several CM SAF SEVIRI based and merged surface radiation products from November 2009 onwards
Following the CM SAF versioning approach (see ChangeLog) the change in the processing of GERB (see service message 51) results in new version numbers for products which are affected by the change in input data. The version number of the SEVIRI based and merged surface radiation products SIS, SNS and SRB is changed from November 2009 onwards. Please check the corresponding ChangeLog page for further information.
new version available, see service message 59
514 Dec 2009New version number for CM SAF TRS and TET products due to change in GERB processing on 23 October 2009
Due to a change in the processing of GERB data on 23 October 2009 including an adaptation in the cloud retrieval, the version number of the CM SAF TRS and TET products changes. The new version number will be 302 for TRS and TET for daily mean products from 23 October 2009 onwards. The version number of the monthly mean and monthly mean diurnal cycle products will be changed from 1 November 2009 onwards. Please be aware that the monthly products of TRS and TET for October 2009 include a change in the input data due to the change in the GERB version.
501 Dec 2009Safe mode of Meteosat-9 satellite in August 2009 and consequences for CM SAF TOA products
Due to the „safe mode“ of Meteosat-9 in August 2009 (see service message 44) no daily mean TRS and TET products are available for the time period 15 – 2 1 August 2009. The monthly mean and monthly mean diurnal cycle products for August 2009 are based on a reduced amount of data.
491 Dec 2009Update on availability and usability of TRS and TET data during Meteosat-9 safe mode phase in April 2009
Further analysis of the daily mean TRS and TET products from 17 to 23 April 2009 during the safe mode of Metosat-9 have revealed a reduced quality of the data. Therefore, the data are no longer available for ordering. Users having already ordered the data of this time period are advised not to use these data in their analysis. The monthly mean and monthly mean diurnal cycle TRS and TET for April 2009 can be used but are based on a reduced amount of data.
4830 Oct 2009New versions for merged AVHRR and SEVIRI surface radiation products from 1 July 2009 onwards available
As a consequence of the increased spatial coverage of AVHRR based products the region where merging takes place has been extended. Merging takes now place between a slant angle of 60 to 70 degree everywhere on MSG disk (corresponds to a circular ring around 0,0 latitude/longitude with a radius of 65 and width of 60 to 70 degree north defined at a longitude of zero). Below a slant angle of 60 degree MSG based products are used, above 70 degree NOAA based products are used and if not present no data values are given.
For version numbers valid for products from July 2009 onwards please check the ChangeLog webpage
new version numbers from Nov 2009, seee service message 52
4715 Sep 2009Availability of new versions for all AVHRR based cloud and surface radiation products from 1 July 2009 onwards
We are pleased to inform our users about the update for all AVHRR based cloud and surface radiation products for reference dates from 1 July 2009 onwards.
The major changes of the products included
- NOAA 18 data have been replaced by NOAA 19 data in EARS on 8 July 2009
- Implementation of NWC SAF SW package PPS 2009 for cloud products
- Using NWP SAF SW package AAPP v6.10
Please check the corresponding ChangeLog webpage for the new version numbers of the products.
new version available, see service message 59
4601 Sep 2009New AVHRR based cloud and surface radiation products for the Arctic region from 1 January 2009 onwards
We are pleased to inform our users about the availability of new AVHRR based cloud and surface radiation products covering the Arctic region. Daily and monthly mean products of cloud fraction, cloud type, cloud top height/ temperature/ pressure as well as surface albedo are available with a spatial resolution of 15km x 15 km. The products are available from 1 January2009 onwards and are based on the same routines as the AVHRR products released earlier this year (see Service Message 41 for more details).
new version available, see service message 59
4518 Aug 2009Availability of ATOVS version 320 water vapour and temperature products
Please be aware of the change in version number for all ATOVS products (HTW, HLW, HSH). Since June 2009 ATOVS products are generated at ECMWF by application of the ATOVS software package version 320. The ATOVS version 320 products are based on NOAA19 and MetOp-A observations. NOAA15 and NOAA18 are not included because NOAA declared the HIRS instrument on both satellites not operational. The change in platforms further required an update of AAPP and IAPP software packages. In version 320, AAPP version 6.10 and IAPP version 3.0b are implemented. Service Specifications for the month June 2009 are generally met except for the bias of water vapour products at middle tropospheric levels and layers. This is most likely caused by a decreased gain of NOAA19 MHS channels 3 and 4.
see Service Message 64
4415 Aug 2009Safe mode of Meteosat-9 satellite in August 2009 and consequences for CM SAF products
On 15 August 2009, 0513 UTC a so-called „safe mode“ of Meteosat-9 has been triggered due to a spurious event (http://oiswww.eumetsat.org/UNS/webapps/dataHome.do). As a result services had been switched to Meteosat-8. Meteosat-9 became operational again on 21 August 2009, 0900 UTC. Consequently, no SEVIRI data are available from the Meteosat-9 satellite for this time period. Although Meteosat-8 replaced Meteosat-9 during this time, the SEVIRI-based CM SAF cloud and surface radiation products have not been calculated during the time frame of the satellite’s safe mode. No daily mean products are available for the time period 15 – 20 August 2009. No weekly mean SAL product has been calculated for the reference date 17 August 2009. Please be aware that the SEVIRI-based monthly mean and monthly mean diurnal cycle cloud and surface radiation products for August 2009 as well as the SAL weekly mean product for the reference date 10 Aug 2009 are based on a reduced amount of data.
4318 April 2009Safe mode of Meteosat-9 satellite in April 2009 and consequences for CM SAF TOA products
From 17 April 2009 to 23 April 2009 Meteosat-9 went into a so-called „safe mode“ (http://oiswww.eumetsat.org/UNS/webapps/dataHome.do). Consequently, no GERB data are available from this satellite for this time period. Although Meteosat-8 replaced Meteosat-9 during this time period, the GERB- and GERB-like-based CM SAF TOA products could not be calculated during the time frame of the satellite’s safe mode. Please be aware that the daily mean products between 17 April 2009 and 23 April 2009 are only based on CERES data. The monthly mean and monthly mean diurnal cycle products for April 2009 are based on a reduced amount of data.
please check service message 49
4203 June 2009Safe mode of Meteosat-9 satellite in April 2009 and consequences for CM SAF products
From 17 April 2009 to 23 April 2009 Meteosat-9 went into a so-called „safe mode“ (http://oiswww.eumetsat.org/UNS/webapps/dataHome.do). Consequently, no SEVIRI data are available from this satellite for this time period. Although Meteosat-8 replaced Meteosat-9 during this time period, the SEVIRI-based CM SAF cloud and surface radiation products have not been calculated during the time frame of the satellite’s safe mode. Please be aware that the daily mean products for 17 April 2009 and 23 April 2009 are based on a reduced amount of data. The same is true for the SEVIRI-based monthly mean and monthly mean diurnal cycle products for April 2009.
4116 Mar 2009New version of AVHRR based cloud and surface radiation products and merged surface radiation products from 1 January 2009 onwards
We are pleased to inform our users about the availability of our updated AVHRR based cloud and surface radiation products for the so-called
baseline area. The products are available from 1 January2009 onwards. The major changes of the products included
- change from processing locally received NOAA/AVHRR data to processing NOAA/AVHRR data from EARS and Metop data received via EUMETCAST in satellite projection
- Implementation of NWC SAF SW package PPS 2008 for cloud products
- Using NWP SAF SW package AAPP v6.6
- Implementation of a new software version for cloud physical products
- Implementation of new software version for SAL
- Migration to a new processing environment
Please check the corresponding ChangeLog webpage for the new version numbers of the products. The changes in processing of AVHRR data also resulted in new version numbers for the merged surface radiation products.
new release available, see service message 47 and 48
4027 Feb 2009Release of CM SAF's first climate data set: Vertically integrated water vapour from SSM/I
Vertically integrated water vapour over global ice free ocean, retrieved from DMSP - SSM/I data from July 1987 - August 2006 (HOAPS version 3.1), is now available via the WUI. A description of the product is given in the Vertically Integrated Water Vapour from SSM/I.
3926 Feb 2009Availability of ATOVS version 310 water vapour and temperature products
Please be aware of the change in version number for all ATOVS products (HTW, HLW, HSH). Since January 2009 ATOVS products are generated at ECMWF. For further details concerning the different version numbers please check our Change log page
new version available, see service messages 45
3819 Dec 2008Availability of TOA products from September 2007 onwards
The top of atmosphere products TIS, TRS and TET from September 2007 onwards are available again until July 2008. Please be aware of the change in version number for TRS and TET. For further details concerning the different version numbers please check our ChangeLog page.
new version available, see service message 51
3717 Dec 2008Decontamination of Meteosat 9 in December 2008 and effect on CM SAF cloud and surface radiation products:
For further information please click
3626 Nov 2008Note on version 300 ATOVS water vapour products
Negative values for daily averages of humidity products were found in data from September 2008. Negative values are not present in the monthly average products. Among all daily averaged humidity products the maximum frequency of occurrence is found for the mixing ratio at 500 hPa (0.47%, median: 0.29%), and the minimum absolute value is found for TPW (-6.2 kg/m^2, median: -0.42 kg/m^2).
Please be aware that such data may also occur in other months. Please do not consider these erroneous data points for your analysis. Note that the validation report for version 300 ATOVS products remains valid.
new version available, see service messages 39
3526 Nov 2008Note on version 300 ATOVS products
An error in the meta data of version 300 ATOVS products was detected. The user is advised to utilise the longitude and latitude information provided on http://www.cmsaf.eu (go to "Product examples & Services" and then to "Auxilary Data") instead of constructing longitude and latitude fields from meta data.
3430 Sep 2008SEVIRI-based products for May 2008
EUMETSAT introduced the new radiance definition for the operational Meteosat-9 level 1.5 SEVIRI image data on 5 May 2008 (Introduction of MSG level 1.5 Effective Radiance Definition). In order to avoid changes in the products within a month, CM SAF decided to process SEVIRI data with the new radiance definition from 1 May 2008 onwards (which EUMETSAT distributed in parallel to the former definition for this time period).
On 13 May 2008, 21:06 UTC Meteosat-9 went into safe mode (Source: EUMETSAT User Service) including a switch-off of the payload. SEVIRI data was distributed again in a pre-operational mode from 16 May 2008 onwards, with a switch to operational status on 19 May 2008. In order to keep the gap in the CM SAF products as small as possible, CM SAF started processing SEVIRI data from Meteosat-9 again once data became available on 16 May 2008. No daily mean products are available for 14-15 May 2008. Due to the data gap the corresponding weekly mean SAL product as well as all monthly mean and monthly mean diurnal cycle products are generated with a reduced data base.
3325 Sep 2008Availability of SEVIRI based products:
The processing of cloud and surface radiation products based on Seviri from May 2008 onwards has been set up again. Please refer to the ChangeLog pages concerning details on the changes for the products. The products are available via the CM SAF Web User Interface.
3217 Sep 2008Note on SAL products from AVHRR for version 310:
Users are instructed to be careful when using SAL version 310 products derived from AVHRR for the baseline area. The product has a positive bias of several percent absolute resulting from an erroneous sun zenith angle normalization. The bias may be higher for barren areas. The flaw has been found and corrected and will not affect baseline area SAL products derived from AVHRR from the next version onwards. The SAL products for MSG/Seviri are not affected.
see service message 41
3101 Sep 2008Release of new version 300 of ATOVS based humidity and temperature products:
Global HTW, HLW and HSH products based on NOAA/ATOVS data from January 2004 onwards are now available via the WUI. A description of the products is given in the .
At the same time we want to inform our users that the HTW and HLW products based on Seviri as well as the merged ATOVS/Seviri products are discontinued and are no longer available to the user due to insufficient quality for climate monitoring purposes. The HTW, HLW and HSH products based on ATOVS data for the versions V200 and V210 are superseded by the release of V300. Thus, these versions are no longer distributed to the user.
see service message 35-36 and 39
3011 July 2008Availability of SEVIRI based products:
All cloud and surface radiation products based on SEVIRI are not available since May 2008 due to adaptation in connection with the change of radiance definition (for details see Introduction of MSG level 1.5 Effective Radiance Definition).
The provision of products (from May onwards) will be continued in September 2008.
Products available, see service message 33
2906 May 2008

New version of radiation products derived from AVHRR
We are pleased to announce the availability of a new version of SAL derived from AVHRR from 1 may 2008 onwards.
The main updates in SAL version 310 comparing to earlier ones are:
1. The SMAC correction for snow pixels has been removed, as the Manalo-Smith algorithm already accounts for atmospheric effects.
2. Water albedo is now normalized to 60 degrees sun zenith angle (SZA) as well, resulting in a standard albedo value of 6.76% over sea until other auxiliary data such as wind speed and chlorophyll concentrations becomes available for processing.
3. The SZA processing limit in the product should now remove all non-valid pixels, whether land, sea or sea ice.

Some minor bug fixes have also been implemented, although they have no or negligible effect on the final product. A full ATBD concerning SAL 310 will be released later in 2008.
Following a new versioning concept, all products being affected by the update (e.g., using the data as input) are processed using a new version number as well. Therefore SIS, SNS and SRB derived from AVHRR are produced with version number 301 from 1 May 2008 onwards.

Reference:
Manalo-Smith, N., Smith, G.L., Tiwari, S.N. and Staylor, W.F., 1998.
Analytic forms of bidirectional reflectance functions for application to earth radiation budget studies. Journal of Geophysical Research, Vol. 103, No. D16, pp. 19733-19752

2814 Apr 2008Availability of TOA products:
The TOA products TIS, TRS and TET are available until August 2007.
Unfortunately, the products cannot be processed from September 2007 onwards at the moment due to technical reasons.
We will inform you once the data will become available.
Product available again, see Service Message 38
2714 Apr 2008Availability of AVHRR/SEVIRI merged surface radiation products:
Merged surface radiation products from May 2007 onwards based on the products derived from AVHRR and SEVIRI are now available via our Web User Interface.
new version available, see service message 33
2609 Jan 2008Decontamination of Meteosat-9 in December 2007 and effect on CM SAF cloud and surface radiation products:
For further information please click
2520 Nov 2007Cloud Physical Products (COT, CWP, CPH):
From 5th August 2007 onwards SEVIRI radiances are re-calibrated to corresponding MODIS radiances for the retrieval of cloud physical properties. COT and CWP results therefore change (mainly increase) by about 15-30%, depending on region and viewing geometry.

Re-calibration of SEVIRI radiances to corresponding MODIS channels will be subject to further changes. Current COT/CWP results may be too high by about 10-20%, especially in humid tropical regions and Southern Midlatitudes.
2420 Nov 2007Note:
Accuracy of ocean albedo The ocean albdeo is erroneous in case of the NOAA product for the period March to August 2007, probably due to errors in the snow flag of the cloud mask over ocean. This leads also to erroneous values of the net shortwave surface flux (SNS) for the same period (March 2007 - August 2007). Additionally, users should be aware that the water albedo is from September 2007 on not retrieved using satellite data, but is modelled. For details about the applied method, see http://www-cave.larc.nasa.gov/jin/getocnlut.html
2308 Oct 2007New version of TOA radiation products available:
We are pleased to inform our users that a new version (V 300) of the CM SAF TOA radiation products based on GERB1 onboard Meteosat 9 is available from 01 May 2007 onwards.
new version available, see service message 38
2221 Sep 2007Availability of products TIS, TRS and TET:
The products TIS, TRS and TET for Version 120 are now available to the user starting 1st of February 2004
Product available until 30.04.2007, see service message 23
2117 Sep 2007New version of AVHRR based cloud and radiation products available:
We are pleased to inform our users that a new version (V 300) of the CM-SAF products based on NOAA/AVHRR data is available from 01 September 2007 onwards. For more details on changes in the processing please check our ChangeLog.
see Service Message 29
2012 July 2007CM SAF products of system version 3 available:
We are pleased to inform our users that the first CM SAF products of system version 3 are available from 1st May 2007 onwards. CM SAF version 3 includes: Area extension of SEVIRI processing to full disk new ATOVS processing based on IAPP AVHRR/SEVIRI merging for surface radiation products
see Service Message 31 and 33
1906 July 2007NWP remapping problem for version 160 In version 160 a misprojection of GME model fields has been discovered. With an incorrect NWP configuration of PPS version 1.1 a serious error in the seasonal variation of cloudiness appears. A short description of the error estimation can be found .Solved with release of version 300, see service message 21
1810 May 2007Stop of processing for all products derived from Meteosat 8 data on 9th of May 2007
The dissemination of data from Meteosat 8 has been stopped by EUMETSAT on 10 May 2007, 10 UTC. Thus, our products based on Meteosat 8 data are only available until 9 May 2007!
Meteosat 9 is the operational geostationary satellite of EUMETSAT since 11 March 2007. CM-SAF plans to distribute data derived from sensors onboard Meteosat 9 in July 2007.
Products derived from Meteosat 9 have been released, see service message 20
1710 Jan 2007Top of atmosphere product:
Version 110 of toa products are available form April 2006 onwards.
New version available, see service messages 22 and 23
1629 Sep 2006HCP ATOVS and Merged Products:
Due to technical reasons the following products are no longer available with effect from 19.09.2006: HTW and HLW from ATOVS and Merged Product as well as HSH from ATOVS.
With the introduction of CM SAF Version 3, global products from ATOVS based on different input data will be available.
new version available, see service message 31
1524 Aug 2006Note on data ordering:
After submitting your request for data, you may receive the error message "internal server error". This means that you order has not been properly executed. This occurs occasionally and we are presently investigating the cause for this error. Logout and login and try to submit your order again. If this is still not successfull, please send your order via email to contact.cmsaf@dwd.de. We expect to solve this issue within the next few weeks. Sorry for the inconvenience.
Problem has been solved
1422 Aug 2006Cloud Phase Product (CPH):
Daily mean and monthly mean of Cloud Phase Product (CPH) from MSG is missing for baseline area since 01.09.2005
Solved with release of V300 for MSG, see service message 20
1301 Aug 2006New version of MSG products available:
A new version of MSG cloud, surface radiation and humidity products is available. Data have been reprocessed starting 01.09.2005. The version 200 is not longer available.
See change log for recent updates and availability
1220 July 2006HCP-Products:
Error in product catalogue and ordering system: All SEVIRI and merged SEVIRI/ATOVS HCP products are at (3 km)**2 and not at (15 km)**2 spatial resolution as stated in the catalogue and ordering system.
Documentation has been changed accordingly
1120 July 2006Water Vapour:
SEVIRI only water vapour estimates have a rather poor quality (please look at the HCP validation report). If high spatial resolution is needed for an analysis it is recommended to use the SEVIRI/ATOVS merged product, where SEVIRI retrievals are rescaled using ATOVS data.
The data is no longer available to the user, see service message 31
1020 July 2006Top of atmosphere reflected solar and emitted thermal radiative flux (TRT,TET):
In addition to the merged CM-SAF product, pure GERB or GERB-like (MSG/SEVIRI based) are available on request. (User Help Desk)
920 July 2006Surface albedo:
The MSG processing chain is not yet validated / fully checked. Overestimates of surface albedo values of a few percent (in absolute units) are possible.
See validation reports (available on webpage)
801 June 2006COT/CWP products from MSG/SEVIRI: health warning
Due to a bug in the data supply of the COT/ CWP retrieval chain the products from MSG/SEVIRI are of limited quality until January 31st, 2006.
Solved with release of version 210 for products derived from MSG, see change log for details
706 Jan 2006CM SAF products of system version 2) available
After passing successfully the Operational Readiness Review in September 2005 we are pleased to inform our users that CM-SAF products of system version 2) including SEVIRI data and HCP products are available from 1st September 2005 onwards.
see change log for recent system upgrades and availability of different versions
627 Apr 2005Target Accuracy
The target accuracy of 10 W/m² for monthly means of the radiation components (SOL, SDL, SIS) and 15 W/m² for the radiation budgets (SNS, SNL, SRB) is in general achieved. In very complex and heterogenous regions, e.g., the Alpine region, higher bias values occur.
See validation reports available on web page
503 Mar 2005Problem in cloud fraction averages
Currently, all pixels identified as snow / ice are falsely calculated as cloudy during the averaging procedure. Depending on the number of snow / ice pixels, this leads to an overestimation of cloudiness.
Solved with release of version 150
42 Mar 2005Calibration of NOAA-17 radiances
Due to outdated calibration correction factors the emitted blackbody temperatures of channel 4 of NOAA-17 currently show a bias of approx.5 K compared to NOAA-15 and 16. The most obvious effect on our daily products is an observed bias in the derived cloud top temperatures.
The problem is identified and will be solved with the next version update scheduled for April 1st.
Solved with release of V140
302 Mar 2005Data gap
Due to a malfunction of the NOAA satellite receiving system at DWD data for February 10th, 2005 are not available.
201 Jan 2005The CM SAF is performing operational production (initial operations mode, based on NOAA/ AVHRR data for cloud and surface radiation products; system version 1) starting 01 January 2005. The upgraded system version 2 (inclusion of MSG data and HCP products) will include improved procedures of input data control, performance monitoring, product quality assurance and validation. System version 2 is expected for summer 2005.See change log for currently available versions and updates
101 Jan 2005Due to known limitations in the cloud processing artefacts may appear in the end products which look like straight lines across sub-areas. It is expected that this will be solved for V2 (summer 2005).Solved with release of V150


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