Joint Seminar: Monitoring the Climate from Space - the EUMETSAT Satellite Application Facility on Climate Monitoring (CM-SAF)

The Satellite Application Facility on Climate Monitoring (CM-SAF) aims at the provision of satellitederived geophysical parameter data sets suitable for climate monitoring. CM-SAF provides climatologies for Essential Climate Variables (ECV), as required by the Global Climate Observing System implementation plan in support of the UNFCCC. Several cloud parameters, surface albedo, radiation fluxes at the top of the atmosphere and at the surface as well as atmospheric temperature and humidity products form a sound basis for climate monitoring of the atmosphere. The products are categorized in monitoring data sets obtained in near real time and data sets based on carefully intercalibrated radiances.


The CM-SAF products are derived from several instruments on-board operational satellites in geostationary and polar orbit as the Meteosat and NOAA satellites, respectively. The existing data sets will be continued using data from the instruments on-board the new joint NOAA/EUMETSAT Meteorological Operational Polar satellite. The products have mostly been validated against several ground-based data sets both in situ and remotely sensed. The accomplished accuracy for products derived in near real time is sufficient to monitor variability on diurnal and seasonal scales. The demands on accuracy increase the longer the considered time scale is. Thus, interannual variability or trends can only be assessed if the sensor data are corrected for jumps created by instrument changes on successive satellites and more subtle effects like instrument and orbit drift and also changes to the spectral response function of an instrument. Thus, a central goal of the recently started Continuous Development and Operations Phase of the CM-SAF (2007–2012) is to further improve all CM-SAF data products to a quality level that allows for studies of interannual variability.


Examples for time series produced in the current project phase are: (1) Continuation and improvement of SSM/I over ocean products in collaboration with the Max-Planck Institute for Meteorology in Hamburg, (2) a consistent global cloud and surface radiation flux climatology derived from AVHHR GAC data, (3) a thirty year time series of Upper Tropospheric Humidity derived from Meteosat first and second generation done in collaboration of CM-SAF, the Laboratoire Météorologie Dynamic (LMD) and EUMETSAT, and (4) a consistent time series of atmospheric parameters from SEVIRI and GERB data for Meteosat 8 and 9.




13:30 h


Bundesstr. 53, room 022/023
Seminar Room 022/023, Ground Floor, Bundesstrasse 53, 20146 Hamburg, Hamburg


Jörg Schulz, DWD


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