For complementing its Central Facilities capability in Darmstadt and taking more benefit from specialized expertise in Member States, EUMETSAT created Satellite Application Facilities (SAFs), based on co-operation between several institutes and hosted by a National Meteorological Service. The Ocean and Sea Ice Satellite Application Facility (OSI SAF) is an answer to the common requirements of meteorology and oceanography for a comprehensive information on the ocean-atmosphere interface. One of the objectives of the OSI SAF is to produce, control and distribute operationally in near real-time OSI SAF products using available satellite data with the necessary Users Support activities.
These products are intended for users requiring direct, geolocated and dated observations. The constraint is that the data availability over a given region within a given time range depends on whether the sensor spotted this region at the requested moment or not.
They consist in synoptic fields of various geophysical quantities at regular space/time resolutions, depending on each sensor's sampling pattern. Estimating these gridded value-added products requires :
The gridded product are much more easier and practical to handle than swath products :
Available gridded products at CERSAT include global mean wind fields, sea-ice maps, radar backscatter over land.
These products are specially intended for the following studies :
monitoring geophysical features or events over specific areas and time periods (from various sensors)Many colocation products, coupling satellite, in-situ (TAO, TOGA, ...buoy networks) and models (ECMWF) observations are now generated and distributed at CERSAT.
The temperature at the surface of the ocean (SST) is an important physical property that can be measured quite easily from Earth Observation satellites. SST has a strong influence on the exchange of heat, momentum, water and gases beteen the ocean and the atmosphere. Knowledge of the geographical distribution of SST and its variation with time is therefore essential for predicting the dynamical behaviour of the atmosphere and the ocean. SST is also an important indicator of climate and climate change, giving us a finger on the pulse of the planet itself. Climate quality sea surface temperatures are needed on an operational basis to develop better predication of climate change.
The CERSAT is a major center for the delivery of sea surface temperature in teh frame of several international projects (such as Medspiration, Mersea or GODAE/GHRSST-PP), and in partnership with other european agencies such as Météo-France/CMS, ESA or the EUMETSAT Ocean and Sea-ice SAF (SAF O&SI).