The GRAS Meteorology SAF is a decentralized centre under EUMETSAT, that runs an operational radio occultation system responsible for delivering bending angle, refractivity, temperature, pressure, and humidity profiles in near-real time and offline for NWP and climate users. The offline profiles are further processed into climate products consisting of gridded monthly means of bending angle, refractivity, temperature, humidity, and geopotential heights.

The GRAS SAF also maintains the ROPP (Radio Occultation Processing Package) software package for users wishing to process, quality-control, and assimilate radio occultation data from any radio occultation mission into NWP and other models.

The GRAS SAF Leading Entity is the Danish Meteorological Institute (DMI), with Cooperating Entities ECMWF (European Centre for Medium-Range Weather Forecasts) in Reading, United Kingdom, IEEC (Institut D'Estudis Espacials de Catalunya) in Barcelona, Spain, and Met Office in Exeter, United Kingdom. Read more about the project here.

To mark the beginning of the 2nd Continuous Development and Operations Phase (CDOP-2) on March 1, 2012, the GRAS SAF will change its name to ROM SAF (Radio Occultation Meteorology SAF). This is also to reflect the fact that our products and services are not limited to RO data from the GRAS instrument.



GRAS SAF Product Archive
For access to our data products, please use the Product Archive

NRT Monitoring of RO Data
Monitoring of quality and data flow (MetOp/GRAS, COSMIC, GRACE-A, TerraSAR-X, SAC-C, C/NOFS)
ECMWF statistics (MetOp/GRAS, COSMIC, GRACE-A, TerraSAR-X, SAC-C, C/NOFS)