The Radio Occultation Meteorology Satellite Application Facility (ROM SAF) is a decentralised processing centre under EUMETSAT which is responsible for operational processing of GRAS radio occultation (RO) data from the Metop satellites and also reprocesses RO data from other missions. The ROM SAF delivers bending angle, refractivity, temperature, pressure, humidity, and other geophysical variables in near real-time (for NWP users) and in offline (for research use), as well as reprocessed Climate Data Records (CDRs) and Interim Climate Data Records (ICDRs) for users requiring a higher degree of homogeneity of the RO data sets. The CDRs and ICDRs (and also the offline data) are further processed into globally gridded monthly-mean data for use in climate monitoring and climate science applications.

The ROM SAF also maintains the Radio Occultation Processing Package (ROPP) which contains software modules that aid users wishing to process, quality-control and assimilate radio occultation data from any radio occultation mission into NWP and other models.

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

NRT Monitoring of RO Data
ROM SAF monitoring and data flow
ECMWF ROM SAF monitoring statistics


COSMIC-2/FORMOSAT-7 data included in the NRT monitoring pages
The data is now available on GTS and different types of statistics are made available at our NRT monitoring page. Read more here.
[March 25, 2020]

Publication of VS35 report on ROPP integration in Wegener Center RO processing system
The VS35 report describes initial applications of ROPP in the Wegener Center reference occultation processing system rOPS. Read more here.
[February 27, 2020]

Publication of ROM SAF Report 37
This report summarises the recommendations from the 6th ROM SAF User Workshop held on 19 - 25 September 2019. Read more here.
[February 11, 2020]

Radio occultation data from the PAZ satellite available via GTS
The ROM SAF is now analysing these data, and statistics have been added to the NRT monitoring system. Read more here.
[January 10, 2020]

Interim Climate Data Record and Offline products from Metop up to July 2019
The ROM SAF is pleased to announce that the Interim Climate Data Record (ICDR) and Offline products now covers the period up to and including July 2019. Read more here.
[January 9, 2020]

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