The Radio Occultation Meteorology Satellite Application Facility (ROM SAF) is a decentralised processing centre under EUMETSAT which is responsible for operational processing of radio occultation (RO) data from the Metop and Metop-SG satellites and radio occultation data from other missions. The ROM SAF delivers geophysical variables in near real-time for NWP users, 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 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


GRACE-C observations added to NRT monitoring
Observations from GRACE-C are now available on the GTS, and have been added to the NRT monitoring system. Read more here.
[June 11, 2021]

Release of multi-mission RO CDR version 1.0
The multi-mission CDR version 1.0 (GRM-28-R1) is based on radio occultation data from Metop, COSMIC, GRACE, and CHAMP data. Read more here.
[June 9, 2021]

Publication of ROM SAF Operations Report 2020 H2
This report covers the 7-month period June -- December (H2) of 2020. Read more here.
[February 26, 2021]

Release of software package ROPP version 10.0
The ROM SAF announces the release of ROPP-10.0, the latest update of the Radio Occultation Processing Package (ROPP). Read more here.
[February 9, 2021]

Publication of VS report on impacts of under-sampling the diurnal cycle
The VS study investigated Bayesian interpolation in order to analyse and map the atmospheric diurnal cycle. Read more here.
[January 19, 2021]

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