Radio Occultation Meteorology (ROM SAF)

The ROM SAF generates and archives high-quality GNSS Radio Occultation (RO) data for NWP

Related pages

Satellite Application Facilities (SAFs)

Utilising specialist expertise from the Member States, Satellite Application Facilities (SAFs) are dedicated centres of excellence for processing satellite data.

Top of the atmosphere view from ISS. Credit: ISS/NASA

Atmospheric Composition monitoring (AC SAF)

The AC SAF processes satellite data on ozone, other trace gases, aerosols and ultraviolet data.

Climate monitoring (CM SAF)

The CM SAF generates and archives high-quality climate datasets.

Land Surface Analysis (LSA SAF)

The LSA SAF exploits remotely-sensed data on land, land-atmosphere interactions and biosphere applications.

Ocean and Sea Ice (OSI SAF)

The OSI SAF provides comprehensive information on the ocean-atmosphere interface.

Numerical Weather Prediction (NWP SAF)

The NWP SAF supports the interface between satellite data and European activities in NWP.

Support to Nowcasting and Very Short Range Forecasting (NWC SAF)

Nowcasting is a weather forecast for the next few hours, based on current information.

Flooded street in England. Credit: Brian Jackson

Support to Operational Hydrology and Water Management (H SAF)

The H SAF generates and archives datasets and products for operational hydrological applications.

The Radio Occultation Meteorology Satellite Application Facility (ROM SAF) leverages radio signals to derive comprehensive profiles of the atmosphere, including temperature, pressure, and humidity.

Last Updated

28 February 2025

Published on

18 June 2020

By processing these signals, the ROM SAF contributes well calibrated, accurate and stable data to serve as input in Numerical Weather Prediction Models in near real time. The consistent processing of radio occultation data from various satellite missions over the last decades enables the generation of climate records of essential characteristics, in particular of the upper atmosphere.

More recently, the ROM SAF is developing ionosphere products for EPS-SG for space weather applications.

Find out more about the ROM SAF here.