ROMEX seeks to answer some of the more pressing technical and programmatic questions facing the community and help inform the near- and long-term strategies for RO missions and acquisitions by NOAA, EUMETSAT, and other CGMS partners. Most important among these questions is to quantify the benefit of increasing the quantity of RO observations. ROMEX is envisioned to consist of at least two three-month periods during which all available RO data are collected, processed, archived, and made available to the global community free of charge for research and testing. Although the primary purpose is to test the impact of varying numbers of RO observations on NWP, the three-months of RO observations will be a rich data set for research on many atmospheric phenomena. The first ROMEX period (ROMEX-1) will be September through November 2022, which contains a number of tropical cyclones that can be studied. Although ROMEX-1 data will be restricted to neutral atmosphere data, if successful a broadened ROMEX that will also contain space weather data is also envisioned.
The international community and representatives of the IROWG are actively planning the execution of ROMEX. The RO data providers are sending their data to EUMETSAT for processing in a uniform way. The processed data (phase, bending angle, and refractivity) will be sent to ROM SAF for distribution to registered ROMEX participants. The data are available to all participants at no charge, with the conditions that the providers be acknowledged and the data not be used for any commercial or operational purposes.
A ROMEX workshop is planned for 17-19 April 2024 at EUMETSAT in Darmstadt. Information on the workshop and on ROMEX is available at irowg.org
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