# ROM SAF Radio Occultation Products
*data products*

## Specifications
- **level**: L2
- **distributor**: eumetsat
- **file format**: netCDF, BUFR
- **access endpoint**: https://rom-saf.eumetsat.int/product_archive.php?q=printme
- **access model**: open
- **licence**: ROM SAF product archive access
- **cost model summary**: Free access through the ROM SAF Product Archive after user registration where required.
- **primary data portal url**: https://rom-saf.eumetsat.int/product_archive.php?q=printme
- **use cases**: ["Numerical weather prediction","Climate monitoring","Radio-occultation profile research","Atmospheric temperature and humidity profiling"]
- **practical limitations**: ["Radio-occultation profile products are vertical soundings, not imagery.","Near-real-time, offline, climate-data-record, and interim-climate-data-record streams have different latency and homogeneity characteristics."]
- **deployment context**: orbital
- **entity type**: data_product
- **last verified date**: 2026-06-14
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: eumetsat
- **attributes**: {"level":"L2","distributor":"eumetsat","file_format":"netCDF, BUFR","access_endpoint":"https://rom-saf.eumetsat.int/product_archive.php?q=printme","access_model":"open","licence":"ROM SAF product archive access","cost_model_summary":"Free access through the ROM SAF Product Archive after user registration where required.","primary_data_portal_url":"https://rom-saf.eumetsat.int/product_archive.php?q=printme","use_cases":"[\"Numerical weather prediction\",\"Climate monitoring\",\"Radio-occultation profile research\",\"Atmospheric temperature and humidity profiling\"]","practical_limitations":"[\"Radio-occultation profile products are vertical soundings, not imagery.\",\"Near-real-time, offline, climate-data-record, and interim-climate-data-record streams have different latency and homogeneity characteristics.\"]","deployment_context":"orbital"}
- **relevance**: in-scope

## Editorial
ROM SAF Radio Occultation Products are Level 2 atmospheric profile products distributed by EUMETSAT through the ROM SAF Product Archive.[^rom-saf-home][^rom-saf-archive] The product family converts radio-occultation observations into geophysical variables used by numerical weather prediction, climate monitoring, and profile research, including refractivity, temperature, pressure, and humidity.[^rom-saf-archive][^rom-saf-pum] Files are provided in netCDF and BUFR formats, with access through the ROM SAF archive and free access after registration where required.[^rom-saf-archive][^rom-saf-pum] The product fits cases where the need is vertical atmospheric sounding rather than map imagery. It is an orbital data product, so evaluation should focus on profile variables, latency class, and archive stream rather than scene footprints or surface raster characteristics.[^rom-saf-archive][^rom-saf-pum] The archive includes near-real-time, offline, climate-data-record, and interim-climate-data-record streams, so latency and homogeneity depend on the selected stream.[^rom-saf-archive][^rom-saf-pum]

## Compositional position
- atmospheric-profiling (topics) --[topic_capabilities]--> ROM SAF Radio Occultation Products

## Sources
- [rom-saf-home] | ROM SAF home page, EUMETSAT | https://rom-saf.eumetsat.int/ | tier=agency-doc | accessed=2026-06-14
- [rom-saf-archive] | ROM SAF Product Archive, EUMETSAT | https://rom-saf.eumetsat.int/product_archive.php?q=printme | tier=agency-doc | accessed=2026-06-14
- [rom-saf-pum] | ROM SAF Product User Manual: Level 1B and 2 products | https://rom-saf.eumetsat.int/product_documents/romsaf_pum.pdf | tier=agency-doc | accessed=2026-06-14

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Source: https://eo-atlas.org/data_products/rom-saf-radio-occultation-products
Maintainer: SpectraWorks B.V. (CC-BY 4.0)