# GOME-2 (Global Ozone Monitoring Experiment-2)
*sensor . products*

Scanning UV-VIS spectrometer on the MetOp series for operational ozone, trace-gas, aerosol, cloud, and UV-radiation products.

## Specifications
- **product status**: operational
- **deployment context**: orbital
- **manufacturer**: selex-galileo
- **sensor**: {"instrument_family":"passive-optical","measurement_principle":"passive","spectral_range_nm":{"min":240,"max":790},"spectral_band_count":4096,"gsd_m":{"native":40},"swath_km":1920,"sampling_nm":0.26,"channels":[{"name":"Main spectral channels","spectral_range_nm":{"min":240,"max":790},"spectral_band_count":4096,"gsd_m":{"native":40}},{"name":"Polarisation measurement devices","spectral_range_nm":{"min":312,"max":800},"spectral_band_count":30,"gsd_m":{"native":10}}],"notes":"MetOp-B/C main-channel ground pixels are 80 x 40 km at 1920 km swath; gsd_m.native records the finer dimension. Spectral resolution is 0.26 to 0.51 nm."}
- **entity type**: sensor
- **last verified date**: 2026-06-14
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: selex-galileo
- **attributes**: {"kind":"sensor","product_status":"operational","deployment_context":"orbital","manufacturer":"selex-galileo","description":"Scanning UV-VIS spectrometer on the MetOp series for operational ozone, trace-gas, aerosol, cloud, and UV-radiation products.","sensor":"{\"instrument_family\":\"passive-optical\",\"measurement_principle\":\"passive\",\"spectral_range_nm\":{\"min\":240,\"max\":790},\"spectral_band_count\":4096,\"gsd_m\":{\"native\":40},\"swath_km\":1920,\"sampling_nm\":0.26,\"channels\":[{\"name\":\"Main spectral channels\",\"spectral_range_nm\":{\"min\":240,\"max\":790},\"spectral_band_count\":4096,\"gsd_m\":{\"native\":40}},{\"name\":\"Polarisation measurement devices\",\"spectral_range_nm\":{\"min\":312,\"max\":800},\"spectral_band_count\":30,\"gsd_m\":{\"native\":10}}],\"notes\":\"MetOp-B/C main-channel ground pixels are 80 x 40 km at 1920 km swath; gsd_m.native records the finer dimension. Spectral resolution is 0.26 to 0.51 nm.\"}"}
- **technology**: optical-spectral-sensing
- **relevance**: in-scope

## Editorial
GOME-2 is the Global Ozone Monitoring Experiment-2 instrument flown on the MetOp-A, MetOp-B, and MetOp-C meteorological satellites [^acsaf-gome2][^eumetsat-gome2-factsheet]. It is a scanning passive optical ultraviolet-visible spectrometer used for operational atmospheric composition products, including ozone, trace gases, aerosols, clouds, and ultraviolet radiation [^acsaf-gome2]. The main spectral band spans 240 to 790 nm with 4096 spectral channels [^acsaf-gome2][^eumetsat-gome2-factsheet].

The instrument is configured for broad operational coverage from polar-orbiting MetOp platforms. MetOp-B and MetOp-C wide-swath mode provides a 1920 km swath, with main-channel ground pixels of about 80 x 40 km [^eumetsat-gome2-factsheet]. GOME-2 also includes polarisation measurement devices covering 312 to 800 nm, with 30 bands and about 10 km sampling in the finer dimension [^eumetsat-gome2-factsheet][^wmo-gome2]. Its spectral resolution is about 0.26 to 0.51 nm, depending on channel and operating mode [^eumetsat-gome2-factsheet].

For buyers, GOME-2 is a continuity instrument for operational atmospheric monitoring rather than a high-spatial-resolution imager. It supports ozone and trace-gas workflows that need consistent coverage, public meteorological mission operations, and ultraviolet-visible spectroscopy, with local scene detail outside its design focus [^acsaf-gome2][^wmo-gome2]. The instrument was developed by Selex ES, also referenced as Selex-Galileo, under EUMETSAT and ESA contract [^eumetsat-gome2-factsheet]. When using GOME-2 products, buyers should account for host-satellite mode and pixel geometry, because the row's native ground sampling records the finer 40 km dimension while operational pixels are described as 80 x 40 km [^eumetsat-gome2-factsheet].

## Compositional position
- metop-a (missions) --[mission_payloads]--> GOME-2 (Global Ozone Monitoring Experiment-2)
- metop-b (missions) --[mission_payloads]--> GOME-2 (Global Ozone Monitoring Experiment-2)
- metop-c (missions) --[mission_payloads]--> GOME-2 (Global Ozone Monitoring Experiment-2)

## Sources
- [acsaf-gome2] | AC SAF GOME-2 information page | https://acsaf.org/gome-2.php | tier=agency-doc | accessed=2026-06-14
- [eumetsat-gome2-factsheet] | EUMETSAT GOME-2 Factsheet v4F | https://www-cdn.eumetsat.int/files/2022-02/GOME-2%20Factsheet_v4F.pdf | tier=agency-doc | accessed=2026-06-14
- [wmo-gome2] | WMO OSCAR instrument record: GOME-2 | https://space.oscar.wmo.int/instruments/view/gome_2 | tier=agency-doc | accessed=2026-06-14

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Source: https://eo-atlas.org/products/sensor/gome-2
Maintainer: SpectraWorks B.V. (CC-BY 4.0)