# Greenhouse-gases Monitoring Instrument (GF-5)
*sensor . products*

Four-band NIR/SWIR greenhouse-gas spectrometer on GF-5 for CO2 and CH4 mole-fraction retrieval, using O2, CO2, and CH4 bands around 765, 1575, 1650, and 2050 nm.

## Specifications
- **product status**: operational
- **deployment context**: orbital
- **manufacturer**: cnsa
- **sensor**: {"instrument_family":"passive-optical","measurement_principle":"passive","spectral_range_nm":{"min":759,"max":2058},"spectral_band_count":4,"gsd_m":{"native":10.3},"swath_km":800,"notes":"Mechanical cross-track scanning; WMO OSCAR records about 800 km swath and 10.3 km sub-satellite-point resolution."}
- **entity type**: sensor
- **last verified date**: 2026-06-16
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: cnsa
- **attributes**: {"kind":"sensor","product_status":"operational","deployment_context":"orbital","manufacturer":"cnsa","description":"Four-band NIR/SWIR greenhouse-gas spectrometer on GF-5 for CO2 and CH4 mole-fraction retrieval, using O2, CO2, and CH4 bands around 765, 1575, 1650, and 2050 nm.","sensor":"{\"instrument_family\":\"passive-optical\",\"measurement_principle\":\"passive\",\"spectral_range_nm\":{\"min\":759,\"max\":2058},\"spectral_band_count\":4,\"gsd_m\":{\"native\":10.3},\"swath_km\":800,\"notes\":\"Mechanical cross-track scanning; WMO OSCAR records about 800 km swath and 10.3 km sub-satellite-point resolution.\"}"}
- **relevance**: in-scope

## Editorial
The Greenhouse-gases Monitoring Instrument on GF-5 is a four-band NIR/SWIR passive optical spectrometer for carbon dioxide and methane retrieval. Its GF-5 configuration uses mechanical cross-track scanning with five cross-track samples, about 800 km swath, and 10.3 km sub-satellite-point resolution, giving global daylight coverage in five days [^wmo-gmi-gf5]. The instrument observes oxygen, carbon dioxide, and methane absorption bands in the 759-2058 nm range, supporting pressure, cloud, and aerosol correction along with XCO2 and XCH4 retrieval [^mdpi-gmi-ii]. The GF-5 instrument measures CO2 and CH4 profiles [^wmo-gmi-gf5]. SWIR absorption greenhouse-gas screening is demonstrated on GF-5 [^wmo-gmi-gf5].

## Compositional position
- gaofen-5 (missions) --[mission_payloads]--> Greenhouse-gases Monitoring Instrument (GF-5)

## Sources
- [wmo-gmi-gf5] | WMO OSCAR instrument record: GMI (GF-5) | https://space.oscar.wmo.int/instruments/view/gmi_gf_5 | tier=agency-doc | accessed=2026-06-16
- [mdpi-gmi-ii] | Greenhouse Gases Monitoring Instrument on GaoFen-5 Satellite-II: Optical Design and Evaluation | https://www.mdpi.com/2072-4292/15/4/1105 | tier=peer-reviewed | accessed=2026-06-16 | published=2023-02-18
- [ceos-gmi-2025] | Hyperspectral Remote Sensing of Greenhouse Gases Using GF5 GMI, CEOS AC-VC-21 presentation | https://ceos.org/document_management/Virtual_Constellations/AC-VC/Meetings/AC-VC-21/Presentations/IWGGGMS-21%20ACVC%20Joint%20Meeting/1.17_Wu.pdf | tier=agency-doc | accessed=2026-06-16 | published=2025-08-27

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Source: https://eo-atlas.org/products/sensor/gmi-gf-5
Maintainer: SpectraWorks B.V. (CC-BY 4.0)