# Atmospheric Infrared Ultra-spectral spectrometer
*sensor . products*

SWIR/MWIR/TIR atmospheric infrared ultra-spectral limb/solar-occultation spectrometer on GF-5 for atmospheric chemistry profiles including O3, H2O, NO, N2O, NO2, CO, and CO2.

## Specifications
- **product status**: operational
- **deployment context**: orbital
- **manufacturer**: cnsa
- **sensor**: {"instrument_family":"passive-optical","measurement_principle":"passive","spectral_range_nm":{"min":2400,"max":13300},"spectral_band_count":1,"gsd_m":{"native":300},"swath_km":1,"spec_disclosure":"estimated","notes":"WMO OSCAR reports spectral range 2.4-13.3 um and 0.03 cm-1 spectral resolution; gsd_m and swath are placeholders for limb-sounding horizontal resolution/coverage because sensor schema has no limb-sounder branch."}
- **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":"SWIR/MWIR/TIR atmospheric infrared ultra-spectral limb/solar-occultation spectrometer on GF-5 for atmospheric chemistry profiles including O3, H2O, NO, N2O, NO2, CO, and CO2.","sensor":"{\"instrument_family\":\"passive-optical\",\"measurement_principle\":\"passive\",\"spectral_range_nm\":{\"min\":2400,\"max\":13300},\"spectral_band_count\":1,\"gsd_m\":{\"native\":300},\"swath_km\":1,\"spec_disclosure\":\"estimated\",\"notes\":\"WMO OSCAR reports spectral range 2.4-13.3 um and 0.03 cm-1 spectral resolution; gsd_m and swath are placeholders for limb-sounding horizontal resolution/coverage because sensor schema has no limb-sounder branch.\"}"}
- **relevance**: in-scope

## Editorial
AIUS is a passive optical atmospheric sounder on Gaofen-5/GF-5 that uses SWIR, MWIR, and TIR spectroscopy for atmospheric chemistry profiling.[^wmo-aius] It measures species including O3, H2O, NO, N2O, NO2, CO, and CO2, with a 2.4-13.3 um spectral range and 0.03 cm-1 spectral resolution.[^wmo-aius] The instrument performs atmospheric limb and solar-occultation sounding, demonstrated on Gaofen-5.[^wmo-aius]

## Compositional position
- gaofen-5 (missions) --[mission_payloads]--> Atmospheric Infrared Ultra-spectral spectrometer

## Sources
- [wmo-aius] | WMO OSCAR instrument record: AIUS | https://space.oscar.wmo.int/instruments/view/aius | tier=agency-doc | accessed=2026-06-16
- [ceos-gf5] | CEOS MIM mission summary: GF-5 | https://database.eohandbook.com/database/missionsummary.aspx?missionID=959 | tier=agency-doc | accessed=2026-06-16
- [aius-spectrum-assessment] | Assessment of Spectra of the Atmospheric Infrared Ultraspectral Sounder | https://pubmed.ncbi.nlm.nih.gov/33418883/ | tier=peer-reviewed | accessed=2026-06-16

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