EO·Atlas
Infrared Atmospheric Sounding Interferometer - New Generation
Compiled from public sources on 2026-06-16. Not independently verified by Centre National d'Etudes Spatiales.
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Passive infrared sounder on Metop-SG A satellites providing radiance spectra for atmospheric temperature, humidity, clouds, greenhouse gases, aerosols, and trace gases.
Infrared Atmospheric Sounding Interferometer - New Generation (IASI-NG) is a passive optical cross-nadir infrared hyperspectral sounder for the Metop-SG A series, succeeding the first-generation IASI instruments on Metop. [1] It records 16,921 spectral samples across 645-2760 cm^-1, about 3620-15500 nm, with four 12 km instantaneous fields of view inside each 100 x 100 km field and an average 24 km sampling distance. [1] The swath is about 2000 km, giving broad cross-track coverage for atmospheric temperature and humidity sounding, cloud parameters, greenhouse gases, aerosols and trace gases. [1] IASI-NG has demonstrated atmospheric sounding on Metop-SG A1 through first returned data; first IASI-NG data returned in October 2025, with calibration and validation under way ahead of operational distribution to users in 2026. [2] CNES has overall technical responsibility for IASI-NG within the Metop-SG atmospheric-sounding payload set. [3]
Compositional position
- Atmospheric limb soundingvia Metop-SG-A1
IASI-NG provides passive infrared atmospheric sounding.
None on record.
- [1]WMO OSCAR instrument record: IASI-NGagency doc2026-06-16
- [2]IASI-NG instrument on Metop-SGA1 satellite sends back first data, EUMETSATagency doc2026-06-16
- [3]IASI-NG project page, CNESagency doc2026-06-16