EO·Atlas
Ocean Color Instrument
PACE hyperspectral imaging radiometer for ocean colour, aerosol, and cloud observations from ultraviolet through near-infrared, with discrete SWIR bands.
The Ocean Color Instrument is the primary passive optical hyperspectral imaging radiometer aboard PACE.[1][2] It provides continuous UV-NIR coverage from 315-895 nm and seven discrete SWIR bands from 940-2260 nm, giving an approximate 290-band channel set for ocean-colour, aerosol and cloud observations.[1][3] Sampling is 2.5 nm, with 1.25 nm steps at selected fluorescence and oxygen bands and 5 nm bandwidths.[1] Native footprint is about 1.2 km by 1.2 km at scan center, and the ground swath is about 2700 km.[1] OCI is operational, and its demonstrated use includes ocean-colour water-leaving radiance retrieval on PACE.[2][1] Its calibration approach combines solar diffusers, lunar irradiance observations and atmospheric/Fraunhofer spectral features for radiometric and spectral trending, which matters for buyers comparing hyperspectral marine products over long time series.[1]
Compositional position
- Ocean colour / water-leaving radiancevia PACE
OCI is PACE's hyperspectral imaging radiometer for ocean-colour observations.
None on record.
- [1]Ocean Color Instrument, NASA PACEagency doc2026-06-16
- [2]Ocean Color Instrument, NASA Earthdataagency doc2026-06-16
- [3]Overview of the NASA PACE Mission, IOCCG 2024community2026-06-16