The Chlorophyll Fluorescence Imaging Spectrometer (CFIS) is an airborne passive spectrometer developed by the Jet Propulsion Laboratory (JPL). It was designed to validate solar-induced fluorescence (SIF) measurements from the Orbiting Carbon Observatory-2 (OCO-2) satellite. CFIS is an imaging grating spectrometer that measures SIF in the 737-772 nm spectral range. CFIS data is typically gridded to a spatial resolution of 30 m for comparison with satellite observations. It has a swath width of 905 m and an across-track pixel size of 3.5 m at a flight altitude of 5 km above ground level.

Instrument Details
- Spectrometer/Radiometer
- Earth Science > Spectral/engineering > Visible WavelengthsEarth Science > Biosphere > Vegetation > ChlorophyllEarth Science > Spectral/engineering > Visible Wavelengths > Visible Radiance
- Land Surface
- N/A
- 30 m
- 388.3-406.8 THz
- https://doi.org/10.1016/j.rse.2018.08.032
Christian Frankenberg
Christian Frankenberg
JPL
NASA
Unpublished
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