CRIS > Cross-track Infrared SoundersounderInstrument Type: sounder, Operational Mode: crosstrack, Collection
Type: whiskbroom, Other Information: CrIS is a Fourier Transform Spectrometer (FTS)
instrument. There are 3 bands in the CrIS spectral range: long-wave infrared, mid-wave
infrared, and short-wave infrared, denoted LWIR (650-1095 cm-1), MWIR (1210-1750
cm-1), and SWIR (2155-2550 cm-1). The field of regard of each band is 3.1 degrees. The
field of regard is divided into nine circular Fields Of View (FOV). The ground
footprint of each FOV at nadir is approximately 14 km. The instrument's field of
regard is stepped to each of 30 crosstrack locations such that coverage is a minimum
2200 km swath on earth.