The Wide Field Camera (WFC) aboard the joint NASA/French Space Agency Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite was a fixed, nadir-viewing imager with a single spectral channel covering the 620-670 nm wavelength region. As part of NASA’s A-Train constellation of satellites, CALIPSO flew with NASA’s Aqua satellite, and the WFC spectral band sensitivity was designed to match Band 1 of Aqua’s Moderate Resolution Imaging Spectroradiometer (MODIS) instrument. 

The WFC acquired cloud imagery data to provide information about cloud type, cloud amount, and cloud top temperature. Due to errors in the Level 0 data from the WFC starting on April 2020, the CALIPSO team suspended processing and distribution of the Level 1 standard and expedited WFC products.