NOAA Climate Data Record (CDR) of AMSU-A Level 1c Brightness Temperature, Version 1.0

In addition, limb adjusted radiances for both the IMICA and operational calibrations are included for certain type of climate applications, such as atmospheric layer temperature development using the radiance datasets. The orbital swath data files include AMSU-A channels 4 through 14 (between 52.8 and 57.6 GHz) for both the IMICA calibration and the operational calibration. The inter-calibrated AMSU-A data may be updated as the sounding units are further calibrated over time.

In early 2017, a gridded version of the dataset was made available to the public. There are three types of gridding approaches: brightness temperatures of near-nadir Field of View (FOV) only, brightness temperature of FOV with minimum viewing zenith angle, and average brightness temperatures of FOVs from multiple scan positions.The gridded data are the produced using the same methodologies as the swath data, but are calculated to a 1x1 degree grid resolution with global coverage.