The The Multi-Angle Imaging SpectroRadiometer (MISR) aboard NASA’s Terra platform has maintained excellent absolute and camera-to-camera radiometric calibration over more than 25 years by employing routine bi-monthly onboard calibration procedures. Absolute radiances over uniform bright scenes are required to deviate by less than ±3% from the calibration established at the beginning of the mission.
A new MISR calibration analysis indicates that this requirement has been achieved in all channels throughout the mission except for recent calibration of the red (672 nm) band in the nadir camera. Since October 2022, the average radiances in this channel have been underestimated by about 3−4% as a result of the drift in Terra’s equator-crossing time. A set of corrections has been developed. This notice will be updated when these corrections are implemented in MISR operational processing.
Information about these products and details about product quality are available on the MISR project page hosted by NASA's Atmospheric Science Data Center (ASDC).