Normalization Method and Application for MODIS TEB Assessments Using Earth Scene Measurements

Abstract

The Terra and Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) sensors have been on-orbit for more than 20 and 18 years, respectively, and have provided continuous global observations for science research and applications. On-orbit calibration updates are important to track instrument response changes and maintain data product quality. MODIS has 36 spectral bands, among which bands 20 to 25 and 27 to 36 are the thermal emissive bands (TEBs) with a wavelength range from 3.8 to 14.2 μm. The MODIS TEBs radiometric calibration uses a quadratic function for instrument response, and the calibration coefficients look-up tables (LUTs) are updated using its on-board blackbody's (BB) response (