This study presents our first discovery about two abnormal problems in the blackbody calibration target associated with the antenna unit A2 in the Metop-C AMSU-A instrument. The problems include the anomalous patterns in both blackbody kinetic temperature Tw and radiative temperature (measured in warm count or Cw). and the time lag between orbital cycles of Tw and Cw. This study furth... https://chefesquipmenters.shop/product-category/infrared-thermometers/