Algorithm 3A11 estimates monthly rain from the histogram of the brightness temperatures obtained ...
Algorithm 3A11 estimates monthly rain from the histogram of the brightness temperatures obtained from TMI calibration (1B11). This histogram is matched to a log-normally distributed rain rate distribution via a rain rate-brightness temperature relation. A beam-filling correction is applied to account for the non-uniformly filled field-of-view of the TMI sensor. Outputs are monthly surface rain rates and freezing heights for 5° x 5° grid boxes.