2013•Unpublished venueRequires access

Effect of microwave radiometer inter-calibration on rainfall accumulation for the global precipitation measurement mission

Rachael A. Kroodsma, Darren S. McKague, Christopher S. Ruf

Abstract

The effect of inter-calibration on a Level 3 rainfall product for the Global Precipitation Measurement (GPM) mission is examined using two spaceborne microwave radiometers that are currently used to derive rain measurements, the Tropical Rainfall Measuring Mission Microwave Imager (TMI) and the Special Sensor Microwave/Imager (SSM/I). It is found that inter-calibrating the microwave radiometer brightness temperatures from the two instruments improves the agreement of the derived rain accumulations between the two radiometers. The average difference between TMI and F13 derived rain accumulations is 0.60 mm/day before inter-calibration is applied. This difference decreases to 0.08 mm/day when F13 is inter-calibrated to TMI.

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Available abstract

Key concepts: Radiometer, Microwave radiometer, Global Precipitation Measurement, Microwave, Calibration, Environmental science, Remote sensing, Precipitation