Intercalibration of the GPM Microwave Radiometer Constellation | Zendy

Wesley Berg | Zendy; Stephen Bilanow | Zendy; Ruiyao Chen | Zendy; Saswati Datta | Zendy; David Draper | Zendy; Hamideh Ebrahimi | Zendy; Spencer Farrar | Zendy; W. Linwood Jones | Zendy; Rachael Kroodsma | Zendy; Darren McKague | Zendy; Vivienne H. Payne | Zendy; James Z. Wang | Zendy; T. T. Wilheit | Zendy; John Xun Yang | Zendy

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Intercalibration of the GPM Microwave Radiometer Constellation

Author(s) -

Wesley Berg,

Stephen Bilanow,

Ruiyao Chen,

Saswati Datta,

David Draper,

Hamideh Ebrahimi,

Spencer Farrar,

W. Linwood Jones,

Rachael Kroodsma,

Darren McKague,

Vivienne H. Payne,

James Z. Wang,

T. T. Wilheit,

John Xun Yang

Publication year - 2016

Publication title -

journal of atmospheric and oceanic technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.774

H-Index - 124

eISSN - 1520-0426

pISSN - 0739-0572

DOI - 10.1175/jtech-d-16-0100.1

Subject(s) - remote sensing , radiometer , calibration , environmental science , microwave , satellite , constellation , special sensor microwave/imager , brightness temperature , microwave radiometer , global precipitation measurement , meteorology , precipitation , computer science , physics , geology , telecommunications , quantum mechanics , astronomy

The Global Precipitation Measurement (GPM) mission is a constellation-based satellite mission designed to unify and advance precipitation measurements using both research and operational microwave sensors. This requires consistency in the input brightness temperatures (Tb), which is accomplished by intercalibrating the constellation radiometers using the GPM Microwave Imager (GMI) as the calibration reference. The first step in intercalibrating the sensors involves prescreening the sensor Tb to identify and correct for calibration biases across the scan or along the orbit path. Next, multiple techniques developed by teams within the GPM Intersatellite Calibration Working Group (XCAL) are used to adjust the calibrations of the constellation radiometers to be consistent with GMI. Comparing results from multiple approaches helps identify flaws or limitations of a given technique, increase confidence in the results, and provide a measure of the residual uncertainty. The original calibration difference...

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