Channel selection of atmosphere vertical sounder (GIIRS) onboard the FY-4A geostationary satellite
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School of geographic sciences in East China Normal University,Meterological Satellite User′s Office of China Meteorological Administration;China Shanghai Meteorological Service,School of Geographic Sciences in East China Normal University

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    Abstract:

    In view of GIIRS, a hyperspectral vertical detector equipped on the FY-4A geostationary satellite, a channel selection experiment for the retrieval of temperature is carried out. Using line-by-line radiative transfer model, according to the information content, channels are selected by step-by-step iterative method, which can be used to describe the effective information of various atmospheric parameters in the infrared hyperspectral data. Finally, sensitive channels using for retrieval of temperature profile are obtained,56 channels in global and 58 in FY-4A detection range. The selected channels have small correlation with each other,and they have high information content, which can be used as the representative channel set for temperature profile retrieval research and data assimilation.

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YANG Yu-Han, YIN Qiu, SHU Jiong. Channel selection of atmosphere vertical sounder (GIIRS) onboard the FY-4A geostationary satellite[J]. Journal of Infrared and Millimeter Waves,2018,37(5):545~552

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History
  • Received:January 11,2018
  • Revised:March 07,2018
  • Adopted:March 09,2018
  • Online: October 31,2018
  • Published: