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Retrieval of Precipitation by Using Himawari-8 Infrared Images
SUN Shaohui, LI Wanbiao, HUANG Yipeng
Acta Scientiarum Naturalium Universitatis Pekinensis    2019, 55 (2): 215-226.   DOI: 10.13209/j.0479-8023.2018.101
Abstract1218)   HTML    PDF(pc) (8539KB)(370)       Save

Using the matched data between infrared images of the geostationary meteorological satellite Himawari-8 and the product 2AGPROFGMI of Global Precipitation Measurement (GPM), the matched infrared brightness temperature (BT), brightness temperature difference (BTD) and surface precipitation are connected by pixel to pixel. Further more, because of the advantage of the more channels of geostationary meteorological satellite, two-dimensional and three-dimensional lookup tables of rain rate (RR) are established with the matched infrared brightness temperature, brightness temperature difference and surface precipitation. The lookup tables which can identify the rain rate of different grades are found by the retrieval tests. The three-dimensional lookup tables (BT10.4, BTD12.4-10.4, BTD6.2-7.3) show higher probability of detection (POD=0.8817) and lower false alarm rate (FAR=0.4042) when detecting the rain, so it can identify the areas of rainfall.

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