Proceedings of the KSRS Conference (대한원격탐사학회:학술대회논문집)

  • Volume 2
  • /
  • Pages.930-933
  • /
  • 2006
  • /
  • 1226-9743(pISSN)
Korean Society of Remote Sensing (대한원격탐사학회)
권호 표지

RAINFALL ESTIMATION OVER THE TAIWAN ISLAND FROM TRMM/TMI DATA DURING THE TYPHOON SEASON

  • Chen, W-J (Dept. of Applied Physics, Chung Cheng Insti. of Tech., Natl. Defense Univ.) ;
  • Tsai, M-D (Dept. of Applied Physics, Chung Cheng Insti. of Tech., Natl. Defense Univ.) ;
  • Wang, J-L (Dept. of Applied Physics, Chung Cheng Insti. of Tech., Natl. Defense Univ.) ;
  • Liu, G-R (Center for Space and Remote Sensing Research, Nat'l. Central Univ.) ;
  • Hu, J-C (Dept. of Applied Physics, Chung Cheng Insti. of Tech., Natl. Defense Univ.) ;
  • Li, C-C (Dept. of Info. Manag. Ching Yun Univ.)
  • Published : 2006.11.02
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Abstract

A new algorithm for satellite microwave rainfall retrievals over the land of Taiwan using TMI (TRMM Microwave Imager) data on board TRMM (Tropical Rainfall Measuring Mission) satellite is described in this study. The scattering index method (Grody, 1991) was accepted to develop a rainfall estimation algorithm and the measurements from Automatic Rainfall and Meteorological Telemetry System (ARMTS) were employed to evaluate the satellite rainfall retrievals. Based on the standard products of 2A25 derived from TRMM/PR data, the rainfall areas over Taiwan were divided into convective rainfall area and stratiform rainfall areas with/without bright band. The results of rainfall estimation from the division of rain type are compared with those without the division of rain type. It is shown that the mean rainfall difference for the convective rain type is reduced from -6.2mm/hr to 1.7mm/hr and for the stratiform rain type with bright band is decreased from 10.7 mm/hr to 2.1mm/hr. But it seems not significant improvement for the stratiform rain type without bright band.

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