The improvement of TRaP by considering typhoon intensity variation

Yu Chun Chen, Gin Rong Liu, Yen Ju Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

For years, the flash floods, mudflows and landslides brought by typhoons always cause severe loss of property and human life. For this reason, it is crucial to develop a more accurate and prompt typhoon rainfall prediction technique and thus can provide necessary rainfall potential information to the relevant disaster mitigation agencies. Kidder et al. (2005) developed the Tropical Rainfall Potential (TRaP) technique, which applied satellite-borne passive microwave radiometers, to retrieve a tropical cyclone's rainfall amount and predict its 24-h accumulated rainfall distribution. However, the effects of a tropical cyclone's rainband rotation and intensity variation were not considered in their method. To obtain a better approximation to the actual rainfall system, this study will improve the TRaP technique by considering those effects. In the typhoon intensity variation part, the method proposed by DeMaria (2006) was applied to predict the 6-h intensity change with GOES-9 and MTSAT satellites, and the result was further extended to predict the 24-h intensity change and accumulated rainfall. After comparing the predicted rainfall with the rain gauge data gathered from Taiwan's offshore small islands, it shows that the accuracy of the predicted accumulated rainfall could be improved significantly while considering the effects of rainband rotation and intensity variation.

Original languageEnglish
Title of host publication32nd Asian Conference on Remote Sensing 2011, ACRS 2011
Pages198-202
Number of pages5
StatePublished - 2011
Event32nd Asian Conference on Remote Sensing 2011, ACRS 2011 - Tapei, Taiwan
Duration: 3 Oct 20117 Oct 2011

Publication series

Name32nd Asian Conference on Remote Sensing 2011, ACRS 2011
Volume1

Conference

Conference32nd Asian Conference on Remote Sensing 2011, ACRS 2011
Country/TerritoryTaiwan
CityTapei
Period3/10/117/10/11

Keywords

  • TRaP
  • Typhoon
  • Typhoon Intensity
  • Typhoon Rainfall

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