研究期間：10108~10207;The main goal of this study is to establish a more accurate model to estimate typhoons’ rainfall potential for disaster mitigation missions, especially for the typhoons hitting Taiwan. Kidder et al.(2005) used satellite microwave observations, such SSM/I(Special Sensor Microwave/Imager), TMI(TRMM Microwave Imager) and AMSU(Advanced Microwave Sounding Unit) data along with the JTWC best tracks to assess the 24‐h rainfall potential. Their method, the Tropical Rainfall Potential (TRaP) Technique, can provide a fast and practical application in rainfall estimating. However, TRaP is based upon some quite assumptions, such invariant typhoon intensity and straightforwardly shift‐motion rainfall clusters. Therefore, big errors could exist. This aim of this study is to improve the TRaP technique by adding a typhoon’s real situations, such as intensity variation, rotating cloudy clusters as well as the orographic effect especially in Taiwan. Meanwhile, the historical rainfall records will be used to adjust quantitatively the rainfall rates retrieved from microwave observations to reduce the possible systematic bias. The tracks predicted by numerical weather models will be used to prolong the rainfall potential period. The path sensibility will be also investigated. Finally the improved TRaP will be experimentally operated via a net platform for preparing the possible real operational running in the future.
