除了颱風眼及眼牆之外，颱風雨帶是熱帶氣旋最顯著且持續的結構特徵，它通常包含了較大的降雨及強風速區。颱風雨帶對熱帶氣旋演變及強度之重要性已被廣泛的認知，但現今對於颱風雨帶生成維持過程的看法仍相當分歧，而關於雨帶近地表的觀測特性及其基本物理過程的了解也非常不足。本研究計畫主要的科學目的在於藉由地面觀測站高時間解析度資料、全台涵蓋之都卜勒雷達網資料及微波降雨雷達資料，以蒐集具有代表性數量的颱風雨帶來詳細分析其熱動力特性及其近地面觀測特徵，以期增進我們對於颱風雨帶的了解。而研究內容也將選擇較特殊或典型之颱風雨帶，進行較詳細的個案診斷分析。
In addition to typhoon eye and eyewall, the tropical cyclone (or typhoon) rainbands (TCRs) are indeed one of the most striking and persistent structures of tropical cyclones seen from meteorological radar and satellite and often contain regions of quite heavy rain and stronger wind speeds. Potential importance of TCRs on the evolution and intensity of tropical cyclones has also been generally recognized. However, the origin and maintenance of TCRs are still quite controversial from previous investigations, and especially, the near-surface features of TCRs remain largely unresolved. The primary objective of this research project is to use temporal high-resolution surface observations, whole-island Doppler radar observing network and micro rain radar to identify a significant number of typhoon rainbands near Taiwan and to investigate dynamical and thermodynamic structures of TCRs and their associated near-surface features. Particular attempt is to understand the main features and possible diversity of TCRs. Some specially chosen cases of typhoon rainbands will also be studied in detail, further exploring the dynamical processes active within TCRs.
