(Climate Dynamics Theory)
積雲對流-輻射-大尺度環流交互作用是熱帶大氣動力學核心議題。我們的研究嘗試以 "對流準平衡" (convective quasi-equilibrium)架構為基礎，結合氣候模式模擬、大氣-海洋再分析資料、無線電探空、衛星觀測等 ，探討不同垂直結構積雲對流在能量和水氣輸送所扮演角色，以及對輻射平衡影響，最終將發展或改進一套適用於描述熱帶氣候變化和低頻氣候震盪之濕大氣動力學模型。
Interactions between cumulus convection, radiation and large-scale circulation is the core of tropical atmospheric dynamics. Based on the "convective quasi-equilibrium" framework, along with climate model simulation and observational truth from reanalysis atmosphere-ocean data, radiosonde and satellite soundings, we examine the roles of conveciton of various vertical structures in transporting energy and moisture, as well as the impact on radiation balance. We eventually aim to to develop or improve a moist atmospheric model applicable for the study of tropical climate changes and low-frequency climate oscillaitons.
(Low-frequency Climate Oscillations)
Low-frequency climate oscillations impose significant impacts on various social aspects, such as energy, agriculture, fishery, water resource and environment quality. We aim to explore the space-time features and maintenance mechanisms of natural low-frequency climatet oscillations, including Madden-Julian Oscillation (MJO), El Nino/Southern Oscillation (ENSO) and Pacific Decadal Oscillation (PDO). We also project their possible changes under global warming as well as their impacts on regional climate and weather.
(Typhoon-Climate System Interactions)
Tropical cyclone (TC) is the most powerful and devastating natural weather system on earth. Each year, about 26 TCs occur over the western North Pacific (WNP) basin. Understanding how the atmospheric and oceanic environment conditions control TC activity is the key leading to a skillful seasonal TC activity forecast. It also helps illucidate how the frequency, intensity and track of TCs over the WNP might change under the influence of anthropogenic greenhouse warming.