中亚干旱地区降水异常及其影响机制研究

中亚地区位于欧亚大陆内部，地处西风控制关键区。在近年全球加速变暖的背景下，观测和模拟均展现出中亚地区的暖湿化趋势。北大西洋的海温异常激发大气的涡度异常，通过罗斯贝波列的方式传播影响中亚地区的大尺度环流和垂直运动的异常，从而导致中亚地区的降水异常。同时，赤道太平洋和北印度洋的海温异常，引起阿拉伯半岛向中亚地区的水汽输送异常，以及西风-季风协同作用、丝绸之路遥相关相位转换、地表类型和局地环流的变化等均不同程度地贡献和加速了中亚地区的暖湿化进程。本文意在总结近20年关于中亚地区降水异常的主要影响因子及其背后机理，并在现有研究基础上提出了未来的研究展望。

Review of increasing precipitation in Central Asia and its possible mechanism

Central Asia is located in the interior of Eurasia, in the key area of westerly wind control.With accelerating global warming in recent years, observations and simulations show a trend of warming and humidification in Central Asia.SST anomalies in the North Atlantic induce atmospheric vorticity anomalies, which propagate anomalies influencing large-scale circulation and vertical motion in Central Asia via Rossby wave activity, leading to an increase in precipitation anomalies.Simultaneously, the SST anomalies in the equatorial Pacific Ocean and the North Indian Ocean cause abnormal water vapor transport from the Arabian Peninsula to Central Asia, as well as the westerly-monsoon synergy, the remote correlation phase transition of the Silk Road, the changes of land surface type, local circulation and soon, which all contribute in varying degrees to the warming and humidification process in Central Asia.This paper aims to outline the main influencing factors and mechanisms of precipitation anomalies in Central Asia in the past 20 years, and to propose future research directions based on previous research.