文献类型：期刊文献

英文题名：Synergistic Effects of Multiple Monsoon Systems on Autumn Precipitation in West China

作者：Song, Luchi[1];Fan, Lingli[1];Lin, Chunqiao[1];Li, Jiahao[1];Xu, Jianjun[2]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Shenzhen Inst, Shenzhen 518120, Peoples R China

年份：2025

卷号：16

期号：4

外文期刊名：ATMOSPHERE

收录：SCI-EXPANDED(收录号：WOS:001474667400001)、、EI(收录号：20251718310342)、Scopus(收录号：2-s2.0-105003563285)、WOS

基金：This work was supported by the Major Program of the National Natural Science Foundation of China (grant number 72293604) and the Innovation Team Project of General University in Guangdong Province of China (No.2024KCXTD042). The Ideological and Political Demonstration Course for Postgraduates in Guangdong Ocean University (No. 040515032202).

语种：英文

外文关键词：East Asian Monsoon; South Asian Monsoon; Tibetan Plateau Monsoon; westerly circulation; West China autumn precipitation; SSP5-8.5 emission scenario

外文摘要：Multiple monsoon systems impact autumn precipitation in West China; however, their synergistic influence is unknown. Here, we employed statistical analysis of Global Precipitation Climatology Project Version 3.2 precipitation data, European Center for Medium-Range Weather Forecasts ERA5 reanalysis data, and Coupled Model Intercomparison Project model data, and calculated four monsoon indices to analyze the features of the East Asian Monsoon, South Asian Monsoon, Asia Zonal Circulation, and Tibetan Plateau Monsoon, as well as their synergistic impacts on autumn precipitation in West China. The East Asian Monsoon negatively influences autumn precipitation in West China through closed high pressure over Northeast China. The South Asian Monsoon encloses West China between two areas of closed high pressure; strong high pressure to the north guides the abnormal transport of cold air in Northwest China, whereas strong western Pacific subtropical high pressure guides the transport of warm and wet air to West China, which is conducive to the formation of autumn precipitation in West China. During years of strong Asia Zonal Circulation, West China is controlled by an anomalous sinking airflow, which is not conducive to the occurrence of autumn rain. During strong Tibetan Plateau Monsoon, western and southwestern China are affected by plateau subsidence flow, resulting in less precipitation. Based on the CMIP6 model data, the study found that under the SSP5-8.5 emission scenario, the future trends of the four monsoon systems will show significant differences, and the amplitude of autumn and interannual precipitation oscillations in west China will increase.