Analysis of spatiotemporal variation characteristics of extreme weather in summer and its correlation with atmospheric circulation: taking the research on Heyuan area as an example
Lin Shanshan, Deng Lixia, Li Siling, Li Peifeng, Xu Dandan
Longchuan County Meteorological Bureau of Guangdong Province,Longchuan 517300
Abstract：To reveal the spatiotemporal patterns of extreme weather in summer in Heyuan area and its correlation with atmospheric circulation,based on the daily data of six meteorological stations in the area from 1961 to 2023 during summer,ten extreme indices were selected.Linear regression,MannKendall test,IDW interpolation and other methods were used to analyze their spatiotemporal characteristics and circulation influence mechanisms.The results show that the extreme precipitation index shows a nonsignificant upward trend and a sudden change occurred in 1998.The extreme high temperature index has shown a significant upward trend,with 2003 being the turning point.In terms of space,extreme precipitation is more in the south than in the north,and extreme high temperatures are more in the north than in the south.The area index of the Western Pacific subtropical high and the index of the East Asian summer monsoon are significantly positively correlated with extreme precipitation,while the intensity index of the South Asian high and others are significantly positively correlated with extreme high temperatures.Research can provide a basis for local extreme weather early warning and disaster prevention and mitigation.
林珊珊, 邓丽霞, 李思玲, 李培锋, 徐丹丹. 夏季极端天气时空变化特征及大气环流关联分析——以河源地区研究为例[J]. 气象水文海洋仪器, 2026, 43(5): 82-85.
Lin Shanshan, Deng Lixia, Li Siling, Li Peifeng, Xu Dandan. Analysis of spatiotemporal variation characteristics of extreme weather in summer and its correlation with atmospheric circulation: taking the research on Heyuan area as an example. Meteorological Hydrological and Marine Instrument, 2026, 43(5): 82-85.
2026, Vol. 43 
