1960-2020年安徽省极端气候时空变化及与环流指数相关性分析  

Spatial-Temporal Variation of Extreme Climate and its Correlation with Circulation Index in Anhui Province from 1960 to 2020

作　　者：马海岩 肖天贵[1,3] MA Haiyan;XIAO Tiangui(College of Atmospheric Sciences,Chengdu University of Information Engineering,Chengdu 610225,China;Anhui Meteotological Disaster Prevention Technology,Chengdu 610225,China;Research and Development Center of Natural Disaster Prevention Technology,Chengdu University of Information Engineering,Kunming 650034,China)

机构地区：[1]成都信息工程大学大气科学学院,四川成都610225 [2]安徽省气象灾害防御技术中心,安徽合肥230031 [3]成都信息工程大学云南自然灾害防御技术研发中心,云南昆明650034

出　　处：《成都信息工程大学学报》2025年第2期179-191,共13页Journal of Chengdu University of Information Technology

基　　金：国家重点研发计划资助项目(2019QZKK010402)。

摘　　要：为了解在气候变化的背景条件下,安徽省极端气候的变化情况,并结合大气环流指数,采用极端气候指标法、线性趋势分析、滑动平均、趋势检验等方法研究近61年安徽省极端气候时空变化特征及与环流指数的相关性。研究结果表明:在时间尺度上,对极端降水而言,降水量、降水强度、降水日数均呈现增多趋势;对极端气温而言,高温日数、高温极值、低温极值均呈现增大趋势,低温日数呈现减少趋势。在空间尺度上,对极端降水而言,主要呈现出自南向北逐渐减少的空间分布特征;对极端气温而言,主要呈现出南部的高温日数多于北部,北部低温日数多于南部;南部的高温极值高于北部,低温极值主要集中在中部;在大气环流相关性上,当副热带高压、青藏高压、北极涛动较强时,对安徽省极端降水和极端高温起到增强作用;当极涡、东亚和南亚夏季风较强时,安徽省极端降水减弱,极端低温增强。To better understand the changes of extreme climate in Anhui province under the background of climate change,and in combination with the atmospheric circulation index,the spatial-temporal variation characteristics of extreme climate in Anhui Province in recent 61 years and the correlation between extreme climate and general circulation index were studied by using the methods of extreme climate index,linear trend analysis,moving average and trend test.The results show that:On the time scale,for extreme precipitation,precipitation amount,precipitation intensity,and precipitation days all present an increasing trend;The number of high-temperature days,high-temperature extremum and low-temperature extremum all showed an increasing trend,while the number of low-temperature days showed a decreasing trend.On the spatial scale,for extreme precipitation,the spatial distribution is decreases from the south to the north,and for extreme temperature,the high-temperature days are more in the south than in the north,the maximum temperature in the south is higher than that in the north,and the minimum temperature is mainly concentrated in the middle,while the maximum temperature in the south is higher than that in the south,and the maximum temperature in the north is higher than that in the south.The maximum temperature in the north is higher than that in the south,and the maximum temperature in the middle is mainly concentrated in the Horse latitudes,when the Polar Vortex,East Asian summer monsoon,and South Asian summer monsoon are strong,the extreme precipitation weakens and the extreme low-temperature strengthens in Anhui province.

关 键 词：安徽省 极端降水 极端气温 大气环流指数 

分 类 号：P467[天文地球—大气科学及气象学]