东亚夏季风和西太副高与贵州麻江汛期旱涝关系分析  

Relationship between East Asian Summer Monsoon and West Pacific Subtropical High and Drought Flood in Flood Season in Majang County,Guizhou Province

作　　者：周尚春 吴虑 杨滨璐 顾衡 舒冬香 ZHOU Shangchun(Majiang Meteo-rological Station of Guizhou Province,Majiang,Guizhou 557600)

机构地区：[1]贵州省黔东南州麻江县气象局,贵州麻江557600 [2]贵州省黔东南州凯里市气象局,贵州凯里556000

出　　处：《农业灾害研究》2022年第6期140-142,共3页Journal of Agricultural Catastrophology

摘　　要：利用贵州省麻江县国家站1961—2020年汛期(4—9月)年总降水距平百分率、东亚夏季风指数强度、西太平洋副热带高压1961—2020年(4—9月)特征指数,探讨了东亚夏季风和西太副高与贵州省麻江县汛期旱涝的关系。结果表明,东亚夏季风的强度、西太副高的活动与麻江县汛期旱涝存在联系。在夏季风弱年,麻江县汛期以正常偏涝为主;夏季风强年,麻江县汛期以正常为主,在2018年麻江县汛期降水处于异常偏多时期;夏季风正常年,麻江县汛期以正常偏旱为主,2015年麻江县汛期降水为异常偏多年。当西太副高面积扩大或者强度增强时,麻江县汛期降水偏多;在降水偏多时,西太副高西伸脊点偏西。东亚夏季风与西太副高的关系是复杂的,强弱夏季风年,西太副高的特征指数存在明显的差异。The relationship between east Asian summer monsoon and west Pacific subtropical high and drought/flood in flood season in Majang County,Guizhou Province was studied by using the percentage of annual total precipitation anomaly,the intensity of East Asian summer monsoon index and the characteristic index of west Pacific subtropical high during 1961~2020 in Majang County,Guizhou Province.The results show that the intensity of east Asian summer monsoon and the activity of west Pacific subtropical high have a certain relationship with drought and flood in flood season in Majang County.In the summer monsoon weak years,Majang county flood season was mainly normal partial waterlogging;In the year of strong summer monsoon,the flood season in Majjiang County is mainly normal.In 2018,the precipitation in flood season in Majjiang County is abnormal for many years.In normal summer monsoon years,Majang County was mainly dry in flood season.In 2015,Majang County had abnormal precipitation in flood season.When the western Pacific subtropical high area enlarges or strength enhancement,majiang county flood season precipitation more;The ridge point of western Pacific subtropical high is west.The relationship between the east Asian summer monsoon and the western Pacific subtropical high is complicated,strong or weak summer monsoon years,western Pacific subtropical high characteristics index difference was obvious.

关 键 词：东亚夏季风 汛期旱涝 西太平洋副热带高压 

分 类 号：P426.6[天文地球—大气科学及气象学]