1961—2020年松辽流域作物生长季降水量十年际变化及其与水汽输送的关系  

Decadal variations of precipitation during crop growing season and its relationship with moisture transport in the Songhua-Liaohe River Basin from 1961 to 2020

作　　者：宋成玉 李永生[1] 汪靖 班晋[1] 赵佳莹[1] 王昊 SONG Chengyu;LI Yongsheng;WANG Jing;BAN Jin;ZHAO Jiaying;WANG Hao(Heilongjiang Climate Centre,Harbin 150030,China;Tianjin Institute of Meteorological Science,Tianjin 300074,China)

机构地区：[1]黑龙江省气候中心,黑龙江哈尔滨150030 [2]天津市气象科学研究所,天津300074

出　　处：《气象与环境学报》2024年第6期35-43,共9页Journal of Meteorology and Environment

基　　金：中国气象局气象能力提升联合研究专项(22NLTSY001);黑龙江省自然科学基金项目(LH2022D022);中国气象局沈阳大气环境研究所联合开放基金(2021SYIAEKFMS10)共同资助。

摘　　要：选用1961—2020年CN05.1降水观测数据和ERA5再分析资料,分析松辽流域作物生长季(5—9月)降水量十年际变化特征及其与水汽收支的关系,探讨松辽流域水汽总收支与水汽输送的关系。结果表明:松辽流域作物生长季降水量和水汽收支具有相似的十年际变化特征;有5条水汽通道影响松辽流域降水,水汽主要来自西风带和东亚夏季风的水汽输送。20世纪60—70年代松辽流域作物生长季以东亚夏季风水汽输送为主,20世纪80—90年代水汽输送为西风带和夏季风共同主导,21世纪以后主要为西风带水汽。Using CN05.1 precipitation observation data and ERA5 reanalysis data from 1961 to 2020,this study analyzes the interdecadal variations of precipitation during the crop growing season(May to September)in the Songhua-Liaohe River Basin and its relationship with moisture budget,and explores the link between total moisture budget and moisture transport in the basin.The results indicate that precipitation and the moisture budget during the crop growing season of the Songhua-Liaohe River Basin exhibit similar decadal variation patterns.Five moisture channels influence precipitation in the basin,with westerlies and the East Asian summer monsoon serving as the primary moisture sources.During the 1960s to 1970s,the moisture transport in the crop growing season was primarily dominated by the East Asian summer monsoon.In the 1980s to 1990s,both westerlies and the summer monsoon jointly influenced moisture transport.Since the 21st century,westerlies have become the dominant driver of moisture transport.

关 键 词：西风带 夏季风 水汽收支 水汽输送 

分 类 号：P468.024[天文地球—大气科学及气象学]