吉林省夏季空中水资源分布特征  

Distribution Characteristics of Air Water Resources in Jilin Province in Summer

作　　者：王丽伟 许晖 张一博 黄晓龙 WANG Liwei(Jilin Meteorological Information Network Center,Changchun,Jilin 130062)

机构地区：[1]吉林省气象信息网络中心,吉林长春130062 [2]四川省气象探测数据中心,四川成都610072

出　　处：《农业灾害研究》2022年第2期101-103,共3页Journal of Agricultural Catastrophology

基　　金：吉林省气象局课题(201924);吉林省气象局课题(2015011);吉林省气象局课题(201527)。

摘　　要：利用吉林省1981—2015年50个气象站夏季逐日降水和同期NCEP/NCAR再分析资料,分析了吉林夏季有效大气可降水量和降水转化率时空变化特征。结果表明:吉林省有效大气可降水量和降水转化率夏季、同期各月,以及多雨年与少雨年均呈由南向西北和东部减少趋势。有效大气可降水量空间前3个模态分别为全区一致型、东西和南北差异型。近35 a吉林有效大气可降水量呈减少趋势,年代际变化存在8 a的显著周期,降水转化率年际变化较平稳,年代际变化波动较大,存在9 a的显著周期。Based on the summer daily precipitation and NCEP/NCAR reanalysis data of 50 meteorological stations in Jilin province from 1981 to 2015,the temporal and spatial variation characteristics of effective atmospheric precipitable water and precipitation conversion rate in Jilin province in summer were analyzed.The results showed that the effective atmospheric precipitation and precipitation conversion rate in Jilin decrease from south to northwest and East in summer,months in the same period,rainy years and less rainy years.The first three spatial modes of effective atmospheric precipitable water were regional consistent type,east-west and North-South difference type.In recent 35years,the effective atmospheric precipitable water in Jilin province showed a decreasing trend,and the interdecadal variation had a significant period of 8 years.The interannual variation of precipitation conversion rate was relatively stable,the interdecadal variation fluctuates greatly,and there was a 9-year significant cycle.

关 键 词：有效大气可降水量 降水转化率 吉林 

分 类 号：P426.6[天文地球—大气科学及气象学]