近21年东北雨季变化特征  

Variation Characteristics of Rainy Season in Northeast China in Recent 21 Years

作　　者：王明亮 胡犁月 金磊 邵长亮[4] 白宏禹 WANG Ming-liang;HU Li-yue;JIN Lei(Dandong Meteorological Bureau,Dandong,Liaoning 118000;Xingan County Meteorological Bureau,Ji’an,Jiangxi 331300;Meteorological Bureau of Ewenki Autonomous Banner of Inner Mongolia Autonomous region,Hulun Buir,Inner Mongolia 021100)

机构地区：[1]丹东市气象局,辽宁丹东118000 [2]江西省新干县气象局,江西吉安331300 [3]内蒙古自治区鄂温克族自治旗气象局,内蒙古呼伦贝尔021100 [4]中国气象局气象探测中心,北京100081

出　　处：《安徽农业科学》2022年第20期197-200,共4页Journal of Anhui Agricultural Sciences

基　　金：中华环境保护基金会美团外卖青山公益专项基金项目(CEPFQS202169-28);中国气象局气象探测中心观测试验项目(SY2021025);中国气象局气象探测中心青年科技课题(MOCQN202109)。

摘　　要：为研究我国东北雨季平均降雨量特征,将我国东北按照地理位置划为4个区域(包括黑龙江、吉林、辽宁、内蒙古东部),并利用1997—2017年我国208个测站观测数据,采用统计方法、相关性和线性趋势等方法,统计东北雨季的平均降雨量、持续天数、综合强度、开始/结束时间变化的基本特征。结果表明,1997—2017年东北雨季平均起止日期分别为6月27日和9月9日。1997—2017年东北雨季平均降雨量和天数变化均存在较大年际差异,平均降雨量1998年最多(461.7 mm),2007年最少(141.4 mm);天数2014年最长(109 d),2000年最短(58 d);且年平均降雨量为313.21 mm,年平均持续天数为84 d。东北雨季平均降雨量受到多个因素的综合影响,其中东北雨季平均降雨量和雨季持续天数呈现显著正相关,相关系数为0.815。To study the characteristics of average rainfall in the rainy season in Northeast China,Northeast China is divided into four regions(including Heilongjiang,Jilin,Liaoning,eastern Inner Mongolia)according to their geographic location,and using the observation data of 208 stations in my country from 1997 to 2017,statistical methods,correlations and linear trends are used to count the basic characteristics of the average rainfall,duration,comprehensive intensity,and start/end time changes in the northeast rainy season.The results showed that the average start and end dates of the rainy season in Northeast China from 1997 to 2017 were June 27 and September 9.The average rainfall and the number of days in the rainy season in Northeast China from 1997 to 2017 had large interannual differences.The average rainfall in 1998 was at most(461.7 mm),and in 2007 at least(141.4 mm);the number of days was the longest in 2014(109 days),and the shortest in 2000(58 days).The average annual rainfall was 313.21 mm,and the average annual duration was 84 days.The average rainfall in the rainy season in Northeast China was affected by multiple factors.Among them,the average rainfall in the rainy season in Northeast China and the number of days in the rainy season showed a significant positive correlation,with a correlation coefficient of 0.815.

关 键 词：东北雨季 变化特征 起止日期 降雨量 综合强度 持续天数 

分 类 号：P461[天文地球—大气科学及气象学]