2000-2017年东北冷涡活动气候特征及分析  

Climate characteristics and analysis of Northeast China cold vortex activity from 2000 to 2017

作　　者：王蕾 王承伟[3] 闫敏慧[2] WANG Lei;WANG Cheng-wei;YAN Min-hui(Chengdu University of Information Technology,Sichuan Chengdu 610225;Heilongjiang Meteorological Service Center,Heilongjiang Harbin 150030;Heilongjiang Meteorological Observatory,Heilongjiang Harbin 150030)

机构地区：[1]成都信息工程大学,四川成都610225 [2]黑龙江省气象服务中心,黑龙江哈尔滨150030 [3]黑龙江省气象台,黑龙江哈尔滨150030

出　　处：《黑龙江气象》2020年第1期15-18,共4页Heilongjiang Meteorology

摘　　要：本文利用美国国家环境预报中心(NCEP)提供的2000-2017年5-8月FNL全球再分析资料,结合东北冷涡的定义,对东北冷涡过程气候特征进行统计分析,结果表明:2000-2017年5-8月共有211个东北冷涡过程,其发生频次和冷涡日数均具有明显的年际变化;东北冷涡活动主要集中于44-53°N,122-129°E之间,黑龙江省西北部与内蒙古东部交界的大兴安岭南麓地区以及黑龙江省南部与吉林交界处为东北冷涡活动的密集区,冷涡中心位置呈现明显的季节变化;东北冷涡以单中心为主,多中心冷涡数量随中心个数的增加而显著减少,高频区出现在黑龙江省中南部。This paper is based on FNL global reanalysis data from May to August of each year from 2000 to 2017 provided by NCEP, combined with the definition of Northeast China cold vortex, carries out statistical analysis on the climate characteristics of Northeast China cold vortex processes. The results show that there were 211 Northeast China cold vortex processes from May to August of each year from 2000 to 2017, with obvious annual changes in the frequency and number of cold vortex days;the Northeast China cold vortex activities were mainly concentrated at 44-53°N and 122-129°E, The southern piedmont region of Greater Khingan Range, which borders the northwest of Heilongjiang Province and the east of Inner Mongolia and the junction of Southern Heilongjiang Province and Jilin Province were Northeast China cold vortex activity intensive areas, and the central position of the cold vortex showed obvious seasonal changes;the Northeast China cold vortex was dominated by single center, the numbers of multi center cold vortex decreased significantly with the increase of the numbers of centers, and the high frequency area appeared in the south central part of Heilongjiang Province.

关 键 词：东北冷涡 气候分析 时间特征 空间特征 

分 类 号：P468.0[天文地球—大气科学及气象学]