气象2018，Vol.44Issue(2)：334-340,7.DOI:10.7519/j.issn.1000-0526.2018.02.014
2017年11月大气环流和天气分析
Analysis of the November 2017 Atmospheric Circulation and Weather
尤媛 1马学款 1李思腾2
作者信息
- 1. 国家气象中心,北京100081
- 2. 中国气象局北京城市气象研究所,北京100089
- 折叠
摘要
Abstract
The main characteristics of the general atmospheric circulation in November 2017 are as follows.There are two polar vortex centers in the Northern Hemisphere.The circulation in Eurasian middle-high latitudes showed a four-wave pattern.The East Asia major trough was stronger than normal.The northwestern Pacific subtropical high was stronger than normal,located more westward.The south branch trough was located around 90°E averagely.The monthly mean precipitation amount was 15.9 mm,which is 15.3％ less than normal.In November,precipitation was characterized by more rainy days in the south of the Yangtze River and Southern China.Torrential rainfall events occurred over 58 stations,and the daily rainfall amount of 12 stations exceeded the maximum records in November.Meanwhile,the monthly mean temperature was 3.6℃,which is 0.7℃ higher than normal.The daily maximum air temperature at 55 stations exceeded the historic high in November,and the daily minimum air temperature of 7 stations broke the lowest value in autumn in history.Four waves of strong cold air processes,three major rainfall processes and one fog-haze weather events occurred during this month.关键词
大气环流/冷空气/降水/雾-霾Key words
atmospheric circulation/cold air/rainfall/fog-haze分类
天文与地球科学引用本文复制引用
尤媛,马学款,李思腾..2017年11月大气环流和天气分析[J].气象,2018,44(2):334-340,7.
