2014年6月大气环流和天气分析

Analysis of the June 2014 Atmosphere Circulation and Weather

2014年6月大气环流特征为:北半球极涡呈双极型,较常年略偏强;西太平洋副热带高压强度较常年同期偏强,南海季风爆发较常年偏晚3候。2014年6月,全国平均气温为20.5℃,较常年同期(20.0℃)偏高0.5℃,与常年相比全国大部地区气温接近常年同期或偏高。南方地区人梅开始晚,降雨量偏少,江淮地区出现空梅。江淮、黄淮、长江中下游降水偏少20%以上。全国平均降水量为100.7 mm,较常年同期(99.3 mm)略偏多1.4%。月内出现4次主要的降水过程。南方强降水天气较多,多地遭受洪涝灾害,云南干旱有所缓解,东北、华北等地多阵性降水;全国22个省(区、市)遭受风雹灾害。全国101个站发生极端高温事件。今年第7号台风海贝思在广东登陆,是今年第一个登陆我国的台风。

The following are the main characteristics of the general circulation of atmosphere in June 2014:There are two polar vortex centers in the Northern Hemisphere with more stronger strength than normal years.The intensity of the West Pacific subtropical high is stronger than climatological normals.The monsoon of the South Sea of China occurs 15 days later than usual.The monthly mean temperature over China is 20.5℃,0.5℃ higher than the corresponding period of normal years.Meiyu begins late in the south this year,causing the precipitation amount there to be 20%less than normal.However,the mean precipitation(100.7 mm) of the whole country is 1.4%more than normal(99.3 mm).There are 4 main precipitation processes during the month.Severe precipitation occurs more in the South of China while showery rains occurs more in the northeast.And the drought in Yunnan is mitigated somewhat.High temperature event occurs at 101 stations.Strong wind and hail disasters hit 22 provinces.Typhoon Hagibis lands Guangdong Province,which is the first landing typhoon in China this year.