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投稿时间：2015-08-26 修订日期：2015-09-08
投稿时间：2015-08-26 修订日期：2015-09-08
中文摘要: 2015年7月环流特征如下：北半球极涡呈多极型，中高纬西风呈5波型分布。西太平洋副热带高压强度偏强。7月全国平均降水量88.7 mm，较常年同期偏少26.5%，为1951年来历史同期最少；全国平均气温为22.1℃，较常年同期偏高0.2℃。月内共出现7次主要降水过程，多站出现极端日降水量。7月共有5个热带气旋在西北太平洋和南海活动，生成个数与常年同期基本持平，并有2个台风(莲花和灿鸿)在我国登陆。新疆出现持续高温天气；华北、黄淮等地出现气象干旱；全国24个省（区、市）遭受风雹灾害。
中文关键词: 大气环流， 暴雨， 高温， 热带气旋
Abstract:The main characteristics of the general atmospheric circulation in July 2015 are listed as follows: there are several polar vortex centers in the Northern Hemisphere. In the mid high latitudes, the circulation presents a five wave pattern. The Northwest Pacific subtropical high is stronger than normal. Meanwhile, the monthly mean precipitation amount is 88.7 mm, which is 26.5% less than its climatological mean, the monthly mean temperature is 22.1℃, 0.2℃ higher than normal. There are 7 severe rainfall events with extreme precipitation records observed at some stations in China. Five tropical cyclones are active over the Northwest Pacific Ocean and the South China Sea, and two of them land China. Long lasting high temperature events occur in Xinjiang, and drought in North China, Huanghuai Area and other places. Meanwhile, 24 provinces suffer from hail disasters.
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引用文本：
沈晓琳,张芳华,周博坤,2015.2015年7月大气环流和天气分析[J].气象,41(10):1298-1304.
SHEN Xiaolin,ZHANG Fanghua,ZHOU Bokun,2015.Analysis of the July 2015 Atmospheric Circulation and Weather[J].Meteor Mon,41(10):1298-1304.
沈晓琳,张芳华,周博坤,2015.2015年7月大气环流和天气分析[J].气象,41(10):1298-1304.
SHEN Xiaolin,ZHANG Fanghua,ZHOU Bokun,2015.Analysis of the July 2015 Atmospheric Circulation and Weather[J].Meteor Mon,41(10):1298-1304.