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投稿时间：2012-08-21 修订日期：2012-09-03
投稿时间：2012-08-21 修订日期：2012-09-03
中文摘要: 2012年7月环流特征如下：欧亚中高纬呈两脊一槽型，我国中高纬多高空槽活动，西太平洋副高强度较常年偏弱，西段位置多变。7月全国平均降水量为135.2 mm，较常年同期（118.2 mm）偏多14.4%，为1951年以来同期第四多雨年；全国平均气温为22.1℃，较常年同期偏高0.4℃。月内，共出现8次强降水过程，多站出现极端日降水量。共有4个热带气旋生成，其中台风韦森特登陆广东。江南、江淮、江汉和黄淮中部等地高温日数明显偏多。
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 2012 are as follows: The circulation presented a pattern of two highs and one deep trough at the middle high latitudes over Eurasia, and the upper troughs were active. The northwestern pacific subtropical high was weaker than normal. The monthly mean precipitation amount was 135 mm, which is 14.4% more than normal. The monthly mean temperature was 22.1℃, being 0.4℃ higher than normal. There were 8 heavy rainfall processes, and extreme precipitation records were observed at many stations. Four tropical cyclones were generated over the northwestern Pacific, however, only one landed on China. The number of high temperature days is obviously more than normal in some areas, such as Jiangnan, Jianghuai, Jianghan, and huanghuai etc.
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基金项目:
| Author Name | Affiliation |
| ZHOU Ningfang | National Meteorological Centre， Beijing 100081 |
引用文本：
周宁芳,2012.2012年7月大气环流和天气分析[J].气象,38(10):1307-1312.
ZHOU Ningfang,2012.Analysis of the July 2012 Atmospheric Circulation and Weather[J].Meteor Mon,38(10):1307-1312.
周宁芳,2012.2012年7月大气环流和天气分析[J].气象,38(10):1307-1312.
ZHOU Ningfang,2012.Analysis of the July 2012 Atmospheric Circulation and Weather[J].Meteor Mon,38(10):1307-1312.