CAJ | 학술논문

2014年5月环流特征如下：北半球极涡成准圆形绕级分布，中心强度为524 dagpm，较气候平均的强度偏强4～6 dagpm，北半球高纬500 hPa 位势高度呈4波型分布，我国中东部大部地区受偏西气流控制，多短波槽活动；副热带高压较常年明显偏西偏北，南方地区出现多次强降水天气过程。另外，南海季风爆发较常年同期明显偏晚。5月全国平均气温为全国平均气温16．5℃，较常年同期（16．2℃）偏高0．3℃；全国平均降水量73．8 mm，较常年同期（69．5 mm）略偏多6．2％。月内，我国主要天气特点是：华南江南暴雨频发，华北黄淮出现极端高温。
2014년5월배류특정여하：북반구겁와성준원형요급분포，중심강도위524 dagpm，교기후평균적강도편강4～6 dagpm，북반구고위500 hPa 위세고도정4파형분포，아국중동부대부지구수편서기류공제，다단파조활동；부열대고압교상년명현편서편북，남방지구출현다차강강수천기과정。령외，남해계풍폭발교상년동기명현편만。5월전국평균기온위전국평균기온16．5℃，교상년동기（16．2℃）편고0．3℃；전국평균강수량73．8 mm，교상년동기（69．5 mm）략편다6．2％。월내，아국주요천기특점시：화남강남폭우빈발，화북황회출현겁단고온。
The main characteristics of the general atmospheric circulation in May 2014 are as follows:There is one polar vortex center in the Northern Hemisphere,and the intensity is 524 dagpm,4-6 dagpm stron-ger than normal years.The 500 hPa geopotential height presents distribution of a four-wave pattern in high latitudes of Northern Hemisphere,and the most areas in the eastern region of China are controlled by west air flow,causing more short-wave trough activities.Subtropical high is more westward and north-ward than normal,which is the main cause for the extreme precipitation seen many times in South China. Monsoon starts later than normal years over South China Sea.The monthly mean temperature is 16.5℃, 0.3℃ higher than normal.The monthly mean precipitation amount is 73.8 mm,which is 6.2% more than normal.The main weather characteristics in this month is as follows:Torrential rainfalls occur in South-ern China frequently,and extreme high temperatures appear in Northern China.