The following are the main characteristics of the general atmospheric circulation in November 2014.There was one polar vortex center in the Northern Hemisphere.The circulation presented zonal pat-terns in middle-high latitudes.The south baranch trough was active located near 100°E in general.The Northwest Pacific subtropical high was almost the same as the normal,lying by south and west.Mean-while,monthly mean precipitation amount was 22.6 mm,which is 20.2% more than its climatological mean (1 8 .8 mm ).Monthly mean temperature was 3 .9℃,1 .0℃ higher than its climatological mean (2.9℃).There were four major rainfall processes,and parts of the south of Changjiang River,and South China saw rains obviously,even with continued rainy day somewhere.In the month,there were four major cold air processes influencing China,resulting in the extreme drop in daily temperature at 26 stations,in-cluding three stations had new records for the daily temperature drop.In additon,there were also four wide spread fog-haze events in central and eastern China during this month.%2014年11月大气环流特征如下：北半球极涡呈单极型分布，亚欧地区中高纬环流以纬向环流为主；南支槽较活跃，平均位置位于100°E附近；西太平洋副热带高压与常年强度相当，位置偏南、偏西。11月，全国平均降水量22．6 mm，较常年同期（18．8 mm）偏多20．2％；全国平均气温3．9℃，较常年同期（2．9℃）偏高1．0℃。月内，共出现4次主要降水过程，江南华南部分地区降水明显，部分地区出现持续阴雨；冷空气活动频繁，有4次主要冷空气过程影响我国，造成共有26站发生极端日降温事件，其中3站日降温幅度突破历史极值；月内还有4次大范围雾、霾天气过程。
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