Analysis of the November 2014 Atmospheric Circulation and Weather
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 patterns 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. Meanwhile, monthly mean precipitation amount was 22.6 mm, which is 20.2% more than its climatological mean (18.8 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, including 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.