摘要
2010年9月大气环流主要特征如下:北半球极区呈单极涡型,中高纬地区环流呈4波型分布,冰岛东部上空500hPa高度场有120 gpm正距平;西北太平洋副热带高压强度偏强,西脊点位于24°N、100°E附近,比常年偏西偏北。2010年9月全国平均气温17.1℃,比常年偏高1.1℃;全国降水量为85.1 mm,比常年同期偏多19.7 mm。月内出现了3次较明显的冷空气过程和7次降水过程,有4个台风生成,分别名为"玛瑙"、"莫兰蒂"、"凡亚比"和"马勒卡",其中"莫兰蒂"和"凡亚比"登陆我国,造成重大灾害。
The following are the main characteristics of the general circulation of atmosphere in September 2010.The polar vortex center over the Northern Hemisphere is single.The circulation presents a fourwave pattern in middle-high latitudes.A negative anomaly with more than 120 gpm difference is found over the sea east of Iceland on 500 hPa geopotential height field.The intensity of the subtropical high over the Northwest Pacific is stronger than the corresponding period of normal years.The location for the west ridge spot is near 24°N,100°E,which is more northerly and more west than normal years.The monthly mean temperature（17.1℃） is 1.1 C higher than the same period of normal years and the national mean precipitation（85.1 mm） is 19.7 mm more than the same period of normal years.In this month,there were 3 obvious cold air processes and 7 precipitation processes,4 tropical cyclones generated,which were named Malou,Meranti,Fanapi,and Malakas respectively,in which Meranti and Fanapi landed in China and resulted in heavy damages.
出处
《气象》
CSCD
北大核心
2010年第12期116-121,共6页
Meteorological Monthly
关键词
高温
登陆台风
冷空气
暴雨
大风
high temperature
landfall tropical cyclone
cold air
heavy rain
gale
