摘要
Abstract
Using global monthly data during 1948 -2011 provided by NCEP -NCAR, monthly average data was accumulated, through EOF method, characteristics of water vapor transport over eastern China in winter were studied.The results showed that water vapor transport in Dec., Jan., Feb.is always west wind , abnormal large value area is located in the Pacific Area;The meridional water vapor transport in eastern China in winter is always south wind , abnormal large value area is located in Yunnan .In the first space mode , water vapor transfer is always southeast wind and northeast wind in Dec.and Jan.respectively in east of 105°E, water vapor transfer is always southeast wind in Feb.in east of 120°E;in the second space mode, water vapor transfer in east of 110°E in Dec.and east of 90°E in Jan.is always south wind, water vapor transfer in east of 105°E in Feb.is always southwest wind;in the third space mode, water vapor transfer in east of 105°E in Dec.is southwest wind, water vapor transfer in Jan.in southeast region is southwest wind, water vapor transfer in east of 95°E in Feb.is south wind.The first 3 modal time se-ries showed that the water vapor transport over Eastern China has obvious inter -decadall and inter-annual variation.关键词
水汽输送/年代际变化/我国东部Key words
Water vapor transport/Inter-decadal variation/Eastern China分类
农业科技
