冬季环流与赤峰地区夏季旱涝  

General Circulation in Winter and Drought and Flood over Chifeng Inner Mongolia in Summer

作　　者：程玉琴 张少文 徐钰强 胡桂杰 

机构地区：[1]内蒙古自治区赤峰市气象台,024000

出　　处：《气象》2001年第11期44-46,56,共4页Meteorological Monthly

摘　　要：夏季旱涝与冬季环流关系密切。亚洲地区冬季纬向环流异常偏强 ,经向环流偏弱 ,同时 1月的极涡所在纬度 (简称极涡纬度 )偏南时 ,极易造成赤峰地区夏季洪涝 ;相反 ,纬向环流偏弱 ,经向环流偏强 ,同时 1月份的极涡纬度异常偏北时 ,极易造成赤峰地区夏季干旱。据此 ,把冬季环流进行分型 。Winter circulation and summer drought and flood is closely related.When the longitudinal circulation in winter is unusually strong the meridianal circulation is weaker.Meanwhile,when the north pole ovrtex tends to the south in January flood and drought would be caused easily in Chifeng area in summer.

关 键 词：环流指数 极涡 夏季 降水 赤峰地区 旱涝灾害 短期气候预测 

分 类 号：P426.616[天文地球—大气科学及气象学] P456.3