摘要
2008-2009年濮阳市出现了秋冬连旱。分析结果表明：自20世纪70年代中期以来，秋、冬季节本地进入了降水偏少的气候阶段，此次干旱是在本地降水偏少、气温偏高的年代际背景下发生的；在秋、冬季节，西太平洋副热带高压面积大、强度强、西伸脊点偏东、脊线偏南的年份，本地出现降水偏少、气温偏高的气候概率较大，2008—2009年秋冬季副高具有上述特征。
Autumn and winter continuous drought was happened from 2008 to 2009 in Puyang city. The result indicates Puyang has entered the little precipitation stage in autumn and winter since 1970s; the drought occurred with interdecadal background of little precipitation and high temperature. When the area is big of West Pacific subtropical high, the intensity is strong, the western ridge point towards the east, the ridge line moves southward in autumn and winter, the climate probability with little precipitation and high temperature is bigger. The subtropical high in autumn and winter from 2008 to 2009 had above characteristics.
出处
《气象与环境科学》
2010年第B09期155-158,共4页
Meteorological and Environmental Sciences
关键词
干旱成因
西太平洋副热带高压
特征值
青藏高原高度距平
drought origin
West Pacific subtropical high
characteristic value
Tibetan Plateau altitude departure
