大气科学2012，Vol.36Issue(6)：1269-1279,11.DOI:10.3878/j.issn.1006-9895.2012.11227
中国冬半年区域持续性低温事件的前期信号
Precursors of Regional Prolonged Low Temperature Events in China during Winter Half Year
张宗婕 1钱维宏1
作者信息
- 1. 北京大学大气与海洋科学系,北京 100871
- 折叠
摘要
Abstract
The method of physical decomposition of atmospheric variables was used to find possible precursors to indicate regional prolonged low temperature events in China. During the winter half years for 1960-2008, a total of 115 strong events had negative temperature transient anomalies in the lower troposphere and negative geopotential height transient anomalies from the middle-high troposphere to the stratosphere simultaneously. Among them, 112 events occupied the negative center of temperature transient anomalies on the 850 hPa level and the negative center of geopotential height transient anomalies on the 300 hPa level, respectively. The negative center of temperature transient anomalies on the 850 hPa level can be traced as precursors to indicate the occurrence of regional prolonged low temperature events in China over 5-9 days in advance.关键词
持续性低温事件/物理分解/高度扰动/温度扰动/前期信号Key words
prolonged low temperature events, physical decomposition, geopotential height anomalies, temperature anomalies, precursors分类
天文与地球科学引用本文复制引用
张宗婕,钱维宏..中国冬半年区域持续性低温事件的前期信号[J].大气科学,2012,36(6):1269-1279,11.
