气象2012，Vol.38Issue(7)：884-889,6.
2011／2012年冬季我国异常低温特征及可能成因分析
Features and Possible Causes for the Low Temperature in Winter 2011/2012
摘要
Abstract
During the winter （December 2011-February 2012）, the surface air temperatures were below normal in most China, and the mean temperature in China was -4.8°C, being the coldest winter since1986. The extreme low temperature climate events were prevailed in China such as the extremes of daily temperature drop （DTD）, which were observed in Inner Mongolia, Xinjiang, Xizang and Shaanxi. Thepossible cause for the extreme low temperatures in China was investigated by using the conventional obser- vational temperatures and NCEP reanalysis datasets. The results have shown that the strong East Asianwinter monsoon might be responsible for occurrence of extreme low temperatures, with dominating of anomalous cold high pressure system over the Siberian Plain, persistence of blocking system over the UralLa Nina might cause the abnormally stronger East Asian winter monsoon.关键词
冬季低温/冬季风/拉尼娜Key words
low temperature/winter monsoon/La Nina分类
天文与地球科学引用本文复制引用
孙丞虎,任福民,周兵,龚志强,左金清,郭艳君..2011／2012年冬季我国异常低温特征及可能成因分析[J].气象,2012,38(7):884-889,6.基金项目
973项目（2012CB955901、2010CB950501和2010CB950404）科技支撑项目（2009BAC51805和2007BAC29804）共同资助 （）
