气象与环境学报Issue(1)：57-63,7.DOI:10.3969/j.issn.1673-503X.2014.01.009
辽宁冬季气温变化特征及与东亚冬季风的关系
Variation characteristics of winter air temperature in Liaoning province and its relations with East Asia winter monsoon
摘要
Abstract
Based on the monthly mean temperature data from 53 observational stations in Liaoning province during 1961 to 2012 and the NCEP/NCAR reanalysis data such as the monthly mean height field,wind field and sea sur-face pressure,the spatial and temporal features of the winter air temperature were analyzed.The previous defini-tions of six East Asian winter monsoon indexes were reviewed and calculated,and the relationships of winter air temperature in Liaoning province with the six indexes were compared.The results show that the mean variance of winter air temperature is greater in the eastern region than in the western region during 1961 to 2011,and it is in a significant positive trend in most regions of Liaoning province.The first pattern of EOF shows that winter air tem-perature in Liaoning province is abnormal high or low.The time coefficient is in a significant increasing trend and the abrupt change occurs in 1977.There are cycles of 4.5 years,2.0 years and 3.0 years for winter air temperature in Liaoning province.The East monsoon index defined by Zhu has the best relationship with winter air temperature in Liaoning province regardless of the abrupt change time,periodic characteristics,correlation coefficients and in-verting corresponding relations.The relationship can be clearly explained in 850 hPa meridional wind field and sea surface pressure field.关键词
东亚冬季风指数/EOF/最大熵谱分析Key words
East Asian winter monsoon index/EOF (empirical orthogonal function)/Maximum entropy spectrum analysis分类
天文与地球科学引用本文复制引用
房一禾,张运福,邵鹏程,周放,赵连伟,姜鹏,于杨..辽宁冬季气温变化特征及与东亚冬季风的关系[J].气象与环境学报,2014,(1):57-63,7.基金项目
公益性行业（气象）科研专项“近百年全球陆地气候变化监测技术与应用”（GYHY201206012）资助。 （）
