中山大学学报（自然科学版）2016，Vol.55Issue(2)：143-150,8.DOI:10.13471/j.cnki.acta.snus.2016.02.024
湖南冬季降水的年代际突变及其影响因子
Interdecadal change of winter rainfall over Hunan and its physical factors
摘要
Abstract
Based on the monthly rain gauge data (1 960 -201 0)from 20 stations in Hunan Province,the interdecadal change of winter precipitation over Hunan and its physical factors are investigated.The re-sults indicate that there were two abrupt changes of winter precipitation,which appeared in 1 988 and 1 998,respectively.The precipitation was less during the years of 1 973 -1 987 and 1 998 -2009,while the precipitation was more during the years of 1 988 -1 997.The interdecadal change of winter precipitati-on in Hunan was attributed to the collaborative variations of Siberian High,Arctic Oscillation,the East Asian jet stream and Eurasian teleconnection pattern.During the 1 988 -1 997 period,the intensity of Si-berian High and the East Asian jet stream was weaker,Arctic Oscillation index was higher,and the Eur-asian teleconnection pattern was in the negative phase.The aforementioned factors worked cooperatively to induce more precipitation.During the periods of 1 973 -1 987 and 1 998 -2009,these factors showed roughly opposite changes,resulting in less winter rainfall.关键词
冬季降水/湖南/EOF 分析/年代际突变Key words
winter precipitation/Hunan/EOF analysis/interdecadal change分类
大气科学引用本文复制引用
赵杰,乔云亭,王超..湖南冬季降水的年代际突变及其影响因子[J].中山大学学报（自然科学版）,2016,55(2):143-150,8.基金项目
国家重点基础研究发展计划（973计划）资助项目（2014CB953901）；国家自然科学基金资助项目（41575069）；公益性行业专项资助项目（GYHY201406018）；江苏省气候变化协同创新中心资助项目 （）
