气候变化研究进展2017，Vol.13Issue(2)：103-116,14.DOI:10.12006/j.issn.1673-1719.2016.041
1961—2014年我国西南地区干湿季变化特征
Characteristics of Wet and Dry Seasons in Southwest China During 1961?2014
摘要
Abstract
By utilizing daily precipitation dataset from 1961 to 2014 in China, the characteristics of wet and dry seasons in Southwest China were analyzed. The results indicated that the wet season started from the eastern and northwestern part of this region, and the dry season started from the Sichuan Basin, southern Guizhou. The climatological wet season was longer in the mid-east and south of Southwest China, and vice versa the dry season. The onset date and length of wet and dry seasons exhibited abrupt shift in the mid-1970s to the 1980s, and it is very significant that the length of wet (dry) season became shorter (longer). There were large differences in the spatial and temporal features of the precipitation between the wet and dry season. There was more precipitation in southeastern part than in northwestern area in wet season, and the decreasing trend was observed in eastern part while increasing trend in the western part. For the dry season, there was more precipitation in the eastern Southwest China than in the western part, the precipitation in Chongqing and Guizhou showed an increasing trend, while a decreasing trend was found in Sichuan. In the anomalous wet (dry) years of wet season, the onset date was earlier (later), the end date tended to be later (earlier), the length of wet season was longer (shorter). In the anomalous earlier (later) onset years of dry season, the length of dry season was longer (shorter), and more (less) precipitation was observed in the season. The main reason of the abnormalities of wet and dry seasons in Southwest China was that the East Asia atmospheric circulation anomalies were influenced by the Pacific and Indian SST anomalies.关键词
西南区域/湿季/干季/气候特征Key words
Southwest China/wet season/dry season/climatic characteristics引用本文复制引用
贾孜拉·拜山,李维京,孙丞虎,左金清,张若楠,刘景鹏..1961—2014年我国西南地区干湿季变化特征[J].气候变化研究进展,2017,13(2):103-116,14.基金项目
国家重点基础研究发展计划项目 (2013CB430203) （2013CB430203）
公益性行业 ( 气象 ) 科研专项 (GYHY201406018) （ 气象 ）
国家自然科学基金青年基金 (41205058) （41205058）
