干旱区生态环境知识资源中心(Arid): Spatiotemporal characteristics of seasonal precipitation and their relationships with ENSO in Central Asia during 1901-2013

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	Spatiotemporal characteristics of seasonal precipitation and their relationships with ENSO in Central Asia during 1901-2013
	Chen Xi; Wang Shanshan; Hu Zengyun; Zhou Qiming; Hu Qi
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2018
卷号	28 期号:9 页码:1341-1368
英文摘要	The vulnerable ecosystem of the arid and semiarid region in Central Asia is sensitive to precipitation variations. Long-term changes of the seasonal precipitation can reveal the evolution rules of the precipitation climate. Therefore, in this study, the changes of the seasonal precipitation over Central Asia have been analyzed during the last century (1901-2013) based on the latest global monthly precipitation dataset Global Precipitation Climatology Centre (GPCC) Full Data Reanalysis Version 7, as well as their relations with El Nino- Southern Oscillation (ENSO). Results show that the precipitation in Central Asia is mainly concentrated in spring and summer seasons, especially in spring. For the whole study period, increasing trends were found in spring and winter, while decreasing trends were detected in summer and fall. Inter-annual signals with 3-7 years multi-periods were derived to explain the dominant components for seasonal precipitation variability. In terms of the dominant spatial pattern, Empirical orthogonal function (EOF) results show that the spatial distribution of EOF-1 mode in summer is different from those of the other seasons during 1901-2013. Moreover, significant ENSO-associated changes in precipitation are evident during the fall, winter, spring, and absent during summer. The lagged associations between ENSO and seasonal precipitation are also obtained in Central Asia. The ENSO-based composite analyses show that these water vapor fluxes of spring, fall and winter precipitation are mainly generated in Indian and North Atlantic Oceans during El Nino. The enhanced westerlies strengthen the western water vapor path for Central Asia, thereby causing a rainy winter.
英文关键词	Central Asia seasonal precipitation spatiotemporal pattern ENSO
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6290714
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335985
作者单位	Chen Xi, Xinjiang Institute of Ecology and Geography, CAS, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.; Wang Shanshan, Institute of Arid Meteorology, CMA, Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA, Lanzhou, Gansu 730000, China.; Hu Zengyun, Xinjiang Institute of Ecology and Geography, CAS;;Department of Geography, Hong Kong Baptist University, State Key Laboratory of Desert and Oasis Ecology;;, Urumqi;;, ;;Hong Kong 830011;;.; Zhou Qiming, Department of Geography, Hong Kong Baptist University, Hong Kong.; Hu Qi, School of Natural Resources and Department of Earth and Atmospheric Sciences, University of Nebraska- Lincoln, Nebraska, Lincoln.
推荐引用方式 GB/T 7714	Chen Xi,Wang Shanshan,Hu Zengyun,et al. Spatiotemporal characteristics of seasonal precipitation and their relationships with ENSO in Central Asia during 1901-2013[J],2018,28(9):1341-1368.
APA	Chen Xi,Wang Shanshan,Hu Zengyun,Zhou Qiming,&Hu Qi.(2018).Spatiotemporal characteristics of seasonal precipitation and their relationships with ENSO in Central Asia during 1901-2013.Journal of Geographical Sciences,28(9),1341-1368.
MLA	Chen Xi,et al."Spatiotemporal characteristics of seasonal precipitation and their relationships with ENSO in Central Asia during 1901-2013".Journal of Geographical Sciences 28.9(2018):1341-1368.