气候变化领域集成服务门户(CCPortal): Investigation of precipitation concentration and trends and their potential drivers in the major river basins of Central Asia

CCPortal

DOI	10.1016/j.atmosres.2020.105128
	Investigation of precipitation concentration and trends and their potential drivers in the major river basins of Central Asia
	Yang P.; Zhang Y.; Xia J.; Sun S.
发表日期	2020
ISSN	0169-8095
卷号	245
英文摘要	Understanding temporal and spatial changes in precipitation has far-reaching implications for watershed development and risk assessment under global climate change. In our study, temporal and spatial variability in precipitation concentration (PC) in Central Asia (CA) from 1980 to 2017, measured with the precipitation concentration index (PCI) and Gini Coefficient (GC), was analyzed using interpolated precipitation from the Climate Prediction Center (CPC) and National Centers for Environmental Prediction (NCEP). The results showed that: (1) interpolated precipitation increased significantly, with significant mutations (P < .5) mainly concentrated between 2000 and 2010; (2) the spatial distribution of the CPC PCI was opposite to that of the NCEP PCI, and fluctuations in CPC GC were larger than that of the NCEP, which indicated that the precipitation data from NCEP was more uniform over the year; (3) for two of three interpolation methods, CPC PC displayed significant mutations in southern CA between 1985 and 2005, while significant (P < .05) mutations in NCEP PC were relatively concentrated in southern CA between 1987 and 2005; (4) although the El Niño Modoki Index (EMI), Pacific Decadal Oscillation (PDO), Nino 3.4, and Southern Oscillation Index (SOI) displayed resonance relationships with CPC PCI, there were no significant abrupt changes in the resonance correlation. In the NCEP data, EMI, PDO, Nino 3.4, and North Atlantic Oscillation (NAO) led to mutations in the resonance relationship with PCI. Our research proved that the change in PC in CA had closely relationship with some teleconnection indices. © 2020 Elsevier B.V.
关键词	Atmospheric pressure Resonance Risk assessment Climate prediction centers Interpolated precipitation National centers for environmental predictions North Atlantic oscillations Pacific decadal oscillation Southern oscillation index Temporal and spatial changes Temporal and spatial variability Climate change
语种	英语
来源机构	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132364
推荐引用方式 GB/T 7714	Yang P.,Zhang Y.,Xia J.,et al. Investigation of precipitation concentration and trends and their potential drivers in the major river basins of Central Asia[J]. Atmospheric Research,2020,245.
APA	Yang P.,Zhang Y.,Xia J.,&Sun S..(2020).Investigation of precipitation concentration and trends and their potential drivers in the major river basins of Central Asia.,245.
MLA	Yang P.,et al."Investigation of precipitation concentration and trends and their potential drivers in the major river basins of Central Asia".245(2020).