气候变化领域集成服务门户(CCPortal): Recent changes in climate seasonality in the inland river basin of Northwestern China

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DOI	10.1016/j.jhydrol.2020.125212
	Recent changes in climate seasonality in the inland river basin of Northwestern China
	Ning, Tingting; Feng, Qi; Li, Zongxing; Li, Zhi
发表日期	2020
ISSN	0022-1694
EISSN	1879-2707
卷号	590
英文摘要	Representing regional available water and energy conditions, variations in precipitation (P) and potential evapotranspiration (E-0) have received much attention in current studies on climate change. However, the changes in their mismatch, i.e. climate seasonally, have rarely been investigated. Considering the seasonal amplitudes of P and E-0 (delta(p) and delta(E)0, respectively), as well as their phase difference, a climate seasonally and asynchrony index (SA/) was used to analyze the seasonal distribution of the available water-energy and their mismatch in the inland river basin of Northwestern China (IRB-NWC) during 1960-2017. We found that the annual delta(p), delta(E0), and SAI all decreased during the past few decades, indicating that the mismatch between the seasonal available water and energy in IRB-NWC has improved. Attribution analysis conducted by the elasticity method indicated that the changes in delta(p) controlled the variations in SA/ throughout the area, with a relative contribution of 43.7%. Furthermore, wavelet analysis indicated that large-scale ocean-atmosphere circulation patterns (including EI Nino Southern Oscillation, Indian Ocean Dipole, Pacific Decadal Oscillation and East Asian Summer Monsoon) were significantly linked with SAI on 2-6 years scale. Our findings may provide valuable information regarding the trends and causes of climate seasonally and aid in predicting and mitigating the effects of potential future climate changes in the dry region.
英文关键词	Climate seasonality; Precipitation; Potential evapotranspiration; Climate elasticity
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS关键词	WATER-BALANCE ; REFERENCE EVAPOTRANSPIRATION ; LOESS PLATEAU ; PRECIPITATION VARIABILITY ; TEMPORAL VARIABILITY ; VEGETATION DYNAMICS ; ARID REGION ; EL-NINO ; TEMPERATURE ; CATCHMENT
WOS记录号	WOS:000599754500016
来源期刊	JOURNAL OF HYDROLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239338
作者单位	[Ning, Tingting; Feng, Qi; Li, Zongxing] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China; [Li, Zhi] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Ning, Tingting,Feng, Qi,Li, Zongxing,et al. Recent changes in climate seasonality in the inland river basin of Northwestern China[J]. 中国科学院西北生态环境资源研究院,2020,590.
APA	Ning, Tingting,Feng, Qi,Li, Zongxing,&Li, Zhi.(2020).Recent changes in climate seasonality in the inland river basin of Northwestern China.JOURNAL OF HYDROLOGY,590.
MLA	Ning, Tingting,et al."Recent changes in climate seasonality in the inland river basin of Northwestern China".JOURNAL OF HYDROLOGY 590(2020).