干旱区生态环境知识资源中心(Arid): Identifying a transition climate zone in an arid river basin using the evaporative stress index

Arid

DOI	10.5194/nhess-19-2281-2019
	Identifying a transition climate zone in an arid river basin using the evaporative stress index
	Liu, Yongqiang 1; Hao, Lu 2; Zhou, Decheng 2; Pan, Cen 2; Liu, Peilong 2; Xiong, Zhe 3; Sun, Ge 4
通讯作者	Liu, Yongqiang
来源期刊	NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
ISSN	1561-8633
EISSN	1684-9981
出版年	2019
卷号	19 期号:10 页码:2281-2294
英文摘要	Aridity indices have been widely used in climate classification. However, there is not enough evidence for their ability in identifying the multiple climate types in areas with complex topography and landscape, especially in those areas with a transition climate. This study compares a traditional meteorological aridity index (AI), defined as the ratio of precipitation (P) to potential evapotranspiration (PET), with a hydrological aridity index, the evaporative stress index (ESI) defined as the ratio of actual evapotranspiration (AET) to PET in the Heihe River Basin (HRB) of arid northwestern China. PET was estimated using the Penman-Monteith and Hamon methods. The aridity indices were calculated using the high-resolution climate data simulated with a regional climate model for the period of 1980-2010. The climate classified by AI shows a climate type for the upper basin and a second type for the middle and lower basin, while three different climate types are found using ESI, each for one river basin, indicating that only ESI is able to identify a transition climate zone in the middle basin. The difference between the two indices is also seen in the interannual variability and extreme dry/wet events. The magnitude of variability in the middle basin is close to that in the lower basin for AI, but different for ESI. AI had a larger magnitude of the relative interannual variability and a greater decreasing rate from 1980 to 2010 than ESI, suggesting the role of local hydrological processes in moderating extreme climate events. Thus, the hydrological aridity index is better than the meteorological aridity index for climate classification in the arid Heihe River Basin.
类型	Article
语种	英语
国家	USA ; Peoples R China
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000491150700001
WOS关键词	AGRICULTURAL DROUGHT ; PRECIPITATION ; EVAPOTRANSPIRATION
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
EI主题词	2019-10-17
来源机构	中国科学院大气物理研究所 ; 南京信息工程大学 ; E18
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310301
作者单位	1.US Forest Serv, Ctr Forest Disturbance Sci, USDA, Athens, GA 30602 USA; 2.Nanjing Univ Informat Sci & Technol, Coll Appl Meteorol, Int Ctr Meteorol Ecol & Environm, Jiangsu Key Lab Agr Meteorol, Nanjing, Jiangsu, Peoples R China; 3.Chinese Acad Sci, Inst Atmospher Phys, Beijing, Peoples R China; 4.US Forest Serv, Eastern Forest Environm Threat Assessment Ctr, USDA, Raleigh, NC USA
推荐引用方式 GB/T 7714	Liu, Yongqiang,Hao, Lu,Zhou, Decheng,et al. Identifying a transition climate zone in an arid river basin using the evaporative stress index[J]. 中国科学院大气物理研究所, 南京信息工程大学, E18,2019,19(10):2281-2294.
APA	Liu, Yongqiang.,Hao, Lu.,Zhou, Decheng.,Pan, Cen.,Liu, Peilong.,...&Sun, Ge.(2019).Identifying a transition climate zone in an arid river basin using the evaporative stress index.NATURAL HAZARDS AND EARTH SYSTEM SCIENCES,19(10),2281-2294.
MLA	Liu, Yongqiang,et al."Identifying a transition climate zone in an arid river basin using the evaporative stress index".NATURAL HAZARDS AND EARTH SYSTEM SCIENCES 19.10(2019):2281-2294.