Drought indices: aggregation is necessary or it is only the researcher's choice

doi:10.2166/ws.2021.163

	Drought indices: aggregation is necessary or it is only the researcher's choice
	Faiz, Muhammad Abrar 1; Zhang, Yongqiang 1; Ma, Ning 1; Baig, Faisal 2,3; Naz, Farah 4; Niaz, Yasir 5
刊名	WATER SUPPLY
	2021-06-03
页码	15
关键词	climate change composite index drought climatology drought evapotranspiration
ISSN号	1606-9749
DOI	10.2166/ws.2021.163
通讯作者	Faiz, Muhammad Abrar(faiz@igsnrr.ac.cn)
英文摘要	Drought is a natural phenomenon caused by extreme and persistent precipitation shortage. This shortfall causes impacts on hydrology, agriculture, and the economy of a country. Secondly, drought/dryness has certain unique characteristics (severity, duration) among the natural hazards which makes it difficult to classify the persistent and subjective network of impacts. Drought classification is important to manage drought, allowing both quantitative evaluation and potential risk assessment planning. The simpler approach of drought indices made it easier for various researchers and organizations to classify drought. Several drought indices have been proposed at the national and global level to characterize hydrological, meteorological and agricultural droughts. Until now, there has been no widely agreed drought index among researchers. Therefore, researchers are trying to modify and reconstruct a simple, complete, and robust drought index for effective use and planning of the management of water resources. Due to the complex terrestrial ecosystem, researchers used to integrate multiple drought indexes for evaluation and monitoring of regional drought conditions. The reviewed composite or aggregated indices revealed that the researchers are mainly focused on regional climatic and environmental conditions, and differences of theoretical backgrounds while integrating a drought index. There is a lack of performance evaluation of these indices because usually the comparative analysis between the integrated index and earlier developed composite indices is not performed. Secondly, the developer researchers did not mention limitations such as data, which is considered a paramount issue while applying these indices in other regions. Therefore, there is still comprehensive work needed for the simple integration of drought indexes for general applications.
资助项目	CAS President's International Fellowship Initiative (PIFI)[2020PE0048] ; CAS Talents Program ; CAS-CSIRO drought propagation collaboration project
WOS关键词	STANDARDIZED PRECIPITATION INDEX ; SOCIOECONOMIC DROUGHT ; AGRICULTURAL DROUGHT ; RIVER-BASIN ; METEOROLOGICAL DROUGHT ; INNER-MONGOLIA ; SEVERITY INDEX ; CLIMATE-CHANGE ; SOIL-MOISTURE ; CHINA
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	IWA PUBLISHING
WOS记录号	WOS:000659490800001
资助机构	CAS President's International Fellowship Initiative (PIFI) ; CAS Talents Program ; CAS-CSIRO drought propagation collaboration project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164144]
专题	中国科学院地理科学与资源研究所
通讯作者	Faiz, Muhammad Abrar
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.United Arab Emirates Univ, Dept Civil & Environm Engn, Al Ain, U Arab Emirates 3.United Arab Emirates Univ, Natl Water Ctr, Al Ain, U Arab Emirates 4.Khawaja Fareed Univ, Dept Civil Engn, Rahim Yar Khan, Pakistan 5.Khawaja Fareed Univ, Dept Agr Engn, Civil Engn Bldg, Rahim Yar Khan, Pakistan
推荐引用方式 GB/T 7714	Faiz, Muhammad Abrar,Zhang, Yongqiang,Ma, Ning,et al. Drought indices: aggregation is necessary or it is only the researcher's choice[J]. WATER SUPPLY,2021:15.
APA	Faiz, Muhammad Abrar,Zhang, Yongqiang,Ma, Ning,Baig, Faisal,Naz, Farah,&Niaz, Yasir.(2021).Drought indices: aggregation is necessary or it is only the researcher's choice.WATER SUPPLY,15.
MLA	Faiz, Muhammad Abrar,et al."Drought indices: aggregation is necessary or it is only the researcher's choice".WATER SUPPLY (2021):15.