干旱区生态环境知识资源中心(Arid): A global drought-aridity index: The spatiotemporal standardized precipitation evapotranspiration index

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DOI	10.1016/j.ecolind.2023.110484
	A global drought-aridity index: The spatiotemporal standardized precipitation evapotranspiration index
	Yu, Hang; Wang, Long; Zhang, Jianlong; Chen, Yuanfang
通讯作者	Wang, L
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2023
卷号	153
英文摘要	Climate change has increased the risk of drought in both arid and non-arid regions of the globe. Therefore, in order to monitor and evaluate global drought and aridity, based on the principle of standardized precipitation evapotranspiration index (SPEI), this paper selected precipitation and potential evapotranspiration data and used a frequency calculation method to develop a multi-scale global drought aridity index (GDAI) that concurrently considers spatial and temporal variation characteristics: the spatiotemporal standardized precipitation evapo-transpiration index. The index was compared with the aridity index (AI) and SPEI. The results showed that the correlation coefficients between GDAI and AI were greater than 0.8 in most areas, and the relationship was closer and could reveal the global aridity and wetness zoning. In addition, the correlation between GDAI and SPEI was also better, which could capture the temporal change characteristics of drought. Moreover, this study also compared the grades of GDAI and SPEI with the actual drought grades in Yunnan from September 2009 to August 2010, and found that GDAI was better than SPEI, and GDAI was the most accurately evaluated at the 3 month time scale, with an accuracy rate of 86.11%. Therefore, this index is more helpful for the assessment and monitoring of global drought and aridity.
英文关键词	Drought Aridity Joint probability Global drought-aridity index
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001019624100001
WOS关键词	SEVERITY INDEX ; IMPACTS ; BASIN
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395942
推荐引用方式 GB/T 7714	Yu, Hang,Wang, Long,Zhang, Jianlong,et al. A global drought-aridity index: The spatiotemporal standardized precipitation evapotranspiration index[J],2023,153.
APA	Yu, Hang,Wang, Long,Zhang, Jianlong,&Chen, Yuanfang.(2023).A global drought-aridity index: The spatiotemporal standardized precipitation evapotranspiration index.ECOLOGICAL INDICATORS,153.
MLA	Yu, Hang,et al."A global drought-aridity index: The spatiotemporal standardized precipitation evapotranspiration index".ECOLOGICAL INDICATORS 153(2023).