干旱区生态环境知识资源中心(Arid): Temporal evolution and spatial variation of meteorological drought characteristics in Iran's diverse climates over the past half century

Arid

DOI	10.1007/s00704-024-04941-7
	Temporal evolution and spatial variation of meteorological drought characteristics in Iran's diverse climates over the past half century
	Ghaleni, Mehdi Mohammadi; Sharafi, Saeed; Hosseini-Moghari, Seyed-Mohammad; Helali, Jalil; Oskouei, Ebrahim Asadi
通讯作者	Ghaleni, MM
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
ISSN	0177-798X
EISSN	1434-4483
出版年	2024
英文摘要	This study investigates the spatiotemporal characteristics of meteorological drought over the past 50 years in Iran's four distinct climates: Hyper-arid, Arid, Semiarid, and Humid. Employing three drought indices (Standardized Precipitation Index, Reconnaissance Drought Index, and Standardized Precipitation Evapotranspiration Index) at multiple timescales (1-, 3-, 6-, 9-, and 12-months), the analysis utilizes data from 41 synoptic meteorological stations spanning the period from 1969 to 2019. Results reveal a temporal increase in the duration and intensity of drought events, particularly post the 1998-99 period. The longest extreme drought, lasting 40 months, occurred during Dec 1998-Mar 2002 and Jan 2018-Mar 2018. Spatial patterns indicate a uniform rise in drought intensity across timescales and indices, transitioning from humid and semiarid to arid and Hyper-arid regions. Average drought durations for SPI, SPEI, and RDI indices are 9, 12, and 9 months, respectively, while mean drought frequencies stand at 14%, 17%, and 13% for SPI, SPEI, and RDI indices. Notably, SPEI exhibits greater duration and frequency of drought events, especially in arid and Hyper-arid regions. The research underscores the pivotal role of climatic variables in delineating drought characteristics and emphasizes the significance of selecting appropriate drought indices across diverse climates.
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001194839800001
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405798
推荐引用方式 GB/T 7714	Ghaleni, Mehdi Mohammadi,Sharafi, Saeed,Hosseini-Moghari, Seyed-Mohammad,et al. Temporal evolution and spatial variation of meteorological drought characteristics in Iran's diverse climates over the past half century[J],2024.
APA	Ghaleni, Mehdi Mohammadi,Sharafi, Saeed,Hosseini-Moghari, Seyed-Mohammad,Helali, Jalil,&Oskouei, Ebrahim Asadi.(2024).Temporal evolution and spatial variation of meteorological drought characteristics in Iran's diverse climates over the past half century.THEORETICAL AND APPLIED CLIMATOLOGY.
MLA	Ghaleni, Mehdi Mohammadi,et al."Temporal evolution and spatial variation of meteorological drought characteristics in Iran's diverse climates over the past half century".THEORETICAL AND APPLIED CLIMATOLOGY (2024).