干旱区生态环境知识资源中心(Arid): Temporal analysis of drought characteristics in the tropical semi-arid zone of Nigeria

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DOI	10.1016/j.sciaf.2021.e01016
	Temporal analysis of drought characteristics in the tropical semi-arid zone of Nigeria
	Adejuwon, Joseph Omoniyi; Dada, Emmanuel
通讯作者	Adejuwon, JO (corresponding author)，Fed Univ Agr, Dept Water Resources Management & Agrometeorol, Abeokuta, Nigeria.
来源期刊	SCIENTIFIC AFRICAN
ISSN	2468-2276
出版年	2021
卷号	14
英文摘要	Drought is a major environmental hazard affecting agriculture and other socio-economic activities globally but most prominent in the arid and semi-arid zones. This study examined drought characteristics in the semi-arid tropics of Nigeria from 1981 to 2012. Standardized Precipitation Index-12 series analysis, drought magnitude index, drought probability index, recurrence interval and descriptive statistics were employed for the study. The results showed a decline in drought frequency from 58.9% mild to 5.1% extreme, a variation of 0 to 28 times for individual drought category and 21 to 46 times for its total. The northeastern area (Pokistum and Maiduguri -53.8%) is the most notorious for extreme drought events. Pokistum and Yelwa contributed 47.25% of the entire extreme droughts magnitude in the zone. Drought intensity is from -0.01 to -4.49 on SPI scale with the highest at Nguru in June 2004. Drought duration is a mix of various categories with the lowest of one month in a few stations and highest of about seven years (80 months) at Kano from December 1981 to July 1988. The absolute probability and the recurrence interval ranged from 0 to 0.70 and 0 to 33.3 years respectively. The droughts demonstrated extensive monthly inconsistency exemplified by fluctuation. (C) 2021 The Authors. Published by Elsevier B.V. on behalf of African Institute of Mathematical Sciences / Next Einstein Initiative.
英文关键词	Drought frequency Drought duration Drought magnitude The probability of occurrence Recurrence interval Tropics
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000740944700003
WOS关键词	RIVER-BASIN ; CLIMATE-CHANGE ; RAINFALL ; VARIABILITY ; PART ; CIRCULATION ; CHALLENGES ; DYNAMICS ; SURFACE ; STATE
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376064
作者单位	[Adejuwon, Joseph Omoniyi; Dada, Emmanuel] Fed Univ Agr, Dept Water Resources Management & Agrometeorol, Abeokuta, Nigeria
推荐引用方式 GB/T 7714	Adejuwon, Joseph Omoniyi,Dada, Emmanuel. Temporal analysis of drought characteristics in the tropical semi-arid zone of Nigeria[J],2021,14.
APA	Adejuwon, Joseph Omoniyi,&Dada, Emmanuel.(2021).Temporal analysis of drought characteristics in the tropical semi-arid zone of Nigeria.SCIENTIFIC AFRICAN,14.
MLA	Adejuwon, Joseph Omoniyi,et al."Temporal analysis of drought characteristics in the tropical semi-arid zone of Nigeria".SCIENTIFIC AFRICAN 14(2021).