干旱区生态环境知识资源中心(Arid): Minimum Rainfall Inter-Event Time to Separate Rainfall Events in a Low Latitude Semi-Arid Environment

Arid

DOI	10.3390/su14031721
	Minimum Rainfall Inter-Event Time to Separate Rainfall Events in a Low Latitude Semi-Arid Environment
	Brasil, Jose Bandeira; Guerreiro, Maria Simas; Andrade, Eunice Maia de; de Queiroz Palacio, Helba Araujo; Medeiros, Pedro Henrique Augusto; Ribeiro Filho, Jacques Carvalho
通讯作者	Guerreiro, MS (corresponding author)，Univ Fernando Pessoa, FP ENAS, P-4249004 Porto, Portugal.
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2022
卷号	14 期号:3
英文摘要	Water scarcity in dry tropical regions is expected to intensify due to climate change. Characterization of rainfall events is needed for a better assessment of the associated hydrological processes, and the proposition of adaptation strategies. There is still no consensus on the most appropriate method to separate rainfall events from a continuous database, although the minimum inter-event time (MIET) is a commonly used criterion. Semi-arid regions of low latitudes hold a distinct rainfall pattern compared to their equivalent at higher latitudes; these seasonally dry tropical forests experience strong spatial-temporal variability with intense short-duration rainfall events, which, in association with high energy surplus and potential evaporation, leads to an atmospheric water deficit. In this study, we identified the most adequate MIET based on rainfall data continuously measured at 5-min intervals over the last decade (2009-2020) in the semi-arid northeast of Brazil. The rainfall events were grouped according to different MIETs: 15 min, 1 h, 2 h, 3 h, 6 h, 12 h, and 24 h to determine rainfall depth, duration and intensity at intervals of 5, 30, and 60 min, time between events, and respective temporal distribution, with and without single tip events. Including single tip events in the dataset affected the number of rainfall events and respective characteristics up to a MIET of 3 h. A MIET of 6 h is the most appropriate to characterize the rainfall distribution in this tropical semi-arid region. Three classes were defined based on rainfall depth, duration, and intensity: I-small events (77% below 40 mm and 32 mm/h), II-high intensity events (3% between 36 and 76 mm/h), III-longer events of higher depth (20%). This study is useful for understanding how the MIET relates to other ecohydrological processes and provides more precise information on the rainfall characteristics at the event scale.
英文关键词	rainfall characteristics rain events separation tropical dry regions hydrological processes
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000759990500001
WOS关键词	PROBABILITY-DISTRIBUTIONS ; ROOT-ZONE ; INTERCEPTION ; WATER ; PRECIPITATION ; SOIL ; IDENTIFICATION ; PERFORMANCE ; DEFINITION ; BEHAVIOR
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376344
作者单位	[Brasil, Jose Bandeira; Ribeiro Filho, Jacques Carvalho] Fed Univ Ceara UFC, Dept Agr Engn, BR-60020181 Fortaleza, Ceara, Brazil; [Guerreiro, Maria Simas] Univ Fernando Pessoa, FP ENAS, P-4249004 Porto, Portugal; [Andrade, Eunice Maia de] Fed Univ Semiarid Reg, Dept Soil & Water Conservat, BR-59625900 Mossoro, Brazil; [de Queiroz Palacio, Helba Araujo; Medeiros, Pedro Henrique Augusto] Fed Inst Educ Sci & Technol Ceara, BR-63500000 Iguatu, Brazil
推荐引用方式 GB/T 7714	Brasil, Jose Bandeira,Guerreiro, Maria Simas,Andrade, Eunice Maia de,et al. Minimum Rainfall Inter-Event Time to Separate Rainfall Events in a Low Latitude Semi-Arid Environment[J],2022,14(3).
APA	Brasil, Jose Bandeira,Guerreiro, Maria Simas,Andrade, Eunice Maia de,de Queiroz Palacio, Helba Araujo,Medeiros, Pedro Henrique Augusto,&Ribeiro Filho, Jacques Carvalho.(2022).Minimum Rainfall Inter-Event Time to Separate Rainfall Events in a Low Latitude Semi-Arid Environment.SUSTAINABILITY,14(3).
MLA	Brasil, Jose Bandeira,et al."Minimum Rainfall Inter-Event Time to Separate Rainfall Events in a Low Latitude Semi-Arid Environment".SUSTAINABILITY 14.3(2022).