气候变化领域集成服务门户(CCPortal): Analysis of spatio-temporal precipitation and temperature variability and trend over Sudd-Wetland, Republic of South Sudan

CCPortal

DOI	10.1016/j.cliser.2024.100451
	Analysis of spatio-temporal precipitation and temperature variability and trend over Sudd-Wetland, Republic of South Sudan
	Zeleke, Tadesse Terefe; Lukwasa, Andu Zakaria Wani; Beketie, Kassahun Ture; Ayal, Desalegn Yayeh
发表日期	2024
ISSN	2405-8807
起始页码	34
卷号	34
英文摘要	The Sudd Wetland, which supports millions of pastoralists and farmers, as well as the internationally renowned Ramsar Wetland, are under pressure from population growth and climate change extremes such as flooding and drought. Using the Climate Hazards Group Infrareds Precipitation with Station (CHIRPS) and Climate Research Unit (CRU-TS4.06) datasets, this study investigates the spatiotemporal trend and variability of precipitation and temperature. As a result, descriptive statistics were used to describe the spatiotemporal behavior of precipitation and temperature. The Rotated Empirical Orthogonal Function (REOF) was used to detect the spatiotemporal variability of precipitation. The Pearson correlation method was used to investigate the relationship between Sea Surface Temperature (SST) and precipitation. The results revealed that Sudd-wetland receives 910 mm mean spatial annual precipitation and experienced 36 C-degrees mean annual temperature with high spatio-temporal variations. It receives the highest precipitation in summer season followed by autumn and spring. The precipitation amount decreases towards the north in all seasons. In both the summer and winter seasons, observed rainfall variability corresponds substantially to ENSO variability, whereas the spring and autumn seasons are more connected with Atlantic and Indian Ocean Sea surface temperature gradients. The Sudd wetland has been affected by prolonged drought and frequent flood events alternatively. The prolonged drought linking with the shrinking of the wetland are potential threats to the farmers and pastoralists to adapt the changing climate. Hence, it is imperative to systematically analyze the wetland ecosystem from different dimensions and adjust the livelihood settings of the people in to less climate sensitive activities. Therefore, we suggest in depth drought and flood risk evaluation and implementation of realistic adaptation strategy to sustain the ecological and economic benefit of the wetland.
英文关键词	Precipitation; Variability; Drought; SSTs; Trend; Spatio-temporal; Sudd-wetland; REOF
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001184973800001
来源期刊	CLIMATE SERVICES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290271
作者单位	Addis Ababa University; Addis Ababa University
推荐引用方式 GB/T 7714	Zeleke, Tadesse Terefe,Lukwasa, Andu Zakaria Wani,Beketie, Kassahun Ture,et al. Analysis of spatio-temporal precipitation and temperature variability and trend over Sudd-Wetland, Republic of South Sudan[J],2024,34.
APA	Zeleke, Tadesse Terefe,Lukwasa, Andu Zakaria Wani,Beketie, Kassahun Ture,&Ayal, Desalegn Yayeh.(2024).Analysis of spatio-temporal precipitation and temperature variability and trend over Sudd-Wetland, Republic of South Sudan.CLIMATE SERVICES,34.
MLA	Zeleke, Tadesse Terefe,et al."Analysis of spatio-temporal precipitation and temperature variability and trend over Sudd-Wetland, Republic of South Sudan".CLIMATE SERVICES 34(2024).