气候变化领域集成服务门户(CCPortal): Potential impacts of global warming levels 1.5 °C and above on climate extremes in Botswana

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DOI	10.1007/s10584-019-02446-1
	Potential impacts of global warming levels 1.5 °C and above on climate extremes in Botswana
	Akinyemi F.O.; Abiodun B.J.
发表日期	2019
ISSN	0165-0009
起始页码	387
结束页码	400
卷号	154 期号:2020-03-04
英文摘要	Limiting global warming to 1.5 °C and 2.0 °C above pre-industrial levels has been proposed as a way to reduce the impacts of climate change globally. Formulating reliable policies to adapt to these warming levels requires an understanding of the impacts at regional and national scales. The present study examines the potential impacts of the different global warming levels (1.5 °C and above) on climate extremes over Botswana, one of the most vulnerable countries to extreme climate events. Using a series of regional climate model simulations from the Coordinated Regional Climate Downscaling Experiment (CORDEX), we investigate the impacts of the warming on characteristics of the rainy season (onset, cessation, length, and number of wet days), extreme precipitation, and droughts. The simulations project a short length of the rainy season with a reduced number of wet days over Botswana at all the warming levels. They also indicate more frequent and intensified extreme precipitation, particularly in north-west Botswana. However, the additional rain water from the extreme rainfall may not offset the deficit in rainfall amount induced by the shorter rainy season with fewer wet days. Drought intensity and frequency are also projected to increase, but the magnitude of changes increases with higher warming levels. The policy implications of projected changes are discussed in relation to the possible impacts on society using agriculture and water availability as examples. © 2019, Springer Nature B.V.
语种	英语
scopus关键词	Drought; Global warming; Public policy; Rain; Drought intensities; Extreme precipitation; Policy implications; Potential impacts; Pre-industrial levels; Regional climate; Regional climate model simulation; Water availability; Climate models; adaptive management; climate change; climate modeling; environmental policy; global warming; precipitation (climatology); rainfall; regional climate; temperature effect; water availability; Botswana
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147462
作者单位	Earth and Environmental Science Department, Botswana International University of Science and Technology, Palapye, Botswana; Centre for Remote Sensing of Land Surfaces, University of Bonn, Bonn, Germany; Climate System Analysis Group, Department of Environmental and Geographical Science, University of Cape Town, Cape Town, South Africa
推荐引用方式 GB/T 7714	Akinyemi F.O.,Abiodun B.J.. Potential impacts of global warming levels 1.5 °C and above on climate extremes in Botswana[J],2019,154(2020-03-04).
APA	Akinyemi F.O.,&Abiodun B.J..(2019).Potential impacts of global warming levels 1.5 °C and above on climate extremes in Botswana.Climatic Change,154(2020-03-04).
MLA	Akinyemi F.O.,et al."Potential impacts of global warming levels 1.5 °C and above on climate extremes in Botswana".Climatic Change 154.2020-03-04(2019).