气候变化领域集成服务门户(CCPortal): Extreme dry and wet spells face changes in their duration and timing

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DOI	10.1088/1748-9326/ab7d05
	Extreme dry and wet spells face changes in their duration and timing
	Breinl K.; Di Baldassarre G.; Mazzoleni M.; Lun D.; Vico G.
发表日期	2020
ISSN	17489318
卷号	15 期号:7
英文摘要	Dry spells are sequences of days without precipitation. They can have negative implications for societies, including water security and agriculture. For example, changes in their duration and within-year timing can pose a threat to food production and wildfire risk. Conversely, wet spells are sequences of days with precipitation above a certain threshold, and changes in their duration and within-year timing can impact agriculture, flooding or the prevalence of water-related vector-borne diseases. Here we assess changes in the duration and within-year timing of extreme dry and wet spells over 60 years (1958-2017) using a consistent global land surface precipitation dataset of 5093 rain gauge locations. The dataset allowed for detailed spatial analyses of the United States, Europe and Australia. While many locations exhibit statistically significant changes in the duration of extreme dry and wet spells, the changes in the within-year timing are less often significant. Our results show consistencies with observations and projections from state-of-the-art climate and water resources research. In addition, we provide new insights regarding trends in the timing of extreme dry and wet spells, an aspect being equally important for possible future implications of extremes in a changing climate, which has not yet received the same level of attention and is characterized by larger uncertainty. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	change in duration; change in timing; climate change; extreme dry spells; extreme wet spells; global analysis; global trends
语种	英语
scopus关键词	Agricultural robots; Agriculture; Rain gages; Timing circuits; Water resources; Changing climate; Dry and wet spells; Food production; Global land surface; Possible futures; Spatial analysis; State of the art; Vector-borne disease; Rain; climate effect; drought stress; dry season; extreme event; flooding; food production; raingauge; seasonality; trend analysis; wet season; wildfire; Australia; Europe; United States
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153925
作者单位	Institute of Hydraulic Engineering and Water Resources Management, Vienna University of Technology, Karlsplatz 13/222, Wien, 1040, Austria; Centre of Natural Hazards and Disaster Science, CNDS, Villavägen 16, Uppsala, 75236, Sweden; Department of Earth Sciences, Uppsala University, Villavägen 16, Uppsala, 75236, Sweden; Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Ulls väg 16, Uppsala, 75007, Sweden
推荐引用方式 GB/T 7714	Breinl K.,Di Baldassarre G.,Mazzoleni M.,et al. Extreme dry and wet spells face changes in their duration and timing[J],2020,15(7).
APA	Breinl K.,Di Baldassarre G.,Mazzoleni M.,Lun D.,&Vico G..(2020).Extreme dry and wet spells face changes in their duration and timing.Environmental Research Letters,15(7).
MLA	Breinl K.,et al."Extreme dry and wet spells face changes in their duration and timing".Environmental Research Letters 15.7(2020).