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Extreme dry and wet...
Extreme dry and wet spells face changes in their duration and timing
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- Breinl, Korbinian (författare)
- Vienna Univ Technol, Inst Hydraul Engn & Water Resources Management, Karlspl 13-222, A-1040 Vienna, Austria.;CNDS, Ctr Nat Hazards & Disaster Sci, Villavagen 16, S-75236 Uppsala, Sweden.
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- Di Baldassarre, Giuliano (författare)
- Uppsala universitet,Luft-, vatten- och landskapslära,CNDS, Ctr Nat Hazards & Disaster Sci, Villavagen 16, S-75236 Uppsala, Sweden
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- Mazzoleni, Maurizio (författare)
- Uppsala universitet,Luft-, vatten- och landskapslära,CNDS, Ctr Nat Hazards & Disaster Sci, Villavagen 16, S-75236 Uppsala, Sweden
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- Lun, David (författare)
- Vienna Univ Technol, Inst Hydraul Engn & Water Resources Management, Karlspl 13-222, A-1040 Vienna, Austria.
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- Vico, Giulia (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtproduktionsekologi,Department of Crop Production Ecology,Swedish Univ Agr Sci, Dept Crop Prod Ecol, Ulls Vag 16, S-75007 Uppsala, Sweden.
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Vienna Univ Technol, Inst Hydraul Engn & Water Resources Management, Karlspl 13-222, A-1040 Vienna, Austria;CNDS, Ctr Nat Hazards & Disaster Sci, Villavagen 16, S-75236 Uppsala, Sweden. Luft-, vatten- och landskapslära (creator_code:org_t)
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- 2020-07-06
- 2020
- Engelska.
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Ingår i: Environmental Research Letters. - : IOP Publishing. - 1748-9326. ; 15:7
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
Nyckelord
- extreme dry spells
- extreme wet spells
- change in duration
- change in timing
- climate change
- global analysis
- global trends
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