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Enhanced risk of concurrent regional droughts with increased ENSO variability and warming
Spatially compounding extremes pose substantial threats to globally interconnected socio-economic systems. Here we use multiple large ensemble simulations of the high-emissions scenario to show increased risk of compound droughts during the boreal summer over ten global regions. Relative to the late...
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Published in: | Nature climate change 2022-02, Vol.12 (2), p.163-170 |
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description | Spatially compounding extremes pose substantial threats to globally interconnected socio-economic systems. Here we use multiple large ensemble simulations of the high-emissions scenario to show increased risk of compound droughts during the boreal summer over ten global regions. Relative to the late twentieth century, the probability of compound droughts increases by ~40% and ~60% by the middle and late twenty-first century, respectively, with a disproportionate increase in risk across North America and the Amazon. These changes contribute to an approximately ninefold increase in agricultural area and population exposure to severe compound droughts with continued fossil-fuel dependence. ENSO is the predominant large-scale driver of compound droughts with 68% of historical events occurring during El Niño or La Niña conditions. With ENSO teleconnections remaining largely stationary in the future, a ~22% increase in frequency of ENSO events combined with projected warming drives the elevated risk of compound droughts.
The co-occurrence of drought across different regions will have far-reaching effects on global agriculture and food supply. Model projections show an increased likelihood of these compound droughts under a high-emissions scenario, with a ninefold increase of farm land and population exposure. |
doi_str_mv | 10.1038/s41558-021-01276-3 |
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The co-occurrence of drought across different regions will have far-reaching effects on global agriculture and food supply. Model projections show an increased likelihood of these compound droughts under a high-emissions scenario, with a ninefold increase of farm land and population exposure.</description><identifier>ISSN: 1758-678X</identifier><identifier>EISSN: 1758-6798</identifier><identifier>DOI: 10.1038/s41558-021-01276-3</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>20th century ; 21st century ; 704/106/242 ; 704/106/35/823 ; 704/106/694 ; 704/172/4081 ; 706/2805 ; Agricultural land ; Agricultural production ; Agriculture ; atmospheric dynamics ; Climate Change ; Climate Change/Climate Change Impacts ; Drought ; Earth and Environmental Science ; Economic systems ; El Nino ; El Nino phenomena ; El Nino-Southern Oscillation event ; Emissions ; Environment ; environmental impact ; Environmental Law/Policy/Ecojustice ; ENVIRONMENTAL SCIENCES ; Farms ; Food supply ; Fossil fuels ; Fossils ; hydrology ; La Nina ; Precipitation ; Probability ; Probability theory ; Regions ; Risk ; Simulation ; Socioeconomic aspects ; Southern Oscillation ; water resources</subject><ispartof>Nature climate change, 2022-02, Vol.12 (2), p.163-170</ispartof><rights>The Author(s), under exclusive licence to Springer Nature Limited 2022. corrected publication 2022</rights><rights>The Author(s), under exclusive licence to Springer Nature Limited 2022. corrected publication 2022.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c390t-abef0f3fde83bf4b9ed8cac2cefe6b3a439c238f186a3781d582771638a19f053</citedby><cites>FETCH-LOGICAL-c390t-abef0f3fde83bf4b9ed8cac2cefe6b3a439c238f186a3781d582771638a19f053</cites><orcidid>0000-0003-3755-9943 ; 0000-0003-4106-3027 ; 0000-0001-5323-6162 ; 0000-0002-3046-6296 ; 0000000337559943 ; 0000000341063027 ; 0000000153236162 ; 0000000230466296</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1881165$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Singh, Jitendra</creatorcontrib><creatorcontrib>Ashfaq, Moetasim</creatorcontrib><creatorcontrib>Skinner, Christopher B.</creatorcontrib><creatorcontrib>Anderson, Weston B.</creatorcontrib><creatorcontrib>Mishra, Vimal</creatorcontrib><creatorcontrib>Singh, Deepti</creatorcontrib><creatorcontrib>Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)</creatorcontrib><title>Enhanced risk of concurrent regional droughts with increased ENSO variability and warming</title><title>Nature climate change</title><addtitle>Nat. Clim. Chang</addtitle><description>Spatially compounding extremes pose substantial threats to globally interconnected socio-economic systems. Here we use multiple large ensemble simulations of the high-emissions scenario to show increased risk of compound droughts during the boreal summer over ten global regions. Relative to the late twentieth century, the probability of compound droughts increases by ~40% and ~60% by the middle and late twenty-first century, respectively, with a disproportionate increase in risk across North America and the Amazon. These changes contribute to an approximately ninefold increase in agricultural area and population exposure to severe compound droughts with continued fossil-fuel dependence. ENSO is the predominant large-scale driver of compound droughts with 68% of historical events occurring during El Niño or La Niña conditions. With ENSO teleconnections remaining largely stationary in the future, a ~22% increase in frequency of ENSO events combined with projected warming drives the elevated risk of compound droughts.
The co-occurrence of drought across different regions will have far-reaching effects on global agriculture and food supply. 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Clim. Chang</stitle><date>2022-02-01</date><risdate>2022</risdate><volume>12</volume><issue>2</issue><spage>163</spage><epage>170</epage><pages>163-170</pages><issn>1758-678X</issn><eissn>1758-6798</eissn><abstract>Spatially compounding extremes pose substantial threats to globally interconnected socio-economic systems. Here we use multiple large ensemble simulations of the high-emissions scenario to show increased risk of compound droughts during the boreal summer over ten global regions. Relative to the late twentieth century, the probability of compound droughts increases by ~40% and ~60% by the middle and late twenty-first century, respectively, with a disproportionate increase in risk across North America and the Amazon. These changes contribute to an approximately ninefold increase in agricultural area and population exposure to severe compound droughts with continued fossil-fuel dependence. ENSO is the predominant large-scale driver of compound droughts with 68% of historical events occurring during El Niño or La Niña conditions. With ENSO teleconnections remaining largely stationary in the future, a ~22% increase in frequency of ENSO events combined with projected warming drives the elevated risk of compound droughts.
The co-occurrence of drought across different regions will have far-reaching effects on global agriculture and food supply. Model projections show an increased likelihood of these compound droughts under a high-emissions scenario, with a ninefold increase of farm land and population exposure.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><doi>10.1038/s41558-021-01276-3</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0003-3755-9943</orcidid><orcidid>https://orcid.org/0000-0003-4106-3027</orcidid><orcidid>https://orcid.org/0000-0001-5323-6162</orcidid><orcidid>https://orcid.org/0000-0002-3046-6296</orcidid><orcidid>https://orcid.org/0000000337559943</orcidid><orcidid>https://orcid.org/0000000341063027</orcidid><orcidid>https://orcid.org/0000000153236162</orcidid><orcidid>https://orcid.org/0000000230466296</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | 20th century 21st century 704/106/242 704/106/35/823 704/106/694 704/172/4081 706/2805 Agricultural land Agricultural production Agriculture atmospheric dynamics Climate Change Climate Change/Climate Change Impacts Drought Earth and Environmental Science Economic systems El Nino El Nino phenomena El Nino-Southern Oscillation event Emissions Environment environmental impact Environmental Law/Policy/Ecojustice ENVIRONMENTAL SCIENCES Farms Food supply Fossil fuels Fossils hydrology La Nina Precipitation Probability Probability theory Regions Risk Simulation Socioeconomic aspects Southern Oscillation water resources |
title | Enhanced risk of concurrent regional droughts with increased ENSO variability and warming |
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