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Dryland self-expansion enabled by land-atmosphere feedbacks.

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Title: Dryland self-expansion enabled by land-atmosphere feedbacks.
Authors: Koppa, Akash, Keune, Jessica, Schumacher, Dominik L., Michaelides, Katerina, Singer, Michael, Seneviratne, Sonia I., Miralles, Diego G.
Source: Science (pre-March 2025). 8/30/2024, Vol. 385 Issue 6712, p967-972. 6p. 3 Diagrams, 1 Map.
Subjects: Climate change mitigation, Environmental degradation, Water shortages, Global warming, Air flow
Abstract: Dryland expansion causes widespread water scarcity and biodiversity loss. Although the drying influence of global warming is well established, the role of existing drylands in their own expansion is relatively unknown. In this work, by tracking the air flowing over drylands, we show that the warming and drying of that air contributes to dryland expansion in the downwind direction. As they dry, drylands contribute less moisture and more heat to downwind humid regions, reducing precipitation and increasing atmospheric water demand, which ultimately causes their aridification. In ~40% of the land area that recently transitioned from a humid region into a dryland, self-expansion accounted for ’50% of the observed aridification. Our results corroborate the urgent need for climate change mitigation measures in drylands to decelerate their own expansion. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Dryland self-expansion enabled by land-atmosphere feedbacks.
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  Data: <searchLink fieldCode="AR" term="%22Koppa%2C+Akash%22">Koppa, Akash</searchLink><br /><searchLink fieldCode="AR" term="%22Keune%2C+Jessica%22">Keune, Jessica</searchLink><br /><searchLink fieldCode="AR" term="%22Schumacher%2C+Dominik+L%2E%22">Schumacher, Dominik L.</searchLink><br /><searchLink fieldCode="AR" term="%22Michaelides%2C+Katerina%22">Michaelides, Katerina</searchLink><br /><searchLink fieldCode="AR" term="%22Singer%2C+Michael%22">Singer, Michael</searchLink><br /><searchLink fieldCode="AR" term="%22Seneviratne%2C+Sonia+I%2E%22">Seneviratne, Sonia I.</searchLink><br /><searchLink fieldCode="AR" term="%22Miralles%2C+Diego+G%2E%22">Miralles, Diego G.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 8/30/2024, Vol. 385 Issue 6712, p967-972. 6p. 3 Diagrams, 1 Map.
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  Data: <searchLink fieldCode="DE" term="%22Climate+change+mitigation%22">Climate change mitigation</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+degradation%22">Environmental degradation</searchLink><br /><searchLink fieldCode="DE" term="%22Water+shortages%22">Water shortages</searchLink><br /><searchLink fieldCode="DE" term="%22Global+warming%22">Global warming</searchLink><br /><searchLink fieldCode="DE" term="%22Air+flow%22">Air flow</searchLink>
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  Label: Abstract
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  Data: Dryland expansion causes widespread water scarcity and biodiversity loss. Although the drying influence of global warming is well established, the role of existing drylands in their own expansion is relatively unknown. In this work, by tracking the air flowing over drylands, we show that the warming and drying of that air contributes to dryland expansion in the downwind direction. As they dry, drylands contribute less moisture and more heat to downwind humid regions, reducing precipitation and increasing atmospheric water demand, which ultimately causes their aridification. In ~40% of the land area that recently transitioned from a humid region into a dryland, self-expansion accounted for ’50% of the observed aridification. Our results corroborate the urgent need for climate change mitigation measures in drylands to decelerate their own expansion. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=179316093
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        Value: 10.1126/science.adn6833
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        Text: English
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      – SubjectFull: Water shortages
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      – SubjectFull: Air flow
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              M: 08
              Text: 8/30/2024
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              Y: 2024
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