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Land–atmospheric feedbacks during droughts and heatwaves: state of the science and current challenges

Miralles, Diego G. ; Gentine, Pierre ; Seneviratne, Sonia I. ; Teuling, Adriaan J.

Annals of the New York Academy of Sciences, 2019-01, Vol.1436 (1), p.19-35 [Periódico revisado por pares]

United States: Wiley Subscription Services, Inc

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  • Título:
    Land–atmospheric feedbacks during droughts and heatwaves: state of the science and current challenges
  • Autor: Miralles, Diego G. ; Gentine, Pierre ; Seneviratne, Sonia I. ; Teuling, Adriaan J.
  • Assuntos: Agriculture ; Anomalies ; Atmospheric boundary layer ; Atmospheric models ; Boundary layers ; Climate Change ; Climate models ; Climate Sciences ; Drinking water ; Drought ; Droughts ; Ecology ; Ecosystem ; Ecosystems ; Environmental changes ; Environmental Sciences ; Evaporation ; Food security ; heatwave ; Hot Temperature ; Humans ; Inflow ; land feedback ; land–atmospheric interactions ; Models, Theoretical ; Rainfall ; Water scarcity
  • É parte de: Annals of the New York Academy of Sciences, 2019-01, Vol.1436 (1), p.19-35
  • Descrição: Droughts and heatwaves cause agricultural loss, forest mortality, and drinking water scarcity, especially when they occur simultaneously as combined events. Their predicted increase in recurrence and intensity poses serious threats to future food security. Still today, the knowledge of how droughts and heatwaves start and evolve remains limited, and so does our understanding of how climate change may affect them. Droughts and heatwaves have been suggested to intensify and propagate via land–atmosphere feedbacks. However, a global capacity to observe these processes is still lacking, and climate and forecast models are immature when it comes to representing the influences of land on temperature and rainfall. Key open questions remain in our goal to uncover the real importance of these feedbacks: What is the impact of the extreme meteorological conditions on ecosystem evaporation? How do these anomalies regulate the atmospheric boundary layer state (event self‐intensification) and contribute to the inflow of heat and moisture to other regions (event self‐propagation)? Can this knowledge on the role of land feedbacks, when available, be exploited to develop geo‐engineering mitigation strategies that prevent these events from aggravating during their early stages? The goal of our perspective is not to present a convincing answer to these questions, but to assess the scientific progress to date, while highlighting new and innovative avenues to keep advancing our understanding in the future. Droughts and heatwaves cause agricultural loss, forest mortality and drinking water scarcity, especially when they occur simultaneously as combined events. Their predicted increase in recurrence and intensity poses serious threats to future food security. Still today, the knowledge of how droughts and heatwaves start and evolve remains limited, and so does our understanding of how climate change may affect them. Our goal is to revisit the role of land feedbacks on the evolution of these extreme events, and highlight new and innovative avenues to keep advancing our understanding how droughts and heatwaves develop and propagate.
  • Editor: United States: Wiley Subscription Services, Inc
  • Idioma: Inglês
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