What question did this study set out to answer?

To investigate how land–atmosphere feedbacks drive and amplify concurrent extremes of soil drought and atmospheric aridity across global regions.

September 3, 2019Proceedings of the National Academy of SciencesOpen Access

Land–atmosphere feedbacks exacerbate concurrent soil drought and atmospheric aridity

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To investigate how land–atmosphere feedbacks drive and amplify concurrent extremes of soil drought and atmospheric aridity across global regions.
Empirically assessed the global coupling relationship between soil moisture and vapor pressure deficit.
Analyzed climate simulations from the Global Land Atmosphere Coupling Experiment (GLACE)-CMIP5 and standard CMIP5 multimodel experiments to evaluate feedback dynamics and project 21st-century compound aridity trends.
Observed strong global negative coupling between soil moisture and vapor pressure deficit, establishing high baseline co-occurrence of soil drought and atmospheric aridity.
Demonstrated that soil drought feedbacks to the atmosphere primarily drive atmospheric aridity extremes, while soil moisture–precipitation feedbacks exacerbate regional rainfall and soil moisture deficits.
CMIP5 projections indicate that the frequency and intensity of land–atmosphere feedback-driven compound droughts will substantially increase during the 21st century beyond expectations from mean climate changes alone.

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Implication

Climate modeling reveals land-atmosphere feedbacks exacerbate concurrent soil drought and atmospheric aridity globally, indicating heightened climate risk for vegetation and carbon uptake.

Cite This Study

Zhou et al. (2019) studied this question.

synapsesocial.com/papers/69d91d7e8988aeabbe6842bd https://doi.org/10.1073/pnas.1904955116

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Implication

Climate modeling reveals land-atmosphere feedbacks exacerbate concurrent soil drought and atmospheric aridity globally, indicating heightened climate risk for vegetation and carbon uptake.

Land–atmosphere feedbacks exacerbate concurrent soil drought and atmospheric aridity

Key Points

Discussion

Implication

Cite This Study

Land–atmosphere feedbacks exacerbate concurrent soil drought and atmospheric aridity

Key Points

Discussion

Implication

Cite This Study

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