Publication Abstracts

Zhou et al. 2021

Zhou, S., A.P. Williams, B.R. Lintner, A.M. Berg, Y. Zhang, T.F. Keenan, B.I. Cook, S. Hagemann, S.I. Seneviratne, and P. Gentine, 2021: Soil moisture-atmosphere feedbacks mitigate declining water availability in drylands. Nat. Clim. Change, 11, no. 1, 38-44, doi:10.1038/s41558-020-00945-z.

Global warming alters surface water availability (precipitation minus evapotranspiration, P-E) and hence freshwater resources. However, the influence of land-atmosphere feedbacks on future P-E changes and the underlying mechanisms remain unclear. Here we demonstrate that soil moisture (SM) strongly impacts future P-E changes, especially in drylands, by regulating evapotranspiration and atmospheric moisture inflow. Using modeling and empirical approaches, we find a consistent negative SM feedback on P-E, which may offset ∼60% of the decline in dryland P-E otherwise expected in the absence of SM feedbacks. The negative feedback is not caused by atmospheric thermodynamic responses to declining SM, but rather reduced SM, in addition to limiting evapotranspiration, regulates atmospheric circulation and vertical ascent to enhance moisture transport into drylands. This SM effect is a large source of uncertainty in projected dryland P-E changes, underscoring the need to better constrain future SM changes and improve representation of SM-atmosphere processes in models.

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BibTeX Citation

  author={Zhou, S. and Williams, A. P. and Lintner, B. R. and Berg, A. M. and Zhang, Y. and Keenan, T. F. and Cook, B. I. and Hagemann, S. and Seneviratne, S. I. and Gentine, P.},
  title={Soil moisture-atmosphere feedbacks mitigate declining water availability in drylands},
  journal={Nat. Clim. Change},

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RIS Citation

ID  - zh01400p
AU  - Zhou, S.
AU  - Williams, A. P.
AU  - Lintner, B. R.
AU  - Berg, A. M.
AU  - Zhang, Y.
AU  - Keenan, T. F.
AU  - Cook, B. I.
AU  - Hagemann, S.
AU  - Seneviratne, S. I.
AU  - Gentine, P.
PY  - 2021
TI  - Soil moisture-atmosphere feedbacks mitigate declining water availability in drylands
JA  - Nat. Clim. Change
VL  - 11
IS  - 1
SP  - 38
EP  - 44
DO  - 10.1038/s41558-020-00945-z
ER  -

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