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Impact of soil moisture-climate feedbacks on CMIP5 projections: First results from the GLACE-CMIP5 experiment

Seneviratne, Sonia I. ; Wilhelm, Micah ; Stanelle, Tanja ; van den Hurk, Bart ; Hagemann, Stefan ; Berg, Alexis ; Cheruy, Frederique ; Higgins, Matthew E. ; Meier, Arndt LU and Brovkin, Victor , et al. (2013) In Geophysical Research Letters 40(19). p.5212-5217
Abstract
The Global Land-Atmosphere Climate Experiment-Coupled Model Intercomparison Project phase 5 (GLACE-CMIP5) is a multimodel experiment investigating the impact of soil moisture-climate feedbacks in CMIP5 projections. We present here first GLACE-CMIP5 results based on five Earth System Models, focusing on impacts of projected changes in regional soil moisture dryness (mostly increases) on late 21st century climate. Projected soil moisture changes substantially impact climate in several regions in both boreal and austral summer. Strong and consistent effects are found on temperature, especially for extremes (about 1-1.5K for mean temperature and 2-2.5K for extreme daytime temperature). In the Northern Hemisphere, effects on mean and heavy... (More)
The Global Land-Atmosphere Climate Experiment-Coupled Model Intercomparison Project phase 5 (GLACE-CMIP5) is a multimodel experiment investigating the impact of soil moisture-climate feedbacks in CMIP5 projections. We present here first GLACE-CMIP5 results based on five Earth System Models, focusing on impacts of projected changes in regional soil moisture dryness (mostly increases) on late 21st century climate. Projected soil moisture changes substantially impact climate in several regions in both boreal and austral summer. Strong and consistent effects are found on temperature, especially for extremes (about 1-1.5K for mean temperature and 2-2.5K for extreme daytime temperature). In the Northern Hemisphere, effects on mean and heavy precipitation are also found in most models, but the results are less consistent than for temperature. A direct scaling between soil moisture-induced changes in evaporative cooling and resulting changes in temperature mean and extremes is found in the simulations. In the Mediterranean region, the projected soil moisture changes affect about 25% of the projected changes in extreme temperature. (Less)
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@article{fd3bc2a5-be90-4c65-8455-e32d84a3929e,
  abstract     = {The Global Land-Atmosphere Climate Experiment-Coupled Model Intercomparison Project phase 5 (GLACE-CMIP5) is a multimodel experiment investigating the impact of soil moisture-climate feedbacks in CMIP5 projections. We present here first GLACE-CMIP5 results based on five Earth System Models, focusing on impacts of projected changes in regional soil moisture dryness (mostly increases) on late 21st century climate. Projected soil moisture changes substantially impact climate in several regions in both boreal and austral summer. Strong and consistent effects are found on temperature, especially for extremes (about 1-1.5K for mean temperature and 2-2.5K for extreme daytime temperature). In the Northern Hemisphere, effects on mean and heavy precipitation are also found in most models, but the results are less consistent than for temperature. A direct scaling between soil moisture-induced changes in evaporative cooling and resulting changes in temperature mean and extremes is found in the simulations. In the Mediterranean region, the projected soil moisture changes affect about 25% of the projected changes in extreme temperature.},
  author       = {Seneviratne, Sonia I. and Wilhelm, Micah and Stanelle, Tanja and van den Hurk, Bart and Hagemann, Stefan and Berg, Alexis and Cheruy, Frederique and Higgins, Matthew E. and Meier, Arndt and Brovkin, Victor and Claussen, Martin and Ducharne, Agnes and Dufresne, Jean-Louis and Findell, Kirsten L. and Ghattas, Josefine and Lawrence, David M. and Malyshev, Sergey and Rummukainen, Markku and Smith, Benjamin},
  issn         = {1944-8007},
  language     = {eng},
  number       = {19},
  pages        = {5212--5217},
  publisher    = {American Geophysical Union},
  series       = {Geophysical Research Letters},
  title        = {Impact of soil moisture-climate feedbacks on CMIP5 projections: First results from the GLACE-CMIP5 experiment},
  url          = {http://dx.doi.org/10.1002/grl.50956},
  doi          = {10.1002/grl.50956},
  volume       = {40},
  year         = {2013},
}