Abstract
This paper analyzes the soil–atmosphere feedbacks and uncertainties under current (1960–1990) and plausible future climate conditions (2070–2100, using the A2 greenhouse gases emission scenario). For this purpose, two vegetation descriptions differing only in the grassland and grass-with-trees proportion in some parts of the domain have been created. The combination of these two different climate scenarios and two vegetation descriptions defines four different 30-year experiments, which have been completed using a regional climate model. The domain is centered around the Mediterranean basin and covers most of Europe. The study focuses on the summer season when there are major differences between the two vegetation descriptions and when the impact of land–surface processes on precipitation is largest. Present climate experiments show large evapotranspiration differences over areas where vegetation changes have taken place. Precipitation increases (up to 3 mm day−1 in some regions) follow evapotranspiration increases, although with a more complex spatial structure. These results indicate a high sensitivity at regional scales of summer precipitation processes to vegetation changes. Future climate simulations show very similar changes to those observed in the current climate experiments. This indicates that the impacts of climate change are relatively independent to the land-cover descriptions used in this study.
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Acknowledgments
E. Sánchez has been funded by PRUDENCE European project (Prediction of Regional scenarios and Uncertainties for Defining EuropeaN Climate change risks and effects, EVK2-CT-2001-00132). We thank the useful comments of the anonymous reviewers, which have substantially improved the quality of the paper.
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Sánchez, E., Gaertner, M.A., Gallardo, C. et al. Impacts of a change in vegetation description on simulated European summer present-day and future climates. Clim Dyn 29, 319–332 (2007). https://doi.org/10.1007/s00382-007-0240-2
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DOI: https://doi.org/10.1007/s00382-007-0240-2