EGU21-2211, updated on 18 May 2021
https://doi.org/10.5194/egusphere-egu21-2211
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Impact of aerosols on the future Euro-Mediterranean climate: results from the CORDEX FPS-Aerosol

Pierre Nabat1, Samuel Somot1, Lola Corre2, Eleni Katragkou3, Shuping Li4,8, Marc Mallet1, Erik van Meijgaard5, Vasileios Pavlidis3, Joni-Pekka Pietikäinen6, Silje Soerland4,9, and Fabien Solmon7
Pierre Nabat et al.
  • 1CNRM, Université de Toulouse, Météo-France, CNRS, Toulouse, France (pierre.nabat@meteo.fr)
  • 2Météo-France, Toulouse, France
  • 3Aristotle University of Thessaloniki, Thessaloniki, Greece
  • 4Institute for Atmospheric and Climate Science, ETH Zurich, Zürich, Switzerland
  • 5Royal Netherlands Meteorological Institute (KNMI), De Bilt, the Netherlands
  • 6Climate Service Center Germany (GERICS), Helmholtz-Zentrum Geesthacht, Hamburg, Germany
  • 7Laboratoire d’Aérologie, CNRS, Toulouse, France
  • 8College of Hydraulic science and engineering, Yangzhou University, Yangzhou, China
  • 9NORCE Norwegian Research Centre, Bergen, Norway

The Euro-Mediterranean region is subject to numerous and various aerosol loads, which interact with radiation, clouds and atmospheric dynamics, with ensuing impact on regional climate. However up to now, aerosol variations are hardly taken into account in most regional climate simulations, although anthropogenic emissions have been dramatically reduced in Europe since the 1980s. Moreover, inconsistencies between regional climate models (RCMs) and their driving global model (GCM) have recently been identified in terms of future radiation and temperature evolution, which could be related to the differences in aerosol forcing. 
The present study aims at assessing the role of aerosols in the future evolution of the Euro-Mediterranean climate, using a specific multi-model protocol carried out in the Flagship Pilot Study "Aerosol" of the CORDEX program. This protocol relies on three simulations for each RCM: a historical run (1971-2000) and two future RCP8.5 simulations (2021-2050), a first one with evolving aerosols, and a second one with the same aerosols as in the historical period. Six modeling groups have taken part in this protocol, providing nine triplets of simulations. The analysis of these simulations will be presented here. First results show that the future evolution of aerosols has a significant impact on the evolution of surface radiation and surface temperature. In addition RCM runs taking into account the evolution of aerosols are simulating climate change signal closer to the one of their driving GCM than those with constant aerosols.

How to cite: Nabat, P., Somot, S., Corre, L., Katragkou, E., Li, S., Mallet, M., van Meijgaard, E., Pavlidis, V., Pietikäinen, J.-P., Soerland, S., and Solmon, F.: Impact of aerosols on the future Euro-Mediterranean climate: results from the CORDEX FPS-Aerosol, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-2211, https://doi.org/10.5194/egusphere-egu21-2211, 2021.

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