LMDZ6A: The Atmospheric Component of the IPSL Climate Model With Improved and Better Tuned Physics
Hourdin, Frédéric ; Rio, Catherine ; Grandpeix, Jean-Yves ; Madeleine, Jean-Baptiste ; Cheruy, Frédérique ; Rochetin, Nicolas ; Jam, Arnaud ; Musat, Ionela ; Idelkadi, Abderrahmane ; Fairhead, Laurent ; Foujols, Marie-Alice ; Mellul, Lidia ; Traore, Abdoul-Khadre ; Dufresne, Jean-Louis ; Boucher, Olivier ; Lefebvre, Marie-Pierre ; Millour, Ehouarn ; Vignon, Etienne ; Jouhaud, Jean ; Bint Diallo, F. ; Lott, François ; Gastineau, Guillaume ; Caubel, Arnaud ; Meurdesoif, Yann ; Ghattas, Josefine
The improvement of global numerical models is essential for the anticipation of future climate changes. We present significant advances in the physical content of a particular atmospheric model which contributes to the simulations of the Coupled Model Intercomparison project CMIP that feed reports from the IPCC. We document in particular the improvements of the representation through 'parameterizations' of convective and cloudy processes. The article emphasizes the importance of strengthening the formalization of the methodology of development and tuning of models, so that new physical ideas can be translated into effective improvement of the climate representation.</p>
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