Séminaire
Titre :
Revisiting Gill's circulation. Dynamic response to diabatic heating of different horizontal scales
Nom du conférencier :
Beatriz Reboredo Viso
Son affiliation :
University of Auckland, Department of Physics
Laboratoire organisateur : LMD
Date et heure : 06-06-2017 11h00
Lieu :
ENS, 24 rue Lhomond, 5eme étage, département de Géosciences, Salle Serre
Résumé :
The horizontal extent of diabatic heating associated with the Madden-Julian Oscillation is thought to be crucial to its development, and the inability of GCMs to simulate the spatial, horizontal organization of clouds is considered a leading hypothesis to explain their limited capacity to simulate MJO events. This prevents the MJO large-circulation response from developing and feeding back on the development of clouds. We apply mid-tropospheric heating of different size in simple linear and non-linear models of the tropical atmosphere following Gill's seminal work on heat-induced tropical circulations.
Contact :
caroline.muller@lmd.ens.fr