La Houille Blanche
Number 7, Octobre 1997
|Page(s)||69 - 75|
|Published online||01 August 2009|
Couplage d'un modèle de neige avec un modèle de climat
Coupling a multi-layered snow model with a GCM
Centre d'Etudes de la Neige, Météo-France : CNRM
2 National Institute of Meteorology and Hydrology, Bulgarian Academy of Science
A multi-layered snow model, including most physical processes governing the evolution of snowpacks, has been coupled to a GCM to improve the represeniation of snow cover in climate simulations. The snow model, called Crocus, includes original features to simulate the evolution of snowpack layering which allows a realistic calculation of sonow albedo as a function of the type and size of the crystals of the surface layer. The coupling scheme is based on a synchronous run of the GCM and of the snow model with an exchange of the surface fluxes at every time step. It was tested in a 5 year run at a T42 resolution. The impact on the atmosphere was important over most covered regions and the sonowpacks simulated in the different regions present a layering which is realistic and very variable in connection with the climate. The simulated snow cover compares satisfactorily with the present snow climatology.
© Société Hydrotechnique de France, 1997
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.