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Titolo:
A NEW SNOW PARAMETERIZATION FOR THE METEO-FRANCE CLIMATE MODEL .2. VALIDATION IN A 3-D GCM EXPERIMENT
Autore:
DOUVILLE H; ROYER JF; MAHFOUF JF;
Indirizzi:
METEO FRANCE,CNRM,42 AVE CORIOLIS F-31057 TOULOUSE FRANCE
Titolo Testata:
Climate dynamics
fascicolo: 1, volume: 12, anno: 1995,
pagine: 37 - 52
SICI:
0930-7575(1995)12:1<37:ANSPFT>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPATIAL VARIABILITY; COVER; TEMPERATURE; RAINFALL; ALBEDO; MASS; PRECIPITATION; MICROWAVE; MOISTURE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
44
Recensione:
Indirizzi per estratti:
Citazione:
H. Douville et al., "A NEW SNOW PARAMETERIZATION FOR THE METEO-FRANCE CLIMATE MODEL .2. VALIDATION IN A 3-D GCM EXPERIMENT", Climate dynamics, 12(1), 1995, pp. 37-52

Abstract

Both observational and numerical studies demonstrate the sensitivity of the atmosphere to variations in the extent and mass of snow cover. There is therefore a need for simple but realistic snow parameterizations in forecast and climate models. A new snow hydrology scheme has recently been developed at Meteo-France for use in the ARPEGE climate model and has been successfully tested against local field measurements in stand-alone experiments. This study describes the global validationof the parameterization in a 3-year integration for the present-day climate within the T42L30 version of ARPEGE. Results are com pared withthose from a control simulation and with available observed climatologies, in order to assess the impact of the new snow parameterization on the simulated surface climate. The seasonal cycle of the Northern Hemisphere snow cover is clearly improved when using the new scheme. Thesnow pack is still slightly overestimated in winter, but its polewardretreat is better reproduced during the melting season. As a consequence, the modified GCM performs well in simulating the springtime continental heating, which may play a strong role in the simulation of the Asian summer monsoon.

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Documento generato il 27/11/20 alle ore 10:42:43