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Titolo:
A NEW SNOW PARAMETERIZATION FOR THE METEO-FRANCE CLIMATE MODEL .1. VALIDATION IN STAND-ALONE EXPERIMENTS
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: 21 - 35
SICI:
0930-7575(1995)12:1<21:ANSPFT>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
GENERAL-CIRCULATION MODELS; LAND-SURFACE SCHEME; NORTHERN-HEMISPHERE; GLOBAL CLIMATE; SOIL-MOISTURE; HEAT-BALANCE; SEA-ICE; COVER; ALBEDO; TEMPERATURE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
56
Recensione:
Indirizzi per estratti:
Citazione:
H. Douville et al., "A NEW SNOW PARAMETERIZATION FOR THE METEO-FRANCE CLIMATE MODEL .1. VALIDATION IN STAND-ALONE EXPERIMENTS", Climate dynamics, 12(1), 1995, pp. 21-35

Abstract

Both observational studies and numerical experiments 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. This study describes anew physically-based snow hydrology for use in the Meteo-France climate model, together with the ISBA land-surface scheme. A restricted number of parameters has been added, while preserving a single surface energy budget. The ageing process of the snow pack has been introduced through prognostic equations for snow density and snow albedo. Snowmeltcomputation has been modified over partially snow-covered and vegetated areas. The new scheme has been validated against field measurementsin stand-alone simulations forced by observed meteorological conditions. The results show a strong improvement in the model's performance, thereby suggesting that a simple one-layer snow model is able to reproduce the main physical mechanisms governing the snow pack evolution. Part II of the present study will concern the validation in a 3-D experiment within the Meteo-France climate model.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 10:38:45