Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Simulation of snow mass and extent in general circulation models
Autore:
Yang, ZL; Dickinson, RE; Hahmann, AN; Niu, GY; Shaikh, M; Gao, XG; Bales, RC; Sorooshian, S; Jin, JM;
Indirizzi:
Univ Arizona, Inst Atmospher Phys, Tucson, AZ 85721 USA Univ Arizona Tucson AZ USA 85721 nst Atmospher Phys, Tucson, AZ 85721 USA
Titolo Testata:
HYDROLOGICAL PROCESSES
fascicolo: 12-13, volume: 13, anno: 1999,
pagine: 2097 - 2113
SICI:
0885-6087(199909)13:12-13<2097:SOSMAE>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
ATMOSPHERE TRANSFER SCHEME; SPATIAL VARIABILITY; SOIL-MOISTURE; COVER; BIOSPHERE; VALIDATION; PROJECT;
Keywords:
snow mass; snow extent; snow model; general circulation model (GCM); biosphere-atmosphere transfer scheme (BATS); global datasets;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Yang, ZL Univ Arizona, Inst Atmospher Phys, PAS Bldg 81, Tucson, AZ 85721 USA Univ Arizona PAS Bldg 81 Tucson AZ USA 85721 Tucson, AZ 85721 USA
Citazione:
Z.L. Yang et al., "Simulation of snow mass and extent in general circulation models", HYDROL PROC, 13(12-13), 1999, pp. 2097-2113

Abstract

An evaluation of the Biosphere-Atmosphere Transfer Scheme (BATS) snow submodel was conducted, both in a stand-alone mode and within the National Center for Atmospheric Research (NCAR) Community Climate Model version 3 (CCM3). We evaluated, in the stand-alone mode, the performance of BATS parameterizations at local scales using ground-based observations from the former Soviet Union and from Mammoth Mountain, California. The BATS snow scheme reproduces well the seasonal evolution of snow water equivalent in both sites, and the results for the Mammoth Mountain site compare well with those from amore complex, physically based model (SNTHERM). In the coupled mode, we evaluated the modelled snow cover extent, snow mass, precipitation and temperature from BATS as linked to the NCAR CCM3 using available observations. The coupled models capture the broad pattern of seasonal and geographical distribution of snow cover, with better overall performance than the passive microwave snow data derived from the Nimbus-7 Scanning Multi-channel Microwave Radiometer (SMMR) which generally underestimates snow depth. In terms ofcontinents, the snow mass is better simulated during the accumulation period than during the melt period, which is the case for both North America and Eurasia. The simulation of snow mass, precipitation and air temperature for North America is slightly better than that for Eurasia. A rigorous evaluation of snow simulations in coupled land-atmosphere models requires high quality global datasets of snow cover extent, snow depth and snow water equivalent. The available datasets and model outputs are not yet ready to fulfil this objective. Copyright (C) 1999 John Wiley & Sons, Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 10:30:45