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Titolo:
Surface energy balance on the arctic tundra: Measurements and models
Autore:
Lynch, AH; Chapin, FS; Hinzman, LD; Wu, W; Lilly, E; Vourlitis, G; Kim, E;
Indirizzi:
Univ Colorado, CIRES, Boulder, CO 80309 USA Univ Colorado Boulder CO USA 80309 Colorado, CIRES, Boulder, CO 80309 USA Univ Alaska, Inst Arctic Biol, Fairbanks, AK 99775 USA Univ Alaska Fairbanks AK USA 99775 t Arctic Biol, Fairbanks, AK 99775 USA Univ Alaska, Water & Environm Res Ctr, Fairbanks, AK 99775 USA Univ Alaska Fairbanks AK USA 99775 ironm Res Ctr, Fairbanks, AK 99775 USA San Diego State Univ, Global Change Res Grp, San Diego, CA 92182 USA San Diego State Univ San Diego CA USA 92182 Grp, San Diego, CA 92182 USA Univ Michigan, Dept Elect Engn, Ann Arbor, MI 48109 USA Univ Michigan AnnArbor MI USA 48109 Elect Engn, Ann Arbor, MI 48109 USA
Titolo Testata:
JOURNAL OF CLIMATE
fascicolo: 8, volume: 12, anno: 1999,
parte:, 2
pagine: 2585 - 2606
SICI:
0894-8755(199908)12:8<2585:SEBOTA>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
CLIMATE SYSTEM; BOREAL FOREST; POTENTIAL RESPONSE; BIOSPHERE MODEL; CARBON-DIOXIDE; ALPINE TUNDRA; VEGETATION; EVAPOTRANSPIRATION; ECOSYSTEMS; IMPACTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
88
Recensione:
Indirizzi per estratti:
Indirizzo: Lynch, AH Univ Colorado, CIRES, Box 216, Boulder, CO 80309 USA Univ Colorado Box 216 Boulder CO USA 80309 Boulder, CO 80309 USA
Citazione:
A.H. Lynch et al., "Surface energy balance on the arctic tundra: Measurements and models", J CLIMATE, 12(8), 1999, pp. 2585-2606

Abstract

The progress made in the Land-Atmosphere-Ice Interactions Flux Study over the past 4 yr to fully characterize the biophysical fluxes in the snow-freetundra ecosystem and their relationship to climate and climate change is described. This paper is the result of a synthesis effort to bring together the measurements of surface fluxes at various sites on the North Slope of Alaska in the snow-free period of 1995 with the results of modeling efforts for this region. It is found that methodological and site dissimilarities contribute to measurement differences at least as much as instrument and sampling error, even for closely collocated and similarly vegetated sites. Theregional climate model employed in this study generally simulates fluxes that are within the range of measured fluxes, but tends to overestimate bothnet radiation and latent heat fluxes. The regional model also captures site to site variations quite well, which appear to be more sensitive to mesoscale meteorological conditions than on specifics of site characteristics. The active layer model employed in this study performs well in estimating ground heat flux bur rather more poorly in simulating turbulent fluxes. The global climate model is unable to capture the broad-scale response of the land surface sensible heat flux and net radiation, although it performs rather better in the simulation of latent and ground heat fluxes. Finally, the intended purposes and applications of both data and model simulations have astrong impact on their applicability to other studies.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 09:34:50