(Article of periodic en Anglais - 2009)

Document title

Precipitation and temperature estimation error at alpine treeline ecotones using the Mountain Climate Simulator Model (MT-CLIM)

Authors(s) and Affiliation(s)

GRAFIUS D.R. (1) ; MALANSON G.P. (1) ;
(1) Dep. Geography, Univ., Iowa City, ETATS-UNIS


In order to improve modeling of alpine treeline responses to climate change, estimations of snowfall at treeline sites are needed. The MT-CLIM climate model was evaluated for this purpose by extrapolating precipitation and temperature from standard weather stations at lower elevations to 30 alpine SNOTEL study sites across the western United States. Quantification of the topography between the base stations and the SNOTEL sites was used in inverse distance weighting and compared to straight-line weighting. The predicted temperature and precipitation under different weighting methods were compared to observed data over 3 months during the winter of 2006-2007. The errors were mapped and their spatial pattern analyzed. Error patterns indicate strong gradients, particularly in the Pacific Northwest, that are suggestive of areas where additional characteristics of atmosphere-land interactions and boundary layer climatology need to be considered in modeling applications


Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2009, vol. 30, no4 [pp. 285-307]

Bibliographic references : 4 p.

Collation : 9 fig., 3 tabl.



INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.247/0272-3646.30.4.285

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
Refdoc record number (ud4) : 22073407 : Permanent link - XML version
Powered by Pxxo