Titre du document / Document title
High-resolution regional climate model validation and permafrost simulation for the East European Russian Arctic : Advances in regional climate modeling (ARCM)
Auteur(s) / Author(s)
CHRISTENSEN Jens Hesselbjerg (1) ;
KUHRY Peter (2) ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) Danish Meteorological Institute, Copenhagen, DANEMARK
(2) Arctic Centre, Rovaniemi, FINLANDE
Résumé / Abstract
A 15-year-long, 16 km horizontal resolution, present-day climate simulation has been conducted with the HIRHAM4 regional climate model. The model has been forced by the European Centre for Medium-Range Weather Forecasts reanalyses at the lateral boundary and over sea by sea surface temperature and sea ice concentrations from the same source. The model domain is centered over the European part of Arctic Russia focusing on the Usa River basin near the Ural Mountains. It is demonstrated that with this fine mesh, the model simulates the annual course and interannual variability in temperature and precipitation quite realistically. Furthermore the model captures the timing of permanent snow cover very accurately with less than 1-week discrepancy in both autumn and spring. An interpretation of modeled subsurface layer temperatures in terms of mean annual temperature and a frost index reveals that the model captures present-day regional permafrost patterns to a high degree of accuracy.
Revue / Journal Title
Journal of geophysical research
ISSN
0148-0227
Source / Source
2000, vol. 105, n
oD24, pp. 29647-29658 (1 p.1/4)
Langue / Language
Anglais
Editeur / Publisher
American Geophysical Union, Washington, DC, ETATS-UNIS
(1949)
(Revue)
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Localisation / Location
INIST-CNRS, Cote INIST : 3144, 35400009382327.0250
Nº notice refdoc (ud4) : 893448
