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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, noD24, pp. 29647-29658 (1 p.1/4)

Langue / Language

Anglais

Editeur / Publisher

American Geophysical Union, Washington, DC, ETATS-UNIS  (1949-2012) (Revue)

Mots-clés anglais / English Keywords

High resolution

;

Climate models

;

Validation

;

Permafrost

;

Grid pattern

;

Atmospheric temperature

;

Atmospheric precipitation

;

Concentration

;

River basins

;

Mountain

;

Annual variation

;

Interannual variation

;

Surface temperature

;

Snow cover

;

Autumn

;

Spring(season)

;

Subsurface layer

;

Regional study

;

Numerical simulation

;

Russian Arctic

;

Russia

;

Eurasia

;

Mots-clés français / French Keywords

Haute résolution

;

Modèle climat

;

Validation

;

Pergélisol

;

Maillage

;

Température atmosphérique

;

Précipitation atmosphérique

;

Concentration

;

Bassin fluvial

;

Montagne

;

Variation annuelle

;

Variation interannuelle

;

Température superficielle

;

Couverture neige

;

Automne

;

Printemps

;

Couche subsuperficielle

;

Etude régionale

;

Simulation numérique

;

Arctique Russie

;

Russie

;

Eurasie

;

Mots-clés espagnols / Spanish Keywords

Alta resolucion

;

Validación

;

Permafrost

;

Celdarada

;

Temperatura atmosférica

;

Precipitación atmosférica

;

Concentración

;

Cuenca fluvial

;

Montaña

;

Variación anual

;

Variación interanual

;

Temperatura superficial

;

Cubierta nieve

;

Otoño

;

Primavera

;

Capa subsuperficial

;

Estudio regional

;

Simulación numérica

;

Ártico Rusia

;

Rusia

;

Eurasia

;

Localisation / Location

INIST-CNRS, Cote INIST : 3144, 35400009382327.0250

Nº notice refdoc (ud4) : 893448



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