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Arctic future scenario experiments with a coupled regional climate model

Abstract

A number of regional Arctic dynamical downscaling scenario experiments are performed with the Rossby Centre Atmosphere Ocean climate model. The simulations are based on IPCC AR4 scenario simulations with the global coupled models BCCR2.0 and ECHAM5/MPI-OM and differ in the surface salinity treatment and lateral boundary conditions. Compared to the global runs, the regional simulations show a warmer Arctic, which agrees better to ERA-40 reanalysis data in the 20th century, and a slightly smaller trend in the 21st century. The ECHAM-forced runs show several periods with rapid summer sea ice reductions and partial recovery thereafter. Summer sea ice disappears for the first time around 2040. The large-scale change patterns of sea level pressure (SLP) and air temperature in the regional simulations are mainly dominated by the forcing of the global models but locally significant modifications occur. Pressure is reduced by 1-3 hPa and air temperature increases by 2-4 K in most Arctic regions and up to 10 K where winter sea ice disappears. The largely reduced Arctic sea ice area leads to increased atmospheric variability and more extremes in winter SLP and summer air temperature
Authors:
Koenigk, Torben; Doescher, Ralf; Nikulin, Grigory [1] 
  1. Rossby Centre, SMHI, Norrkoeping (Sweden)
Publication Date:
Jan 15, 2011
Product Type:
Journal Article
Resource Relation:
Journal Name: Tellus, Series A - Dynamic Meteorology and Oceanography; Journal Volume: 63A; Journal Issue: 1; Other Information: 47 refs., 14 figs., 1 tab.; 10.1111/J.1600-0870.2010.00474.X
Subject:
54 ENVIRONMENTAL SCIENCES; CLIMATE MODELS; ARCTIC REGIONS; ICE; AMBIENT TEMPERATURE
OSTI ID:
1008096
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0280-6495; TRN: SE1107048
Availability:
Available from DOI: http://dx.doi.org/10.1111/j.1600-0870.2010.00474.x
Submitting Site:
SWD
Size:
page(s) 69-86
Announcement Date:
Mar 14, 2011

Citation Formats

Koenigk, Torben, Doescher, Ralf, and Nikulin, Grigory. Arctic future scenario experiments with a coupled regional climate model. Sweden: N. p., 2011. Web. doi:10.1111/J.1600-0870.2010.00474.X.
Koenigk, Torben, Doescher, Ralf, & Nikulin, Grigory. Arctic future scenario experiments with a coupled regional climate model. Sweden. doi:10.1111/J.1600-0870.2010.00474.X.
Koenigk, Torben, Doescher, Ralf, and Nikulin, Grigory. 2011. "Arctic future scenario experiments with a coupled regional climate model." Sweden. doi:10.1111/J.1600-0870.2010.00474.X. https://www.osti.gov/servlets/purl/10.1111/J.1600-0870.2010.00474.X.
@misc{etde_1008096,
title = {Arctic future scenario experiments with a coupled regional climate model}
author = {Koenigk, Torben, Doescher, Ralf, and Nikulin, Grigory}
abstractNote = {A number of regional Arctic dynamical downscaling scenario experiments are performed with the Rossby Centre Atmosphere Ocean climate model. The simulations are based on IPCC AR4 scenario simulations with the global coupled models BCCR2.0 and ECHAM5/MPI-OM and differ in the surface salinity treatment and lateral boundary conditions. Compared to the global runs, the regional simulations show a warmer Arctic, which agrees better to ERA-40 reanalysis data in the 20th century, and a slightly smaller trend in the 21st century. The ECHAM-forced runs show several periods with rapid summer sea ice reductions and partial recovery thereafter. Summer sea ice disappears for the first time around 2040. The large-scale change patterns of sea level pressure (SLP) and air temperature in the regional simulations are mainly dominated by the forcing of the global models but locally significant modifications occur. Pressure is reduced by 1-3 hPa and air temperature increases by 2-4 K in most Arctic regions and up to 10 K where winter sea ice disappears. The largely reduced Arctic sea ice area leads to increased atmospheric variability and more extremes in winter SLP and summer air temperature}
doi = {10.1111/J.1600-0870.2010.00474.X}
journal = {Tellus, Series A - Dynamic Meteorology and Oceanography}
issue = {1}
volume = {63A}
place = {Sweden}
year = {2011}
month = {Jan}
}