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Downscaling of greenhouse gas induced climate change in two GCMs with the Rossby Centre regional climate model for northern Europe
SMHI, Research Department, Climate research - Rossby Centre.ORCID iD: 0000-0003-3657-1588
SMHI, Research Department, Climate research - Rossby Centre.ORCID iD: 0000-0001-5709-9804
SMHI, Research Department, Climate research - Rossby Centre.
2001 (English)In: Tellus. Series A, Dynamic meteorology and oceanography, ISSN 0280-6495, E-ISSN 1600-0870, Vol. 53, no 2, 168-191 p.Article in journal (Refereed) Published
Abstract [en]

Two 2 x 10-year climate change experiments made with the Rossby Centre regional Atmospheric climate model(RCA) are reported. These two experiments are driven by boundary data from two global climate change simulations, one made with HadCM2 and the other with ECKAM4/OPYC3, in which the global mean warming is virtually the same, 2.6 degreesC. The changes in mean temperature and precipitation show similarities (including broadly the same increase in temperature and in northern Europe a general increase in annual precipitation) as well as differences between the two RCA experiments. These changes are strongly governed by the driving GCM simulations. Even on the RCA grid box scale, the differences in change between RCA and the driving GCM are generally smaller than the differences between the two GCMs. Typically about a half of the local differences between the two RCA simulations are attributed to noise generated by internal variability, which also seems to explain a substantial part of the RCA-GCM differences particularly for precipitation change. RCA includes interactive model components for the Baltic Sea and inland lakes of northern Europe. The simulated changes in these water bodies are discussed with emphasis on the wintertime ice conditions. Comparison with an earlier RCA experiment indicates that a physically consistent treatment of these water bodies is also of importance for the simulated atmospheric climate change.

Place, publisher, year, edition, pages
2001. Vol. 53, no 2, 168-191 p.
National Category
Climate Research
Research subject
Climate
Identifiers
URN: urn:nbn:se:smhi:diva-1483DOI: 10.1034/j.1600-0870.2001.00168.xISI: 000169810400003OAI: oai:DiVA.org:smhi-1483DiVA: diva2:848712
Available from: 2015-08-26 Created: 2015-08-17 Last updated: 2016-04-12Bibliographically approved

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Räisänen, JouniRummukainen, Markku
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