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| Titel |
Intercomparison of Greenland climate interannual variability in global and regional models and relation to the NAO |
| VerfasserIn |
Heinz Jürgen Punge, Masa Kageyama, Valérie Masson-Delmotte, Xavier Fettweis, Gerhard Krinner, David Salas y Mélia, Jesper Sjolte, Hans-Christian Steen-Larssen, Konrad Steffen |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250040944
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| Zusammenfassung |
| The interannual variability of temperature in a set of global and
regional climate model is compared at several locations on Greenland,
choosing model grid points in proximity to the Iullissat and Tasiilaq
weather stations where long term observations are available and to ice
core drilling sites on the plateau.
While the regional model MAR correlates closely to observations due to
its nudging to observations, also the global models show variability on
the interannual scale that resembles to the one observed - less so,
however, on an interdecadal time scale.
The first EOFs of the models surface pressure resemble the NAO pattern.
Principal components derived from temperature and surface pressure are
highly correlated, which shows that the NAO's effect on temperature is
well represented. The relation breaks down when only data of the
Greenland sector are used, suggesting that other factors, like large
scale circulation patterns not related to the NAO, affect climate
variability in the region. However, for the western coast, a relation to
Labrador and Baffin Bay sea ice extent could not be shown. |
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