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| Titel |
Northern hemisphere winter storm tracks of the Eemian interglacial and the last glacial inception |
| VerfasserIn |
F. Kaspar, T. Spangehl, U. Cubasch |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 3, no. 2 ; Nr. 3, no. 2 (2007-04-23), S.181-192 |
| Datensatznummer |
250000891
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| Publikation (Nr.) |
 copernicus.org/cp-3-181-2007.pdf |
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| Zusammenfassung |
| Climate simulations of the Eemian interglacial and the last glacial inception
have been performed by forcing a coupled ocean-atmosphere general circulation
model with insolation patterns of these periods. The parameters of the
Earth's orbit have been set to conditions of 125 000 and 115 000 years
before present (yr BP). Compared to today, these dates represent periods with
enhanced and weakened seasonality of insolation in the northern hemisphere.
Here we analyse the simulated change in northern hemisphere winter storm
tracks. The change in the orbital configuration has a strong impact on the
meridional temperature gradients and therefore on strength and location of
the storm tracks. The North Atlantic storm track is strengthened, shifted
northward and extends further to the east in the simulation for the Eemian at
125 kyr BP. As one consequence, the northern parts of Europe experience an
increase in winter precipitation. The frequency of winter storm days
increases over large parts of the North Atlantic including the British Isles
and the coastal zones of north-western Europe. Opposite but weaker changes in
storm track activity are simulated for 115 kyr BP. |
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