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| Titel |
Coupled climate model simulation of Holocene cooling events: oceanic feedback amplifies solar forcing |
| VerfasserIn |
H. Renssen, H. Goosse, R. Muscheler |
| 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 ; 2, no. 2 ; Nr. 2, no. 2 (2006-09-13), S.79-90 |
| Datensatznummer |
250000495
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| Publikation (Nr.) |
 copernicus.org/cp-2-79-2006.pdf |
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| Zusammenfassung |
| The coupled global atmosphere-ocean-vegetation model ECBilt-CLIO-VECODE is
used to perform transient simulations of the last 9000 years, forced by
variations in orbital parameters, atmospheric greenhouse gas concentrations
and total solar irradiance (TSI). The objective is to study the impact of
decadal-to-centennial scale TSI variations on Holocene climate variability.
The simulations show that negative TSI anomalies increase the probability of
temporary relocations of the site with deepwater formation in the Nordic
Seas, causing an expansion of sea ice that produces additional cooling. The
consequence is a characteristic climatic anomaly pattern with cooling over
most of the North Atlantic region that is consistent with proxy evidence for
Holocene cold phases. Our results thus suggest that the ocean is able to
play an important role in amplifying centennial-scale climate variability. |
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