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| Titel |
Reconstructing glacier-based climates of LGM Europe and Russia – Part 3: Comparison with previous climate reconstructions |
| VerfasserIn |
R. Allen, M. J. Siegert, A. J. Payne |
| 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 ; 4, no. 4 ; Nr. 4, no. 4 (2008-11-13), S.265-280 |
| Datensatznummer |
250001868
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| Publikation (Nr.) |
 copernicus.org/cp-4-265-2008.pdf |
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| Zusammenfassung |
| Understanding past climates using GCM models is critical to confidently
predicting future climate change. Although previous analysis of GCM
simulations have shown them to under calculate European glacial temperature
anomalies (the difference between modern and glacial temperatures) such
analyses have focused primarily on results from glacial simulations alone.
Here we compare glacial maximum GCM results with the palaeoenvironment
derived from glacier-climate modelling. The comparison confirms that GCM
anomalies are not large enough, and that this is due to modern conditions
that are modelled too cold and glacial temperatures that are too warm. The
result is that GCM results, if applied to a glacier mass balance model, over
predict the extent of glaciers today, and under calculate their extent at
the last glacial (as depicted in glacial geological reconstructions).
Effects such as seasonality and model parameterisation change the magnitude
of the under calculation but still fail to match expected glacial
conditions. |
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