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| Titel |
Reconstructing glacier-based climates of LGM Europe and Russia – Part 2: A dataset of LGM precipitation/temperature relations derived from degree-day modelling of palaeo glaciers |
| 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.249-263 |
| Datensatznummer |
250001867
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| Publikation (Nr.) |
 copernicus.org/cp-4-249-2008.pdf |
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| Zusammenfassung |
| The study of European and Russian Quaternary glacial-geological evidence
during the last 15 years has generated sufficient data to use former glacial
extent as a proxy for Last Glacial Maximum (LGM) climate (precipitation and
temperature) at a continental scale. Utilisation of such data is relevant
for two reasons. First, continental to global scale proxy reconstructions of
past climate are an important tool in the assessment of retrospective
general circulation model (GCM) simulations. Second, the development of a
multi-proxy approach will result in a more robust proxy based climate
signal. A new and independent dataset of 36 LGM precipitation and
temperature relationships derived from European and Russian mountain regions
is presented in this paper. A simple glacier-climate model was used to
establish the optimum LGM precipitation/temperature conditions for each
region from a suite of over 4000 model climates using the principle of zero
cumulative mass balance. Clear regional trends are present in the
reconstructed LGM precipitation and temperature curves; assuming present
precipitation temperature anomalies north of the Alps are 2°C and 5°C
larger than those in the western and eastern Mediterranean, respectively.
In Russia the model results suggest that the climates in both the Arctic
Urals and Puterana Plateau were probably conducive to the existence of small
mountain glaciers at the LGM. |
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