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  Quantifying the effect of vegetation dynamics on the climate of the last glacial maximum

Jahn, A., Claussen, M., Ganopolski, A., & Brovkin, V. (2005). Quantifying the effect of vegetation dynamics on the climate of the last glacial maximum. Climate of the Past, 1(1), 1-7. doi:10.5194/cp-1-1-2005.

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CP-1-2005-1.pdf (Publisher version), 978KB
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CP-1-2005-1.pdf
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Final Revised Paper
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Jahn, A.1, Author
Claussen, Martin1, Author           
Ganopolski, A.1, Author           
Brovkin, Victor1, Author           
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1external, ou_persistent22              

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 Abstract: The importance of the biogeophysical atmosphere-vegetation feedback in comparison with the radiative effect of lower atmospheric CO(2) concentrations and the presence of ice sheets at the last glacial maximum (LGM) is investigated with the climate system model CLIMBER-2. Equilibrium experiments reveal that most of the global cooling at the LGM (-5.1 degrees C) relative to ( natural) present-day conditions is caused by the introduction of ice sheets into the model (-3.0 degrees C), followed by the effect of lower atmospheric CO(2) levels at the LGM (-1.5 degrees C), while a synergy between these two factors appears to be very small on global average. The biogeophysical effects of changes in vegetation cover are found to cool the global LGM climate by 0.6 degrees C. The latter are most pronounced in the northern high latitudes, where the taiga-tundra feedback causes annually averaged temperature changes of up to -2.0 degrees C, while the radiative effect of lower atmospheric CO(2) in this region only produces a cooling of 1.5 degrees C. Hence, in this region, the temperature changes caused by vegetation dynamics at the LGM exceed the cooling due to lower atmospheric CO(2) concentrations.

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Language(s): eng - English
 Dates: 20052005
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: ISI: 000244467600001
DOI: 10.5194/cp-1-1-2005
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Title: Climate of the Past
Source Genre: Journal
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Publ. Info: Katlenberg-Lindau, Germany : Published by Copernicus on behalf of the European Geosciences Union
Pages: - Volume / Issue: 1 (1) Sequence Number: - Start / End Page: 1 - 7 Identifier: ISSN: 1814-9324
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000033790