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  Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks

Otto, J., Raddatz, T., & Claussen, M. (2009). Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks. Geophysical Research Letters, 36: L23710. doi:10.1029/2009GL041457.

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GRL-36-2009.pdf (Publisher version), 514KB
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 Creators:
Otto, J.1, 2, 3, Author           
Raddatz, T.4, Author           
Claussen, Martin1, Author           
Affiliations:
1Director’s Research Group LES, The Land in the Earth System, MPI for Meteorology, Max Planck Society, ou_913564              
2Climate-Biogeosphere Interaction, The Land in the Earth System, MPI for Meteorology, Max Planck Society, ou_913566              
3IMPRS on Earth System Modelling, MPI for Meteorology, Max Planck Society, ou_913547              
4Global Vegetation Modelling, The Land in the Earth System, MPI for Meteorology, Max Planck Society, ou_913562              

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 Abstract: Previous modelling studies have shown that the response of the ocean and the vegetation to mid-Holocene insolation feeds back on the climate. There is less consensus, however, on the relative magnitude of the two feedbacks and the strength of the synergy between them. This discrepancy may arise partly from the statistical uncertainty caused by internal climate variability as the common analysis period is only about a century. Therefore, we have performed an ensemble of centennial-scale simulations using the general circulation model ECHAM5/JSBACH-MPIOM. The direct atmospheric response and the weak atmosphere-vegetation feedback are statistically robust. The synergy is always weak and it changes sign between the ensemble members. The simulations, including a dynamic ocean, show a large variability at sea-ice margins. This variability leads to a sampling error which affects the magnitude of the diagnosed feedbacks. Citation: Otto, J., T. Raddatz, and M. Claussen (2009), Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks, Geophys. Res. Lett., 36, L23710, doi:10.1029/2009GL041457.

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Language(s): eng - English
 Dates: 20092009
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: ISI: 000272714000003
DOI: 10.1029/2009GL041457
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Title: Geophysical Research Letters
  Other : Geophys. Res. Letts.
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Geophysical Union
Pages: - Volume / Issue: 36 Sequence Number: L23710 Start / End Page: - Identifier: ISSN: 0094-8276
CoNE: https://pure.mpg.de/cone/journals/resource/954925465217