Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks
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 part...
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ftpubman:oai:pure.mpg.de:item_1593224 2023-08-27T04:11:55+02:00 Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks Otto, J. Raddatz, T. Claussen, M. 2009 application/pdf http://hdl.handle.net/11858/00-001M-0000-000E-734B-7 http://hdl.handle.net/11858/00-001M-0000-000E-DFC2-3 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1029/2009GL041457 http://hdl.handle.net/11858/00-001M-0000-000E-734B-7 http://hdl.handle.net/11858/00-001M-0000-000E-DFC2-3 info:eu-repo/semantics/openAccess Geophysical Research Letters info:eu-repo/semantics/article 2009 ftpubman https://doi.org/10.1029/2009GL041457 2023-08-02T01:25:55Z 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. Article in Journal/Newspaper Sea ice Max Planck Society: MPG.PuRe Geophysical Research Letters 36 23 |
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Max Planck Society: MPG.PuRe |
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English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Otto, J. Raddatz, T. Claussen, M. |
spellingShingle |
Otto, J. Raddatz, T. Claussen, M. Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks |
author_facet |
Otto, J. Raddatz, T. Claussen, M. |
author_sort |
Otto, J. |
title |
Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks |
title_short |
Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks |
title_full |
Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks |
title_fullStr |
Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks |
title_full_unstemmed |
Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks |
title_sort |
climate variability-induced uncertainty in mid-holocene atmosphere-ocean-vegetation feedbacks |
publishDate |
2009 |
url |
http://hdl.handle.net/11858/00-001M-0000-000E-734B-7 http://hdl.handle.net/11858/00-001M-0000-000E-DFC2-3 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Geophysical Research Letters |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2009GL041457 http://hdl.handle.net/11858/00-001M-0000-000E-734B-7 http://hdl.handle.net/11858/00-001M-0000-000E-DFC2-3 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2009GL041457 |
container_title |
Geophysical Research Letters |
container_volume |
36 |
container_issue |
23 |
_version_ |
1775355598098923520 |