On the Sensitivity of the Devonian Climate to Continental Configuration, Vegetation Cover, Orbital Configuration, CO 2 Concentration, and Insolation
During the Devonian (419 to 359 million years ago), life on Earth witnessed decisive evolutionary breakthroughs, most prominently the colonization of land by vascular plants and vertebrates. However, it was also a period of major marine extinctions coinciding with marked changes in climate. The caus...
Published in: | Paleoceanography and Paleoclimatology |
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ftsubggeo:oai:e-docs.geo-leo.de:11858/9146 2023-05-15T18:18:39+02:00 On the Sensitivity of the Devonian Climate to Continental Configuration, Vegetation Cover, Orbital Configuration, CO 2 Concentration, and Insolation Brugger, Julia Hofmann, Matthias Petri, Stefan Feulner, Georg 2019 https://doi.org/10.1029/2019PA003562 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9146 eng eng doi:10.1029/2019PA003562 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9146 This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY ddc:551.74 Devonian Paleoclimate climate modeling vegetation and climate interaction temperature decrease comparison with proxies doc-type:article 2019 ftsubggeo https://doi.org/10.1029/2019PA003562 2022-11-09T06:51:40Z During the Devonian (419 to 359 million years ago), life on Earth witnessed decisive evolutionary breakthroughs, most prominently the colonization of land by vascular plants and vertebrates. However, it was also a period of major marine extinctions coinciding with marked changes in climate. The cause of these changes remains unknown, and it is therefore instructive to explore systematically how the Devonian climate responds to changes in boundary conditions. Here we use coupled climate model simulations to investigate separately the influence of changes in continental configuration, vegetation cover, carbon dioxide (CO2) concentrations, the solar constant, and orbital parameters on the Devonian climate. The biogeophysical effect of changes in vegetation cover is small, and the cooling due to continental drift is offset by the increasing solar constant. Variations of orbital parameters affect the Devonian climate, with the warmest climate states at high obliquity and high eccentricity. The prevailing mode of decadal to centennial climate variability relates to temperature fluctuations in high northern latitudes which are mediated by coupled oscillations involving sea ice cover, ocean convection, and a regional overturning circulation. The temperature evolution during the Devonian is dominated by the strong decrease in atmospheric CO2. Albedo changes due to increasing vegetation cover cannot explain the temperature rise found in Late Devonian proxy data. Finally, simulated temperatures are significantly lower than estimates based on oxygen isotope ratios, suggesting a lower δ18O ratio of Devonian seawater. Article in Journal/Newspaper Sea ice GEO-LEOe-docs (FID GEO) Paleoceanography and Paleoclimatology 34 8 1375 1398 |
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English |
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ddc:551.74 Devonian Paleoclimate climate modeling vegetation and climate interaction temperature decrease comparison with proxies |
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ddc:551.74 Devonian Paleoclimate climate modeling vegetation and climate interaction temperature decrease comparison with proxies Brugger, Julia Hofmann, Matthias Petri, Stefan Feulner, Georg On the Sensitivity of the Devonian Climate to Continental Configuration, Vegetation Cover, Orbital Configuration, CO 2 Concentration, and Insolation |
topic_facet |
ddc:551.74 Devonian Paleoclimate climate modeling vegetation and climate interaction temperature decrease comparison with proxies |
description |
During the Devonian (419 to 359 million years ago), life on Earth witnessed decisive evolutionary breakthroughs, most prominently the colonization of land by vascular plants and vertebrates. However, it was also a period of major marine extinctions coinciding with marked changes in climate. The cause of these changes remains unknown, and it is therefore instructive to explore systematically how the Devonian climate responds to changes in boundary conditions. Here we use coupled climate model simulations to investigate separately the influence of changes in continental configuration, vegetation cover, carbon dioxide (CO2) concentrations, the solar constant, and orbital parameters on the Devonian climate. The biogeophysical effect of changes in vegetation cover is small, and the cooling due to continental drift is offset by the increasing solar constant. Variations of orbital parameters affect the Devonian climate, with the warmest climate states at high obliquity and high eccentricity. The prevailing mode of decadal to centennial climate variability relates to temperature fluctuations in high northern latitudes which are mediated by coupled oscillations involving sea ice cover, ocean convection, and a regional overturning circulation. The temperature evolution during the Devonian is dominated by the strong decrease in atmospheric CO2. Albedo changes due to increasing vegetation cover cannot explain the temperature rise found in Late Devonian proxy data. Finally, simulated temperatures are significantly lower than estimates based on oxygen isotope ratios, suggesting a lower δ18O ratio of Devonian seawater. |
format |
Article in Journal/Newspaper |
author |
Brugger, Julia Hofmann, Matthias Petri, Stefan Feulner, Georg |
author_facet |
Brugger, Julia Hofmann, Matthias Petri, Stefan Feulner, Georg |
author_sort |
Brugger, Julia |
title |
On the Sensitivity of the Devonian Climate to Continental Configuration, Vegetation Cover, Orbital Configuration, CO 2 Concentration, and Insolation |
title_short |
On the Sensitivity of the Devonian Climate to Continental Configuration, Vegetation Cover, Orbital Configuration, CO 2 Concentration, and Insolation |
title_full |
On the Sensitivity of the Devonian Climate to Continental Configuration, Vegetation Cover, Orbital Configuration, CO 2 Concentration, and Insolation |
title_fullStr |
On the Sensitivity of the Devonian Climate to Continental Configuration, Vegetation Cover, Orbital Configuration, CO 2 Concentration, and Insolation |
title_full_unstemmed |
On the Sensitivity of the Devonian Climate to Continental Configuration, Vegetation Cover, Orbital Configuration, CO 2 Concentration, and Insolation |
title_sort |
on the sensitivity of the devonian climate to continental configuration, vegetation cover, orbital configuration, co 2 concentration, and insolation |
publishDate |
2019 |
url |
https://doi.org/10.1029/2019PA003562 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9146 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
doi:10.1029/2019PA003562 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9146 |
op_rights |
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2019PA003562 |
container_title |
Paleoceanography and Paleoclimatology |
container_volume |
34 |
container_issue |
8 |
container_start_page |
1375 |
op_container_end_page |
1398 |
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1766195288768249856 |