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...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Hoboken, NJ : Wiley
2019
|
Subjects: | |
Online Access: | https://oa.tib.eu/renate/handle/123456789/7585 https://doi.org/10.34657/6632 |
id |
ftleibnizopen:oai:oai.leibnizopen.de:TdJEfYoBNQPDO7WII3rP |
---|---|
record_format |
openpolar |
spelling |
ftleibnizopen:oai:oai.leibnizopen.de:TdJEfYoBNQPDO7WII3rP 2023-10-09T21:55:53+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 application/pdf https://oa.tib.eu/renate/handle/123456789/7585 https://doi.org/10.34657/6632 eng eng Hoboken, NJ : Wiley CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ Paleoceanography and paleoclimatology 34 (2019), Nr. 8 climate modeling comparison with proxies Devonian Paleoclimate temperature decrease vegetation and climate interaction 550 article Text 2019 ftleibnizopen https://doi.org/10.34657/6632 2023-09-10T23:35:13Z 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 d18O ratio of Devonian seawater. ©2019. The Authors. publishedVersion Article in Journal/Newspaper Sea ice LeibnizOpen (The Leibniz Association) |
institution |
Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
climate modeling comparison with proxies Devonian Paleoclimate temperature decrease vegetation and climate interaction 550 |
spellingShingle |
climate modeling comparison with proxies Devonian Paleoclimate temperature decrease vegetation and climate interaction 550 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 |
climate modeling comparison with proxies Devonian Paleoclimate temperature decrease vegetation and climate interaction 550 |
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 d18O ratio of Devonian seawater. ©2019. The Authors. publishedVersion |
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 |
publisher |
Hoboken, NJ : Wiley |
publishDate |
2019 |
url |
https://oa.tib.eu/renate/handle/123456789/7585 https://doi.org/10.34657/6632 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Paleoceanography and paleoclimatology 34 (2019), Nr. 8 |
op_rights |
CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.34657/6632 |
_version_ |
1779320096537182208 |