2007), Orbital and CO 2 forcing of late Paleozoic continental ice sheets, Geophys
[1] Contrasting views of the size, duration, and history of the Gondwanan continental ice sheets have been proposed from late Paleozoic glaciological and sedimentological evidence. To evaluate these differing views, a coupled ice sheet-climate model is used to simulate continental ice sheets under a...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.581.5318 2023-05-15T16:40:53+02:00 2007), Orbital and CO 2 forcing of late Paleozoic continental ice sheets, Geophys Daniel E. Horton Christopher J. Poulsen David Pollard The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.581.5318 http://www.earth.lsa.umich.edu/paleoclimate/pdfs/Horton et al.-2007GL031188.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.581.5318 http://www.earth.lsa.umich.edu/paleoclimate/pdfs/Horton et al.-2007GL031188.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.earth.lsa.umich.edu/paleoclimate/pdfs/Horton et al.-2007GL031188.pdf text ftciteseerx 2016-01-08T13:02:48Z [1] Contrasting views of the size, duration, and history of the Gondwanan continental ice sheets have been proposed from late Paleozoic glaciological and sedimentological evidence. To evaluate these differing views, a coupled ice sheet-climate model is used to simulate continental ice sheets under a wide range of late Paleozoic orbital and pCO2 conditions. The model experiments indicate that orbital variations at pCO2 concentrations below 2X pre-industrial atmospheric levels (PAL; 280 ppm) produce large changes in late Paleozoic ice volume (1.3 108 km3) and sea level (20 to 245 m). Between 2 and 8X PAL Gondwana continental ice is simulated only under the most extreme Southern Hemisphere cold summer orbit, but still produces significant ice volumes (8–12 107 km3). Our results highlight the important role of atmospheric CO2 in determining the distribution, volume, and stability of late Paleozoic ice sheets, factors that ultimately impacted sea level, cyclothem deposition, and global climate, and reconcile disparate views of the Late Paleozoic Ice Age. Text Ice Sheet Unknown |
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English |
description |
[1] Contrasting views of the size, duration, and history of the Gondwanan continental ice sheets have been proposed from late Paleozoic glaciological and sedimentological evidence. To evaluate these differing views, a coupled ice sheet-climate model is used to simulate continental ice sheets under a wide range of late Paleozoic orbital and pCO2 conditions. The model experiments indicate that orbital variations at pCO2 concentrations below 2X pre-industrial atmospheric levels (PAL; 280 ppm) produce large changes in late Paleozoic ice volume (1.3 108 km3) and sea level (20 to 245 m). Between 2 and 8X PAL Gondwana continental ice is simulated only under the most extreme Southern Hemisphere cold summer orbit, but still produces significant ice volumes (8–12 107 km3). Our results highlight the important role of atmospheric CO2 in determining the distribution, volume, and stability of late Paleozoic ice sheets, factors that ultimately impacted sea level, cyclothem deposition, and global climate, and reconcile disparate views of the Late Paleozoic Ice Age. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Daniel E. Horton Christopher J. Poulsen David Pollard |
spellingShingle |
Daniel E. Horton Christopher J. Poulsen David Pollard 2007), Orbital and CO 2 forcing of late Paleozoic continental ice sheets, Geophys |
author_facet |
Daniel E. Horton Christopher J. Poulsen David Pollard |
author_sort |
Daniel E. Horton |
title |
2007), Orbital and CO 2 forcing of late Paleozoic continental ice sheets, Geophys |
title_short |
2007), Orbital and CO 2 forcing of late Paleozoic continental ice sheets, Geophys |
title_full |
2007), Orbital and CO 2 forcing of late Paleozoic continental ice sheets, Geophys |
title_fullStr |
2007), Orbital and CO 2 forcing of late Paleozoic continental ice sheets, Geophys |
title_full_unstemmed |
2007), Orbital and CO 2 forcing of late Paleozoic continental ice sheets, Geophys |
title_sort |
2007), orbital and co 2 forcing of late paleozoic continental ice sheets, geophys |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.581.5318 http://www.earth.lsa.umich.edu/paleoclimate/pdfs/Horton et al.-2007GL031188.pdf |
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Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
http://www.earth.lsa.umich.edu/paleoclimate/pdfs/Horton et al.-2007GL031188.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.581.5318 http://www.earth.lsa.umich.edu/paleoclimate/pdfs/Horton et al.-2007GL031188.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766031319230316544 |