The Arctic cryosphere in the Mid-Pliocene BRIDGE, School of Geographical Sciences, University of Bristol
The Mid-Pliocene (ca 3 Myr ago) was a relatively warm period, with increased atmospheric CO2 relative to pre-industrial. It has therefore been highlighted as a possible palaeo-analogue for the future. However, changed vegetation patterns, orography and smaller ice sheets also influenced the Mid-Plio...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.667.7893 2023-05-15T14:30:58+02:00 The Arctic cryosphere in the Mid-Pliocene BRIDGE, School of Geographical Sciences, University of Bristol The Pennsylvania State University CiteSeerX Archives 2008 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.7893 http://rsta.royalsocietypublishing.org/content/roypta/367/1886/49.full.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.7893 http://rsta.royalsocietypublishing.org/content/roypta/367/1886/49.full.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://rsta.royalsocietypublishing.org/content/roypta/367/1886/49.full.pdf Pliocene ice sheets cryosphere Greenland palaeoclimate text 2008 ftciteseerx 2016-01-08T17:10:51Z The Mid-Pliocene (ca 3 Myr ago) was a relatively warm period, with increased atmospheric CO2 relative to pre-industrial. It has therefore been highlighted as a possible palaeo-analogue for the future. However, changed vegetation patterns, orography and smaller ice sheets also influenced the Mid-Pliocene climate. Here, using a general circulation model and ice-sheet model, we determine the relative contribution of vegetation and soils, orography and ice, and CO2 to the Mid-Pliocene Arctic climate and cryosphere. Compared with pre-industrial, we find that increased Mid-Pliocene CO2 contributes 35 per cent, lower orography and ice-sheet feedbacks contribute 42 per cent, and vegetation changes contribute 23 per cent of Arctic temperature change. The simulatedMid-PlioceneGreenland ice sheet is substantially smaller thanthatofmodern,mostlydue to thehigherCO2.However, our simulations offuture climate change indicate that the same increase in CO2 is not sufficient tomelt the modern ice sheet substantially. We conclude that, although the Mid-Pliocene resembles the future in some respects, caremust be takenwhen interpreting it as an exact analogue due to vegetation and ice-sheet feedbacks. These act to intensify Mid-Pliocene Arctic climate change, and act on a longer time scale than the century scale usually addressed in future climate prediction. Text arctic cryosphere Arctic Climate change Greenland Ice Sheet Unknown Arctic Greenland |
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ftciteseerx |
language |
English |
topic |
Pliocene ice sheets cryosphere Greenland palaeoclimate |
spellingShingle |
Pliocene ice sheets cryosphere Greenland palaeoclimate The Arctic cryosphere in the Mid-Pliocene BRIDGE, School of Geographical Sciences, University of Bristol |
topic_facet |
Pliocene ice sheets cryosphere Greenland palaeoclimate |
description |
The Mid-Pliocene (ca 3 Myr ago) was a relatively warm period, with increased atmospheric CO2 relative to pre-industrial. It has therefore been highlighted as a possible palaeo-analogue for the future. However, changed vegetation patterns, orography and smaller ice sheets also influenced the Mid-Pliocene climate. Here, using a general circulation model and ice-sheet model, we determine the relative contribution of vegetation and soils, orography and ice, and CO2 to the Mid-Pliocene Arctic climate and cryosphere. Compared with pre-industrial, we find that increased Mid-Pliocene CO2 contributes 35 per cent, lower orography and ice-sheet feedbacks contribute 42 per cent, and vegetation changes contribute 23 per cent of Arctic temperature change. The simulatedMid-PlioceneGreenland ice sheet is substantially smaller thanthatofmodern,mostlydue to thehigherCO2.However, our simulations offuture climate change indicate that the same increase in CO2 is not sufficient tomelt the modern ice sheet substantially. We conclude that, although the Mid-Pliocene resembles the future in some respects, caremust be takenwhen interpreting it as an exact analogue due to vegetation and ice-sheet feedbacks. These act to intensify Mid-Pliocene Arctic climate change, and act on a longer time scale than the century scale usually addressed in future climate prediction. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
title |
The Arctic cryosphere in the Mid-Pliocene BRIDGE, School of Geographical Sciences, University of Bristol |
title_short |
The Arctic cryosphere in the Mid-Pliocene BRIDGE, School of Geographical Sciences, University of Bristol |
title_full |
The Arctic cryosphere in the Mid-Pliocene BRIDGE, School of Geographical Sciences, University of Bristol |
title_fullStr |
The Arctic cryosphere in the Mid-Pliocene BRIDGE, School of Geographical Sciences, University of Bristol |
title_full_unstemmed |
The Arctic cryosphere in the Mid-Pliocene BRIDGE, School of Geographical Sciences, University of Bristol |
title_sort |
arctic cryosphere in the mid-pliocene bridge, school of geographical sciences, university of bristol |
publishDate |
2008 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.7893 http://rsta.royalsocietypublishing.org/content/roypta/367/1886/49.full.pdf |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
arctic cryosphere Arctic Climate change Greenland Ice Sheet |
genre_facet |
arctic cryosphere Arctic Climate change Greenland Ice Sheet |
op_source |
http://rsta.royalsocietypublishing.org/content/roypta/367/1886/49.full.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.7893 http://rsta.royalsocietypublishing.org/content/roypta/367/1886/49.full.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766304721739448320 |