Impact of a Tethyan circumglobal passage on ocean heat transport and “equable” climates
[1] The presence of low-latitude circumglobal passage from the late Jurassic (160 Ma) through the Miocene (14 Ma) provides a possible mechanism for increased poleward ocean heat transport during periods of warm climate and may help explain low meridional temperature gradients of the past. Experiment...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.524.6071 2023-05-15T16:02:32+02:00 Impact of a Tethyan circumglobal passage on ocean heat transport and “equable” climates R. M. Hotinski J. R. Toggweiler The Pennsylvania State University CiteSeerX Archives 2003 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.524.6071 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.524.6071 Metadata may be used without restrictions as long as the oai identifier remains attached to it. https://www.gfdl.noaa.gov/bibliography/related_files/hotinski0301.pdf anoxia Permian extinctions paleoceanography stagnant circulation text 2003 ftciteseerx 2016-01-08T10:18:04Z [1] The presence of low-latitude circumglobal passage from the late Jurassic (160 Ma) through the Miocene (14 Ma) provides a possible mechanism for increased poleward ocean heat transport during periods of warm climate and may help explain low meridional temperature gradients of the past. Experiments using an ocean general circulation model (GCM) with an energy-balance atmosphere and idealized bathymetry reveal that, like the modern Drake Passage, a circumglobal Tethyan Passage might have induced high rates of wind-driven upwelling of relatively cold and deep water, but at low latitudes. With no change in radiative forcing, a low-latitude circumglobal passage increases simulated northern high-latitude temperatures by 3–7C, while tropical temperatures cool by up to 2C relative to a scenario with solid meridional boundaries. Combining this mechanism of heat transport with increased radiative forcing allows substantial warming of northern high latitudes by 7–11C, while tropical temperatures remain within 3C of present-day temperatures. INDEX Text Drake Passage Unknown Drake Passage |
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Unknown |
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ftciteseerx |
language |
English |
topic |
anoxia Permian extinctions paleoceanography stagnant circulation |
spellingShingle |
anoxia Permian extinctions paleoceanography stagnant circulation R. M. Hotinski J. R. Toggweiler Impact of a Tethyan circumglobal passage on ocean heat transport and “equable” climates |
topic_facet |
anoxia Permian extinctions paleoceanography stagnant circulation |
description |
[1] The presence of low-latitude circumglobal passage from the late Jurassic (160 Ma) through the Miocene (14 Ma) provides a possible mechanism for increased poleward ocean heat transport during periods of warm climate and may help explain low meridional temperature gradients of the past. Experiments using an ocean general circulation model (GCM) with an energy-balance atmosphere and idealized bathymetry reveal that, like the modern Drake Passage, a circumglobal Tethyan Passage might have induced high rates of wind-driven upwelling of relatively cold and deep water, but at low latitudes. With no change in radiative forcing, a low-latitude circumglobal passage increases simulated northern high-latitude temperatures by 3–7C, while tropical temperatures cool by up to 2C relative to a scenario with solid meridional boundaries. Combining this mechanism of heat transport with increased radiative forcing allows substantial warming of northern high latitudes by 7–11C, while tropical temperatures remain within 3C of present-day temperatures. INDEX |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
R. M. Hotinski J. R. Toggweiler |
author_facet |
R. M. Hotinski J. R. Toggweiler |
author_sort |
R. M. Hotinski |
title |
Impact of a Tethyan circumglobal passage on ocean heat transport and “equable” climates |
title_short |
Impact of a Tethyan circumglobal passage on ocean heat transport and “equable” climates |
title_full |
Impact of a Tethyan circumglobal passage on ocean heat transport and “equable” climates |
title_fullStr |
Impact of a Tethyan circumglobal passage on ocean heat transport and “equable” climates |
title_full_unstemmed |
Impact of a Tethyan circumglobal passage on ocean heat transport and “equable” climates |
title_sort |
impact of a tethyan circumglobal passage on ocean heat transport and “equable” climates |
publishDate |
2003 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.524.6071 |
geographic |
Drake Passage |
geographic_facet |
Drake Passage |
genre |
Drake Passage |
genre_facet |
Drake Passage |
op_source |
https://www.gfdl.noaa.gov/bibliography/related_files/hotinski0301.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.524.6071 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766398198461497344 |