The relative role of oceanic heat transport and orography on glacial climate
During the Last Glacial Maximum, the Earths orography and oceanic heat transport contribute to a cooling in the North Atlantic. By using an atmospheric general circulation model of intermediate complexity, we investigate the sensitivity of the atmospheric temperature and circulation during glacial c...
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ftawi:oai:epic.awi.de:12417 2023-09-05T13:20:17+02:00 The relative role of oceanic heat transport and orography on glacial climate Romanova, V. Lohmann, Gerrit Grosfeld, Klaus Butzin, Martin 2006 application/pdf https://epic.awi.de/id/eprint/12417/ https://epic.awi.de/id/eprint/12417/1/Rom2005a.pdf https://doi.org/10.1016/j.quascirev.2005.07.007 https://hdl.handle.net/10013/epic.22842 https://hdl.handle.net/10013/epic.22842.d001 unknown https://epic.awi.de/id/eprint/12417/1/Rom2005a.pdf https://hdl.handle.net/10013/epic.22842.d001 Romanova, V. , Lohmann, G. orcid:0000-0003-2089-733X , Grosfeld, K. orcid:0000-0001-5936-179X and Butzin, M. orcid:0000-0002-9275-7304 (2006) The relative role of oceanic heat transport and orography on glacial climate , Quaternary science reviews, 25 (7), pp. 832-845 . doi:10.1016/j.quascirev.2005.07.007 <https://doi.org/10.1016/j.quascirev.2005.07.007> , hdl:10013/epic.22842 EPIC3Quaternary science reviews, 25(7), pp. 832-845 Article isiRev 2006 ftawi https://doi.org/10.1016/j.quascirev.2005.07.007 2023-08-22T19:49:55Z During the Last Glacial Maximum, the Earths orography and oceanic heat transport contribute to a cooling in the North Atlantic. By using an atmospheric general circulation model of intermediate complexity, we investigate the sensitivity of the atmospheric temperature and circulation during glacial climate, focussing on the impact of the orography and different oceanicheat transports. The results show a strong dependence of the glacial Northern Hemisphere circulation pattern to the changed orography. The blocking effect of the elevated orography dueto the Laurentide Ice Sheet over the North American continent forces a deflection of westerlies, their enhancement and a southward displacement over the Atlantic. Independently, the glacial climate is influenced by the oceanic heat transport. The reduced oceanic heat transport on theglacial climate shows a 20-40% contribution for the total cooling relative to present-day in theNorth Atlantic and polar regions. Finally, we find that the altered orography in the Northern Hemisphere and different oceanic heat transports result in a changed hydrological cycle, areduction of the Hadley circulation and a southward shift of the Intertropical Convergence Zone in the boreal winter during glacial times. Article in Journal/Newspaper Ice Sheet North Atlantic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Quaternary Science Reviews 25 7-8 832 845 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
During the Last Glacial Maximum, the Earths orography and oceanic heat transport contribute to a cooling in the North Atlantic. By using an atmospheric general circulation model of intermediate complexity, we investigate the sensitivity of the atmospheric temperature and circulation during glacial climate, focussing on the impact of the orography and different oceanicheat transports. The results show a strong dependence of the glacial Northern Hemisphere circulation pattern to the changed orography. The blocking effect of the elevated orography dueto the Laurentide Ice Sheet over the North American continent forces a deflection of westerlies, their enhancement and a southward displacement over the Atlantic. Independently, the glacial climate is influenced by the oceanic heat transport. The reduced oceanic heat transport on theglacial climate shows a 20-40% contribution for the total cooling relative to present-day in theNorth Atlantic and polar regions. Finally, we find that the altered orography in the Northern Hemisphere and different oceanic heat transports result in a changed hydrological cycle, areduction of the Hadley circulation and a southward shift of the Intertropical Convergence Zone in the boreal winter during glacial times. |
format |
Article in Journal/Newspaper |
author |
Romanova, V. Lohmann, Gerrit Grosfeld, Klaus Butzin, Martin |
spellingShingle |
Romanova, V. Lohmann, Gerrit Grosfeld, Klaus Butzin, Martin The relative role of oceanic heat transport and orography on glacial climate |
author_facet |
Romanova, V. Lohmann, Gerrit Grosfeld, Klaus Butzin, Martin |
author_sort |
Romanova, V. |
title |
The relative role of oceanic heat transport and orography on glacial climate |
title_short |
The relative role of oceanic heat transport and orography on glacial climate |
title_full |
The relative role of oceanic heat transport and orography on glacial climate |
title_fullStr |
The relative role of oceanic heat transport and orography on glacial climate |
title_full_unstemmed |
The relative role of oceanic heat transport and orography on glacial climate |
title_sort |
relative role of oceanic heat transport and orography on glacial climate |
publishDate |
2006 |
url |
https://epic.awi.de/id/eprint/12417/ https://epic.awi.de/id/eprint/12417/1/Rom2005a.pdf https://doi.org/10.1016/j.quascirev.2005.07.007 https://hdl.handle.net/10013/epic.22842 https://hdl.handle.net/10013/epic.22842.d001 |
genre |
Ice Sheet North Atlantic |
genre_facet |
Ice Sheet North Atlantic |
op_source |
EPIC3Quaternary science reviews, 25(7), pp. 832-845 |
op_relation |
https://epic.awi.de/id/eprint/12417/1/Rom2005a.pdf https://hdl.handle.net/10013/epic.22842.d001 Romanova, V. , Lohmann, G. orcid:0000-0003-2089-733X , Grosfeld, K. orcid:0000-0001-5936-179X and Butzin, M. orcid:0000-0002-9275-7304 (2006) The relative role of oceanic heat transport and orography on glacial climate , Quaternary science reviews, 25 (7), pp. 832-845 . doi:10.1016/j.quascirev.2005.07.007 <https://doi.org/10.1016/j.quascirev.2005.07.007> , hdl:10013/epic.22842 |
op_doi |
https://doi.org/10.1016/j.quascirev.2005.07.007 |
container_title |
Quaternary Science Reviews |
container_volume |
25 |
container_issue |
7-8 |
container_start_page |
832 |
op_container_end_page |
845 |
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1776200986413498368 |