A Short Circuit in Thermohaline Circulation: A Cause for Northern Hemisphere Glaciation?
The cause of Northern Hemisphere glaciation about 3 million years ago remains uncertain. Closing the Panamanian Isthmus increased thermohaline circulation and enhanced moisture supply to high latitudes, but the accompanying heat would have inhibited ice growth. One possible solution is that enhanced...
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Language: | English |
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American Association for the Advancement of Science (AAAS)
1998
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Online Access: | http://dx.doi.org/10.1126/science.282.5388.436 https://www.science.org/doi/pdf/10.1126/science.282.5388.436 |
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craaas:10.1126/science.282.5388.436 2024-06-23T07:45:06+00:00 A Short Circuit in Thermohaline Circulation: A Cause for Northern Hemisphere Glaciation? Driscoll, N. W. Haug, G. H. 1998 http://dx.doi.org/10.1126/science.282.5388.436 https://www.science.org/doi/pdf/10.1126/science.282.5388.436 en eng American Association for the Advancement of Science (AAAS) Science volume 282, issue 5388, page 436-438 ISSN 0036-8075 1095-9203 journal-article 1998 craaas https://doi.org/10.1126/science.282.5388.436 2024-06-06T04:00:54Z The cause of Northern Hemisphere glaciation about 3 million years ago remains uncertain. Closing the Panamanian Isthmus increased thermohaline circulation and enhanced moisture supply to high latitudes, but the accompanying heat would have inhibited ice growth. One possible solution is that enhanced moisture transported to Eurasia also enhanced freshwater delivery to the Arctic via Siberian rivers. Freshwater input to the Arctic would facilitate sea ice formation, increase the albedo, and isolate the high heat capacity of the ocean from the atmosphere. It would also act as a negative feedback on the efficiency of the “conveyor belt” heat pump. Article in Journal/Newspaper albedo Arctic Sea ice AAAS Resource Center (American Association for the Advancement of Science) Arctic Science 282 5388 436 438 |
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Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
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craaas |
language |
English |
description |
The cause of Northern Hemisphere glaciation about 3 million years ago remains uncertain. Closing the Panamanian Isthmus increased thermohaline circulation and enhanced moisture supply to high latitudes, but the accompanying heat would have inhibited ice growth. One possible solution is that enhanced moisture transported to Eurasia also enhanced freshwater delivery to the Arctic via Siberian rivers. Freshwater input to the Arctic would facilitate sea ice formation, increase the albedo, and isolate the high heat capacity of the ocean from the atmosphere. It would also act as a negative feedback on the efficiency of the “conveyor belt” heat pump. |
format |
Article in Journal/Newspaper |
author |
Driscoll, N. W. Haug, G. H. |
spellingShingle |
Driscoll, N. W. Haug, G. H. A Short Circuit in Thermohaline Circulation: A Cause for Northern Hemisphere Glaciation? |
author_facet |
Driscoll, N. W. Haug, G. H. |
author_sort |
Driscoll, N. W. |
title |
A Short Circuit in Thermohaline Circulation: A Cause for Northern Hemisphere Glaciation? |
title_short |
A Short Circuit in Thermohaline Circulation: A Cause for Northern Hemisphere Glaciation? |
title_full |
A Short Circuit in Thermohaline Circulation: A Cause for Northern Hemisphere Glaciation? |
title_fullStr |
A Short Circuit in Thermohaline Circulation: A Cause for Northern Hemisphere Glaciation? |
title_full_unstemmed |
A Short Circuit in Thermohaline Circulation: A Cause for Northern Hemisphere Glaciation? |
title_sort |
short circuit in thermohaline circulation: a cause for northern hemisphere glaciation? |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1998 |
url |
http://dx.doi.org/10.1126/science.282.5388.436 https://www.science.org/doi/pdf/10.1126/science.282.5388.436 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic Sea ice |
genre_facet |
albedo Arctic Sea ice |
op_source |
Science volume 282, issue 5388, page 436-438 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.282.5388.436 |
container_title |
Science |
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282 |
container_issue |
5388 |
container_start_page |
436 |
op_container_end_page |
438 |
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1802651368297594880 |