Rapid Changes in the Hydrologic Cycle of the Tropical Atlantic During the Last Glacial
Sedimentary time series of color reflectance and major element chemistry from the anoxic Cariaco Basin off the coast of northern Venezuela record large and abrupt shifts in the hydrologic cycle of the tropical Atlantic during the past 90,000 years. Marine productivity maxima and increased precipitat...
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Language: | English |
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American Association for the Advancement of Science (AAAS)
2000
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Online Access: | http://dx.doi.org/10.1126/science.290.5498.1947 https://www.science.org/doi/pdf/10.1126/science.290.5498.1947 |
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craaas:10.1126/science.290.5498.1947 2024-09-30T14:35:52+00:00 Rapid Changes in the Hydrologic Cycle of the Tropical Atlantic During the Last Glacial Peterson, Larry C. Haug, Gerald H. Hughen, Konrad A. Röhl, Ursula 2000 http://dx.doi.org/10.1126/science.290.5498.1947 https://www.science.org/doi/pdf/10.1126/science.290.5498.1947 en eng American Association for the Advancement of Science (AAAS) Science volume 290, issue 5498, page 1947-1951 ISSN 0036-8075 1095-9203 journal-article 2000 craaas https://doi.org/10.1126/science.290.5498.1947 2024-09-12T04:01:37Z Sedimentary time series of color reflectance and major element chemistry from the anoxic Cariaco Basin off the coast of northern Venezuela record large and abrupt shifts in the hydrologic cycle of the tropical Atlantic during the past 90,000 years. Marine productivity maxima and increased precipitation and riverine discharge from northern South America are closely linked to interstadial (warm) climate events of marine isotope stage 3, as recorded in Greenland ice cores. Increased precipitation at this latitude during interstadials suggests the potential for greater moisture export from the Atlantic to Pacific, which could have affected the salinity balance of the Atlantic and increased thermohaline heat transport to high northern latitudes. This supports the notion that tropical feedbacks played an important role in modulating global climate during the last glacial period. Article in Journal/Newspaper Greenland Greenland ice cores AAAS Resource Center (American Association for the Advancement of Science) Greenland Pacific Science 290 5498 1947 1951 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Sedimentary time series of color reflectance and major element chemistry from the anoxic Cariaco Basin off the coast of northern Venezuela record large and abrupt shifts in the hydrologic cycle of the tropical Atlantic during the past 90,000 years. Marine productivity maxima and increased precipitation and riverine discharge from northern South America are closely linked to interstadial (warm) climate events of marine isotope stage 3, as recorded in Greenland ice cores. Increased precipitation at this latitude during interstadials suggests the potential for greater moisture export from the Atlantic to Pacific, which could have affected the salinity balance of the Atlantic and increased thermohaline heat transport to high northern latitudes. This supports the notion that tropical feedbacks played an important role in modulating global climate during the last glacial period. |
format |
Article in Journal/Newspaper |
author |
Peterson, Larry C. Haug, Gerald H. Hughen, Konrad A. Röhl, Ursula |
spellingShingle |
Peterson, Larry C. Haug, Gerald H. Hughen, Konrad A. Röhl, Ursula Rapid Changes in the Hydrologic Cycle of the Tropical Atlantic During the Last Glacial |
author_facet |
Peterson, Larry C. Haug, Gerald H. Hughen, Konrad A. Röhl, Ursula |
author_sort |
Peterson, Larry C. |
title |
Rapid Changes in the Hydrologic Cycle of the Tropical Atlantic During the Last Glacial |
title_short |
Rapid Changes in the Hydrologic Cycle of the Tropical Atlantic During the Last Glacial |
title_full |
Rapid Changes in the Hydrologic Cycle of the Tropical Atlantic During the Last Glacial |
title_fullStr |
Rapid Changes in the Hydrologic Cycle of the Tropical Atlantic During the Last Glacial |
title_full_unstemmed |
Rapid Changes in the Hydrologic Cycle of the Tropical Atlantic During the Last Glacial |
title_sort |
rapid changes in the hydrologic cycle of the tropical atlantic during the last glacial |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2000 |
url |
http://dx.doi.org/10.1126/science.290.5498.1947 https://www.science.org/doi/pdf/10.1126/science.290.5498.1947 |
geographic |
Greenland Pacific |
geographic_facet |
Greenland Pacific |
genre |
Greenland Greenland ice cores |
genre_facet |
Greenland Greenland ice cores |
op_source |
Science volume 290, issue 5498, page 1947-1951 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.290.5498.1947 |
container_title |
Science |
container_volume |
290 |
container_issue |
5498 |
container_start_page |
1947 |
op_container_end_page |
1951 |
_version_ |
1811639093051785216 |