Abrupt wind regime changes in the North Atlantic Ocean during the past 30,000—60,000 years
12 pages, 5 figures, 2 tables. The inputs of higher plants in Blake Outer Ridge (subtropical western North Atlantic) during marine isotope stage 3 (MIS3) have been recorded at high resolution by quantification of C-23 – C-33 odd carbon numbered n-alkanes and C-20 – C-30 even carbon numbered n-alkan-...
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American Geophysical Union
2006
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ftcsic:oai:digital.csic.es:10261/11898 2024-02-11T10:04:19+01:00 Abrupt wind regime changes in the North Atlantic Ocean during the past 30,000—60,000 years López-Martínez, Constancia Grimalt, Joan O. Hoogakker, Babette Gruetzner, Jens Vautravers, Maryline J. McCave, I. Nicholas 2006-12-15 19968 bytes application/msword http://hdl.handle.net/10261/11898 https://doi.org/10.1029/2006PA001275 en eng American Geophysical Union http://dx.doi.org/10.1029/2006PA001275 Paleoceanography 21(4): 1-12 (2006) 0883-8305 http://hdl.handle.net/10261/11898 doi:10.1029/2006PA001275 none Wind regime Biomarkers Atlantic Ocean artículo http://purl.org/coar/resource_type/c_6501 2006 ftcsic https://doi.org/10.1029/2006PA001275 2024-01-16T09:22:10Z 12 pages, 5 figures, 2 tables. The inputs of higher plants in Blake Outer Ridge (subtropical western North Atlantic) during marine isotope stage 3 (MIS3) have been recorded at high resolution by quantification of C-23 – C-33 odd carbon numbered n-alkanes and C-20 – C-30 even carbon numbered n-alkan-1-ols in sediment sections of Ocean Drilling Program Site 1060. The changes of these proxies at this open marine site are mainly related to eolian inputs. Their concentrations and fluxes exhibit major abrupt variations that are correlated with Dansgaard/Oeschger (D/O) patterns in Greenland ice cores. The ratios between interstadials and stadials range between 2 and 9 times. The intense flux increases in the D/O stadials are linked to strong enhancements of the westerly wind regime at these subtropical latitudes during stadials. The observed variation was paralleled by changes in wind-blown dust and the polar circulation index in Greenland ice, which is in agreement with previously hypothesized atmospheric teleconnections between northern and middle-low latitudes of the Northern Hemisphere. The close correspondence between sedimentary and ice core proxies is evidence that crossings of the glacial climate thresholds involved major reorganizations of the troposphere. The observed large rise in higher plant biomarkers indicates that climate stabilization in the D/O stadial conditions led to main increases in wind intensity. This work was supported by the Pole-Ocean-Pole (EVK2-2000-00089) and Coordinated European Surface Ocean Paleoestimation (EVRII-2001-00009) projects funded by the European Union. Peer reviewed Article in Journal/Newspaper Greenland Greenland ice cores ice core North Atlantic Digital.CSIC (Spanish National Research Council) Greenland Paleoceanography 21 4 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Wind regime Biomarkers Atlantic Ocean |
spellingShingle |
Wind regime Biomarkers Atlantic Ocean López-Martínez, Constancia Grimalt, Joan O. Hoogakker, Babette Gruetzner, Jens Vautravers, Maryline J. McCave, I. Nicholas Abrupt wind regime changes in the North Atlantic Ocean during the past 30,000—60,000 years |
topic_facet |
Wind regime Biomarkers Atlantic Ocean |
description |
12 pages, 5 figures, 2 tables. The inputs of higher plants in Blake Outer Ridge (subtropical western North Atlantic) during marine isotope stage 3 (MIS3) have been recorded at high resolution by quantification of C-23 – C-33 odd carbon numbered n-alkanes and C-20 – C-30 even carbon numbered n-alkan-1-ols in sediment sections of Ocean Drilling Program Site 1060. The changes of these proxies at this open marine site are mainly related to eolian inputs. Their concentrations and fluxes exhibit major abrupt variations that are correlated with Dansgaard/Oeschger (D/O) patterns in Greenland ice cores. The ratios between interstadials and stadials range between 2 and 9 times. The intense flux increases in the D/O stadials are linked to strong enhancements of the westerly wind regime at these subtropical latitudes during stadials. The observed variation was paralleled by changes in wind-blown dust and the polar circulation index in Greenland ice, which is in agreement with previously hypothesized atmospheric teleconnections between northern and middle-low latitudes of the Northern Hemisphere. The close correspondence between sedimentary and ice core proxies is evidence that crossings of the glacial climate thresholds involved major reorganizations of the troposphere. The observed large rise in higher plant biomarkers indicates that climate stabilization in the D/O stadial conditions led to main increases in wind intensity. This work was supported by the Pole-Ocean-Pole (EVK2-2000-00089) and Coordinated European Surface Ocean Paleoestimation (EVRII-2001-00009) projects funded by the European Union. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
López-Martínez, Constancia Grimalt, Joan O. Hoogakker, Babette Gruetzner, Jens Vautravers, Maryline J. McCave, I. Nicholas |
author_facet |
López-Martínez, Constancia Grimalt, Joan O. Hoogakker, Babette Gruetzner, Jens Vautravers, Maryline J. McCave, I. Nicholas |
author_sort |
López-Martínez, Constancia |
title |
Abrupt wind regime changes in the North Atlantic Ocean during the past 30,000—60,000 years |
title_short |
Abrupt wind regime changes in the North Atlantic Ocean during the past 30,000—60,000 years |
title_full |
Abrupt wind regime changes in the North Atlantic Ocean during the past 30,000—60,000 years |
title_fullStr |
Abrupt wind regime changes in the North Atlantic Ocean during the past 30,000—60,000 years |
title_full_unstemmed |
Abrupt wind regime changes in the North Atlantic Ocean during the past 30,000—60,000 years |
title_sort |
abrupt wind regime changes in the north atlantic ocean during the past 30,000—60,000 years |
publisher |
American Geophysical Union |
publishDate |
2006 |
url |
http://hdl.handle.net/10261/11898 https://doi.org/10.1029/2006PA001275 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores ice core North Atlantic |
genre_facet |
Greenland Greenland ice cores ice core North Atlantic |
op_relation |
http://dx.doi.org/10.1029/2006PA001275 Paleoceanography 21(4): 1-12 (2006) 0883-8305 http://hdl.handle.net/10261/11898 doi:10.1029/2006PA001275 |
op_rights |
none |
op_doi |
https://doi.org/10.1029/2006PA001275 |
container_title |
Paleoceanography |
container_volume |
21 |
container_issue |
4 |
_version_ |
1790600893437050880 |