Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years
Despite the multiple impacts of mineral aerosols on global and regional climate and the primary climatic control on atmospheric dust fluxes, dust-climate feedbacks remain poorly constrained, particularly at submillennial time scales, hampering regional and global climate models. We reconstruct Sahar...
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ftarchimer:oai:archimer.ifremer.fr:81426 2023-05-15T17:29:29+02:00 Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years Cruz, Juncal A. Mcdermott, Frank Turrero, María J. Edwards, R. Lawrence Martín-chivelet, Javier 2021-06 application/pdf https://archimer.ifremer.fr/doc/00702/81426/85826.pdf https://archimer.ifremer.fr/doc/00702/81426/85827.pdf https://archimer.ifremer.fr/doc/00702/81426/85828.xlsx https://doi.org/10.1126/sciadv.abe6102 https://archimer.ifremer.fr/doc/00702/81426/ eng eng American Association for the Advancement of Science (AAAS) https://archimer.ifremer.fr/doc/00702/81426/85826.pdf https://archimer.ifremer.fr/doc/00702/81426/85827.pdf https://archimer.ifremer.fr/doc/00702/81426/85828.xlsx doi:10.1126/sciadv.abe6102 https://archimer.ifremer.fr/doc/00702/81426/ info:eu-repo/semantics/openAccess restricted use Science Advances (2375-2548) (American Association for the Advancement of Science (AAAS)), 2021-06 , Vol. 7 , N. 26 , P. eabe6102 (12p.) text Publication info:eu-repo/semantics/article 2021 ftarchimer https://doi.org/10.1126/sciadv.abe6102 2021-10-05T22:48:30Z Despite the multiple impacts of mineral aerosols on global and regional climate and the primary climatic control on atmospheric dust fluxes, dust-climate feedbacks remain poorly constrained, particularly at submillennial time scales, hampering regional and global climate models. We reconstruct Saharan dust fluxes over Western Europe for the last 5000 years, by means of speleothem strontium isotope ratios (87Sr/86Sr) and karst modeling. The record reveals a long-term increase in Saharan dust flux, consistent with progressive North Africa aridification and strengthening of Northern Hemisphere latitudinal climatic gradients. On shorter, centennial to millennial scales, it shows broad variations in dust fluxes, in tune with North Atlantic ocean-atmosphere patterns and with monsoonal variability. Dust fluxes rapidly increase before (and peaks at) Late Holocene multidecadal- to century-scale cold climate events, including those around 4200, 2800, and 1500 years before present, suggesting the operation of previously unknown strong dust-climate negative feedbacks preceding these episodes. Article in Journal/Newspaper North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Science Advances 7 26 eabe6102 |
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Open Polar |
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Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
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ftarchimer |
language |
English |
description |
Despite the multiple impacts of mineral aerosols on global and regional climate and the primary climatic control on atmospheric dust fluxes, dust-climate feedbacks remain poorly constrained, particularly at submillennial time scales, hampering regional and global climate models. We reconstruct Saharan dust fluxes over Western Europe for the last 5000 years, by means of speleothem strontium isotope ratios (87Sr/86Sr) and karst modeling. The record reveals a long-term increase in Saharan dust flux, consistent with progressive North Africa aridification and strengthening of Northern Hemisphere latitudinal climatic gradients. On shorter, centennial to millennial scales, it shows broad variations in dust fluxes, in tune with North Atlantic ocean-atmosphere patterns and with monsoonal variability. Dust fluxes rapidly increase before (and peaks at) Late Holocene multidecadal- to century-scale cold climate events, including those around 4200, 2800, and 1500 years before present, suggesting the operation of previously unknown strong dust-climate negative feedbacks preceding these episodes. |
format |
Article in Journal/Newspaper |
author |
Cruz, Juncal A. Mcdermott, Frank Turrero, María J. Edwards, R. Lawrence Martín-chivelet, Javier |
spellingShingle |
Cruz, Juncal A. Mcdermott, Frank Turrero, María J. Edwards, R. Lawrence Martín-chivelet, Javier Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years |
author_facet |
Cruz, Juncal A. Mcdermott, Frank Turrero, María J. Edwards, R. Lawrence Martín-chivelet, Javier |
author_sort |
Cruz, Juncal A. |
title |
Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years |
title_short |
Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years |
title_full |
Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years |
title_fullStr |
Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years |
title_full_unstemmed |
Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years |
title_sort |
strong links between saharan dust fluxes, monsoon strength, and north atlantic climate during the last 5000 years |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2021 |
url |
https://archimer.ifremer.fr/doc/00702/81426/85826.pdf https://archimer.ifremer.fr/doc/00702/81426/85827.pdf https://archimer.ifremer.fr/doc/00702/81426/85828.xlsx https://doi.org/10.1126/sciadv.abe6102 https://archimer.ifremer.fr/doc/00702/81426/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Science Advances (2375-2548) (American Association for the Advancement of Science (AAAS)), 2021-06 , Vol. 7 , N. 26 , P. eabe6102 (12p.) |
op_relation |
https://archimer.ifremer.fr/doc/00702/81426/85826.pdf https://archimer.ifremer.fr/doc/00702/81426/85827.pdf https://archimer.ifremer.fr/doc/00702/81426/85828.xlsx doi:10.1126/sciadv.abe6102 https://archimer.ifremer.fr/doc/00702/81426/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1126/sciadv.abe6102 |
container_title |
Science Advances |
container_volume |
7 |
container_issue |
26 |
container_start_page |
eabe6102 |
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1766123618811510784 |