Tropical Rains Controlling Deposition of Saharan Dust Across the North Atlantic Ocean
Mineral dust plays an important role in the atmospheric radiation budget as well as in the ocean carbon cycle through fertilization and by ballasting of settling organic matter. However, observational records of open‐ocean dust deposition are sparse. Here, we present the spatial and temporal evoluti...
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ftawi:oai:epic.awi.de:51432 2024-09-15T18:21:46+00:00 Tropical Rains Controlling Deposition of Saharan Dust Across the North Atlantic Ocean van der Does, Michèlle Brummer, Geert‐Jan A. van Crimpen, Fleur C. J. Korte, Laura F. Mahowald, Natalie M. Merkel, Ute Yu, Hongbin Zuidema, Paquita Stuut, Jan‐Berend W. 2020 https://epic.awi.de/id/eprint/51432/ https://doi.org/10.1029/2019GL086867 https://hdl.handle.net/10013/epic.9aa083b8-696b-4b23-b0a5-397388499b68 unknown American Geophysical Union van der Does, M. orcid:0000-0002-5326-6078 , Brummer, G. A. , van Crimpen, F. C. J. , Korte, L. F. , Mahowald, N. M. , Merkel, U. , Yu, H. , Zuidema, P. and Stuut, J. W. (2020) Tropical Rains Controlling Deposition of Saharan Dust Across the North Atlantic Ocean , Geophysical Research Letters, 47 (5) . doi:10.1029/2019GL086867 <https://doi.org/10.1029/2019GL086867> , hdl:10013/epic.9aa083b8-696b-4b23-b0a5-397388499b68 EPIC3Geophysical Research Letters, American Geophysical Union, 47(5), ISSN: 0094-8276 Article isiRev info:eu-repo/semantics/article 2020 ftawi https://doi.org/10.1029/2019GL086867 2024-06-24T04:23:24Z Mineral dust plays an important role in the atmospheric radiation budget as well as in the ocean carbon cycle through fertilization and by ballasting of settling organic matter. However, observational records of open‐ocean dust deposition are sparse. Here, we present the spatial and temporal evolution of Saharan dust deposition over 2 years from marine sediment traps across the North Atlantic, directly below the core of the Saharan dust plume, with highest dust fluxes observed in summer. We combined the observed deposition fluxes with model simulations and satellite observations and argue that dust deposition in the Atlantic is predominantly controlled by summer rains. The dominant depositional pathway changes from wet deposition in summer to dry deposition in winter. Wet deposition has previously been suggested to increase the release of dust‐derived nutrients and their bioavailability, which may be a key contributor to surface‐ocean productivity in remote and oligotrophic parts of the oceans. Article in Journal/Newspaper North Atlantic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Geophysical Research Letters 47 5 |
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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 |
Mineral dust plays an important role in the atmospheric radiation budget as well as in the ocean carbon cycle through fertilization and by ballasting of settling organic matter. However, observational records of open‐ocean dust deposition are sparse. Here, we present the spatial and temporal evolution of Saharan dust deposition over 2 years from marine sediment traps across the North Atlantic, directly below the core of the Saharan dust plume, with highest dust fluxes observed in summer. We combined the observed deposition fluxes with model simulations and satellite observations and argue that dust deposition in the Atlantic is predominantly controlled by summer rains. The dominant depositional pathway changes from wet deposition in summer to dry deposition in winter. Wet deposition has previously been suggested to increase the release of dust‐derived nutrients and their bioavailability, which may be a key contributor to surface‐ocean productivity in remote and oligotrophic parts of the oceans. |
format |
Article in Journal/Newspaper |
author |
van der Does, Michèlle Brummer, Geert‐Jan A. van Crimpen, Fleur C. J. Korte, Laura F. Mahowald, Natalie M. Merkel, Ute Yu, Hongbin Zuidema, Paquita Stuut, Jan‐Berend W. |
spellingShingle |
van der Does, Michèlle Brummer, Geert‐Jan A. van Crimpen, Fleur C. J. Korte, Laura F. Mahowald, Natalie M. Merkel, Ute Yu, Hongbin Zuidema, Paquita Stuut, Jan‐Berend W. Tropical Rains Controlling Deposition of Saharan Dust Across the North Atlantic Ocean |
author_facet |
van der Does, Michèlle Brummer, Geert‐Jan A. van Crimpen, Fleur C. J. Korte, Laura F. Mahowald, Natalie M. Merkel, Ute Yu, Hongbin Zuidema, Paquita Stuut, Jan‐Berend W. |
author_sort |
van der Does, Michèlle |
title |
Tropical Rains Controlling Deposition of Saharan Dust Across the North Atlantic Ocean |
title_short |
Tropical Rains Controlling Deposition of Saharan Dust Across the North Atlantic Ocean |
title_full |
Tropical Rains Controlling Deposition of Saharan Dust Across the North Atlantic Ocean |
title_fullStr |
Tropical Rains Controlling Deposition of Saharan Dust Across the North Atlantic Ocean |
title_full_unstemmed |
Tropical Rains Controlling Deposition of Saharan Dust Across the North Atlantic Ocean |
title_sort |
tropical rains controlling deposition of saharan dust across the north atlantic ocean |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/51432/ https://doi.org/10.1029/2019GL086867 https://hdl.handle.net/10013/epic.9aa083b8-696b-4b23-b0a5-397388499b68 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
EPIC3Geophysical Research Letters, American Geophysical Union, 47(5), ISSN: 0094-8276 |
op_relation |
van der Does, M. orcid:0000-0002-5326-6078 , Brummer, G. A. , van Crimpen, F. C. J. , Korte, L. F. , Mahowald, N. M. , Merkel, U. , Yu, H. , Zuidema, P. and Stuut, J. W. (2020) Tropical Rains Controlling Deposition of Saharan Dust Across the North Atlantic Ocean , Geophysical Research Letters, 47 (5) . doi:10.1029/2019GL086867 <https://doi.org/10.1029/2019GL086867> , hdl:10013/epic.9aa083b8-696b-4b23-b0a5-397388499b68 |
op_doi |
https://doi.org/10.1029/2019GL086867 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
5 |
_version_ |
1810460679345274880 |