NAO-induced long-term changes in nutrient supply to the surface waters of the North Atlantic
Since the late 1980s extensive observational campaigns like the Joint Global Ocean Flux Study (JGOFS) and the World Ocean Circulation Experiment (WOCE) have helped to considerably improve our understanding of marine biogeochemistry. By chance, this period corresponded to a phase of a positive swing...
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Language: | English |
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AGU (American Geophysical Union)
2001
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Online Access: | https://oceanrep.geomar.de/id/eprint/2281/ https://oceanrep.geomar.de/id/eprint/2281/1/Oschlies-2001-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2000GL012328 |
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ftoceanrep:oai:oceanrep.geomar.de:2281 2024-09-30T14:39:13+00:00 NAO-induced long-term changes in nutrient supply to the surface waters of the North Atlantic Oschlies, Andreas 2001 text https://oceanrep.geomar.de/id/eprint/2281/ https://oceanrep.geomar.de/id/eprint/2281/1/Oschlies-2001-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2000GL012328 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/2281/1/Oschlies-2001-Geophysical_Research_Letters.pdf Oschlies, A. (2001) NAO-induced long-term changes in nutrient supply to the surface waters of the North Atlantic. Open Access Geophysical Research Letters, 28 . pp. 1751-1754. DOI 10.1029/2000GL012328 <https://doi.org/10.1029/2000GL012328>. doi:10.1029/2000GL012328 info:eu-repo/semantics/openAccess Article PeerReviewed 2001 ftoceanrep https://doi.org/10.1029/2000GL012328 2024-09-04T05:04:40Z Since the late 1980s extensive observational campaigns like the Joint Global Ocean Flux Study (JGOFS) and the World Ocean Circulation Experiment (WOCE) have helped to considerably improve our understanding of marine biogeochemistry. By chance, this period corresponded to a phase of a positive swing of the North Atlantic Oscillation (NAO), whereas earlier studies in the North Atlantic generally took place during more negative phases of the NAO (Figure 1). This study demonstrates by means of a coupled ecosystem-circulation model that the long-term change in the NAO between the 1960s and 1990s may have induced significant regional changes in the upper ocean's nutrient supply. These include a decrease of nitrate supply by about 30% near Bermuda and in mid-latitudes, and a simultaneous 60% increase in the upwelling region off West Africa. The results suggest that a synthesis of biogeochemical observations taken during the past decades must take into account NAO-related climate variability. Article in Journal/Newspaper North Atlantic North Atlantic oscillation OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Geophysical Research Letters 28 9 1751 1754 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Since the late 1980s extensive observational campaigns like the Joint Global Ocean Flux Study (JGOFS) and the World Ocean Circulation Experiment (WOCE) have helped to considerably improve our understanding of marine biogeochemistry. By chance, this period corresponded to a phase of a positive swing of the North Atlantic Oscillation (NAO), whereas earlier studies in the North Atlantic generally took place during more negative phases of the NAO (Figure 1). This study demonstrates by means of a coupled ecosystem-circulation model that the long-term change in the NAO between the 1960s and 1990s may have induced significant regional changes in the upper ocean's nutrient supply. These include a decrease of nitrate supply by about 30% near Bermuda and in mid-latitudes, and a simultaneous 60% increase in the upwelling region off West Africa. The results suggest that a synthesis of biogeochemical observations taken during the past decades must take into account NAO-related climate variability. |
format |
Article in Journal/Newspaper |
author |
Oschlies, Andreas |
spellingShingle |
Oschlies, Andreas NAO-induced long-term changes in nutrient supply to the surface waters of the North Atlantic |
author_facet |
Oschlies, Andreas |
author_sort |
Oschlies, Andreas |
title |
NAO-induced long-term changes in nutrient supply to the surface waters of the North Atlantic |
title_short |
NAO-induced long-term changes in nutrient supply to the surface waters of the North Atlantic |
title_full |
NAO-induced long-term changes in nutrient supply to the surface waters of the North Atlantic |
title_fullStr |
NAO-induced long-term changes in nutrient supply to the surface waters of the North Atlantic |
title_full_unstemmed |
NAO-induced long-term changes in nutrient supply to the surface waters of the North Atlantic |
title_sort |
nao-induced long-term changes in nutrient supply to the surface waters of the north atlantic |
publisher |
AGU (American Geophysical Union) |
publishDate |
2001 |
url |
https://oceanrep.geomar.de/id/eprint/2281/ https://oceanrep.geomar.de/id/eprint/2281/1/Oschlies-2001-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2000GL012328 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
https://oceanrep.geomar.de/id/eprint/2281/1/Oschlies-2001-Geophysical_Research_Letters.pdf Oschlies, A. (2001) NAO-induced long-term changes in nutrient supply to the surface waters of the North Atlantic. Open Access Geophysical Research Letters, 28 . pp. 1751-1754. DOI 10.1029/2000GL012328 <https://doi.org/10.1029/2000GL012328>. doi:10.1029/2000GL012328 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2000GL012328 |
container_title |
Geophysical Research Letters |
container_volume |
28 |
container_issue |
9 |
container_start_page |
1751 |
op_container_end_page |
1754 |
_version_ |
1811641743592914944 |