Synoptic-scale analysis of mechanisms driving surface chlorophyll dynamics in the North Atlantic
Several hypotheses have been proposed for the onset of the spring phytoplankton bloom in the North Atlantic. Our main objective is to examine which bottom-up processes can best predict the annual increase in surface phytoplankton concentration in the North Atlantic by applying novel phenology algori...
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ftdoajarticles:oai:doaj.org/article:183d0130377d47e58d76dbbe5e553347 2023-05-15T17:26:01+02:00 Synoptic-scale analysis of mechanisms driving surface chlorophyll dynamics in the North Atlantic A. S. A. Ferreira H. Hátún F. Counillon M. R. Payne A. W. Visser 2015-06-01T00:00:00Z https://doi.org/10.5194/bg-12-3641-2015 https://doaj.org/article/183d0130377d47e58d76dbbe5e553347 EN eng Copernicus Publications https://www.biogeosciences.net/12/3641/2015/bg-12-3641-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-12-3641-2015 1726-4170 1726-4189 https://doaj.org/article/183d0130377d47e58d76dbbe5e553347 Biogeosciences, Vol 12, Pp 3641-3653 (2015) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2015 ftdoajarticles https://doi.org/10.5194/bg-12-3641-2015 2022-12-31T15:53:16Z Several hypotheses have been proposed for the onset of the spring phytoplankton bloom in the North Atlantic. Our main objective is to examine which bottom-up processes can best predict the annual increase in surface phytoplankton concentration in the North Atlantic by applying novel phenology algorithms to ocean colour data. We construct indicator fields and time series which, in various combinations, provide models consistent with the principle dynamics previously proposed. Using a multimodel inference approach, we investigate the evidence supporting these models and how it varies in space. We show that, in terms of bottom-up processes alone, there is a dominant physical mechanism, namely mixed-layer shoaling, that best predicts the interannual variation in the initial increase in surface chlorophyll across large sectors of the North Atlantic. We further show that different regions are governed by different physical phenomena and that wind-driven mixing is a common component, with either heat flux or light as triggers. We believe these findings to be relevant to the ongoing discussion on North Atlantic bloom onset. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Biogeosciences 12 11 3641 3653 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 A. S. A. Ferreira H. Hátún F. Counillon M. R. Payne A. W. Visser Synoptic-scale analysis of mechanisms driving surface chlorophyll dynamics in the North Atlantic |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Several hypotheses have been proposed for the onset of the spring phytoplankton bloom in the North Atlantic. Our main objective is to examine which bottom-up processes can best predict the annual increase in surface phytoplankton concentration in the North Atlantic by applying novel phenology algorithms to ocean colour data. We construct indicator fields and time series which, in various combinations, provide models consistent with the principle dynamics previously proposed. Using a multimodel inference approach, we investigate the evidence supporting these models and how it varies in space. We show that, in terms of bottom-up processes alone, there is a dominant physical mechanism, namely mixed-layer shoaling, that best predicts the interannual variation in the initial increase in surface chlorophyll across large sectors of the North Atlantic. We further show that different regions are governed by different physical phenomena and that wind-driven mixing is a common component, with either heat flux or light as triggers. We believe these findings to be relevant to the ongoing discussion on North Atlantic bloom onset. |
format |
Article in Journal/Newspaper |
author |
A. S. A. Ferreira H. Hátún F. Counillon M. R. Payne A. W. Visser |
author_facet |
A. S. A. Ferreira H. Hátún F. Counillon M. R. Payne A. W. Visser |
author_sort |
A. S. A. Ferreira |
title |
Synoptic-scale analysis of mechanisms driving surface chlorophyll dynamics in the North Atlantic |
title_short |
Synoptic-scale analysis of mechanisms driving surface chlorophyll dynamics in the North Atlantic |
title_full |
Synoptic-scale analysis of mechanisms driving surface chlorophyll dynamics in the North Atlantic |
title_fullStr |
Synoptic-scale analysis of mechanisms driving surface chlorophyll dynamics in the North Atlantic |
title_full_unstemmed |
Synoptic-scale analysis of mechanisms driving surface chlorophyll dynamics in the North Atlantic |
title_sort |
synoptic-scale analysis of mechanisms driving surface chlorophyll dynamics in the north atlantic |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/bg-12-3641-2015 https://doaj.org/article/183d0130377d47e58d76dbbe5e553347 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Biogeosciences, Vol 12, Pp 3641-3653 (2015) |
op_relation |
https://www.biogeosciences.net/12/3641/2015/bg-12-3641-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-12-3641-2015 1726-4170 1726-4189 https://doaj.org/article/183d0130377d47e58d76dbbe5e553347 |
op_doi |
https://doi.org/10.5194/bg-12-3641-2015 |
container_title |
Biogeosciences |
container_volume |
12 |
container_issue |
11 |
container_start_page |
3641 |
op_container_end_page |
3653 |
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1766117551377481728 |