Ocean biogeochemical response to phytoplankton-light feedback in a global model
Oceanic phytoplankton, absorbing solar radiation, can influence the bio-optical properties of seawater and hence upper ocean physics. We include this process in a global ocean general circulation model (OGCM) coupled to a dynamic green ocean model (DGOM) based on multiple plankton functional types (...
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2008
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ftnerc:oai:nora.nerc.ac.uk:11563 2023-05-15T18:25:46+02:00 Ocean biogeochemical response to phytoplankton-light feedback in a global model Manizza, Manfredi Le Quéré, Corinne Watson, Andrew J. Buitenhuis, Erik T. 2008 text http://nora.nerc.ac.uk/id/eprint/11563/ https://nora.nerc.ac.uk/id/eprint/11563/1/2007JC004478.pdf http://www.agu.org/journals/jc/jc0810/2007JC004478/2007JC004478.pdf en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/11563/1/2007JC004478.pdf Manizza, Manfredi; Le Quéré, Corinne; Watson, Andrew J.; Buitenhuis, Erik T. 2008 Ocean biogeochemical response to phytoplankton-light feedback in a global model. Journal of Geophysical Research, 113 (C10), C10010. 13, pp. https://doi.org/10.1029/2007JC004478 <https://doi.org/10.1029/2007JC004478> Marine Sciences Meteorology and Climatology Ecology and Environment Publication - Article PeerReviewed 2008 ftnerc https://doi.org/10.1029/2007JC004478 2023-02-04T19:27:25Z Oceanic phytoplankton, absorbing solar radiation, can influence the bio-optical properties of seawater and hence upper ocean physics. We include this process in a global ocean general circulation model (OGCM) coupled to a dynamic green ocean model (DGOM) based on multiple plankton functional types (PFT). We not only study the impact of this process on ocean physics but we also explore the biogeochemical response due to this biophysical feedback. The phytoplankton-light feedback (PLF) impacts the dynamics of the upper tropical and subtropical oceans. The change in circulation enhances both the vertical supply in the tropics and the lateral supply of nutrients from the tropics to the subtropics boosting the subtropical productivity by up to 60 gC m(-2) a(-1). Physical changes, due to the PLF, impact on light and nutrient availability causing shifts in the ocean ecosystems. In the extratropics, increased stratification favors calcifiers (by up to similar to 8%) at the expense of mixed phytoplankton. In the Southern Ocean, silicifiers increase their biomass (by up to similar to 10%) because of the combined alleviation of iron and light limitation. The PLF has a small effect globally on air-sea fluxes of carbon dioxide (CO2, 72 TmolC a(-1) outgassing) and oxygen (O-2, 46 TmolO(2) a(-1) ingassing) because changes in biogeochemical processes (primary production, biogenic calcification, and export production) highly vary regionally and can also oppose each other. From our study it emerges that the main impact of the PLF is an amplification of the seasonal cycle of physical and biogeochemical properties of the high-latitude oceans mostly driven by the amplification of the SST seasonal cycle. Article in Journal/Newspaper Southern Ocean Natural Environment Research Council: NERC Open Research Archive Southern Ocean Journal of Geophysical Research 113 C10 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Marine Sciences Meteorology and Climatology Ecology and Environment |
spellingShingle |
Marine Sciences Meteorology and Climatology Ecology and Environment Manizza, Manfredi Le Quéré, Corinne Watson, Andrew J. Buitenhuis, Erik T. Ocean biogeochemical response to phytoplankton-light feedback in a global model |
topic_facet |
Marine Sciences Meteorology and Climatology Ecology and Environment |
description |
Oceanic phytoplankton, absorbing solar radiation, can influence the bio-optical properties of seawater and hence upper ocean physics. We include this process in a global ocean general circulation model (OGCM) coupled to a dynamic green ocean model (DGOM) based on multiple plankton functional types (PFT). We not only study the impact of this process on ocean physics but we also explore the biogeochemical response due to this biophysical feedback. The phytoplankton-light feedback (PLF) impacts the dynamics of the upper tropical and subtropical oceans. The change in circulation enhances both the vertical supply in the tropics and the lateral supply of nutrients from the tropics to the subtropics boosting the subtropical productivity by up to 60 gC m(-2) a(-1). Physical changes, due to the PLF, impact on light and nutrient availability causing shifts in the ocean ecosystems. In the extratropics, increased stratification favors calcifiers (by up to similar to 8%) at the expense of mixed phytoplankton. In the Southern Ocean, silicifiers increase their biomass (by up to similar to 10%) because of the combined alleviation of iron and light limitation. The PLF has a small effect globally on air-sea fluxes of carbon dioxide (CO2, 72 TmolC a(-1) outgassing) and oxygen (O-2, 46 TmolO(2) a(-1) ingassing) because changes in biogeochemical processes (primary production, biogenic calcification, and export production) highly vary regionally and can also oppose each other. From our study it emerges that the main impact of the PLF is an amplification of the seasonal cycle of physical and biogeochemical properties of the high-latitude oceans mostly driven by the amplification of the SST seasonal cycle. |
format |
Article in Journal/Newspaper |
author |
Manizza, Manfredi Le Quéré, Corinne Watson, Andrew J. Buitenhuis, Erik T. |
author_facet |
Manizza, Manfredi Le Quéré, Corinne Watson, Andrew J. Buitenhuis, Erik T. |
author_sort |
Manizza, Manfredi |
title |
Ocean biogeochemical response to phytoplankton-light feedback in a global model |
title_short |
Ocean biogeochemical response to phytoplankton-light feedback in a global model |
title_full |
Ocean biogeochemical response to phytoplankton-light feedback in a global model |
title_fullStr |
Ocean biogeochemical response to phytoplankton-light feedback in a global model |
title_full_unstemmed |
Ocean biogeochemical response to phytoplankton-light feedback in a global model |
title_sort |
ocean biogeochemical response to phytoplankton-light feedback in a global model |
publisher |
American Geophysical Union |
publishDate |
2008 |
url |
http://nora.nerc.ac.uk/id/eprint/11563/ https://nora.nerc.ac.uk/id/eprint/11563/1/2007JC004478.pdf http://www.agu.org/journals/jc/jc0810/2007JC004478/2007JC004478.pdf |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/11563/1/2007JC004478.pdf Manizza, Manfredi; Le Quéré, Corinne; Watson, Andrew J.; Buitenhuis, Erik T. 2008 Ocean biogeochemical response to phytoplankton-light feedback in a global model. Journal of Geophysical Research, 113 (C10), C10010. 13, pp. https://doi.org/10.1029/2007JC004478 <https://doi.org/10.1029/2007JC004478> |
op_doi |
https://doi.org/10.1029/2007JC004478 |
container_title |
Journal of Geophysical Research |
container_volume |
113 |
container_issue |
C10 |
_version_ |
1766207405655326720 |