Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing
Treatment of the underwater light field in ocean biogeochemical models has been attracting increasing interest, with some models moving towards more complex parameterisations. We conduct a simple sensitivity study of a typical, highly simplified parameterisation. In our study, we vary the phytoplank...
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ftdoajarticles:oai:doaj.org/article:59c686acf0164481badb9be27f4a0eea 2023-05-15T18:25:34+02:00 Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing K. F. Kvale K. J. Meissner 2017-10-01T00:00:00Z https://doi.org/10.5194/bg-14-4767-2017 https://doaj.org/article/59c686acf0164481badb9be27f4a0eea EN eng Copernicus Publications https://www.biogeosciences.net/14/4767/2017/bg-14-4767-2017.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-14-4767-2017 1726-4170 1726-4189 https://doaj.org/article/59c686acf0164481badb9be27f4a0eea Biogeosciences, Vol 14, Pp 4767-4780 (2017) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.5194/bg-14-4767-2017 2022-12-31T01:15:08Z Treatment of the underwater light field in ocean biogeochemical models has been attracting increasing interest, with some models moving towards more complex parameterisations. We conduct a simple sensitivity study of a typical, highly simplified parameterisation. In our study, we vary the phytoplankton light attenuation parameter over a range constrained by data during both pre-industrial equilibrated and future climate scenario RCP8.5. In equilibrium, lower light attenuation parameters (weaker self-shading) shift net primary production (NPP) towards the high latitudes, while higher values of light attenuation (stronger shelf-shading) shift NPP towards the low latitudes. Climate forcing magnifies this relationship through changes in the distribution of nutrients both within and between ocean regions. Where and how NPP responds to climate forcing can determine the magnitude and sign of global NPP trends in this high CO 2 future scenario. Ocean oxygen is particularly sensitive to parameter choice. Under higher CO 2 concentrations, two simulations establish a strong biogeochemical feedback between the Southern Ocean and low-latitude Pacific that highlights the potential for regional teleconnection. Our simulations serve as a reminder that shifts in fundamental properties (e.g. light attenuation by phytoplankton) over deep time have the potential to alter global biogeochemistry. Article in Journal/Newspaper Southern Ocean Directory of Open Access Journals: DOAJ Articles Southern Ocean Pacific Biogeosciences 14 20 4767 4780 |
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 K. F. Kvale K. J. Meissner Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Treatment of the underwater light field in ocean biogeochemical models has been attracting increasing interest, with some models moving towards more complex parameterisations. We conduct a simple sensitivity study of a typical, highly simplified parameterisation. In our study, we vary the phytoplankton light attenuation parameter over a range constrained by data during both pre-industrial equilibrated and future climate scenario RCP8.5. In equilibrium, lower light attenuation parameters (weaker self-shading) shift net primary production (NPP) towards the high latitudes, while higher values of light attenuation (stronger shelf-shading) shift NPP towards the low latitudes. Climate forcing magnifies this relationship through changes in the distribution of nutrients both within and between ocean regions. Where and how NPP responds to climate forcing can determine the magnitude and sign of global NPP trends in this high CO 2 future scenario. Ocean oxygen is particularly sensitive to parameter choice. Under higher CO 2 concentrations, two simulations establish a strong biogeochemical feedback between the Southern Ocean and low-latitude Pacific that highlights the potential for regional teleconnection. Our simulations serve as a reminder that shifts in fundamental properties (e.g. light attenuation by phytoplankton) over deep time have the potential to alter global biogeochemistry. |
format |
Article in Journal/Newspaper |
author |
K. F. Kvale K. J. Meissner |
author_facet |
K. F. Kvale K. J. Meissner |
author_sort |
K. F. Kvale |
title |
Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
title_short |
Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
title_full |
Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
title_fullStr |
Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
title_full_unstemmed |
Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
title_sort |
primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/bg-14-4767-2017 https://doaj.org/article/59c686acf0164481badb9be27f4a0eea |
geographic |
Southern Ocean Pacific |
geographic_facet |
Southern Ocean Pacific |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Biogeosciences, Vol 14, Pp 4767-4780 (2017) |
op_relation |
https://www.biogeosciences.net/14/4767/2017/bg-14-4767-2017.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-14-4767-2017 1726-4170 1726-4189 https://doaj.org/article/59c686acf0164481badb9be27f4a0eea |
op_doi |
https://doi.org/10.5194/bg-14-4767-2017 |
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Biogeosciences |
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14 |
container_issue |
20 |
container_start_page |
4767 |
op_container_end_page |
4780 |
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1766207125409759232 |