The influence of winter convection on primary production: A parameterisation using a hydrostatic three-dimensional biogeochemical model
In the recent past observational and modelling studies have shown that the vertical displacement of water parcels, and therefore, phytoplankton particles in regions of deep-reaching convection plays a key role in late winter/early spring primary production. The underlying mechanism describes how con...
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Online Access: | https://zenodo.org/record/31345 https://doi.org/10.1016/j.jmarsys.2014.07.002 |
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ftzenodo:oai:zenodo.org:31345 2023-06-06T11:57:44+02:00 The influence of winter convection on primary production: A parameterisation using a hydrostatic three-dimensional biogeochemical model Grosse, Fabian Lindemann, Christian Pätsch, Johannes Backhaus, Jan O. 2015-07-01 https://zenodo.org/record/31345 https://doi.org/10.1016/j.jmarsys.2014.07.002 unknown info:eu-repo/grantAgreement/EC/FP7/264933/ https://zenodo.org/communities/euro-basin https://zenodo.org/communities/ecfunded https://zenodo.org/record/31345 https://doi.org/10.1016/j.jmarsys.2014.07.002 oai:zenodo.org:31345 info:eu-repo/semantics/openAccess Journal of Marine Systems 147 138-152 (2015) Convection Primary production Parameterisation Biogeochemical modelling Northeast Atlantic orthwestern European Continental Shelf info:eu-repo/semantics/article publication-article 2015 ftzenodo https://doi.org/10.1016/j.jmarsys.2014.07.002 2023-04-13T22:49:39Z In the recent past observational and modelling studies have shown that the vertical displacement of water parcels, and therefore, phytoplankton particles in regions of deep-reaching convection plays a key role in late winter/early spring primary production. The underlying mechanism describes how convection cells capture living phytoplankton cells and recurrently expose them to sunlight. This study presents a parameterisation called ‘phytoconvection’ which focusses on the influence of convection on primary production. This parameterisation was implemented into a three-dimensional physical–biogeochemical model and applied to the Northwestern European Continental Shelf and areas of the adjacent Northeast Atlantic. The simulation was compared to a ‘conventional’ parameterisation with respect to its influence on phytoplankton concentrations during the annual cycle and its effect on the carbon cycle. The simulation using the new parameterisation showed good agreement with observation data recorded during winter, whereas the reference simulation did not capture the observed phytoplankton concentrations. The new parameterisation had a strong influence on the carbon export through the sinking of particulate organic carbon. The carbon export during late winter/early spring significantly exceeded the export of the reference run. Furthermore, a non-hydrostatic convection model was used to evaluate the major assumption of the presented parameterisation which implies the matching of the mixed layer depth with the convective mixing depth. The applied mixed layer depth criterion principally overestimates the actual convective mixing depth. However, the results showed that this assumption is reasonable during late winter, while indicating a mismatch during spring. Article in Journal/Newspaper Northeast Atlantic Zenodo Journal of Marine Systems 147 138 152 |
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Convection Primary production Parameterisation Biogeochemical modelling Northeast Atlantic orthwestern European Continental Shelf |
spellingShingle |
Convection Primary production Parameterisation Biogeochemical modelling Northeast Atlantic orthwestern European Continental Shelf Grosse, Fabian Lindemann, Christian Pätsch, Johannes Backhaus, Jan O. The influence of winter convection on primary production: A parameterisation using a hydrostatic three-dimensional biogeochemical model |
topic_facet |
Convection Primary production Parameterisation Biogeochemical modelling Northeast Atlantic orthwestern European Continental Shelf |
description |
In the recent past observational and modelling studies have shown that the vertical displacement of water parcels, and therefore, phytoplankton particles in regions of deep-reaching convection plays a key role in late winter/early spring primary production. The underlying mechanism describes how convection cells capture living phytoplankton cells and recurrently expose them to sunlight. This study presents a parameterisation called ‘phytoconvection’ which focusses on the influence of convection on primary production. This parameterisation was implemented into a three-dimensional physical–biogeochemical model and applied to the Northwestern European Continental Shelf and areas of the adjacent Northeast Atlantic. The simulation was compared to a ‘conventional’ parameterisation with respect to its influence on phytoplankton concentrations during the annual cycle and its effect on the carbon cycle. The simulation using the new parameterisation showed good agreement with observation data recorded during winter, whereas the reference simulation did not capture the observed phytoplankton concentrations. The new parameterisation had a strong influence on the carbon export through the sinking of particulate organic carbon. The carbon export during late winter/early spring significantly exceeded the export of the reference run. Furthermore, a non-hydrostatic convection model was used to evaluate the major assumption of the presented parameterisation which implies the matching of the mixed layer depth with the convective mixing depth. The applied mixed layer depth criterion principally overestimates the actual convective mixing depth. However, the results showed that this assumption is reasonable during late winter, while indicating a mismatch during spring. |
format |
Article in Journal/Newspaper |
author |
Grosse, Fabian Lindemann, Christian Pätsch, Johannes Backhaus, Jan O. |
author_facet |
Grosse, Fabian Lindemann, Christian Pätsch, Johannes Backhaus, Jan O. |
author_sort |
Grosse, Fabian |
title |
The influence of winter convection on primary production: A parameterisation using a hydrostatic three-dimensional biogeochemical model |
title_short |
The influence of winter convection on primary production: A parameterisation using a hydrostatic three-dimensional biogeochemical model |
title_full |
The influence of winter convection on primary production: A parameterisation using a hydrostatic three-dimensional biogeochemical model |
title_fullStr |
The influence of winter convection on primary production: A parameterisation using a hydrostatic three-dimensional biogeochemical model |
title_full_unstemmed |
The influence of winter convection on primary production: A parameterisation using a hydrostatic three-dimensional biogeochemical model |
title_sort |
influence of winter convection on primary production: a parameterisation using a hydrostatic three-dimensional biogeochemical model |
publishDate |
2015 |
url |
https://zenodo.org/record/31345 https://doi.org/10.1016/j.jmarsys.2014.07.002 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Journal of Marine Systems 147 138-152 (2015) |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/264933/ https://zenodo.org/communities/euro-basin https://zenodo.org/communities/ecfunded https://zenodo.org/record/31345 https://doi.org/10.1016/j.jmarsys.2014.07.002 oai:zenodo.org:31345 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.jmarsys.2014.07.002 |
container_title |
Journal of Marine Systems |
container_volume |
147 |
container_start_page |
138 |
op_container_end_page |
152 |
_version_ |
1767966093552386048 |