Contribution of riverine nutrients to the silicon biogeochemistry of the global ocean – a model study
Continental shelf seas are known to support a large fraction of the global primary production. Yet, they are mostly ignored or neglected in global biogeochemical models. A number of processes that control the transfer of dissolved nutrients from rivers to the open ocean remain poorly understood. Thi...
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Copernicus Publications
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00027720 2023-05-15T15:08:12+02:00 Contribution of riverine nutrients to the silicon biogeochemistry of the global ocean – a model study Bernard, C. Y. Dürr, H. H. Heinze, C. Segschneider, J. Maier-Reimer, E. 2011-03 electronic https://doi.org/10.5194/bg-8-551-2011 https://noa.gwlb.de/receive/cop_mods_00027720 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00027675/bg-8-551-2011.pdf https://bg.copernicus.org/articles/8/551/2011/bg-8-551-2011.pdf eng eng Copernicus Publications Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-8-551-2011 https://noa.gwlb.de/receive/cop_mods_00027720 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00027675/bg-8-551-2011.pdf https://bg.copernicus.org/articles/8/551/2011/bg-8-551-2011.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2011 ftnonlinearchiv https://doi.org/10.5194/bg-8-551-2011 2022-02-08T22:48:32Z Continental shelf seas are known to support a large fraction of the global primary production. Yet, they are mostly ignored or neglected in global biogeochemical models. A number of processes that control the transfer of dissolved nutrients from rivers to the open ocean remain poorly understood. This applies in particular to dissolved silica which drives the growth of diatoms that form a large part of the phytoplankton biomass and are thus an important contributor to export production of carbon. Here, the representation of the biogeochemical cycling along continents is improved by coupling a high resolution database of riverine fluxes of nutrients to the global biogeochemical ocean general circulation model HAMOCC5-OM. Focusing on silicon (Si), but including the whole suite of nutrients – carbon (C), nitrogen (N) and phosphorus (P) in various forms – inputs are implemented in the model at coastal coupling points using the COSCAT global database of 156 mega-river-ensemble catchments from Meybeck et al. (2006). The catchments connect to the ocean through coastal segments according to three sets of criteria: natural limits, continental shelf topography, and geophysical dynamics. According to the model the largest effects on nutrient concentrations occur in hot spots such as the Amazon plume, the Arctic – with high nutrient inputs in relation to its total volume, and areas that encounter the largest increase in human activity, e.g., Southern Asia. Article in Journal/Newspaper Arctic Phytoplankton Niedersächsisches Online-Archiv NOA Arctic Mega River ENVELOPE(-119.153,-119.153,58.833,58.833) Biogeosciences 8 3 551 564 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Bernard, C. Y. Dürr, H. H. Heinze, C. Segschneider, J. Maier-Reimer, E. Contribution of riverine nutrients to the silicon biogeochemistry of the global ocean – a model study |
topic_facet |
article Verlagsveröffentlichung |
description |
Continental shelf seas are known to support a large fraction of the global primary production. Yet, they are mostly ignored or neglected in global biogeochemical models. A number of processes that control the transfer of dissolved nutrients from rivers to the open ocean remain poorly understood. This applies in particular to dissolved silica which drives the growth of diatoms that form a large part of the phytoplankton biomass and are thus an important contributor to export production of carbon. Here, the representation of the biogeochemical cycling along continents is improved by coupling a high resolution database of riverine fluxes of nutrients to the global biogeochemical ocean general circulation model HAMOCC5-OM. Focusing on silicon (Si), but including the whole suite of nutrients – carbon (C), nitrogen (N) and phosphorus (P) in various forms – inputs are implemented in the model at coastal coupling points using the COSCAT global database of 156 mega-river-ensemble catchments from Meybeck et al. (2006). The catchments connect to the ocean through coastal segments according to three sets of criteria: natural limits, continental shelf topography, and geophysical dynamics. According to the model the largest effects on nutrient concentrations occur in hot spots such as the Amazon plume, the Arctic – with high nutrient inputs in relation to its total volume, and areas that encounter the largest increase in human activity, e.g., Southern Asia. |
format |
Article in Journal/Newspaper |
author |
Bernard, C. Y. Dürr, H. H. Heinze, C. Segschneider, J. Maier-Reimer, E. |
author_facet |
Bernard, C. Y. Dürr, H. H. Heinze, C. Segschneider, J. Maier-Reimer, E. |
author_sort |
Bernard, C. Y. |
title |
Contribution of riverine nutrients to the silicon biogeochemistry of the global ocean – a model study |
title_short |
Contribution of riverine nutrients to the silicon biogeochemistry of the global ocean – a model study |
title_full |
Contribution of riverine nutrients to the silicon biogeochemistry of the global ocean – a model study |
title_fullStr |
Contribution of riverine nutrients to the silicon biogeochemistry of the global ocean – a model study |
title_full_unstemmed |
Contribution of riverine nutrients to the silicon biogeochemistry of the global ocean – a model study |
title_sort |
contribution of riverine nutrients to the silicon biogeochemistry of the global ocean – a model study |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/bg-8-551-2011 https://noa.gwlb.de/receive/cop_mods_00027720 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00027675/bg-8-551-2011.pdf https://bg.copernicus.org/articles/8/551/2011/bg-8-551-2011.pdf |
long_lat |
ENVELOPE(-119.153,-119.153,58.833,58.833) |
geographic |
Arctic Mega River |
geographic_facet |
Arctic Mega River |
genre |
Arctic Phytoplankton |
genre_facet |
Arctic Phytoplankton |
op_relation |
Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-8-551-2011 https://noa.gwlb.de/receive/cop_mods_00027720 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00027675/bg-8-551-2011.pdf https://bg.copernicus.org/articles/8/551/2011/bg-8-551-2011.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-8-551-2011 |
container_title |
Biogeosciences |
container_volume |
8 |
container_issue |
3 |
container_start_page |
551 |
op_container_end_page |
564 |
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1766339610588217344 |