Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic
We investigate the significance of in situ dissolution of calcium carbonate above its saturation horizons using observations from the open subpolar North Atlantic [sNA] and to a lesser extent a 3-D biogeochemical model. The sNA is particularly well suited for observation-based detections of in situ,...
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2007
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00032572 2023-05-15T17:28:20+02:00 Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic Friis, K. Najjar, R. G. Follows, M. J. Dutkiewicz, S. Körtzinger, A. Johnson, K. M. 2007-03 electronic https://doi.org/10.5194/bg-4-205-2007 https://noa.gwlb.de/receive/cop_mods_00032572 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032526/bg-4-205-2007.pdf https://bg.copernicus.org/articles/4/205/2007/bg-4-205-2007.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-4-205-2007 https://noa.gwlb.de/receive/cop_mods_00032572 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032526/bg-4-205-2007.pdf https://bg.copernicus.org/articles/4/205/2007/bg-4-205-2007.pdf https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2007 ftnonlinearchiv https://doi.org/10.5194/bg-4-205-2007 2022-02-08T22:46:11Z We investigate the significance of in situ dissolution of calcium carbonate above its saturation horizons using observations from the open subpolar North Atlantic [sNA] and to a lesser extent a 3-D biogeochemical model. The sNA is particularly well suited for observation-based detections of in situ, i.e. shallow-depth CaCO3 dissolution [SDCCD] as it is a region of high CaCO3 production, deep CaCO3 saturation horizons, and precisely-defined pre-formed alkalinity. Based on the analysis of a comprehensive alkalinity data set we find that SDCCD does not appear to be a significant process in the open sNA. The results from the model support the observational findings by indicating that there is not a significant need of SDCCD to explain observed patterns of alkalinity in the North Atlantic. Instead our investigation points to the importance of mixing processes for the redistribution of alkalinity from dissolution of CaCO3 from below its saturation horizons. However, mixing has recently been neglected for a number of studies that called for SDCCD in the sNA and on global scale. Article in Journal/Newspaper North Atlantic Niedersächsisches Online-Archiv NOA Biogeosciences 4 2 205 213 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Friis, K. Najjar, R. G. Follows, M. J. Dutkiewicz, S. Körtzinger, A. Johnson, K. M. Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic |
topic_facet |
article Verlagsveröffentlichung |
description |
We investigate the significance of in situ dissolution of calcium carbonate above its saturation horizons using observations from the open subpolar North Atlantic [sNA] and to a lesser extent a 3-D biogeochemical model. The sNA is particularly well suited for observation-based detections of in situ, i.e. shallow-depth CaCO3 dissolution [SDCCD] as it is a region of high CaCO3 production, deep CaCO3 saturation horizons, and precisely-defined pre-formed alkalinity. Based on the analysis of a comprehensive alkalinity data set we find that SDCCD does not appear to be a significant process in the open sNA. The results from the model support the observational findings by indicating that there is not a significant need of SDCCD to explain observed patterns of alkalinity in the North Atlantic. Instead our investigation points to the importance of mixing processes for the redistribution of alkalinity from dissolution of CaCO3 from below its saturation horizons. However, mixing has recently been neglected for a number of studies that called for SDCCD in the sNA and on global scale. |
format |
Article in Journal/Newspaper |
author |
Friis, K. Najjar, R. G. Follows, M. J. Dutkiewicz, S. Körtzinger, A. Johnson, K. M. |
author_facet |
Friis, K. Najjar, R. G. Follows, M. J. Dutkiewicz, S. Körtzinger, A. Johnson, K. M. |
author_sort |
Friis, K. |
title |
Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic |
title_short |
Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic |
title_full |
Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic |
title_fullStr |
Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic |
title_full_unstemmed |
Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic |
title_sort |
dissolution of calcium carbonate: observations and model results in the subpolar north atlantic |
publisher |
Copernicus Publications |
publishDate |
2007 |
url |
https://doi.org/10.5194/bg-4-205-2007 https://noa.gwlb.de/receive/cop_mods_00032572 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032526/bg-4-205-2007.pdf https://bg.copernicus.org/articles/4/205/2007/bg-4-205-2007.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
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-4-205-2007 https://noa.gwlb.de/receive/cop_mods_00032572 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032526/bg-4-205-2007.pdf https://bg.copernicus.org/articles/4/205/2007/bg-4-205-2007.pdf |
op_rights |
https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-4-205-2007 |
container_title |
Biogeosciences |
container_volume |
4 |
container_issue |
2 |
container_start_page |
205 |
op_container_end_page |
213 |
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1766120959512674304 |