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,...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications (EGU)
2007
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/1486/ https://oceanrep.geomar.de/id/eprint/1486/1/12_Friis_2007_DissolutionOfCalciumCarbonateObservations_Artzeit_pubid7368.pdf https://doi.org/10.5194/bg-4-205-2007 |
id |
ftoceanrep:oai:oceanrep.geomar.de:1486 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:1486 2024-09-15T18:21:25+00:00 Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic Friis, K. Najjar, R.G. Follows, M.J. Dutkiewicz, S. Körtzinger, Arne Johnson, K.M. 2007 text https://oceanrep.geomar.de/id/eprint/1486/ https://oceanrep.geomar.de/id/eprint/1486/1/12_Friis_2007_DissolutionOfCalciumCarbonateObservations_Artzeit_pubid7368.pdf https://doi.org/10.5194/bg-4-205-2007 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/1486/1/12_Friis_2007_DissolutionOfCalciumCarbonateObservations_Artzeit_pubid7368.pdf Friis, K., Najjar, R. G., Follows, M. J., Dutkiewicz, S., Körtzinger, A. and Johnson, K. M. (2007) Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic. Open Access Biogeosciences (BG), 4 . pp. 205-213. DOI 10.5194/bg-4-205-2007 <https://doi.org/10.5194/bg-4-205-2007>. doi:10.5194/bg-4-205-2007 info:eu-repo/semantics/openAccess Article PeerReviewed 2007 ftoceanrep https://doi.org/10.5194/bg-4-205-2007 2024-09-04T05:04:40Z 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 OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Biogeosciences 4 2 205 213 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
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, Arne Johnson, K.M. |
spellingShingle |
Friis, K. Najjar, R.G. Follows, M.J. Dutkiewicz, S. Körtzinger, Arne Johnson, K.M. Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic |
author_facet |
Friis, K. Najjar, R.G. Follows, M.J. Dutkiewicz, S. Körtzinger, Arne 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 (EGU) |
publishDate |
2007 |
url |
https://oceanrep.geomar.de/id/eprint/1486/ https://oceanrep.geomar.de/id/eprint/1486/1/12_Friis_2007_DissolutionOfCalciumCarbonateObservations_Artzeit_pubid7368.pdf https://doi.org/10.5194/bg-4-205-2007 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/1486/1/12_Friis_2007_DissolutionOfCalciumCarbonateObservations_Artzeit_pubid7368.pdf Friis, K., Najjar, R. G., Follows, M. J., Dutkiewicz, S., Körtzinger, A. and Johnson, K. M. (2007) Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic. Open Access Biogeosciences (BG), 4 . pp. 205-213. DOI 10.5194/bg-4-205-2007 <https://doi.org/10.5194/bg-4-205-2007>. doi:10.5194/bg-4-205-2007 |
op_rights |
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 |
_version_ |
1810459969179353088 |