Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO3 dissolution
The marine aragonite cycle has been included in the global biogeochemical model PISCES to study the role of aragonite in shallow water CaCO3 dissolution. Aragonite production is parameterized as a function of mesozooplankton biomass and aragonite saturation state of ambient waters. Observation-based...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2008
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-5-1057-2008 https://noa.gwlb.de/receive/cop_mods_00031266 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031220/bg-5-1057-2008.pdf https://bg.copernicus.org/articles/5/1057/2008/bg-5-1057-2008.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00031266 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00031266 2023-05-15T17:11:04+02:00 Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO3 dissolution Gangstø, R. Gehlen, M. Schneider, B. Bopp, L. Aumont, O. Joos, F. 2008-07 electronic https://doi.org/10.5194/bg-5-1057-2008 https://noa.gwlb.de/receive/cop_mods_00031266 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031220/bg-5-1057-2008.pdf https://bg.copernicus.org/articles/5/1057/2008/bg-5-1057-2008.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-5-1057-2008 https://noa.gwlb.de/receive/cop_mods_00031266 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031220/bg-5-1057-2008.pdf https://bg.copernicus.org/articles/5/1057/2008/bg-5-1057-2008.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2008 ftnonlinearchiv https://doi.org/10.5194/bg-5-1057-2008 2022-02-08T22:46:49Z The marine aragonite cycle has been included in the global biogeochemical model PISCES to study the role of aragonite in shallow water CaCO3 dissolution. Aragonite production is parameterized as a function of mesozooplankton biomass and aragonite saturation state of ambient waters. Observation-based estimates of marine carbonate production and dissolution are well reproduced by the model and about 60% of the combined CaCO3 water column dissolution from aragonite and calcite is simulated above 2000 m. In contrast, a calcite-only version yields a much smaller fraction. This suggests that the aragonite cycle should be included in models for a realistic representation of CaCO3 dissolution and alkalinity. For the SRES A2 CO2 scenario, production rates of aragonite are projected to notably decrease after 2050. By the end of this century, global aragonite production is reduced by 29% and total CaCO3 production by 19% relative to pre-industrial. Geographically, the effect from increasing atmospheric CO2, and the subsequent reduction in saturation state, is largest in the subpolar and polar areas where the modeled aragonite production is projected to decrease by 65% until 2100. Article in Journal/Newspaper Mesozooplankton Niedersächsisches Online-Archiv NOA Biogeosciences 5 4 1057 1072 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Gangstø, R. Gehlen, M. Schneider, B. Bopp, L. Aumont, O. Joos, F. Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO3 dissolution |
topic_facet |
article Verlagsveröffentlichung |
description |
The marine aragonite cycle has been included in the global biogeochemical model PISCES to study the role of aragonite in shallow water CaCO3 dissolution. Aragonite production is parameterized as a function of mesozooplankton biomass and aragonite saturation state of ambient waters. Observation-based estimates of marine carbonate production and dissolution are well reproduced by the model and about 60% of the combined CaCO3 water column dissolution from aragonite and calcite is simulated above 2000 m. In contrast, a calcite-only version yields a much smaller fraction. This suggests that the aragonite cycle should be included in models for a realistic representation of CaCO3 dissolution and alkalinity. For the SRES A2 CO2 scenario, production rates of aragonite are projected to notably decrease after 2050. By the end of this century, global aragonite production is reduced by 29% and total CaCO3 production by 19% relative to pre-industrial. Geographically, the effect from increasing atmospheric CO2, and the subsequent reduction in saturation state, is largest in the subpolar and polar areas where the modeled aragonite production is projected to decrease by 65% until 2100. |
format |
Article in Journal/Newspaper |
author |
Gangstø, R. Gehlen, M. Schneider, B. Bopp, L. Aumont, O. Joos, F. |
author_facet |
Gangstø, R. Gehlen, M. Schneider, B. Bopp, L. Aumont, O. Joos, F. |
author_sort |
Gangstø, R. |
title |
Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO3 dissolution |
title_short |
Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO3 dissolution |
title_full |
Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO3 dissolution |
title_fullStr |
Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO3 dissolution |
title_full_unstemmed |
Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO3 dissolution |
title_sort |
modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water caco3 dissolution |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
https://doi.org/10.5194/bg-5-1057-2008 https://noa.gwlb.de/receive/cop_mods_00031266 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031220/bg-5-1057-2008.pdf https://bg.copernicus.org/articles/5/1057/2008/bg-5-1057-2008.pdf |
genre |
Mesozooplankton |
genre_facet |
Mesozooplankton |
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-5-1057-2008 https://noa.gwlb.de/receive/cop_mods_00031266 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031220/bg-5-1057-2008.pdf https://bg.copernicus.org/articles/5/1057/2008/bg-5-1057-2008.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-5-1057-2008 |
container_title |
Biogeosciences |
container_volume |
5 |
container_issue |
4 |
container_start_page |
1057 |
op_container_end_page |
1072 |
_version_ |
1766067920375382016 |