Long-term biogeochemical impacts of liming the ocean
Fossil fuel CO2 emissions result in large-scale long-term perturbations in seawater chemistry. Oceans take up atmospheric CO2, and several geo-engineering approaches have been suggested to mitigate impacts of CO2 emissions and resulting ocean acidification that are based on this property. One of the...
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ftorbi:oai:orbi.ulg.ac.be:2268/133304 2024-04-21T08:09:35+00:00 Long-term biogeochemical impacts of liming the ocean Ilyina, Tatiana Wolf-Gladrow, Dieter Munhoven, Guy Heinze, Christoph 2011-12-08 https://orbi.uliege.be/handle/2268/133304 en eng Abstract #OS43E-08 http://adsabs.harvard.edu/abs/2011AGUFMOS43E.08I https://orbi.uliege.be/handle/2268/133304 info:hdl:2268/133304 AGU Fall Meeting, San Francisco, United States - California [US-CA], from 05-12-2011 to 09-12-2011 Ocean Acidification Carbon Cycle CO2 Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique conference paper not in proceedings http://purl.org/coar/resource_type/c_18cp info:eu-repo/semantics/conferencePaper 2011 ftorbi 2024-03-27T14:44:44Z Fossil fuel CO2 emissions result in large-scale long-term perturbations in seawater chemistry. Oceans take up atmospheric CO2, and several geo-engineering approaches have been suggested to mitigate impacts of CO2 emissions and resulting ocean acidification that are based on this property. One of them is to enhance weathering processes to remove atmospheric CO2. This method involves dissolving rocks (i.e. limestone) or adding strong bases (i.e. calcium hydroxide) in the upper ocean and is termed as liming the oceans. The net effect of this approach is to increase ocean alkalinity, thereby increasing the oceanic capacity to store anthropogenic CO2. Another effect of adding alkalinity would be to drive seawater to higher pH values and thus counteract the ongoing ocean acidification. However, whereas adding bases only alter alkalinity of seawater, dissolution of carbonates perturb both, alkalinity and dissolved inorganic carbon budgets. Thus, on longer time scales, these two methods will likely have different biogeochemical effects in the ocean. Here we test enduring implications of the two approaches for marine carbon cycle using the global ocean biogeochemical model HAMOCC. In our model scenarios we add alkalinity in the amounts proportional to fossil fuel emissions. We compare the longterm effectiveness of the two geo-engineering approaches to decrease atmospheric CO2. Conference Object Ocean acidification University of Liège: ORBi (Open Repository and Bibliography) |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Ocean Acidification Carbon Cycle CO2 Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Ocean Acidification Carbon Cycle CO2 Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Ilyina, Tatiana Wolf-Gladrow, Dieter Munhoven, Guy Heinze, Christoph Long-term biogeochemical impacts of liming the ocean |
topic_facet |
Ocean Acidification Carbon Cycle CO2 Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
Fossil fuel CO2 emissions result in large-scale long-term perturbations in seawater chemistry. Oceans take up atmospheric CO2, and several geo-engineering approaches have been suggested to mitigate impacts of CO2 emissions and resulting ocean acidification that are based on this property. One of them is to enhance weathering processes to remove atmospheric CO2. This method involves dissolving rocks (i.e. limestone) or adding strong bases (i.e. calcium hydroxide) in the upper ocean and is termed as liming the oceans. The net effect of this approach is to increase ocean alkalinity, thereby increasing the oceanic capacity to store anthropogenic CO2. Another effect of adding alkalinity would be to drive seawater to higher pH values and thus counteract the ongoing ocean acidification. However, whereas adding bases only alter alkalinity of seawater, dissolution of carbonates perturb both, alkalinity and dissolved inorganic carbon budgets. Thus, on longer time scales, these two methods will likely have different biogeochemical effects in the ocean. Here we test enduring implications of the two approaches for marine carbon cycle using the global ocean biogeochemical model HAMOCC. In our model scenarios we add alkalinity in the amounts proportional to fossil fuel emissions. We compare the longterm effectiveness of the two geo-engineering approaches to decrease atmospheric CO2. |
format |
Conference Object |
author |
Ilyina, Tatiana Wolf-Gladrow, Dieter Munhoven, Guy Heinze, Christoph |
author_facet |
Ilyina, Tatiana Wolf-Gladrow, Dieter Munhoven, Guy Heinze, Christoph |
author_sort |
Ilyina, Tatiana |
title |
Long-term biogeochemical impacts of liming the ocean |
title_short |
Long-term biogeochemical impacts of liming the ocean |
title_full |
Long-term biogeochemical impacts of liming the ocean |
title_fullStr |
Long-term biogeochemical impacts of liming the ocean |
title_full_unstemmed |
Long-term biogeochemical impacts of liming the ocean |
title_sort |
long-term biogeochemical impacts of liming the ocean |
publishDate |
2011 |
url |
https://orbi.uliege.be/handle/2268/133304 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
AGU Fall Meeting, San Francisco, United States - California [US-CA], from 05-12-2011 to 09-12-2011 |
op_relation |
Abstract #OS43E-08 http://adsabs.harvard.edu/abs/2011AGUFMOS43E.08I https://orbi.uliege.be/handle/2268/133304 info:hdl:2268/133304 |
_version_ |
1796950721873051648 |