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Cited by 41Marine and coastal ecosystemsGeology and Paleoclimatology ResearchPaleontology and Stratigraphy of Fossils

Influence of deep-sea benthic processes on atmospheric CO2

Sundquist, E. T.·1990·Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
DOI 10.1098/rsta.1990.0062
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Abstract

Understanding ocean—atmosphere carbon-cycle interactions requires attention to the potential importance of marine benthic processes, particularly deep-sea carbonate dissolution. However, because of the wide array of processes that control marine carbonate dissolution rates, it is difficult to identify which processes dominate rates of response to global carbon-cycle perturbations. This paper describes a model that simulates atmospheric CO2, ocean chemistry and sediment carbonate content in a time-dependent fashion. Response times are assessed through an analysis of a series of perturbation experiments in which a pulse of CO2 is added to the model atmosphere. The results of these experiments suggest that the relatively rapid buffering of atmospheric CO2 by seawater is controlled by the rate of ocean mixing and accounts for about 60 % of the total buffering by the ocean-sediment system. The more gradual buffering of atmospheric CO2 and seawater by carbonate sediments is controlled by the rate of sedimentation of carbonate particles, but the rate of this buffering is slower than previously thought because the dissolution or precipitation of carbonates does not produce dissolved carbonate ions on a mole-for-mole basis.

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14 of 14 references verified0 citation errors · 0 not checkable

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  • The estimated 1.7 ka timescale for seafloor CaCO3 neutralization is consistent with a 1500-2700 year timescale estimated for a primary alkalinity response in box models, but about 3 times shorter than the 5-6 ka estimated by Archer et al. [1997, 1998].

    “This is consistent with a 1500-to 2700-year timescale estimated for a primary alkalinity response in box models [Sundquist, 1990], but about 3 times shorter than the 5À6 ka estimated by Archer et al. [1997Archer et al. [ , 1998]].”

    From Regulation of atmospheric CO <sub>2</sub> by deep‐sea sediments in an Earth system model (2007) · cites this paper as Sundquist, 1990

  • Previous analysis of the role of deep-sea sediments in the long-term fate of fossil fuel CO2 employed off-line tracer-transport marine carbon cycle models in which the ocean circulation was prescribed.

    “Previous analysis of the role of deep-sea sediments in the long-term fate of fossil fuel CO 2 employed off-line tracer-transport marine carbon cycle models in which the ocean circulation was prescribed [e.g., Archer et al., 1997Archer et al., , 1998;;Sundquist, 1990].”

    From Regulation of atmospheric CO <sub>2</sub> by deep‐sea sediments in an Earth system model (2007) · cites this paper as Sundquist, 1990

  • The estimated 8.3 ka timescale is near identical to previous 3-D ocean-based model analyses (8.2-8.5 ka) and consistent with the 6300-11,800 year secondary alkalinity response of Sundquist [1990].

    “Our estimated timescale of 8.3 ka (Figure 7c) is near identical to previous 3-D ocean-based model analyses (8.2À8.5 ka [Archer et al., 1997[Archer et al., , 1998]]) and consistent with the 6300À11,800 year ''secondary alkalinity response'' of Sundquist [1990].”

    From Regulation of atmospheric CO <sub>2</sub> by deep‐sea sediments in an Earth system model (2007) · cites this paper as Sundquist, 1990

  • Because the GENIE-1 model contains a climate component, the authors are able to extend previous analysis by explicitly assessing the impact of major feedbacks between CO2 and climate on carbonate compensation.

    “Because the GENIE-1 model contains a climate component we are able to extend the analysis made in formative earlier studies [e.g., Archer et al. , 1997Archer et al. , , 1998;;Sundquist, 1990] by now explicitly assessing the impact of major feedbacks between CO 2 and climate on carbonate compensation.”

    From Regulation of atmospheric CO <sub>2</sub> by deep‐sea sediments in an Earth system model (2007) · cites this paper as Sundquist, 1990

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Authors
Sundquist, E. T.
Affiliations
United States Geological Survey (US)
Corresponding author
Sundquist, E. T.
ORCID
Sundquist, E. T.
Venue
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
Publisher
The Royal Society
Published
1990-06-19
Volume
331
Issue
1616
Pages
155-165
ISSN
  • 0080-4614 (ISSN-L)
  • 2054-0272
DOI
10.1098/rsta.1990.0062
OpenAlex
W1945985876
Cited by
41
References
15
Citations by year
2021: 1 · 2018: 1 · 2017: 1 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 4 · 2012: 2
FWCI
1.67
Type
journal article
Language
en
Open access
closed
Licence
royalsociety.org/journals/ethics-policies/data-sharing-mining/ (tdm)
Locations
Philosophical Transactions of the Royal Society of London Series A Mathematical and Physical Sciences (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
Keywords
atmospheric CO2, carbonate sediments, ocean mixing, carbonate buffering, carbonate precipitation, carbonate dissolution, response time, perturbation experiments, seawater chemistry

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