2018
DOI: 10.1002/2017gb005809
|View full text |Cite
|
Sign up to set email alerts
|

An Analytical Framework for the Steady State Impact of Carbonate Compensation on Atmospheric CO2

Abstract: The deep‐ocean carbonate ion concentration impacts the fraction of the marine calcium carbonate production that is buried in sediments. This gives rise to the carbonate compensation feedback, which is thought to restore the deep‐ocean carbonate ion concentration on multimillennial timescales. We formulate an analytical framework to investigate the impact of carbonate compensation under various changes in the carbon cycle relevant for anthropogenic change and glacial cycles. Using this framework, we show that c… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1

Citation Types

1
1
0

Year Published

2019
2019
2024
2024

Publication Types

Select...
3

Relationship

1
2

Authors

Journals

citations
Cited by 3 publications
(2 citation statements)
references
References 81 publications
1
1
0
Order By: Relevance
“…Rather, the highest productivity appears to be associated with the glacial-interglacial transitions. Therefore, we think that a causal link between productivity and atmospheric CO 2 as described in Omta et al (2018) would be more consistent with this record. That is, a spike in burial of organic matter leads to a decrease in deep-ocean alkalinity and the eventual outgassing of CO 2 from the ocean to the atmosphere due to carbonate compensation.…”
Section: Discussionsupporting
confidence: 52%
“…Rather, the highest productivity appears to be associated with the glacial-interglacial transitions. Therefore, we think that a causal link between productivity and atmospheric CO 2 as described in Omta et al (2018) would be more consistent with this record. That is, a spike in burial of organic matter leads to a decrease in deep-ocean alkalinity and the eventual outgassing of CO 2 from the ocean to the atmosphere due to carbonate compensation.…”
Section: Discussionsupporting
confidence: 52%
“…Dissolution of CaCO 3 raised the ocean's alkalinity (8.1% increase in salinity-normalized [S N ] TALK, Table 4), thereby contributing to the ice age drawdown of atmospheric CO 2 (Archer et al, 2000;Archer & Maier-Reimer, 1994;Sigman & Boyle, 2000). The additional CO 2 drawdown attributable to this carbonate compensation effect has been calculated to fall in the range of 15-30% depending on ocean circulation and other boundary conditions Kobayashi & Oka, 2018;Omta et al, 2018). Furthermore, the greater S N TALK during the LGP should be taken into account when past changes in the partial pressure of CO 2 and other carbon system parameters are calculated by combining information from boron isotope proxies for pH with an assumed value of S N TALK (e.g., Honisch et al, 2009;Martinez-Boti et al, 2015;Palmer & Pearson, 2003;Rae et al, 2018).…”
Section: Global Biogeochemical Cyclesmentioning
confidence: 99%