Significant long-term increase of fossil fuel CO 2 uptake from reduced marine calcification
Open accessPreprint — published as 10.5194/bg-4-481-2007
Abstract
Abstract. Analysis of available plankton manipulation experiments demonstrates a previously unrecognized wide range of sensitivities of biogenic calcification to simulated anthropogenic acidification of the ocean, with the "lab rat" of planktic calcifiers, Emiliania huxleyi not representative of calcification generally. We assess the implications of the experimental uncertainty in plankton calcification response by creating an ensemble of realizations of an Earth system model that encapsulates a comparable range of uncertainty in calcification response. We predict a substantial future reduction in marine carbonate production, with ocean CO2 sequestration across the model ensemble enhanced by between 62 and 199 PgC by the year 3000, equivalent to a reduction in the atmospheric fossil fuel CO2 burden at that time of up to 13%. Concurrent changes in ocean circulation and surface temperatures contribute about one third to the overall importance of reduced plankton calcification.
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There are substantial uncertainties in the likely global response of calcifiers to lower surface pH.
“Although there are substantial uncertainties in the likely global response of calcifiers to lower surface pH [Kleypas et al., 2006;Ridgwell et al., 2006]”
From Regulation of atmospheric CO <sub>2</sub> by deep‐sea sediments in an Earth system model (2007) · cites this paper as Ridgwell et al., 2006
In the GENIE-1 model, a substantial reduction in CaCO3 export occurs in response to ocean surface acidification, resulting in a pronounced acceleration of both seafloor and terrestrial CaCO3 neutralization processes.
“In the GENIE-1 model, a substantial reduction in CaCO 3 export occurs in response to ocean surface acidification [Ridgwell et al., 2006] (Figure 8c) resulting in a pronounced acceleration of both seafloor and terrestrial CaCO 3 neutralization processes, indicated by the steepening of initial and long-term slopes in Figure 9.”
From Regulation of atmospheric CO <sub>2</sub> by deep‐sea sediments in an Earth system model (2007) · cites this paper as Ridgwell et al., 2006
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Research works printed but not linked: 17
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Ridgwell, A., Hargreaves, J. C., Edwards, N. R., Annan, J. D., Lenton, T. M., Marsh, R., Yool, A., & Watson, A. (2007) · Biogeosciences · doi:10.5194/bg-4-87-2007 · Cited by 295 · see citing works
Self-citationRegulation of atmospheric CO <sub>2</sub> by deep‐sea sediments in an Earth system model
Ridgwell, A., & Hargreaves, J. C. (2007) · Global Biogeochemical Cycles · doi:10.1029/2006gb002764 · Cited by 213 · see citing works
Self-citation
- Authors
- Ridgwell, A., Zondervan, I., Hargreaves, J. C., Bijma, J., & Lenton, T. M.
- Affiliations
- University of Bristol (GB)
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung (DE)
- University of East Anglia (GB)
- Venue
- Biogeosciences
- Publisher
- Copernicus GmbH
- Published
- 2006-11-13
- Volume
- 4
- Issue
- 4
- Pages
- 481-492
- ISSN
- 1726-4170 (ISSN-L)
- OpenAlex
- W2141754303
- Cited by
- 105
- References
- 0
- Citations by year
- 2025: 2 · 2024: 1 · 2023: 3 · 2022: 4 · 2021: 2 · 2020: 2 · 2019: 3 · 2018: 7 · 2017: 1 · 2016: 4 · 2015: 8 · 2014: 6 · 2013: 6 · 2012: 12
- FWCI
- 8.41
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Biogeosciences (publishedVersion, cc-by)
- Helmholtz-Zentrum für Polar-und Meeresforschung (Alfred-Wegener-Institut) (acceptedVersion)
- Bristol Research (University of Bristol) (submittedVersion)
- HAL (submittedVersion, other-oa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- UEA Digital Repository (University of East Anglia) (submittedVersion, cc-by-nc-sa)
- Funders
- Canadian Foundation for Climate and Atmospheric Sciences
- Canada Research Chairs
- Natural Environment Research Council
- Japan Agency for Marine-Earth Science and Technology
- Topics
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Ocean Acidification Effects and Responses
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
- Keywords
- ocean carbon uptake, ocean acidification, Emiliania huxleyi, ocean circulation change, surface temperature change, Earth system model ensembles
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