Abstract
Recent ice-core measurements have revealed that the atmospheric CO2 level increased comparatively rapidly by about 70 p.p.m. at the end of the last ice age1. Here we present an ocean–atmosphere model in which changes in the productivity of high latitude surface waters (from which deep water is formed and circulated around the world's ocean) and/or in the thermo-haline overturning rate can lead to substantial changes in atmospheric partial pressure of carbon dioxide (P CO2), over a concentration range 163–425 p.p.m. A major contribution to the low P CO2 of the last ice may have been an increase in the net high latitude productivity, possibly coupled with a decrease in the thermohaline overturning.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Neftel, A. H., Oeschger, H., Schwander, J., Stauffer, B. & Zumbrunn, R. Nature 295, 220–223 (1982).
Broecker, W. S. in The Sea Vol. 2 (ed. Hill, M. N.) 88–108 (Interscience, New York, 1963).
Sarmiento, J. L. J. phys. Oceanogr. 13, 1269–1274 (1983).
Broecker, W. S. & Peng, T.-H. Tracers in the Sea (Eldigio, Palisades, 1982).
Broecker, W. S. Geochim. cosmochim. Acta 46, 1689–1705 (1982).
Broecker, W. S. & Takahashi, T. Ann. Glaciol. (submitted).
Siegenthaler, U. J. geophys. Res. 88, 3599–3608 (1983).
Redfield, A. C., Ketchum, B. H. & Richards, F. A. The Sea Vol. 2 (ed. Hill, M. N.) 26–75 (Interscience, New York, 1963).
Takahashi, T., Broecker, W. S., Bainbridge, A. E. & Weiss, R. F. Tech. Rep. No. 1, CU-1-80 (Lamont-Doherty Geol. Observatory, Palisades, New York, 1980).
Boyle, E. A. & Keigwin, L. D. Science 218, 784–787 (1982).
Streeter, S. S., Belanger, P. E., Kellogg, T. B. & Duplessey, J. C. Quat. Res. 18, 72–90 (1982).
Manabe, S., Stouffer, R. J. J. geophys. Res. 85, 5529–5554 (1980).
Oeschger, H. et al. Maurie Ewing Symp. 1982 Vol. 4 (American Geophysical Union, Washington DC, in the press).
Levitus, S. Climatological Atlas of the World Ocean (NOAA Professional Pap. 13, US Dept. of Commerce, Washington DC, 1982).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Sarmiento, J., Toggweiler, J. A new model for the role of the oceans in determining atmospheric P CO2. Nature 308, 621–624 (1984). https://doi.org/10.1038/308621a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/308621a0
This article is cited by
-
Southern Ocean glacial conditions and their influence on deglacial events
Nature Reviews Earth & Environment (2023)
-
Investigating Europa’s Habitability with the Europa Clipper
Space Science Reviews (2023)
-
Ocean biogeochemical modelling
Nature Reviews Methods Primers (2022)
-
Abruptly attenuated carbon sequestration with Weddell Sea dense waters by 2100
Nature Communications (2022)
-
Enhanced ocean oxygenation during Cenozoic warm periods
Nature (2022)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.