Low interannual variability in recent oceanic uptake of atmospheric carbon dioxide
SCIE
SCOPUS
- Title
- Low interannual variability in recent oceanic uptake of atmospheric carbon dioxide
- Authors
- Lee, K; Wanninkhof, R; Takahashi, T; Doney, SC; Feely, RA
- Date Issued
- 1998-11-12
- Publisher
- MACMILLAN MAGAZINES LTD
- Abstract
- An improved understanding of the partitioning of carbon between the atmosphere, terrestrial biosphere, and ocean allows for more accurate predictions of future atmospheric CO2 concentrations under various fossil-fuel CO2-emission scenarios. One of the more poorly quantified relevant processes is the interannual variability in the uptake of fossil-fuel CO2 from the atmosphere by the terrestrial biosphere and ocean. Existing estimates, based on atmospheric measurements, indicate that the oceanic variability is large(1-3). Here we estimate the interannual variability in global net air-sea CO2 nux using changes in the observed wind speeds and the partial pressure of CO2 (p(co2)) in surface sea water and the overlying air. Changes in seawater P-co2 are deduced from interannual anomalies in sea surface temperature and the regionally and seasonally varying temperature-dependence of seawater P-co2, assuming that variations in sea surface temperature reflect seawater P-co2 changes caused by thermodynamics, biological processes and water mixing. The calculated interannual variability in oceanic CO2 uptake of 0.4 Ct Cyr(-1) (2 sigma) is much less than that inferred from the analysis of atmospheric measurements(1-3). Our results suggest that variable sequestration of carbon by the terrestrial biosphere is the main cause of observed year-to-year variations in the rate of atmospheric CO2 accumulation.
- Keywords
- NORTH PACIFIC; CO2; BUDGET; PCO(2); SINK; FLUX
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/28517
- DOI
- 10.1038/24139
- ISSN
- 0028-0836
- Article Type
- Article
- Citation
- NATURE, vol. 396, no. 6707, page. 155 - 159, 1998-11-12
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- There are no files associated with this item.
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