Requirements for a Satisfactory Model of the Global Carbon Cycle and Current Status of Modeling Efforts

  • Bert Bolin

Abstract

The concentration of CO2 in the atmosphere is rising as a result of emissions into the atmosphere by fossil fuel combustion, deforestation, and expanding agriculture. Experiments with numerical models of the earth’s climatic system indicate that a further increase of the atmospheric CO2 concentration might change climate on earth significantly. To understand how rapidly such possible changes might occur, we must be able to project the likely rate of change of atmospheric CO2 due to future CO2 emissions. For this purpose a better knowledge of the global carbon cycle is required, particularly of how atmospheric CO2 is exchanging with the terrestrial ecosystems and the oceans. It has been maintained that about half of the CO2 emitted into the atmosphere has stayed there; that is, the “airborne fraction” of the emissions has been about 50%. The emissions due to deforestation and changing land use need more careful consideration in this context, and the airborne fraction of the total emissions has not been determined accurately as yet. We need to know more precisely what has happened in the past to be able to validate models of the global carbon cycle.

Keywords

Carbon Cycle Terrestrial Ecosystem Ocean Model Global Carbon Cycle Satisfactory Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Baumgartner, A. and E. Reichel. 1975. The World Water Balance. Elsevier/North Holland, Amsterdam.Google Scholar
  2. Bolin, B. 1983. Changing global biogeochemistry. In P. Brewer (ed.), Oceanography. The Present and the Future, pp. 305–326. Springer Verlag, New York.Google Scholar
  3. Bolin, B., A. Björkström, K. Holmen, and B. Moore. 1983. The simultaneous use of tracers for ocean circulation studies. Tellus 35B, 206–236.Google Scholar
  4. Brewer, P. 1983. Carbon dioxide and the oceans. In Changing Climate, pp. 188215. Report of the Carbon Dioxide Assessment Committee. National Academy Press, Washington, D.C.Google Scholar
  5. Broecker, W. S., R. Gerard, M. Ewing, and B. C. Heezen. 1960. Natural radiocarbon in the Atlantic Ocean. J. Geophys. Res. 65: 2903–2931.Google Scholar
  6. Broecker, W. S., I.-H. Li, T.-H. Peng. 1971. Man’s unseen artifact. In D. W. Hood (ed.), Impingement of Man on the Oceans, pp. 287–324. Wiley-Interscience, New York.Google Scholar
  7. Broecker, W. S., T.-H. Peng, R. Engh. 1980. Modeling the carbon system. Radiocarbon 22: 565–598.Google Scholar
  8. Bryan, K., S. Manabe, R. C. Pacanowski. 1975. A global ocean-atmosphereclimate model. Part II. The oceanic circulation. J. Phys. Oceanogr. 5: 30–46.Google Scholar
  9. Bunker, A. F. 1980. Trends of variables and energy fluxes over the Atlantic Ocean from 1948 to 1972. Mon. Weather Rev., 108: 720–732.Google Scholar
  10. Chen, C.-T. A. 1983. The distribution of anthropogenic CO, in the Atlantic and Southern Oceans. (in press).Google Scholar
  11. Craig, H. 1957. The natural distribution of radiocarbon and the exchange time of carbon dioxide between atmosphere and sea. Tellus 9: 1–17.CrossRefGoogle Scholar
  12. Craig, H. 1963. The natural distribution of radiocarbon: mixing rates in the sea and residence times of water and carbon. In J. Geiss and E. D. Goldberg (eds.), Earth Sciences and Meteorites, pp. 103–114. North Holland Publishing Co., Amsterdam.Google Scholar
  13. Ebensen, S. K. and Y. Kushmir. 1981. The heat budget of the global ocean: an atlas based on estimates from surface marine observations. Report No. 29, Climate Res. Inst., Oregon State University, Corvallis.Google Scholar
  14. Houghton, R. A., J. E. Hobbie, J. M. Melillo, B. Moore, B. J. Peterson, G. R. Shaver, and G. Woodwell. 1983. Changes in the carbon content of terrestrial biota and soils between 1860 and 1980: a net release to the atmosphere. Ecol. Monogr. 53 (3): 235–262.CrossRefGoogle Scholar
  15. Keeling, C. D. 1983. The global carbon cycle: what we know and could know from atmospheric, biospheric, and oceanic observations. In Carbon Dioxide, Science and Consensus, U.S. Department of Energy, CO, Conf. 820–970, pp. IL3–1I. 62. National Technical Information Service, Springfield, Virginia.Google Scholar
  16. Keeling, C. D., W. G. Mook, and P. P. Tans. 1979. Recent trends in the 13C/12C ratio of atmospheric carbon dioxide. Nature 277: 121–123.CrossRefGoogle Scholar
  17. Nydal, R. and K. Lövseth. 1983. Tracing bomb “C in the atmosphere 1962–1980. J. Geophys. Res. 88, C6: 3621–3642.Google Scholar
  18. Oeschger, H., U. Siegenthaler, U. Schotterer, and A. Gugelmann. 1975. A box diffusion model to study the carbon dioxide exchange in nature. Tellus 27: 168–192.CrossRefGoogle Scholar
  19. Östlund, H. G. and M. Stuiver. 1980. GEOSECS Pacific radiocarbon. Radiocarbon 22: 25–53.Google Scholar
  20. Schlesinger, W. H. 1977. Carbon balance in terrestrial detritus. Ann. Ecol. Syst. 8: 51–81.Google Scholar
  21. Siegenthaler, U. 1983. Uptake of excess CO, by an outcrop-diffusion model of the ocean. J. Geophys. Res., 88, C6, 99: 3599–3608.CrossRefGoogle Scholar
  22. Stigebrand, A. 1981. A model for the thickness and salinity of the upper layer in the Arctic Ocean and the relationship between ice thickness and some external parameters. J. Phys. Oceanogr. 11: 1407–1422.Google Scholar
  23. Stuiver, M. and H. G. Östlund. 1980. GEOSECS Atlantic radiocarbon. Radiocarbon 22: 1–24.Google Scholar
  24. Sverdrup, H. U., M. W. Johnson, and R. H. Fleming. 1942. Oceanography, Prentice Hall, Englewood Cliffs, New Jersey.Google Scholar
  25. Tans, P. 1981. A compilation of bomb “C data for use in global carbon model calculations. In B. Bolin (ed.), Carbon Cycle Modeling, pp. 131–157. John Wiley and Sons, New York.Google Scholar
  26. Vitousek, P. M. 1983. The effects of deforestation on air, soil, and water. In B. Bolin (ed.), The Major Biogeochemical Cycles and Their Interactions. pp. 223245. John Wiley and Sons, New York.Google Scholar
  27. Wunsch, C. 1978. The general circulation of the North Atlantic west of 50° W determined from inverse methods, Rev. Geophys. Space Phys., 16: 583–620.Google Scholar

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© Springer Science+Business Media New York 1986

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  • Bert Bolin

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