Advertisement

CO2 and climate: Where is the water vapor feedback?

  • Sh. B. Idso
Article

Summary

Results of previously published empirical studies are used to demonstrate that the water vapor feedback mechanism, so important to the calculation of a significant climatic effect for a doubling of the atmospheric CO2 concentration, appears to be counter-balanced by another feedback mechanism of opposite sign. At high temperatures (low latitudes) the two effects essentially negate each other; while at lower temperatures (high latitudes) their respective strengths have yet to be determined. What is known to date tends to indicate that the climatic consequences of increasing the atmospheric carbon dioxide concentration will be significantly less than what is routinely predicted by the general circulation models of the atmosphere in use today.

Keywords

General Circulation Model Atmospheric Carbon Dioxide Water Vapor Feedback Atmospheric Carbon Dioxide Concentration Radiative Perturbation 
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.

CO2 und Klima: Wo verbleibt die Wasserdampf-Rückkopplung?

Zusammenfassung

Resultate früher veröffentlichter, empirischer Studien werden benützt, um zu zeigen, daß der Wasserdampf-Rückkopplungsprozeß, der für die Berechnung eines signifikanten Klimaeffektes durch die Verdoppelung des atmosphärischen CO2 so ausschlaggebend ist, durch einen anderen Rückkopplungsprozeß entgegengesetzten Vorzeichens ausgewogen zu sein scheint. Bei hohen Temperaturen (niederen Breiten) halten sich die beiden Effekte annähernd die Waage, während bei niederen Temperaturen (hohen Breiten) die Größenordnung dieser Effekte erst bestimmt werden muß. Unsere bisherigen Erkenntnisse deuten an, daß die klimatischen Folgen einer Erhöhung der atmosphärischen Kohlendioxidkonzentration erheblich geringer sein werden, als durch die Resultate der gegenwärtig in Verwendung befindlichen allgemeinen Zirkulationsmodelle vorhergesagt wird.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Bach, W., Pankrath, J., Kellogg, W.: Man's Impact on Climate. Amsterdam: Elsevier 1979.Google Scholar
  2. 2.
    Bach, W., Pankrath, J., Williams, J.: Interactions of Energy and Climate. Dordrecht: D. Reidel 1980.Google Scholar
  3. 3.
    Bennett, I.: Variation of Daily Solar Radiation in North America During the Extreme Months. Arch. Met. Geoph. Biokl., Ser. B23, 31–57 (1975).CrossRefGoogle Scholar
  4. 4.
    Crane, A. J.: Comments on Recent Doubts About the CO2 Greenhouse Effect. J. Appl. Met.20, 1547–1549 (1981).CrossRefGoogle Scholar
  5. 5.
    Hanson, J., Johnson, D., Lacis, A., Lebedeff, S., Lee, P., Rind, D., Russell, G.: Climate Impact of Increasing Atmospheric Carbon Dioxide. Science213, 957–966 (1981).CrossRefGoogle Scholar
  6. 6.
    Idso, S. B.: The Climatological Significance of a Doubling of Earth's Atmospheric Carbon Dioxide Concentration. Science207, 1462–1463 (1980).CrossRefGoogle Scholar
  7. 7.
    Idso, S. B.: Carbon Dioxide and Climate. Science210, 7–8 (1980).CrossRefGoogle Scholar
  8. 8.
    Idso, S. B.: Carbon Dioxide — an Alternative View. New Scientist92, 444–446 (1981).Google Scholar
  9. 9.
    Idso, S. B.: An Empirical Evaluation of Earth's Surface Air Temperature Response to an Increase in Atmospheric Carbon Dioxide Concentration. AIP Conf. Proc. No. 82, Interpretation of Climate and Photochemical Models, Ozone and Temperature Measurements (Reck, R. A., Hummel, J. R., eds.), pp. 119–134. New York: American Institute of Physics 1982.Google Scholar
  10. 10.
    Idso, S. B.: Reply to A. J. Crane's “Comments on Recent Doubts About the CO2 Greenhouse Effect.” J. Appl. Met.21, 748 (1982).CrossRefGoogle Scholar
  11. 11.
    Idso, S. B.: A Surface Air Temperature Response Function for Earth's Atmosphere. Boundary-Layer Met.22, 227–232 (1982).CrossRefGoogle Scholar
  12. 12.
    Idso, S. B.: Temperature Limitation by Evaporation in Hot Climates and the Greenhouse Effects of Water Vapor and Carbon Dioxide. Agric. Met.26, in press (1982).Google Scholar
  13. 13.
    Idso, S. B., Brazel, A. J.: Climatological Effects of Atmospheric Particulate Pollution. Nature274, 781–782 (1978).CrossRefGoogle Scholar
  14. 14.
    Idso, S. B., Kangieser, P. C.: Seasonal Changes in the Vertical Distribution of Dust in the Lower Troposphere. J. Geophys. Res.75, 2179–2184 (1970).CrossRefGoogle Scholar
  15. 15.
    Kandel, R. S.: Surface Temperature Sensitivity to Increased Atmospheric CO2. Nature293, 634–636 (1981).CrossRefGoogle Scholar
  16. 16.
    Kellogg, W. W., Schware, R.: Climate Change and Society: Consequences of Increasing Atmospheric Carbon Dioxide. Boulder, Colo.: Westview Press 1981.Google Scholar
  17. 17.
    Newell, R. E., Dopplick, T. G.: Questions Concerning the Possible Influence of Anthropogenic CO2 on Atmospheric Temperatures. J. Appl. Met.18, 822–825 (1979).CrossRefGoogle Scholar
  18. 18.
    Newell, R. E., Dopplick, T. G.: Reply to Robert G. Watts' Discussion of ‘“Questions Concerning the Possible Influence of Anthropogenic CO2 on Atmospheric Temperature.’” J. Appl. Met.20, 114–117 (1981).CrossRefGoogle Scholar
  19. 19.
    Priestley, C. H. B.: The Limitation of Temperature by Evaporation in Hot Climates. Agric. Met.3, 241–246 (1966).CrossRefGoogle Scholar
  20. 20.
    Priestley, C. H. B., Taylor, R. J.: On the Assessment of Surface Heat Flux and Evaporation Using Large-Scale Parameters. Mon. Weath. Rev.100, 81–92 (1972).CrossRefGoogle Scholar
  21. 21.
    Ramanathan, V.: The Role of Ocean-Atmosphere Interactions in the CO2 Climate Problem. J. Atmos. Sci.38, 918–930 (1981).CrossRefGoogle Scholar
  22. 22.
    Schneider, S. L., Thompson, S. L.: Atmospheric CO2 and Climate: Importance of the Transient Response. J. Geophys. Res.86, 3135–3147 (1981).CrossRefGoogle Scholar
  23. 23.
    Watts, R. G.: Discussion of “Questions Concerning the Possible Influence of Anthropogenic CO2 on Atmospheric Temperature.” J. Appl. Met.19, 494–495 (1980).CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • Sh. B. Idso
    • 1
  1. 1.U.S. Water Conservation LaboratoryPhoenixUSA

Personalised recommendations