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Greenhouse Effects due to Man-Made Perturbations of Trace Gases

Wang, W. C. and Yung, Y. L. and Lacis, A. A. and Mo, T. and Hansen, J. E. (1976) Greenhouse Effects due to Man-Made Perturbations of Trace Gases. Science, 194 (4266). pp. 685-690. ISSN 0036-8075. doi:10.1126/science.194.4266.685.

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Nitrous oxide, methane, ammonia, and a number of other trace constituents in the earth's atmosphere have infrared absorption bands in the spectral region 7 to 14 µm and contribute to the atmospheric greenhouse effect. The concentrations of these trace gases may undergo substantial changes because of man's activities. Extensive use of chemical fertilizers and combustion of fossil fuels may perturb the nitrogen cycle, leading to increases in atmospheric N_2O, and the same perturbing processes may increase the amounts of atmospheric CH_4 and NH_3. We use a one-dimensional radiative-convective model for the atmospheric thermal structure to compute the change in the surface temperature of the earth for large assumed increases in the trace gas concentrations; doubling the N_2O, CH_4, and NH_3 concentrations is found to cause additive increases in the surface temperature of 0.7°, 0.3°, and 0.1°K, respectively. These systematic effects on the earth's radiation budget would have substantial climatic significance. It is therefore important that the abundances of these trace gases be accurately monitored to determine the actual trends of their concentrations.

Item Type:Article
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Yung, Y. L.0000-0002-4263-2562
Additional Information:© 1976 American Association for the Advancement of Science. We thank R. Jastrow for pointing out the paper by Eddy (31), which led to the computation reported in (30). We also would like to thank P. Varanasi, F. W. Taylor, and A. D. Jones for data supplied prior to publication, and V. Ramanathan, W. B. Pearson, B. Gay, and G. Orton for useful information.
Issue or Number:4266
Record Number:CaltechAUTHORS:20140722-132442437
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Official Citation:Greenhouse Effects due to Man-Made Perturbations of Trace Gases W. C. Wang, Y. L. Yung, A. A. Lacis, T. Mo and J. E. Hansen Science, New Series, Vol. 194, No. 4266 (Nov. 12, 1976), pp. 685-690 Published by: American Association for the Advancement of Science Article Stable URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47401
Deposited By: Tony Diaz
Deposited On:23 Jul 2014 15:54
Last Modified:10 Nov 2021 17:39

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