Increased atmospheric carbon dioxide and climate feedback mechanisms

Details Increased atmospheric carbon dioxide and climate feedback mechanisms Increased atmospheric carbon dioxide and climate feedback mechanisms

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982eras.nasa...28c&link_type=abstract

In NASA. Langley Research Center Earth Radiation Science Seminars p 28-44 (SEE N82-33320 23-93)

Mathematics

Logic

Atmospheric Composition, Carbon Dioxide Concentration, Climate, Earth Surface, Planetary Temperature, Atmospheric Chemistry, Climate Change, Cloud Cover, Earth Radiation Budget Experiment, Long Term Effects, Solar Radiation, Temperature Effects

Scientific paper

As a consequence of fossil fuel burning, the atmospheric concentration of carbon dioxide has increased from 314 ppm in 1958, when detailed measurements of this quantity began, to a present value of 335 ppm; and it is estimated that during the next century, the CO2 concentration will double relative to its assumed preindustrial value of 290 ppm. Since CO2 is an infrared-active gas, increases in its atmospheric concentration would lead to a larger infrared opacity for the atmospheric which, by normal logic, would result in a warmer Earth. A number of modeling endeavors suggest a 2 to 4 C increase in global mean surface temperature with doubling of the CO2 concentration. But such estimates of CO2-induced warming are highly uncertain because of a lack of knowledge of climate feedback mechanisms. Interactive influences upon the solar and infrared opacities of the Earth-atmosphere system can either amplify or damp a climate-forcing mechanism such as increasing CO2. Climate feedback mechanisms discussed include climate sensitivity, cloudiness-radiation feedback, climate change predictions, and interactive atmospheric chemistry.

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