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The influence of the 9.6 micron ozone band on the atmospheric infra-red cooling rate

โœ Scribed by G. N. Plass


Publisher
John Wiley and Sons
Year
1956
Tongue
English
Weight
913 KB
Volume
82
Category
Article
ISSN
0035-9009

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โœฆ Synopsis


Abstract

The upward and downward radiation flux and the heating and cooling rate in the atmosphere have been determined for the 9.6 ฮผ band of ozone from the absorption measurements of Summerfield. Three different ozone distribution curves as well as three different temperatureโ€height curves have been used for these calculations. The radiations that interact with the 9.6 ฮผ ozone band always act to cool the atmosphere from the earth's surface to a height of several kilometres and to heat the region from there to approximately 20 km. The heating or cooling rate is never larger than a few tenths of a degree Celsius per day in this region. On the other hand, from 35 to 60 km the usual order of magnitude of the cooling is 2 to 3ยฐC/day, but the cooling rate can be considerably larger if the upper layers have a higher temperature than normal. An increase in the ozone amount at the lower altitudes may cause the surface temperature of the earth to rise several degrees Celsius in order to restore infraโ€red equilibrium, if no other factors change that produce an effect upon the heat balance. The pressure broadening and overlapping of the spectral lines have been taken into account in these calculations together with all other physical phenomena that are known to be of importance to the problem. An estimate is given for the accuracy of the results.


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The influence of the 15ฮผ carbon-dioxide
โœ G. N. Plass ๐Ÿ“‚ Article ๐Ÿ“… 1956 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 833 KB

## Abstract The upward and downward radiation flux and cooling rate are calculated for the 15ฮผ band of carbon dioxide. Results are obtained for three different carbonโ€dioxide concentrations from the surface of the earth to 75 km, and for six frequency intervals covering the band. The infraโ€red abso