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| Titel |
The measurement and extraction of the Nu6 atmospheric emission band of CFC-12 from interfering emission features |
| VerfasserIn |
W. F. J. Evans, E. Puckrin |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 13, no. 9 ; Nr. 13, no. 9, S.969-972 |
| Datensatznummer |
250011982
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| Publikation (Nr.) |
 copernicus.org/angeo-13-969-1995.pdf |
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| Zusammenfassung |
| Ground-based thermal emission measurements of
the zenith sky have been made at Peterborough, Ontario since January 1993. In
this paper, the measurement of the Nu6 band of atmospheric
CFC-12, an important greenhouse gas, is presented for a cold, clear day in
January 1994. A spectrum of the non-CFC-12 emission features has been simulated
using the FASCD3P radiation code and measured radiosonde profiles of
temperature, pressure and humidity. This has enabled a satisfactory subtraction
of the interfering emission features from the CFC-12 emission spectrum. A
comparison of the observed and simulated Nu6-bands of CFC-12
shows good agreement at all frequencies of emission. From these spectra the
total downward greenhouse radiative flux from the CFC-12 Nu6
emission based for a very cold day has been estimated to be 0.27 W m–2±10%. |
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