Abstract
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 <nu>6 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 <nu>6-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 <nu>6 emission based for a very cold day has been estimated to be 0.27 W m−2±10%.
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Evans, W.F.J., Puckrin, E. The measurement and extraction of the <nu>6 atmospheric emission band of CFC-12 from interfering emission features. Annales Geophysicae 13, 969–972 (1995). https://doi.org/10.1007/s00585-995-0969-z
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DOI: https://doi.org/10.1007/s00585-995-0969-z