The Vertical Distributions of Atmospheric CF2Cl2, CFC13 and N2O over Japan

Tropospheric and stratospheric air samples were collected over Japan since 1978, and analyzed for CF2Cl2, CFC13 and N20 by a GC-ECD method. Mean volume mixing ratios in the troposphere were 282 ppt for CF2Cl2, 162 ppt for CFC13, and 310 ppb for N20 during October 1978 to March 1979. It was also foun...

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Bibliographic Details
Published inJournal of the Meteorological Society of Japan Vol. 62; no. 1; pp. 158 - 164
Main Authors Hirota, Michio, Muramatsu, Hisafumi, Makino, Yukio, Sasaki, Torn, Toyama, Yoshio
Format Journal Article
LanguageEnglish
Published Meteorological Society of Japan 1984
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Summary:Tropospheric and stratospheric air samples were collected over Japan since 1978, and analyzed for CF2Cl2, CFC13 and N20 by a GC-ECD method. Mean volume mixing ratios in the troposphere were 282 ppt for CF2Cl2, 162 ppt for CFC13, and 310 ppb for N20 during October 1978 to March 1979. It was also found that the mean mixing ratios of CF2Cl2 and CFCl3 increased by about 20% from 1979 to 1983. The volume mixing ratios of CF2Cl2, CFCl3 and N20 in the lower stratosphere decreased with increasing altitude in accordance with the vertical profiles calculated from a photochemical theory.
ISSN:0026-1165
2186-9057
DOI:10.2151/jmsj1965.62.1_158