Physics
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21..797r&link_type=abstract
Geophysical Research Letters, Volume 21, Issue 9, p. 797-800
Physics
11
Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Meteorology And Atmospheric Dynamics: Middle Atmosphere Dynamics
Scientific paper
We report infrared ground based total column measurements of the stratospheric fluorine reservoir gases COF2 and HF above Lauder, New Zealand (45° S, 167.8°eE) obtained between April 1993 and January 1994. The average retrieved COF2 and HF total columns are 2.81(+/-0.56)×1014 and 9.91(+/-1.09)×1014 molecules/cm2, respectively. The daily average COF2 and HF columns are correlated; this correlation is likely the average COF2 and HF columns are correlated; this correlation is likely the result of dynamics. The average HF/COF2 column ratio on days with measurements of both HF and COF2 is 3.63 (+/-0.55). Comparison of this ratio with model calculations implies that the quantum yield for COF2 photolysis is near unity. Our measured COF2 columns are higher than all previously reported values, but inconsistencies among the earlier measurements and uncertainty in the latitudinal gradient of the COF2 column preclude an accurate determination of the long-term COF2 trend.
Jones Nicholas B.
Matthews Andrew W.
Reisinger Andreas R.
Rinsland Curtis P.
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