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Southern hemisphere ground based measurements of carbonyl fluoride (COF 2 ) and hydrogen fluoride (HF): Partitioning between fluoride reservoir species
Author(s) -
Reisinger Andreas R.,
Jones Nicholas B.,
Matthews W. Andrew,
Rinsland Curtis P.
Publication year - 1994
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/94gl00693
Subject(s) - hydrogen fluoride , fluoride , hydrogen , atmospheric sciences , environmental science , analytical chemistry (journal) , materials science , chemistry , environmental chemistry , physics , inorganic chemistry , organic chemistry
We report infrared ground based total column measurements of the stratospheric fluorine reservoir gases COF 2 and HF above Lauder, New Zealand (45°S, 167.8°E) obtained between April 1993 and January 1994. The average retrieved COF 2 and HF total columns are 2.81(±0.56)×10 14 and 9.91(±1.09)×10 14 molecules/cm², respectively. The daily average COF 2 and HF columns are correlated; this correlation is likely the result of dynamics. The average HF/COF 2 column ratio on days with measurements of both HF and COF 2 is 3.63 (±0.55). Comparison of this ratio with model calculations implies that the quantum yield for COF 2 photolysis is near unity. Our measured COF 2 columns are higher than all previously reported values, but inconsistencies among the earlier measurements and uncertainty in the latitudinal gradient of the COF 2 column preclude an accurate determination of the long‐term COF 2 trend.