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MLS observations of lower stratospheric ClO and O 3 in the 1992 southern hemisphere winter
Author(s) -
Waters J. W.,
Froidevaux L.,
Manney G. L.,
Read W. G.,
Elson L. S.
Publication year - 1993
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 - 10.1029/93gl01447
Subject(s) - southern hemisphere , polar vortex , northern hemisphere , stratosphere , atmospheric sciences , climatology , environmental science , geology
UARS MLS measurements of ClO in the 1992 southern hemisphere winter are described. Lower stratospheric ClO abundances greater than 1 ppbv were observed in the vortex beginning 1 June. The enhanced ClO reached largest areal extent in mid‐August, then retreated poleward. ClO abundances at 22 hPa decreased in early September while those at 46 hPa remained high. O 3 decrease within the vortex was observed by mid‐August, and was coincident with the enhanced ClO.