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Measurements of nitric oxide in the stratosphere of the Southern Hemisphere
Author(s) -
Roy C. R.,
Galbally I. E.,
Ridley B. A.
Publication year - 1980
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49710645017
Subject(s) - stratosphere , atmospheric sciences , mixing ratio , equator , southern hemisphere , environmental science , latitude , climatology , meteorology , geology , physics , geodesy
Vertical profiles of NO in the stratosphere above Mildura, Australia (34°S, 142°E), were obtained in December 1977 using a balloon‐borne chemiluminescent detector. The average mixing ratio increased from about 0.2 ppbv at 10 km to 0.45 at 20 km and to about 7 ppbv at 33 km. The results are in good agreement with a profile obtained in the USA (32°N, 96°W) during October 1977 with the same instrument. It is suggested that the stratospheric NO distribution may, at low latitudes, be symmetric about the equator. The NO measurements and earlier chemical‐filter HNO 3 measurements made at Mildura are compared to recent chemical model predictions.