Premium
Stratospheric nitric oxide and ozone measurements using photoionization mass spectrometry and UV absorption
Author(s) -
Maier E. J.,
Aikin A. C.,
Ainsworth J. E.
Publication year - 1978
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/gl005i001p00037
Subject(s) - mixing ratio , photoionization , ozone , mass spectrometry , absorption (acoustics) , nitric oxide , mixing (physics) , atmospheric chemistry , in situ , analytical chemistry (journal) , altitude (triangle) , atmospheric sciences , environmental science , chemistry , materials science , environmental chemistry , ion , physics , ionization , chromatography , geometry , mathematics , organic chemistry , quantum mechanics , composite material
Nitric oxide has been measured in situ between 38.4 and 29.8 km by a new technique, photoionization mass spectrometry. Data indicate a peak mixing ratio of 5.7 ± 0.35 ppbv at 37.5 km and only 0.2 ± 0.2 ppbv at 32.8 km with a sharp gradient in concentration between 33 and 34 km. Simultaneous in‐situ measurements of the ozone concentration show no significant feature at that altitude. The rapid decrease in mixing ratio is not predicted by current theory.