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Stratospheric NO 2 and H 2 O mixing ratio profiles from high resolution infrared solar spectra using nonlinear least squares
Author(s) -
Niple E.,
Mankin W. G.,
Goldman A.,
Murcray D. G.,
Murcray F. J.
Publication year - 1980
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/gl007i007p00489
Subject(s) - mixing ratio , sunset , spectral line , non linear least squares , physics , least squares function approximation , infrared , mixing (physics) , interferometry , atmospheric sciences , analytical chemistry (journal) , environmental science , optics , chemistry , explained sum of squares , mathematics , astronomy , quantum mechanics , chromatography , estimator , statistics
Nonlinear least squares spectral curve fitting has been used to derive vertical mixing ratio profiles for NO 2 and H 2 O above 16 km from high resolution (∼.02 cm −1 ) solar spectra collected during sunset with a balloon borne interferometer. The NO 2 profile shows a sharp peak of ˜8 ppbv at 32 km falling rapidly to <0.5 ppbv at 17 km. The H 2 O profile shows a broad peak of ˜6.5 ppmv at 30 km falling to <4 ppmv at 17 km.