Stratospheric N_2O mixing ratio profile from high-resolution balloon-borne solar absorption spectra and laboratory spectra near 1880 cm^−1

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Abstract
A nonlinear least-squares fitting procedure has been used to derive the stratospheric N2O mixing ratio profile from balloon-borne solar absorption spectra and laboratory spectra near 1880 cm−1. The atmospheric spectra were recorded during sunset from a float altitude of 33 km with the University of Denver 0.02-cm−1 resolution interferometer near Alamogordo, N.M. (33°N), on 10 Oct. 1979. The laboratory data were used to determine the N2O line intensities. The measurements indicate an N2O mixing ratio of 264 ppbv near 15 km decreasing to 155 ppbv near 28 km.