Mesospheric temperature inferred from daytime observation of the O2 atmospheric (0,0) band system

Physics

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Atmospheric Temperature, Dayglow, Earth Atmosphere, Mesosphere, Oxygen Spectra, Spectral Bands, Daytime, Molecular Excitation, Radiative Transfer, Rocket-Borne Instruments

Scientific paper

A rocket-borne Ebert-Fastie spectrometer was used to measure the dayglow O2(b 1Sigma super(+) sub g) atmospheric (0,0) band centered at 761.9 nm. The tangent altitude for the observations ranged from 63 to 101 km. Analysis of the (0,0) band observations is presented. The peak intensity of the (0,0) band was 3.7 +/- 0.2 megarayleigh at 87 km. The results were compared to a multiple-scattering radiative transfer model that includes a detailed photochemical calculation of the sources and sinks of the O2 excited state. The kinetic temperature was determined by analysis of the rotational development of the O2 (0,0) band. The average temperature between 94 and 101 km was 182 +/- 7 K.

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