Vertical temperature profiles in the Venus mesosphere obtained by two retrieval methods from the VIRTIS-VEX observations

•VIRTIS(M)-VEX measurements are used to retrieve mesospheric temperature profiles.•Results for two independent retrieval methods (Chahine, Bayes) are compared.•Temperature profiles are in good agreement for both algorithms.•Corresponding standard deviations do not exceed 5 K for altitudes above 59 k...

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Bibliographic Details
Published in:Journal of quantitative spectroscopy & radiative transfer 2018-09, Vol.217, p.407-415
Main Authors: Wolkenberg, Paulina, Piccioni, Giuseppe, Banaszkiewicz, Marek
Format: Article
Language:English
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Summary:•VIRTIS(M)-VEX measurements are used to retrieve mesospheric temperature profiles.•Results for two independent retrieval methods (Chahine, Bayes) are compared.•Temperature profiles are in good agreement for both algorithms.•Corresponding standard deviations do not exceed 5 K for altitudes above 59 km.•Cold collar and hot polar regions are observed. We present vertical temperature profiles derived by two different retrieval methods from nighttime radiation measurements performed by VIRTIS(M)-VEx (Visible and Infrared Thermal Imaging Spectrometer, M channel—Venus Express). The Bayesian approach to the optimal estimation method and the relaxation method are applied in this study. This is a first attempt to present and compare results obtained from two independent methods. It allows us to be more convinced of our interpretation. After comparison of temperature profiles we conclude that both retrieval methods are able to sound the atmospheric layers higher than 59 km (
ISSN:0022-4073
1879-1352
DOI:10.1016/j.jqsrt.2018.06.010