Author
Nakagawa, HiromuJain, Sonal K.
Schneider, Nicholas M.
Montmessin, Franck
Yelle, Roger V.
Jiang, Fayu
Verdier, Loic
Kuroda, Takeshi
Yoshida, Nao
Fujiwara, Hitoshi
Imamura, Takeshi
Terada, Naoki
Terada, Kaori
Seki, Kanako
Gröller, Hannes
Deighan, Justin I.
Affiliation
Univ Arizona, Lunar & Planetary LabIssue Date
2020-02-17
Metadata
Show full item recordPublisher
AMER GEOPHYSICAL UNIONCitation
Nakagawa, H., Jain, S. K., Schneider, N. M., Montmessin, F., Yelle, R. V., Jiang, F., et al. (2020). A warm layer in the nightside mesosphere of Mars. Geophysical Research Letters, 47, e2019GL085646. https://doi.org/ 10.1029/2019GL085646Journal
GEOPHYSICAL RESEARCH LETTERSRights
Copyright © 2020. American Geophysical Union. All Rights Reserved.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
We report a new set of stellar occultation measurements for nightside temperature profiles made by the Mars Atmosphere and Volatile EvolutioN/Imaging Ultraviolet Spectrograph that provide evidence for a recurring layer of warm air between 70 and 90 km altitudes in the nightside mesosphere of Mars during L-s = 0-180 degrees in Martian Year 33-34. The nightside profiles reveal a recurring peak of atmospheric temperature around 80 km over the equator to the middle latitudes in the northern hemisphere. The predictions of the Mars Climate Database have a warm layer with much smaller amplitudes. The observed peak amplitudes are larger than those predicted by the model by up to 90 K. Wavenumber-3 structures are seen in the warm layer that are potentially signatures of thermal tides or stationary planetary waves, with amplitudes two times larger than predicted.Note
6 month embargo; published online: 17 February 2020ISSN
0094-8276Version
Final published versionae974a485f413a2113503eed53cd6c53
10.1029/2019gl085646