Reference : The structure and variability of Mars upper atmosphere as seen in MAVEN/IUVS dayglow ...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/190835
The structure and variability of Mars upper atmosphere as seen in MAVEN/IUVS dayglow observations
English
Jain, S. K. [Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder, Colorado USA]
Stewart, A. I. F. [Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder, Colorado USA]
Schneider, N. M. [Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder, Colorado USA]
Deighan, J. [Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder, Colorado USA]
Stiepen, Arnaud mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
Evans, J. S. [Computational Physics, Inc. Springfield, Virginia USA]
Stevens, M. H. [Space Science Division Naval Research Laboratory Washington, District of Columbia USA]
Chaffin, M. S. [Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder, Colorado USA]
Crismani, M. [Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder, Colorado USA]
Mcclintock, W. E. [Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder, Colorado USA]
Clarke, J. T. [Center for Space Physics Boston University Boston, Massachusetts USA]
Holsclaw, G. M. [Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder, Colorado USA]
Lo, D. Y. [Lunar and Planetary Laboratory University of Arizona Tucson, Arizona USA]
Lefèvre, F. [LATMOS CNRS Guyancourt France]
Montmessin, F. [LATMOS CNRS Guyancourt France]
Thiemann, E. M. B. [Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder, Colorado USA]
Eparvier, F. [Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder, Colorado USA]
Jakosky, B. M. [Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder, Colorado USA]
2015
Geophysical Research Letters
Blackwell Publishing
Yes (verified by ORBi)
International
0094-8276
1944-8007
[en] Dayglow ; IUVS ; Mars ; MAVEN ; Atmospheric structure ; Emission spectroscopy ; Satellites ; Solar energy ; Heliocentric distances ; Seasonal variability ; Simultaneous observation ; Volatile evolution ; Upper atmosphere
[en] We report a comprehensive study of Mars dayglow observations focusing on upper atmospheric structure and seasonal variability. We analyzed 744 vertical brightness profiles comprised of ∼109,300 spectra obtained with the Imaging Ultraviolet Spectrograph (IUVS) aboard the Mars Atmosphere and Volatile EvolutioN (MAVEN) satellite. The dayglow emission spectra show features similar to previous UV measurements at Mars. We find a significant drop in thermospheric scale height and temperature between LS = 218° and LS = 337-352°, attributed primarily to the decrease in solar activity and increase in heliocentric distance. We report the detection of a second, low-altitude peak in the emission profile of OI 297.2 nm, confirmation of the prediction that the absorption of solar Lyman alpha emission is an important energy source there. The CO2+ UV doublet peak intensity is well correlated with simultaneous observations of solar 17-22 nm irradiance at Mars. © 2015. American Geophysical Union. All Rights Reserved.
http://hdl.handle.net/2268/190835
10.1002/2015GL065419

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