Article (Scientific journals)
Study of the Martian cold oxygen corona from the OI 130.4nm by IUVS/MAVEN
Chaufray, J. Y.; Deighan, J.; Chaffin, M. S. et al.
2015In Geophysical Research Letters
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Keywords :
Exosphere; Mars; Oxygen; Calibration; Ionosphere; Radiative transfer; Solar energy; Absolute calibration; Atomic oxygen density; Radiative transfer model; Resonant scattering; Thermospheric model; Volatile evolution
Abstract :
[en] First observations of the OI 130.4nm resonant line performed by the Imaging Ultraviolet Spectrograph (IUVS) aboard the Mars Atmosphere and Volatile EvolutioN mission (MAVEN) are presented in this paper. This emission line is observed during the different orbit phases of MAVEN. The atomic oxygen density and the temperature at 200km are retrieved from an automatic pipeline using a radiative transfer model for resonant scattering lines for a selection of coronal profiles. These selected profiles are representative of the coronal scans done during the first months of the mission (from November 2014 to January 2015). The derived oxygen density and the temperature near the exobase are in the predicted range by the current thermospheric models of Mars for moderate solar activity, and some diurnal variations are observed. However, the absolute calibration of the instrument significantly limits the accuracy of density and temperature results. © 2015. American Geophysical Union. All Rights Reserved.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Chaufray, J. Y.;  LATMOS-IPSL, CNRS, UVSQ, UMPC Guyancourt France
Deighan, J.;  LASP University of Colorado Boulder Boulder, Colorado USA
Chaffin, M. S.;  LASP University of Colorado Boulder Boulder, Colorado USA
Schneider, N. M.;  LASP University of Colorado Boulder Boulder, Colorado USA
Mcclintock, W. E.;  LASP University of Colorado Boulder Boulder, Colorado USA
Stewart, A. I. F.;  LASP University of Colorado Boulder Boulder, Colorado USA
Jain, S. K.;  LASP University of Colorado Boulder Boulder, Colorado USA
Crismani, M.;  LASP University of Colorado Boulder Boulder, Colorado USA
Stiepen, Arnaud ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Holsclaw, G. M.;  LASP University of Colorado Boulder Boulder, Colorado USA
Clarke, J. T.;  Center for Space Physics Boston University Boston, Massachusetts USA
Montmessin, F.;  LATMOS-IPSL, CNRS, UVSQ, UMPC Guyancourt France
Eparvier, F. G.;  LASP University of Colorado Boulder Boulder, Colorado USA
Thiemann, E. M. B.;  LASP University of Colorado Boulder Boulder, Colorado USA
Chamberlin, P. C.;  NASA Goddard Space Flight Center Greenbelt, Maryland USA
Jakosky, Bruce M.;  LASP University of Colorado Boulder Boulder, Colorado USA
More authors (6 more) Less
Language :
English
Title :
Study of the Martian cold oxygen corona from the OI 130.4nm by IUVS/MAVEN
Publication date :
2015
Journal title :
Geophysical Research Letters
ISSN :
0094-8276
eISSN :
1944-8007
Publisher :
Blackwell Publishing Ltd
Peer reviewed :
Peer Reviewed verified by ORBi
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