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Photoelectrons and solar ionizing radiation at Mars: Predictions versus MAVEN observations
dc.contributor.authorPeterson, W. K.
dc.contributor.authorThiemann, E. M. B
dc.contributor.authorEparvier, Francis G.
dc.contributor.authorAndersson, Laila
dc.contributor.authorFowler, C. M.
dc.contributor.authorLarson, Davin
dc.contributor.authorMitchell, Dave
dc.contributor.authorMazelle, Christian
dc.contributor.authorFontenla, Juan
dc.contributor.authorEvans, J. Scott
dc.contributor.authorXu, Shaosui
dc.contributor.authorLiemohn, Mike
dc.contributor.authorBougher, Stephen
dc.contributor.authorSakai, Shotaro
dc.contributor.authorCravens, T. E.
dc.contributor.authorElrod, M. K.
dc.contributor.authorBenna, M.
dc.contributor.authorMahaffy, P.
dc.contributor.authorJakosky, Bruce
dc.date.accessioned2016-11-18T21:23:20Z
dc.date.available2017-11-01T15:31:29Zen
dc.date.issued2016-09
dc.identifier.citationPeterson, W. K.; Thiemann, E. M. B; Eparvier, Francis G.; Andersson, Laila; Fowler, C. M.; Larson, Davin; Mitchell, Dave; Mazelle, Christian; Fontenla, Juan; Evans, J. Scott; Xu, Shaosui; Liemohn, Mike; Bougher, Stephen; Sakai, Shotaro; Cravens, T. E.; Elrod, M. K.; Benna, M.; Mahaffy, P.; Jakosky, Bruce (2016). "Photoelectrons and solar ionizing radiation at Mars: Predictions versus MAVEN observations." Journal of Geophysical Research: Space Physics 121(9): 8859-8870.
dc.identifier.issn2169-9380
dc.identifier.issn2169-9402
dc.identifier.urihttps://hdl.handle.net/2027.42/134435
dc.description.abstractUnderstanding the evolution of the Martian atmosphere requires knowledge of processes transforming solar irradiance into thermal energy well enough to model them accurately. Here we compare Martian photoelectron energy spectra measured at periapsis by Mars Atmosphere and Volatile Evolution MissioN (MAVEN) with calculations made using three photoelectron production codes and three solar irradiance models as well as modeled and measured CO2 densities. We restricted our comparisons to regions where the contribution from solar wind electrons and ions were negligible. The two intervals examined on 19 October 2014 have different observed incident solar irradiance spectra. In spite of the differences in photoionization cross sections and irradiance spectra used, we find the agreement between models to be within the combined uncertainties associated with the observations from the MAVEN neutral density, electron flux, and solar irradiance instruments.Key PointsWe report Martian photoelectron energy spectra obtained on 19 October 2014We compare model energy spectra using observed EUV and XUV irradiances and in situ neutral densitiesWe find agreement between models and observations within experimental uncertainties
dc.publisherWiley Periodicals, Inc.
dc.subject.otherphotoelectron
dc.subject.otherobservation
dc.subject.othermodel
dc.subject.otherMars
dc.subject.otherthermosphere
dc.titlePhotoelectrons and solar ionizing radiation at Mars: Predictions versus MAVEN observations
dc.typeArticleen_US
dc.rights.robotsIndexNoFollow
dc.subject.hlbsecondlevelAstronomy and Astrophysics
dc.subject.hlbtoplevelScience
dc.description.peerreviewedPeer Reviewed
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/134435/1/jgra52870.pdf
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/134435/2/jgra52870_am.pdf
dc.identifier.doi10.1002/2016JA022677
dc.identifier.sourceJournal of Geophysical Research: Space Physics
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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