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Early MAVEN Deep Dip campaign reveals thermosphere and ionosphere variability

Stephen Bougher 1 Bruce Jakosky 2 Jasper Halekas 3 Joseph Grebowsky 4 Janet Luhmann 5 Paul Mahaffy 4 Jack Connerney 4 F. Eparvier 2 Robert Ergun 2 Davin Larson 5 Jim Mcfadden 5 David Mitchell 5 Nick Schneider 2 Richard Zurek 6 Christian Mazelle 7 Laila Andersson 2 David Andrews 8 Darren Baird 9 Daniel N. Baker 2 Jared M. Bell 10 Mehdi Benna 4 David Brain 2 Michael Chaffin 2 Phillip Chamberlin 4 Jean-Yves Chaufray 11 John Clarke 12 Glyn Collinson 4 Mike Combi 1 Frank Crary 2 Thomas Cravens 13 Matteo Crismani 2 Shannon Curry 5 David Curtis 5 Justin Deighan 2 Greg Delory 5 Ryan Dewey 2 Gina Dibraccio 4 Chuanfei Dong 1 Yaxue Dong 2 P. Dunn 5 M. Elrod 4 S. England 5 Anders Eriksson 8 Jared Espley 4 S. Evans 14 Xiaohua Fang 2 Matthew Fillingim 5 Kier Fortier 2 Chris M. Fowler 2 Allan J. Fox 15 Hannes Gröller 16 S. Guzewich 4 T. Hara 5 Y. Harada 5 G. Holsclaw 2 S. K. Jain 2 R. Jolitz 5 François Leblanc 11 Christina O. Lee 5 Y. Lee 1 Franck Lefèvre 17 Robert Lillis 5 R. Livi 5 D. Lo 16 Yingjuan Ma 18 M. Mayyasi 12 William Mcclintock 2 T. Mcenulty 2 Ronan Modolo 11 Franck Montmessin 17 M. Morooka 2 Andrew Nagy 1 K. Olsen 1 W. Peterson 2 A. Rahmati 13 S. Ruhunusiri 3 C. T. Russell 18 S. Sakai 13 Jean-André Sauvaud 7 Kanako Seki 19 Morgan Steckiewicz 7 M. Stevens 20 A. I. F. Stewart 2 Arnaud Stiepen 2 S. Stone 16 V. Tenishev 1 E. Thiemann 2 R. Tolson 10 Dominique Toublanc 7 M. Vogt 12 T. Weber 2 P. Withers 12 T. Woods 2 Roger Yelle 16
1 CLaSP - Department of Climate and Space Sciences and Engineering
2 LASP - Laboratory for Atmospheric and Space Physics [Boulder]
3 Department of Physics and Astronomy [Ames, Iowa]
4 GSFC - NASA Goddard Space Flight Center
5 SSL - Space Sciences Laboratory [Berkeley]
6 JPL - Jet Propulsion Laboratory
7 IRAP - Institut de recherche en astrophysique et planétologie
8 IRF - Swedish Institute of Space Physics [Uppsala]
9 JSC - NASA Johnson Space Center
10 NIA - National Institute of Aerospace [Hampton]
11 HEPPI - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
12 Department of Astronomy [Boston]
13 Department of Physics and Astronomy [Lawrence Kansas]
14 Computational Physics, Inc.
15 Department of Physics [Dayton]
16 LPL - Lunar and Planetary Laboratory [Tucson]
17 IMPEC - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
18 IGPP - Institute of Geophysics and Planetary Physics [Los Angeles]
19 STEL - Solar-Terrestrial Environment Laboratory [Nagoya]
20 NRL - Naval Research Laboratory
Abstract : The Mars Atmosphere and Volatile Evolution (MAVEN) mission, during the second of its Deep Dip campaigns, made comprehensive measurements of martian thermosphere and ionosphere composition, structure, and variability at altitudes down to ~130 kilometers in the subsolar region. This altitude range contains the diffusively separated upper atmosphere just above the well-mixed atmosphere, the layer of peak extreme ultraviolet heating and primary reservoir for atmospheric escape. In situ measurements of the upper atmosphere reveal previously unmeasured populations of neutral and charged particles, the homopause altitude at approximately 130 kilometers, and an unexpected level of variability both on an orbit-to-orbit basis and within individual orbits. These observations help constrain volatile escape processes controlled by thermosphere and ionosphere structure and variability.
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https://hal-insu.archives-ouvertes.fr/insu-01227156
Contributor : Catherine Cardon <>
Submitted on : Tuesday, November 10, 2015 - 2:53:56 PM
Last modification on : Thursday, August 6, 2020 - 12:06:02 PM

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INSU | CNRS | OMP-IRAP | UPMC | UVSQ | LATMOS | OMP | UNIV-PARIS-SACLAY | SORBONNE-UNIVERSITE | UNIV-TLSE3 | SU-SCIENCES

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Stephen Bougher, Bruce Jakosky, Jasper Halekas, Joseph Grebowsky, Janet Luhmann, et al.. Early MAVEN Deep Dip campaign reveals thermosphere and ionosphere variability. Science, American Association for the Advancement of Science, 2015, 350 (6261), pp.aad0459. ⟨10.1126/science.aad0459⟩. ⟨insu-01227156⟩

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