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Background levels of methane in Mars’ atmosphere show strong seasonal variations

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Science  08 Jun 2018:
Vol. 360, Issue 6393, pp. 1093-1096
DOI: 10.1126/science.aaq0131

Article Information

vol. 360 no. 6393 1093-1096

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History: 
  • Received for publication September 20, 2017
  • Accepted for publication May 4, 2018
  • .

Author Information

  1. Christopher R. Webster1,*,
  2. Paul R. Mahaffy2,
  3. Sushil K. Atreya3,
  4. John E. Moores4,
  5. Gregory J. Flesch1,
  6. Charles Malespin2,
  7. Christopher P. McKay5,
  8. German Martinez3,
  9. Christina L. Smith4,
  10. Javier Martin-Torres6,7,
  11. Javier Gomez-Elvira8,
  12. Maria-Paz Zorzano6,8,
  13. Michael H. Wong3,
  14. Melissa G. Trainer2,
  15. Andrew Steele9,
  16. Doug Archer Jr.10,
  17. Brad Sutter10,
  18. Patrice J. Coll11,
  19. Caroline Freissinet12,
  20. Pierre-Yves Meslin13,
  21. Raina V. Gough14,
  22. Christopher H. House15,
  23. Alexander Pavlov2,
  24. Jennifer L. Eigenbrode2,
  25. Daniel P. Glavin2,
  26. John C. Pearson1,
  27. Didier Keymeulen1,
  28. Lance E. Christensen1,
  29. Susanne P. Schwenzer16,
  30. Rafael Navarro-Gonzalez17,
  31. Jorge Pla-García8,18,
  32. Scot C. R. Rafkin19,
  33. Álvaro Vicente-Retortillo3,
  34. Henrik Kahanpää20,
  35. Daniel Viudez-Moreiras8,
  36. Michael D. Smith2,
  37. Ari-Matti Harri20,
  38. Maria Genzer20,
  39. Donald M. Hassler19,
  40. Mark Lemmon21,
  41. Joy Crisp1,
  42. Stanley P. Sander1,
  43. Richard W. Zurek1,
  44. Ashwin R. Vasavada1
  1. 1NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.
  2. 2NASA Goddard Space Flight Center, Greenbelt, MD, USA.
  3. 3Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, USA.
  4. 4Department of Earth and Space Science and Engineering, York University, Toronto, ON, Canada.
  5. 5NASA Ames Research Center, Moffett Field, CA, USA.
  6. 6Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, Luleå, Sweden.
  7. 7Instituto Andaluz de Ciencias de la Tierra, Granada, Spain.
  8. 8Centro de Astrobiología, Instituto National de Tecnica Aerospacial, Madrid, Spain.
  9. 9Geophysical Laboratory, Carnegie Institution for Science, Washington, DC, USA.
  10. 10Jacobs Technology, NASA Johnson Space Center, Houston, TX, USA.
  11. 11Laboratoire Interuniversitaire des Systèmes Atmosphériques, Creteil Cedex, France.
  12. 12Laboratoire Atmosphères, Milieux, Observations Spatiales, Paris Cedex 05, France.
  13. 13Institut de Recherche en Astrophysique et Planétologie, Toulouse, France.
  14. 14Department of Chemistry and Biochemistry and Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA.
  15. 15Department of Geosciences, Pennsylvania State University, University Park, PA, USA.
  16. 16School of Environment, Earth and Ecosystem Sciences, Open University, Milton Keynes, UK.
  17. 17Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Mexico City, Mexico.
  18. 18Space Science Institute, Boulder, CO, USA.
  19. 19Department of Space Studies, Southwest Research Institute Boulder, Boulder, CO, USA.
  20. 20Finnish Meteorological Institute, Helsinki, Finland.
  21. 21Department of Atmospheric Sciences, Texas A&M University, College Station, TX, USA.
  1. *Corresponding author. Email: chris.r.webster{at}jpl.nasa.gov

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