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Background levels o...
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Webster, Christopher R.NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
(author)
Background levels of methane in Mars' atmosphere show strong seasonal variations
- Article/chapterEnglish2018
Publisher, publication year, extent ...
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American Association for the Advancement of Science,2018
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:ltu-69292
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https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69292URI
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https://doi.org/10.1126/science.aaq0131DOI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Validerad;2018;Nivå 2;2018-06-11 (andbra)
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Variable levels of methane in the martian atmosphere have eluded explanation partly because the measurements are not repeatable in time or location. We report in situ measurements at Gale crater made over a 5-year period by the Tunable Laser Spectrometer on the Curiosity rover. The background levels of methane have a mean value 0.41 ± 0.16 parts per billion by volume (ppbv) (95% confidence interval) and exhibit a strong, repeatable seasonal variation (0.24 to 0.65 ppbv). This variation is greater than that predicted from either ultraviolet degradation of impact-delivered organics on the surface or from the annual surface pressure cycle. The large seasonal variation in the background and occurrences of higher temporary spikes (~7 ppbv) are consistent with small localized sources of methane released from martian surface or subsurface reservoirs.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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Mahaffy, Paul R.NASA Goddard Space Flight Center, Greenbelt, MD, USA
(author)
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Atreya, Sushil K.Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, USA
(author)
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Moores, John E.Department of Earth and Space Science and Engineering, York University, Toronto, ON, Canada
(author)
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Flesch, Gregory J.NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
(author)
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Malespin, CharlesNASA Goddard Space Flight Center, Greenbelt, MD, USA
(author)
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McKay, Christopher P.NASA Ames Research Center, Moffett Field, CA, USA
(author)
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Martinez, GermanDepartment of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, USA
(author)
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Smith, Christina L.Department of Earth and Space Science and Engineering, York University, Toronto, ON, Canada
(author)
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Martin-Torres, JavierLuleå tekniska universitet,Rymdteknik,Instituto Andaluz de Ciencias de la Tierra, Granada, Spain(Swepub:ltu)javmar
(author)
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Gomez-Elvira, JavierCentro de Astrobiología, Instituto National de Tecnica Aerospacial, Madrid, Spain
(author)
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Zorzano, Maria-PazLuleå tekniska universitet,Rymdteknik,Centro de Astrobiología, Instituto National de Tecnica Aerospacial, Madrid, Spain(Swepub:ltu)marzor
(author)
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Wong, Michael H.Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, USA
(author)
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Trainer, Melissa G.NASA Goddard Space Flight Center, Greenbelt, MD, USA
(author)
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Steele, AndrewGeophysical Laboratory, Carnegie Institution for Science, Washington, DC, USA
(author)
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Archer Jr., DougJacobs Technology, NASA Johnson Space Center, Houston, TX, USA
(author)
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Sutter, BradJacobs Technology, NASA Johnson Space Center, Houston, TX, USA
(author)
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Coll, Patrice J.Laboratoire Interuniversitaire des Systèmes Atmosphériques, Creteil Cedex, France
(author)
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Freissinet, CarolineLaboratoire Atmosphères, Milieux, Observations Spatiales, Paris Cedex 05, France
(author)
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Meslin, Pierre-YvesInstitut de Recherche en Astrophysique et Planétologie, Toulouse, France
(author)
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Gough, Raina V.Department of Chemistry and Biochemistry and Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
(author)
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House, Christopher H.Department of Geosciences, Pennsylvania State University, University Park, PA, USA
(author)
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Pavlov, AlexanderNASA Goddard Space Flight Center, Greenbelt, MD, USA
(author)
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Eigenbrode, Jeenifer L.NASA Goddard Space Flight Center, Greenbelt, MD, USA
(author)
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Glavin, Daniel P.NASA Goddard Space Flight Center, Greenbelt, MD, USA
(author)
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Pearson, John C.NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
(author)
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Keymeulen, DidierNASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
(author)
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Christensen, Lance E.NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
(author)
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Schwenzer, SusanneSchool of Environment, Earth and Ecosystem Sciences, Open University, Milton Keynes, UK
(author)
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Navarro-Gonzalez, RafaelInstituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Mexico City, Mexico
(author)
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Pla-García, JorgeCentro de Astrobiología, Instituto National de Tecnica Aerospacial, Madrid, Spain; Space Science Institute, Boulder, CO, USA
(author)
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Rafkin, Scot C. R.Department of Space Studies, Southwest Research Institute Boulder, Boulder, CO, USA
(author)
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Vicente-Retortillo, ÁlvaroDepartment of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, USA
(author)
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Kahanpää, HenrikFinnish Meteorological Institute, Helsinki, Finland
(author)
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Viudez-Moreiras, DanielCentro de Astrobiología, Instituto National de Tecnica Aerospacial, Madrid, Spain
(author)
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Smith, Michael D.NASA Goddard Space Flight Center, Greenbelt, MD, USA
(author)
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Harri, Ari-MattiFinnish Meteorological Institute, Helsinki, Finland
(author)
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Genzer, MariaFinnish Meteorological Institute, Helsinki, Finland
(author)
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Hassler, Donald M.Department of Space Studies, Southwest Research Institute Boulder, Boulder, CO, USA
(author)
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Lemmon, MarkDepartment of Atmospheric Sciences, Texas A&M University, College Station, TX, USA
(author)
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Crisp, JoyNASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
(author)
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Sander, Stanley P.NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
(author)
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Zurek, Richard W.NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
(author)
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Vasavada, Ashwin R.NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
(author)
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NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USANASA Goddard Space Flight Center, Greenbelt, MD, USA
(creator_code:org_t)
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In:Science: American Association for the Advancement of Science360:6393, s. 1093-10960036-80751095-9203
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Webster, Christo ...
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Mahaffy, Paul R.
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Atreya, Sushil K ...
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Moores, John E.
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Flesch, Gregory ...
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Malespin, Charle ...
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McKay, Christoph ...
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Martinez, German
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Smith, Christina ...
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Martin-Torres, J ...
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Gomez-Elvira, Ja ...
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Zorzano, Maria-P ...
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Wong, Michael H.
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Trainer, Melissa ...
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Steele, Andrew
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Archer Jr., Doug
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Sutter, Brad
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Coll, Patrice J.
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Freissinet, Caro ...
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Meslin, Pierre-Y ...
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Gough, Raina V.
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House, Christoph ...
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Pavlov, Alexande ...
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Eigenbrode, Jeen ...
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Glavin, Daniel P ...
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Pearson, John C.
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Keymeulen, Didie ...
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Christensen, Lan ...
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Schwenzer, Susan ...
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Navarro-Gonzalez ...
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Pla-García, Jorg ...
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Rafkin, Scot C. ...
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Vicente-Retortil ...
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Kahanpää, Henrik
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Viudez-Moreiras, ...
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Smith, Michael D ...
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Harri, Ari-Matti
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Genzer, Maria
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Hassler, Donald ...
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Lemmon, Mark
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Sander, Stanley ...
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Zurek, Richard W ...
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