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Modeling a Transient Secondary Paleolunar Atmosphere: 3-D Simulations and Analysis
Columbia Univ, Ctr Climate Syst Res, New York, NY 10027 USA;NASA, Goddard Inst Space Studies, New York, NY 10025 USA.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy. NASA, Goddard Inst Space Studies, New York, NY 10025 USA; GSFC Sellers Exoplanet Environm Collaborat, Greenbelt, MD USA.ORCID iD: 0000-0003-3728-0475
NASA, Goddard Inst Space Studies, New York, NY 10025 USA;Columbia Univ, Dept Appl Phys & Appl Math, New York, NY USA.
Columbia Univ, Ctr Climate Syst Res, New York, NY 10027 USA;NASA, Goddard Inst Space Studies, New York, NY 10025 USA.
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2019 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 46, no 10, p. 5107-5116Article in journal (Refereed) Published
Abstract [en]

The lunar history of water deposition, loss, and transport postaccretion has become an important consideration in relation to the possibility of a human outpost on the Moon. Very recent work has shown that a secondary primordial atmosphere of up to 10 mbar could have been emplaced similar to 3.5 x 10(9) years ago due to volcanic outgassing from the maria. Using a zero-dimensional chemistry model, we demonstrate the temperature dependence of the resulting major atmospheric components (CO or CO2). We use a three-dimensional general circulation model to test the viability of such an atmosphere and derive its climatological characteristics. Based on these results, we then conjecture on its capability to transport volatiles outgassed from the maria to the permanently shadowed regions at the poles. Our preliminary results demonstrate that atmospheres as low as 1 mbar are viable and that permanent cold trapping of volatiles is only possible at the poles.

Place, publisher, year, edition, pages
AMER GEOPHYSICAL UNION , 2019. Vol. 46, no 10, p. 5107-5116
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Astronomy, Astrophysics and Cosmology
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URN: urn:nbn:se:uu:diva-390039DOI: 10.1029/2019GL082494ISI: 000471237500012OAI: oai:DiVA.org:uu-390039DiVA, id: diva2:1340390
Available from: 2019-08-05 Created: 2019-08-05 Last updated: 2019-08-05Bibliographically approved

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Way, Michael J.

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