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A full martian year of line-of-sight extinction within Gale Crater, Mars as acquired by the MSL Navcam through sol 900

Moore, Casey A. and Moores, John E. and Lemmon, Mark T. and Rafkin, Scot C.R. and Francis, Raymond and Pla-García, Jorge and Haberle, Robert M. and Zorzano, María-Paz and Martín-Torres, F. Javier and Burton, John R. and the MSL Science Team and DLR Collaborator (MSL Science Team), Reitz G. (2015) A full martian year of line-of-sight extinction within Gale Crater, Mars as acquired by the MSL Navcam through sol 900. Icarus, 264, pp. 102-108. Elsevier. DOI: 10.1016/j.icarus.2015.09.001 ISSN 0019-1035

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Official URL: http://dx.doi.org/10.1016/j.icarus.2015.09.001

Abstract

We report on line-of-sight extinction in northern Gale Crater, Mars as seen by the Mars Science Laboratory (MSL) rover, Curiosity from sol 100 to sol 900; a little more than an entire martian year. Navcam images oriented due north, which show the distant crater rim, the near ground and the sky allow the extinction due to dust within the crater to be determined. This line-of sight extinction is compared to a complementary dataset of column extinctions derived from Mastcam. The line-of-sight extinction within the crater is less than the column extinction for the majority of the martian year. This implies that the relatively low mixing ratio of dust within the crater as compared to the atmosphere above the crater rim persists through most of the year. This suggests relatively little mixing between the atmosphere above the crater and the atmosphere inside the crater and suggests that northern Gale Crater is a net sink of dust in the current era. The data does however show a yearly convergence of the line-of-sight extinction and the column-averaged extinction around Ls = 270–290°. This suggests that air above the crater mixes with air in the crater at this time, as predicted by mesoscale models. Matching line-of-sight and column extinction values are also seen around Ls ≈ 135°, a season that has only been observed once in this dataset, this is particularly interesting as the Rover Environmental Monitoring Station onboard Curiosity reports increased convective boundary layer heights in the same season.

Item URL in elib:https://elib.dlr.de/99582/
Document Type:Article
Title:A full martian year of line-of-sight extinction within Gale Crater, Mars as acquired by the MSL Navcam through sol 900
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Moore, Casey A.Centre for Research in Earth and Space Sciences, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada; camoore (at) yorku.caUNSPECIFIED
Moores, John E.Centre for Research in Earth and Space Sciences, York University, 4700 Keele Street, Toronto, ON M3J 1P3, CanadaUNSPECIFIED
Lemmon, Mark T.Texas A & M University, College Station, TX 77843, United StatesUNSPECIFIED
Rafkin, Scot C.R.Southwest Research Institute Boulder, Boulder, CO 80302, United StatesUNSPECIFIED
Francis, RaymondCentre for Planetary Science and Exploration, University of Western Ontario, London, ON, Canada and Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United StatesUNSPECIFIED
Pla-García, JorgeCentro de Astrobiología (CSIC-INTA), Torrejón de Ardoz, Madrid, SpainUNSPECIFIED
Haberle, Robert M.Ames Research Center, Naval Air Station, Moffett Field, Mountain View, CA 94035, United StatesUNSPECIFIED
Zorzano, María-PazCentro de Astrobiología (CSIC-INTA), Torrejón de Ardoz, Madrid, Spain and Division of Space Technology, Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, Kiruna, SwedenUNSPECIFIED
Martín-Torres, F. JavierDivision of Space Technology, Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, Kiruna, Sweden and Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Granada, SpainUNSPECIFIED
Burton, John R. and the MSL Science TeamCentre for Research in Earth and Space Sciences, York University, 4700 Keele Street, Toronto, ON M3J 1P3, CanadaUNSPECIFIED
DLR Collaborator (MSL Science Team), Reitz G.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.UNSPECIFIED
Date:2015
Journal or Publication Title:Icarus
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:264
DOI :10.1016/j.icarus.2015.09.001
Page Range:pp. 102-108
Publisher:Elsevier
ISSN:0019-1035
Status:Published
Keywords:Mars; Mars, atmosphere; Atmosphere, dynamics; Atmosphere, structure
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben MSL-Radiation
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:26 Nov 2015 15:30
Last Modified:06 Sep 2019 15:26

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