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Fog phenomena on Mars

Möhlmann, Diedrich T.F. and Niemand, Monika and Formisano, Vittorio and Savijärvi, Hannu and Wolkenberg, Paulina (2009) Fog phenomena on Mars. Planetary and Space Science, 57, pp. 1987-1992. Elsevier. doi: 10.1016/j.pss.2009.08.003. ISSN 0032-0633.

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Mars Express High Resolution Stereo Camera (HRSC) images show impressive morning fog features at Valles Marineris and other regions of the surface of Mars. Temperatures have been determined, simultaneously to the imaging by Mars Express Planetary Fourier Spectrometer (PFS). This identifies water ice rather than frozen CO2 as the cause of the fog observations in Valles Marineris. Numerical estmates of the water vapor pressure, and the related atmospheric water content, at the frost-point (temperature of freezing or "re-sublimation" of water vapor) by a 1-dimensional planetary boundary layer model indicate that conditions in the planetary boundayer layer can indeed temorarily favor the formation of ice particles. A systematic registration of sites of fog observations shows preferred regions and seasons on Mars for fog phenomena. In the first instance, the fog penomena seem to be induced or supported by orographic effects but not directly by the distribution pattern of the atmospheric vapor or by the regional subsurface water content. This paper documents and thermodynamically verifies the existence of fog of water ice particles in the near-surface atmosphere of Mars.

Item URL in elib:https://elib.dlr.de/61007/
Document Type:Article
Title:Fog phenomena on Mars
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Niemand, MonikaInstitute for Meteorology, Freie Universität BerlinUNSPECIFIED
Formisano, VittorioI.F.S.I, INAF, Rome, ItalyUNSPECIFIED
Savijärvi, HannuDepartment of Physics, University of Helsinki, FinlandUNSPECIFIED
Wolkenberg, PaulinaI.F.S.I, INAF, Rome, ItalyUNSPECIFIED
Journal or Publication Title:Planetary and Space Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.pss.2009.08.003
Page Range:pp. 1987-1992
Keywords:Mars, Atmosphere, Water clouds, Fog, Meteorology
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Projekt MARS-EXPRESS / HRSC (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Pieth, Susanne
Deposited On:08 Dec 2009 08:43
Last Modified:08 Mar 2018 18:48

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