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High-Altitude CO2 Clouds on Mars: OMEGA and HRSC Observations

Määttänen, Anni and Montmessin, Franck and Gondet, Brigitte and Hoffmann, Harald and Scholten, Frank and Hauber, Ernst and Gonzalez-Galindo, Francisco and Forget, François and Bibring, J.-P. and Bertaux, J.-L. and Neukum, Gerhard (2009) High-Altitude CO2 Clouds on Mars: OMEGA and HRSC Observations. Third International Workshop on Mars Polar Energy Balance and the CO2 Cycle, July 21-24, 2009, Seattle Washington, USA.

Full text not available from this repository.

Official URL: http://www.lpi.usra.edu/meetings/mpeb2009/pdf/7023.pdf

Abstract

The Martian climate hosts a rare phenomenon of condensation of the bulk atmosphere. CO2 condenses on the polar ice caps, but also forms clouds in the atmosphere. The existence of low-level, convective CO2 clouds in the polar night was indirectly discovered by MOLA and modeled in some studies. Recently several satellite instruments have observed CO2 clouds also near the equator, but at high altitudes where the temperatures are low enough for CO2 condensation. Montmessin et al. identified spectroscopically from MEx/OMEGA observations these high-altitude clouds to be composed of CO2 ice crystals by modeling the CO2 ice spectral signature that was observed in a deep CO2 gas absorption band at around 4.3 μm. In this work we have used the OMEGA and HRSC observations to map the occurrences of the high-altitude CO2 clouds and their properties. We have also compared the observations to the predictions of the LMD Mars Global Climate Model (LMD-MGCM) and in particular its improved version that extends to the upper atmosphere.

Item URL in elib:https://elib.dlr.de/67514/
Document Type:Conference or Workshop Item (Speech)
Title:High-Altitude CO2 Clouds on Mars: OMEGA and HRSC Observations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Määttänen, AnniLaboratoire Atmosphères, Milieux, Observations Spatiales, CNRS/UVSQ/UPMC, 11 boulevard d’Alembert, 78280 Guyancourt, FranceUNSPECIFIED
Montmessin, FranckLaboratoire Atmosphères, Milieux, Observations Spatiales, CNRS/UVSQ/UPMC, 11 boulevard d’Alembert, 78280 Guyancourt, FranceUNSPECIFIED
Gondet, BrigitteInstitut d’astrophysique spatiale, Bâtiment 121, Université Paris XI, 91405 Orsay cedex, FranceUNSPECIFIED
Hoffmann, Haraldharald.hoffmann (at) dlr.deUNSPECIFIED
Scholten, Frankfrank.scholten (at) dlr.deUNSPECIFIED
Hauber, Ernsternst.hauber (at) dlr.deUNSPECIFIED
Gonzalez-Galindo, FranciscoLaboratoire de météorologie dynamique, CNRS/UPMC, 4 place Jussieu, 75252 Paris cedex 05, FranceUNSPECIFIED
Forget, FrançoisLaboratoire de météorologie dynamique, CNRS/UPMC, 4 place Jussieu, 75252 Paris cedex 05, FranceUNSPECIFIED
Bibring, J.-P.Institut d’astrophysique spatiale, Bâtiment 121, Université Paris XI, 91405 Orsay cedex, FranceUNSPECIFIED
Bertaux, J.-L.Laboratoire Atmosphères, Milieux, Observations Spatiales, CNRS/UVSQ/UPMC, 11 boulevard d’Alembert, 78280 Guyancourt, FranceUNSPECIFIED
Neukum, GerhardFreie Universität, Fachrichtung Planetologie und Fernerkundung, Malteserstr. 74-100, D-12249 Berlin, GermanyUNSPECIFIED
Date:2009
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:OMEGA, HRSC, Mars, High-Altitude CO2 Clouds
Event Title:Third International Workshop on Mars Polar Energy Balance and the CO2 Cycle
Event Location:Seattle Washington, USA
Event Type:international Conference
Event Dates:July 21-24, 2009
Organizer:Lunar and Planetary Institute
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: Scholten, Dipl.-Ing. Frank
Deposited On:06 Jan 2011 13:15
Last Modified:06 Jan 2011 13:15

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