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2014•NASA STI Repository (National Aeronautics and Space Administration)Open access

Independent Verification of Mars-GRAM 2010 with Mars Climate Sounder Data

Hilary L. Justh, K. Lee Burns

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Abstract

Results of Current Independent Verification Study at Lower Altitudes: Mars-GRAM 2010 Versus MCS ComparisonFour cases were selected for analysis.The first three cases represent L s values spanning the expected landing dates for the 2020 Rover mission, for latitudes of 0°, -25° and 60°.The fourth case is a dust season case at 20° latitude.Both aggregate and mean density profiles were compared to Mars-GRAM outputs using appropriate case-specific input values.Profiles of density and density ratios (Mars-GRAM/MCS) were computed with results shown in Figure 2. All cases show good comparison, with mean density ratios close to identity.Departures are noted but no systematic trend is apparent across cases.

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Results of Current Independent Verification Study at Lower Altitudes: Mars-GRAM 2010 Versus MCS ComparisonFour cases were selected for analysis.The first three cases represent L s values spanning the expected landing dates for the 2020 Rover mission, for latitudes of 0°, -25° and 60°.The fourth case is a dust season case at 20° latitude.Both aggregate and mean density profiles were compared to Mars-GRAM outputs using appropriate case-specific input values.Profiles of density and density ratios (Mars-GRAM/MCS) were computed with results shown in Figure 2. All cases show good comparison, with mean density ratios close to identity.Departures are noted but no systematic trend is apparent across cases.

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Available abstract

Results of Current Independent Verification Study at Lower Altitudes: Mars-GRAM 2010 Versus MCS ComparisonFour cases were selected for analysis.The first three cases represent L s values spanning the expected landing dates for the 2020 Rover mission, for latitudes of 0°, -25° and 60°.The fourth case is a dust season case at 20° latitude.Both aggregate and mean density profiles were compared to Mars-GRAM outputs using appropriate case-specific input values.Profiles of density and density ratios (Mars-GRAM/MCS) were computed with results shown in Figure 2. All cases show good comparison, with mean density ratios close to identity.Departures are noted but no systematic trend is apparent across cases.

Key concepts: Mars Exploration Program, Exploration of Mars, Mars landing, Environmental science, Atmosphere of Mars, Remote sensing, Martian, Meteorology

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