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21 August 2009

This figure compares time versus height cross sections of ice abundance (expressed as the gas phase equivalent mixing ratio, Qice) from a) SOFIE observations and from b) a thermodynamic equilibrium model using SOFIE temperatures and water vapor as input.  The results are based on 3-day averages and dashed lines indicate the mesopause height.  The good agreement between SOFIE and the model suggests that on average PMCs exist in equilibrium with the surrounding environment.  

Credit: Solar Occultation for Ice Experiment Data Processing Team at GATS, Inc.


SOFIE Ice Abundance

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