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19/6/2018: séminaire de Michael Wolff

Mapping Water Ice Clouds on Mars with MRO/MARCI
Quand ? Le 19/06/2018,
de 10:00 à 12:00
Où ? Salle de réunion du LMD/Jussieu (T45-55, 3e étage)
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Téléphone 0144272799
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The MARCI wide-field imager onboard the Mars Reconnaissance Orbiter has been providing daily (almost) global maps of Mars (for local times generally between 15h00 and 16h30) for almost 12 years.  Of particular note to atmospheric studies is that MARCI has a UV channel that emphasizes the contributions of water ice clouds while minimizing those associated with dust and surface properties (and their uncertainties).  As such, the MARCI data directly provide for the generation of  “daily global maps” of water ice optical depth for use in dynamical modeling studies and atmospheric remote sensing (i.e., gas abundance) retrievals.  In this talk, we discuss the observations and techniques used to generate the water ice optical depth retrievals, while also providing a summary of some of the general behaviors observed.  We will also compare the observations to GCM models across various spatial and temporal domains.  It will be really fun.