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CRISM Limb Observations of Aerosols and Water VaporNear-infrared spectra taken in a limb-viewing geometry by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on-board the Mars Reconnaissance Orbiter (MRO) provide a useful tool for probing atmospheric structure. Here we describe preliminary work on the retrieval of vertical profiles of aerosols and water vapor from the CRISM limb observations. The first full set of CRISM limb observations was taken in July 2009, with subsequent limb observations planned once every two months. Each set of limb observations contains about four dozen scans across the limb giving pole-to-pole coverage for two orbits at roughly 100 and 290 W longitude. Radiative transfer modeling taking account of aerosol scattering in the limb-viewing geometry is used to model the observations. The retrievals show the height to which dust and water vapor extend and the location and height of water ice clouds. Results from the First set of CRISM limb observations (July 2009, Ls=300) show dust aerosol well-mixed to about three scale heights above the surface with thin water ice clouds above the dust near the equator and at mid-northern latitudes. Water vapor is concentrated at high southern latitudes.
Document ID
20090042721
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Smith, Michael D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wolff, M.J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Clancy, R.T.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Seelos, F.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Murchie, S.L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
December 14, 2009
Subject Category
Lunar And Planetary Science And Exploration
Meeting Information
Meeting: AGU Fall Meeting
Location: San Francisco, CA
Country: United States
Start Date: December 14, 2009
End Date: December 18, 2009
Distribution Limits
Public
Copyright
Other

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