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Intercalibration of Mars Global Surveyor DatasetsThe calibration and validation of satellite soundings of atmospheric variables is always a difficult prospect, but this difficulty is greatly magnified when the measurements are made at a different planet, whose meteorology is poorly known and poorly constrained, and for which there are virtually no prospects of obtaining ground truth. The Mars Global Surveyor which has been circling Mars in its mapping orbit since early 1999 includes a variety of instruments capable of making atmospheric observations: the Thermal Emission Spectrometer (TES) which takes more than 100,000 nadir-view infrared spectra per day (although these observations are confined to the 2am - 2pm time of the sun-fixed orbit); much less frequent TES limb scans (still only at 2am and 2pm); the Mars Horizon Sensor Assembly measures side-looking broadband 15 micrometer radiation; Radio Science occultations at favorable seasons give high resolution temperature profiles; the Mars orbiter Camera and Mars Orbiter Laser Altimeter have made water, dust, and carbon dioxide cloud detections. These observations are now being supplemented by high-resolution 15 micron measurements by THEMIS on Mars Odyssey. Thus, all of these observations are made at different times and places. Data assimilation techniques are being used to fuse this vast array of observations into a single dataset that best represents our understanding of the Martian atmosphere, its current meteorological state, and the relevant instrumental properties.
Document ID
20020073066
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Houben, Howard
(Bay Area Environmental Research Inst. United States)
Bergstrom, R. W.
(Bay Area Environmental Research Inst. United States)
Hollingsworth, J.
(San Jose State Univ. United States)
Smith, M.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Martin, T.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Hinson, D.
(Stanford Univ. United States)
DeVincenizi, D.
Date Acquired
August 20, 2013
Publication Date
May 8, 2002
Subject Category
Lunar And Planetary Science And Exploration
Meeting Information
Meeting: Committee on Space Research (COSPAR) 2002
Location: Houston, TX
Country: United States
Start Date: October 10, 2002
End Date: October 19, 2002
Funding Number(s)
PROJECT: RTOP 344-34-21-04
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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