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Viking 2 Orbiter Imaging Cloud Catalog (PDS)

NSSDCA ID: PSPA-00209

Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1971-11-14 to 1972-07-02

Description

This data set consists of a catalog of clouds observed in Viking Orbiter images. Seven 'cloud types' were defined according to easily observable objective morphologic criteria. The entire Viking Orbiter image data sets (over 50000 images) were examined at least twice, by two separate observers. Cloud occurrences were compiled by examining images for specific cloud morphologies, examining the same area at different times, utilizing limb images, and consulting photomosaics to determine the spatial relations of cloud obscurations. The data set contains details of the cloud occurrences and the images in which they were observed. The Viking Orbiter data cover a period from Ls 85 degrees (Earth year 1976) through Ls 140 degrees (Earth year 1980). These data have been used to infer near-surface wind directions, relative wind speed, static stability and humidity constraints, and qualitative atmospheric opacity conditions on a global basis over the Martian year. This dataset also contains cloud images from the Mariner 9 spacecraft.

Alternate Names

  • PDS VO2-M-ISS/VIS-5-CLOUD-V1.0
  • MR9/VO1/VO2-M-ISS/VIS-5-CLOUD-V1.0

Disciplines

  • Planetary Science: Atmospheres
  • Planetary Science: Geology and Geophysics

Old NSSDCA ID

  • 75-083A-01Z

Additional Information

Spacecraft

Experiments

Questions and comments about this data collection can be directed to: Dr. David R. Williams

 

Personnel

NameRoleOriginal AffiliationE-mail
Dr. Steven W. LeeData ProviderUniversity of Coloradosteven.lee@colorado.edu
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