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    • VL1/VL2 MARS LCS DERIVED ATMOSPHERIC OPTICAL DEPTH V1.0

    Metadata Updated: August 22, 2025

    Viking Lander camera images of the Sun were used to compute total normal atmospheric optical depth at the two landing sites over a period of about 900 Mars days. The data set contains 1044 measurements of optical depth and associated error estimates. The optical depths were derived from Sun diode images, which were obtained by the Lander cameras at a wavelength of 0.67 micrometers. Note that no images of Phobos were used in deriving this data set. Studies of diurnal, seasonal, and annual variations in optical depth, surface-based observations of great dust storms, and analyses of the contributions of ice haze and dust particles to the observed optical depth, have been carried out using these data. See COLBURN_ETAL_1989, POLLACK_ETAL_1977, and POLLACK_ETAL_1977 for further information on the derivation and interpretation of this data set.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: us-pd

    Downloads & Resources

    References

    https://pds.nasa.gov

    Dates

    Metadata Created Date January 31, 2023
    Metadata Updated Date August 22, 2025
    Data Update Frequency irregular

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 31, 2023
    Metadata Updated Date August 22, 2025
    Publisher National Aeronautics and Space Administration
    Maintainer
    Identifier urn:nasa:pds:context_pds3:data_set:data_set.vl1-vl2-m-lcs-5-atmos-optical-depth-v1.0_iuqz-szqp
    Data First Published 2021-05-21
    Data Last Modified 2025-07-17
    Category Earth Science
    Public Access Level public
    Data Update Frequency irregular
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id dd4f85c4-7fcf-4529-a098-67425c04e7d5
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://pds.nasa.gov/ds-view/pds/viewDataset.jsp?dsid=VL1%2FVL2-M-LCS-5-ATMOS-OPTICAL-DEPTH-V1.0
    License http://www.usa.gov/publicdomain/label/1.0/
    Program Code 026:005
    Related Documents https://pds.nasa.gov
    Source Datajson Identifier True
    Source Hash 7625d3d36c4a72e595dd1d1e7e478d38666a05c8a7f3ce6323b321d21100c908
    Source Schema Version 1.1

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