MOD09Q1_006

MODIS/Terra Surface Reflectance 8-Day L3 Global 250m SIN Grid V006

Version 006
  • Abstract
    The MOD09Q1 Version 6 product provides an estimate of the surface spectral reflectance of Terra MODIS Bands 1-2 corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering. Provided along with the two 250 m MODIS bands is one additional layer, the Surface Reflectance QC 250 m band. For each pixel, a value is selected from all the acquisitions within the 8-day composite period. The criteria for the pixel choice include cloud and solar zenith. When several acquisitions meet the criteria the pixel with the minimum channel 3 (blue) value is used. Validation at stage 3 has been achieved for all MODIS Surface Reflectance products. Improvements/Changes from Previous Versions • Improvement to the aerosol retrieval and correction algorithm and use of new aerosol retrieval Look up Tables. • Refinements to the internal snow, cloud, and cloud shadow detection algorithms. Uses BRDF database to better constraint the different threshold used. • Processes ocean bands to create a new Surface Reflectance Ocean product and provide QA data sets for these bands. • Improved discrimination of salt pans from cloud and snow and flag salt pan in QA band.
  • Purpose
    Science Research
  • Version Description
    Collection Version 6 Processing and Reprocessing
  • DOI

    10.5067/MODIS/MOD09Q1.006

    https://doi.org

Data Identification Fields:

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    Data Dates
    Creation
    Last Revision
    Processing Level

    3

    Sensor Measurements

    Quality
    Collection Progress

    Active

    Access Constraints

    None

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • LAND SURFACE
    • SURFACE RADIATIVE PROPERTIES
    • REFLECTANCE

Acquisition Information Fields:

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Platforms
  • Earth Observation Satellites
    Terra
    Instruments
    • MODIS
Projects
Project Short Name Campaigns Project Dates
Terra
  • Terra
No dates provided.

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL MODIS Sinusoidal Tiling System CARTESIAN GEODETIC
    Tiling Identification Systems
    System Name Coordinate 1 Min Coordinate 1 Max Coordinate 2 Min Coordinate 2 Max
    MODIS Tile SIN 0.0 35.0 0.0 17.0
Location Keywords
    • GEOGRAPHIC REGION
    • GLOBAL

Data Centers

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  • LP DAAC
    ARCHIVER
    Land Processes Distributed Active Archive Center

    U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
    Sioux Falls, South Dakota 57198

    M-F, 8 a.m. to 4 p.m. Central Time
    • 605-594-6116
    • 866-573-3222
    • Email
    Contact Details

    LP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.

    The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.

    https://lpdaac.usgs.gov/
    • Home Page
  • NASA/GSFC/SED/ESD/TISL/MODAPS
    PROCESSOR
    MODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

    NASA/GSFC Code 922
    GREENBELT, Maryland 20771

    Contact Details

    Contact for data content concerns

Data Contacts

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  • LP DAAC User Services
    User Services
    LP DAAC User Services

    LP DAAC

    U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
    Sioux Falls, South Dakota 57198

    M-F, 8 a.m. to 4 p.m. Central Time
    • 605-594-6116
    • 866-573-3222
    • Email
    Contact Details

    LP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.

    The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.

    https://lpdaac.usgs.gov/
    • Home Page

Collection Citations Fields:

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