NASA Web-Enabled Landsat Data CONUS 30m Composites over Seasonal Periods V001

Version 001
  • Abstract
    The Web-Enabled Landsat Data (WELD) project funded by the National Aeronautics and Space Administration (NASA) is a collaboration between the United States Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center and the South Dakota State University Geospatial Sciences Center of Excellence (GSCE). WELD systematically generates 30 m composited Landsat Enhanced Thematic Mapper Plus (ETM+) mosaics of the United States and Alaska from 2002 – 2012 to provide consistent data for deriving land cover, geophysical, biophysical products for regional assessments of surface dynamics for effective studying of Earth system functioning. The Land Processes Distributed Active Archive Center (LP DAAC) is responsible for archive and distribution of NASA WELD, which includes the CONUS seasonal product suite. The WELD CONUS Seasonal products are defined Winter: December, January, February; Spring: March, April, May; Summer: June, July, August; Autumn: September, October, November. Data Set Characteristics: Image Dimensions: 5000 x 5000 Total Number Tiles: 501 US CONUS Tile Volume: 170 GB Compression Type: zip File Format: HDF4, GeoTIFF Map Projection: Albers Equal Area Datum: World Geodetic System 84 (WGS84) Pixel Size: 30 m
  • Version Description
    Initial WELD product suite including CONUS and Alaska at weekly, monthly, seasonal 3 month, and annual time steps.

Data Identification Fields:

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    Data Dates
    Last Revision
    Processing Level


    Geophysical Quantities at the sensor resolution or geolocated

    Collection Progress

    In Work

    Access Constraints

    The WELD products are freely available for educational, research, or commercial applications. If you use the WELD products please cite them following the WELD Citation guidelines.

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    Science Keywords

Acquisition Information Fields:

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  • Spacecraft
    • ETM+

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    Tiling Identification Systems
    System Name Coordinate 1 Min Coordinate 1 Max Coordinate 2 Min Coordinate 2 Max
    WELD CONUS Tile 0.0 32.0 0.0 21.0
Location Keywords

Data Centers

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  • SDSU

    This data center does not have any addresses listed.

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    This data center does not have any addresses listed.

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  • LP DAAC User Services

    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
    • 605-594-6963
    • Email
    Contact Details


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Collection Citations Fields:

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    Collection Citations
    • Collection citation title not provided

      Roy, D.P., Ju, J., Kline, K., Scaramuzza, P.L., Kovalskyy, V., Hansen, M.C., Loveland, T.R., Vermote, E.F., Zhang, C., 2010, Web-enabled Landsat Data (WELD): Landsat ETM+ Composited Mosaics of the Conterminous United States, Remote Sensing of Environment, 114: 35-49.