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
Initial WELD product suite including CONUS and Alaska at weekly, monthly, seasonal 3 month, and annual time steps.
Data Identification Fields:
Geophysical Quantities at the sensor resolution or geolocated
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.
- EARTH SCIENCE
- LAND SURFACE
- LAND USE/LAND COVER
- LAND COVER
Acquisition Information Fields:
Earth Observation SatellitesLANDSAT-7
Temporal Information Fields:
Spatial Information Fields:
|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|
Geographic Information Science Center of Excellence, South Dakota State University
1021 Medary Ave, Wecota Hall 115
Brookings, South Dakota 57007
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
- Home Page
There are no listed data contacts for this collection.
Collection Citations Fields:
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.