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 Alaska annual product suite. The WELD Alaska Annual products are defined with each year as the preceding year's December through the current year's November. Data Set Characteristics: Image Dimensions: 5000 x 5000 Total Number Tiles: 162 Alaska Tile Volume: 45 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 SatellitesL7
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 Alaska Tile||0.0||16.0||0.0||13.0|
Gateway of Geospatial Information Technology, San Diego State University
This data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.http://geoinfo.sdsu.edu/
- Home Page
Land Processes Distributed Active Archive Center
U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
Sioux Falls, 57198
M-F, 8 a.m. to 4 p.m. Central Time
- Home Page
There are no listed data contacts for this collection.