WELDUSSE: Seasonal Landsat Composites for the Conterminous US

NASA's Web-Enabled Landsat Data provides 30-meter seasonal mosaics of the Conterminous United States from 2002 to 2012. The WELDUSSE product includes Top of Atmosphere reflectance, brightness temperature, and NDVI derived from Landsat ETM+ imagery. This dataset was decommissioned in 2019, with users directed to newer GWELD monthly global composites.

Use Cases

• Monitoring seasonal vegetation dynamics based on NDVI.
• Assessing land cover change using consistent 30-meter reflectance mosaics.
• Studying surface temperature patterns from brightness temperature data.
• Deriving geophysical and biophysical products for regional ecosystem studies.

Strengths

• Provides consistent, continental-scale seasonal composites over a decade (2002-2012).
• Features a high spatial resolution of 30 meters from Landsat ETM+.
• Is a product of a collaboration between NASA, USGS EROS, and South Dakota State University.

Limitations

• Dataset is decommissioned and superseded by newer products (GWELD).
• Specific column names and row counts are not provided in the metadata.
• Known issues exist for Version 1.5, requiring consultation of a user guide.

Provenance

Source

National Aeronautics and Space Administration (NASA), USGS Earth Resources Observation and Science (EROS) Center, South Dakota State University (SDSU) Geospatial Sciences Center of Excellence (GSCE).

Collection Method

Generated from composited Landsat Enhanced Thematic Mapper Plus (ETM+) mosaics.

Time Range

2002 to 2012

Freshness

Last updated metadata indicates 2026-04-10, but the dataset covers 2002-2012 and was decommissioned in 2019.

Geography

Conterminous United States (CONUS)