The LP DAAC is pleased to announce the availability of monthly and yearly NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) Global Web-Enabled Landsat Data (GWELD) products at 30 meter resolution. They are generated from Landsat 4 and 5 Thematic Mapper (TM) and Landsat 7 Enhanced Thematic Mapper plus (ETM+) images in the United States Geological Survey (USGS) Landsat archive. GWELD Version 3 products utilize Landsat Pre-Collection scenes and Version 3.1 is based on Landsat Collection 1. The GWELD products provide Nadir Bidirectional Reflectance Distribution Function (BRDF)-Adjusted Reflectance (NBAR) for the reflective wavelength bands and Top of Atmosphere (TOA) brightness temperature for the thermal bands. The products use the same Sinusoidal grid tiling system as NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) land product tiles. The overall objective for GWELD was to develop global-scale science-quality Landsat data with a level of processing comparable to the MODIS land products.
A citation containing the Digital Object Identifier (DOI) for each dataset is provided below.
NASA Global Web-Enabled Landsat Data Annual Global 30 m V003 – GWELDYR.003
Roy, D., Zhang, H. (2019). NASA Global Web-Enabled Landsat Data Annual Global 30 m V003 [Data set]. NASA EOSDIS Land Processes DAAC. Accessed YYYY-MM-DD from https://doi.org/10.5067/MEaSUREs/GWELD/GWELDYR.003
NASA Global Web-Enabled Landsat Data Annual Global 30 m V031 – GWELDYR.031
Roy, D., Zhang, H. (2019). NASA Global Web-Enabled Landsat Data Annual Global 30 m V031 [Data set]. NASA EOSDIS Land Processes DAAC. Accessed YYYY-MM-DD from https://doi.org/10.5067/MEaSUREs/GWELD/GWELDYR.031
NASA Global Web-Enabled Landsat Data Monthly Global 30 m V003 – GWELDMO.003
Roy, D., Zhang, H. (2019). NASA Global Web-Enabled Landsat Data Monthly Global 30 m V003 [Data set]. NASA EOSDIS Land Processes DAAC. Accessed YYYY-MM-DD from https://doi.org/10.5067/MEaSUREs/GWELD/GWELDMO.003
NASA Global Web-Enabled Landsat Data Monthly Global 30 m V031 – GWELDMO.031
Roy, D., Zhang, H. (2019). NASA Global Web-Enabled Landsat Data Monthly Global 30 m V031 [Data set]. NASA EOSDIS Land Processes DAAC. Accessed YYYY-MM-DD from https://doi.org/10.5067/MEaSUREs/GWELD/GWELDMO.031
The data are available for download through the LP DAAC Data Pool and NASA’s Earthdata Search.
Receive updates regarding the future release of GWELD data products as additional years are processed by signing up for the LP DAAC listserv. Send a blank email to lpdaac-join@lists.nasa.gov to join.
Please contact LP DAAC User Services with questions.