The ORNL DAAC Spatial Data Access Tool (SDAT) provides access to various geospatial data, including ORNL DAAC archived data through Open Geospatial Consortium (OGC) standards-based Web Services ( Web Map Service v1.1.1 and Web Coverage Service v1.0.0 ). OGC services allow users to select the spatial extent, format, projection and resolution of the data to be previewed and/or downloaded.