To provide urban center level estimates of the proportion of population that has convenient access to public transportation.

To provide urban center level estimates of the average share of the built-up area of cities that is open space for public use for all.

To provide a framework of public-health-focused air quality indicators that quantifies country trends in exposure to major air pollutants.

To provide a polygon representation of urban areas with city or agglomeration name and time series population estimates.

To provide populated place (point) data with consistent population estimates.

To provide high spatial resolution estimates of global urban extent derived from global 30m Landsat satellite data for the target year 2010 and a companion dataset to the Global Man-made Impervious Surface (GMIS) dataset.

To provide high spatial resolution estimates of global man-made imperviousness for the target year 2010, derived from global 30m Landsat satellite data and a companion dataset to the Global Human Built-up And Settlement Extent (HBASE) dataset.

To provide a time series of raster population data for ntegration with other data sets.

To provide a raster representation of urban areas (or urban mask) for use with GRUMP population grids or other data sets.

To provide land area data for use with GRUMPv1 population and urban data as well as a quantitative measure of resolution of the input spatial units for GRUMPv1.

To provide a time series of raster population density data for data integration.

To permit cartographic display of countries and territories that exactly match the GRUMPv1 population surfaces

To provide populated place (point) data with consistent population estimates.

To permit cartographic display of coastlines that exactly match the GRUMPv1 population surfaces.

To permit the summation of population values by country/territory and, in combination with other data layers, the summation of population values by irregular areas represented in the other data layers and country/territory.

To serve a wide user community by providing composite Landsat images and raw data for urban areas that can be used in interdisciplinary studies of remote sensing and the environment.