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

To visualize changes in brightness and extent of global nighttime lights networks over two decades with improved radiometric accuracy and finer spatial resolution.

To provide representations of urban areas in the Continental U.S. in the year 2015 to support sustainable urban development planning in accordance with the growth of urban areas.

To provide roads linking rural production to urban markets in the coastal zone of West Africa that represent an important exposed infrastructure asset.

To provide market accessibility in the coastal zone of West Africa.

To provide a measure of economic activity in the coastal zone of West Africa based on nighttime lights.

To assess relative levels of economic activity in the coastal zone of West Africa.

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