A brief video introduction to data sets Human Built-up and Settlement Extent (HBASE) and Global Man-made Impervious Surface (GMIS) + how to use the mapping tool to visualizing the data. HBASE and GMIS were produced as a result of a collaboration between the NASA Goddard Space Flight Center and the Department of Geographical Sciences at the University of Maryland, funded through the NASA Land Cover Land Use Change Program.
SEDAC has led a global effort under ICSU CODATA's Global Roads Data Development Task Group. The SEDAC Global Roads Open Access Data Set (gROADS) version 1 is one outcome. In preparation for gROADSv2, SEDAC has led an effort to validate the data contributed by some two million volunteers through OpenStreetMap. This Webinar explores the outcome.