The first release of Shuttle Radar Topography Mission (SRTM) data was provided in 1-degree digital elevation model (DEM) tiles from the USGS 2003. The data was released continent by continent, as and
Raster altimetry component of SM 5 is based on vector file of contour lines from ZABAGED®. However, this product has not been updated contrary to ZABAGED® since 2007.
Using the 2013 OSMP lidar DEM and the newly created site DEMs, DEMs of difference (DODs) were calculated for each Site to show how the landscape has changed over a period of time (James et al. 2012).
