The DTM is a bare-earth elevation model of natural terrain features where elevations of vegetation and cultural features, such as buildings and other manmade structures, are digitally removed. The DTM is hydro-enforced to ensure structures over water bodies (such as bridges and culverts) are removed, lake water surfaces are flattened, and watercourses flow downstream. In critical areas where ALOS coverage was found to be insufficient to produce a good quality 2.5 m DTM product, or there were voids in the data, these areas we in-filled using a product called AW3D Enhanced DTM. AW3D Enhanced DTM is derived from a deep stack of Maxar 0.5 m high-resolution satellite imagery using a process that is similar to how AW3D Standard is produced.
If you are looking for quality data products to perform climate change modeling or for some other project, look no further than L3Harris Geospatial. Contact our experts and they can work with you to help determine the best data to meet your project objectives.