Authors
MacFerrin, Michael J (CIRES,NOAA/NCEI), Amante, Christopher (CIRES,NOAA/NCEI), Carignan, Kelly (CIRES,NOAA/NCEI), Love, Matthew (CIRES,NOAA/NCEI), Lim, Elliot (CIRES,NOAA/NCEI)
Abstract
The Coastal DEM Team at CIRES/NOAA has developed a fully-functional and automated ICESat-2 Validation of Elevations Reporting Tool (IVERT) to generate land-based validation statistics of Digital Elevation Models (DEMs) anywhere in the world using photon data from NASAâs Ice, Cloud, and land Elevation Satellite 2 (ICESat-2). IVERT can rapidly query the outline of a DEM anywhere on Earth, automatically transform vertical and horizontal datums to match ICESat-2, mask out water bodies and urban structures as needed at the native resolution of the DEM, identify and flag erroneous data and artifacts, and generate rigorous statistical analyses of the underlying DEM. Such statistics are used to evaluate DEM accuracy for coastal hazard modeling and other scientific uses. IVERT has been used to successfully validate both low-resolution global DEMs (such as our ETOPO 2022 release) and high-resolution coastal DEMs, where it is reported in publicly-archived metadata reports accompanying the public releases of new datasets. IVERT is presently being migrated to a cloud-computing platform for scalable execution and accessibility.