A Simply Updatable Cloud-based Ensemble Digital Terrain Model
Description
A wide range of global public topography datasets circulates to service for various purposes. However, the variety of versions, sources, and formats can confuse users and lead to decrease of usage. Users typically require a single terrain model that can be used to produce morphometric and hydrographic terrain variables across borders. An Ensemble Digital Terrain Model (EDTM) by deriving from global public elevation maps and national DTMs, serves as a simply updatable and inclusive map. To further increase the usability, the concept of Analysis-Ready Cloud Optimized (ACRO) on the basis of cloud optimized GeoTIFF (COG) is adopted. ACRO optimizes accessibility by its pyramid structure of overviews and provides data preprocessing and reformatting in an open source, well-documented and reproducible workflow. EDTM aims to reduce the complexity of global elevation datasets and make the data more usable