Altimetry: challenges and opportunities in Brazil

ABSTRACT: Altimetry data have direct applications in cartographic mapping projects, flood and geological risk  mapping, as well as in watershed delineation, among others. In this session, the following topics will be addressed:  (1) Presentation of ANADEM, which is a digital terrain model (DTM) with bias removal caused by vegetation in the  Copernicus GLO-30 digital elevation model (DEM), a product developed by the Hydraulic Research Institute (IPH) of  UFRGS in partnership with the National Water and Basic Sanitation Agency (ANA); (2) Challenges in the use of  digital terrain models for the development of the Continuous Cartographic Bases of IBGE; (3) Presentation of the  products developed by ANA derived from ANADEM for the whole of South America to assist in decision-making in  Water Resources, and how these products helped in the delimitation of the flood extent in April/May 2024 in Rio  Grande do Sul; (4) Use of DEMs by the Brazilian Air Force (FAB) to assist in precision navigation.