ANADEM - South America Digital Terrain Model

ANADEM is a digital terrain model (DTM) for South America. The model removes the vegetation bias from the Copernicus GLO-30 DEM by appling a new methodology based on remote sensing data and machine learning.

The data is freely available at 30 meters in Google Earth Engine platform or in TIF files located in the Download section in this page.

Earth Engine Snippet

var anadem = ee.ImageCollection("projects/et-brasil/assets/anadem/v1");

ANADEM visualization in Google Earth Engine JavaScript

          /*
          Developed by the Federal University of Rio Grande do Sul and Brazilian Water Agency (ANA)
          contact: leonardo.laipelt@ufrgs.br
          */
          
          // Asset
          var anadem = ee.Image('projects/et-brasil/assets/anadem/v1');

         // Remover noData
          var anadem = anadem.updateMask(anadem.neq(-9999));
          
          // Visualization parameters
          var visparams = { min: 0,
            max: 1300.0,
            palette:['006600', '002200', 'fff700', 'ab7634', 'c4d0ff', 'ffffff']
          };
          // add layer 
          Map.addLayer(anadem,visparams,'anadem');
          

Source code

Anadem v 1.0

How to cite

Download ANADEM

anadem_v1_mgrs_17l.tif

anadem_v1mgrs_17m.tif

anadem_v1_mgrs_17n.tif

anadem_v1_mgrs_18f.tif

anadem_v1_mgrs_18g.tif

anadem_v1_mgrs_18h.tif

anadem_v1_mgrs_18k.tif

anadem_v1_mgrs_18l.tif

anadem_v1_mgrs_18m.tif

anadem_v1_mgrs_18n.tif

anadem_v1_mgrs_18p.tif

anadem_v1_mgrs_19f.tif

anadem_v1_mgrs_19g.tif

anadem_v1_mgrs_19h.tif

anadem_v1_mgrs_19j.tif

anadem_v1_mgrs_19k.tif

anadem_v1_mgrs_19l.tif

anadem_v1_mgrs_19m.tif

anadem_v1_mgrs_19n.tif

anadem_v1_mgrs_19p.tif

anadem_v1_mgrs_20f.tif

anadem_v1_mgrs_20g.tif

anadem_v1_mgrs_20h.tif

anadem_v1_mgrs_20j.tif

anadem_v1_mgrs_20k.tif

anadem_v1_mgrs_20l.tif

anadem_v1_mgrs_20m.tif

anadem_v1_mgrs_20n.tif

anadem_v1_mgrs_20p.tif

anadem_v1_mgrs_21f.tif

anadem_v1_mgrs_21h.tif

anadem_v1_mgrs_21j.tif

anadem_v1_mgrs_21k.tif

anadem_v1_mgrs_21l.tif

anadem_v1_mgrs_21m.tif

anadem_v1_mgrs_21n.tif

anadem_v1_mgrs_21p.tif

anadem_v1_mgrs_22h.tif

anadem_v1_mgrs_22j.tif

anadem_v1_mgrs_22k.tif

anadem_v1_mgrs_22l.tif

anadem_v1_mgrs_22m.tif

anadem_v1_mgrs_22n.tif

anadem_v1_mgrs_23j.tif

anadem_v1_mgrs_23k.tif

anadem_v1_mgrs_23l.tif

anadem_v1_mgrs_23m.tif

anadem_v1_mgrs_24k.tif

anadem_v1_mgrs_24l.tif

anadem_v1_mgrs_24m.tif

anadem_v1_mgrs_25l.tif

anadem_v1_mgrs_25m.tif

Last updates

• 20/02/2024 - Updated for version 1.0. Declared -9999 as nodata in the model. Truncated elevation values to 2 decimal place.
• 20/11/2023 - Updated for version 0.18. Filtering areas around river sections to remove values ​​lower than the elevation of the drainage network.