Medium Resolution Digital Elevation Model (MRDEM) - CanElevation Series

Medium Resolution Digital Elevation Model (MRDEM) - CanElevation Series In replacement of the former Canadian Digital Elevation Model (CDEM) that is no longer supported, the Medium Resolution Digital Elevation Model (MRDEM) product is a multi-source product that integrates elevation data from the Copernicus DEM** acquired during the TanDEM-X Mission (AIRBUS, 2022), and the High Resolution Digital Elevation Model data derived from airborne lidar. This product provides a complete, 30 meters resolution, nationwide coverage for Canada. It includes a Digital Terrain Model (DTM), a Digital Surface Model (DSM) and other derived products. The spatial coverage extends into the USA, where needed, to provide coverage for cross-border watersheds in support of hydrological studies and applications. The MRDEM DSM dataset is based on the GLO-30 version of the Copernicus DEM** (hereafter named GLO-30). The process to generate the MRDEM DTM dataset is more complex and involves different sources. Where available, the HRDEM Mosaic derived from lidar was used since it already provides reliable terrain elevation values. The HRDEM Mosaic data used was resampled from 1 meter to 30 meters. Elsewhere, the processing workflow combines a forest removal model and a settlement removal model that is applied to the GLO-30 values in order to estimate the terrain elevation values. Both datasets are projected to Canada Atlas Lambert NAD83 (CSRS) (EPSG:3979). The MRDEM is referenced to the CGVD2013 which is the reference standard for orthometric heights across Canada. The product Medium Resolution Digital Elevation Model (MRDEM) is part of the CanElevation Series created in support to the National Elevation Data Strategy implemented by NRCan. ** This product was in part produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014- 2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. The organisations in charge of the Copernicus program by law or by delegation do not incur any liability for any use of the Copernicus WorldDEM-30. 2024-06-21 Natural Resources Canada geoinfo@nrcan-rncan.gc.ca Form DescriptorsDigital Elevation ModelDigital Surface ModelDigital Terrain ModellidarShaded ReliefAspect MapColor Shaded ReliefSlope MapMedium resolution Digital Elevation ModelCopernicusDigital elevation data DSM Cloud Optimized GeoTIFF (COG)GeoTIF https://datacube-prod-data-public.s3.ca-central-1.amazonaws.com/store/elevation/mrdem/mrdem-30/mrdem-30-dsm.tif DTM hillshade Cloud Optimized GeoTIFF (COG)GeoTIF https://datacube-prod-data-public.s3.ca-central-1.amazonaws.com/store/elevation/mrdem/mrdem-30/mrdem-30-dtm-hillshade.tif DSM hillshade Cloud Optimized GeoTIFF (COG)GeoTIF https://datacube-prod-data-public.s3.ca-central-1.amazonaws.com/store/elevation/mrdem/mrdem-30/mrdem-30-dsm-hillshade.tif Hillshade map of the Digital Terrain ModelWMS https://datacube.services.geo.ca/wrapper/ramp/ogc/mrdem?request=GetCapabilities&service=WMS&version=1.3.0&layers=dtm-hillshade&legend_format=image%2Fpng&feature_info_type=text%2Fxml Hillshade map of the Digital Terrain ModelWMS https://datacube.services.geo.ca/wrapper/ramp/ogc/mrdem?request=GetCapabilities&service=WMS&version=1.3.0&layers=dtm-hillshade&legend_format=image%2Fpng&feature_info_type=text%2Fxml MRDEM Web Map Service (WMS)WMS https://datacube.services.geo.ca/ows/mrdem?request=getcapabilities&service=wms SpatioTemporal Asset Catalog (STAC) Application Programming Interface (API)JSON https://datacube.services.geo.ca/stac/api/search?collections=mrdem-30 DTM Cloud Optimized GeoTIFF (COG)GeoTIF https://datacube-prod-data-public.s3.ca-central-1.amazonaws.com/store/elevation/mrdem/mrdem-30/mrdem-30-dtm.tif Medium Resolution Digital Elevation Model (MRDEM) - CanElevation Series - Product Specifications (English)PDF https://ftp.maps.canada.ca/pub/elevation/dem_mne/MRDEM_MNEMR/CanElevation-MRDEM-Product-Specifications.pdf Medium Resolution Digital Elevation Model (MRDEM) - CanElevation Series - Product Specifications (French)PDF https://ftp.maps.canada.ca/pub/elevation/dem_mne/MRDEM_MNEMR/CanElevation-MNEMR-Specification-Produit.pdf DTM source Cloud Optimized GeoTIFF (COG)GeoTIF https://datacube-prod-data-public.s3.amazonaws.com/store/elevation/mrdem/mrdem-30/mrdem-30-dtm-source.tif

In replacement of the former Canadian Digital Elevation Model (CDEM) that is no longer supported, the Medium Resolution Digital Elevation Model (MRDEM) product is a multi-source product that integrates elevation data from the Copernicus DEM** acquired during the TanDEM-X Mission (AIRBUS, 2022), and the High Resolution Digital Elevation Model data derived from airborne lidar. This product provides a complete, 30 meters resolution, nationwide coverage for Canada. It includes a Digital Terrain Model (DTM), a Digital Surface Model (DSM) and other derived products. The spatial coverage extends into the USA, where needed, to provide coverage for cross-border watersheds in support of hydrological studies and applications.

The MRDEM DSM dataset is based on the GLO-30 version of the Copernicus DEM** (hereafter named GLO-30). The process to generate the MRDEM DTM dataset is more complex and involves different sources. Where available, the HRDEM Mosaic derived from lidar was used since it already provides reliable terrain elevation values. The HRDEM Mosaic data used was resampled from 1 meter to 30 meters. Elsewhere, the processing workflow combines a forest removal model and a settlement removal model that is applied to the GLO-30 values in order to estimate the terrain elevation values. Both datasets are projected to Canada Atlas Lambert NAD83 (CSRS) (EPSG:3979).

The MRDEM is referenced to the CGVD2013 which is the reference standard for orthometric heights across Canada.

The product Medium Resolution Digital Elevation Model (MRDEM) is part of the CanElevation Series created in support to the National Elevation Data Strategy implemented by NRCan.

** This product was in part produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014- 2018 provided under COPERNICUS by the European Union and ESA; all rights reserved.

The organisations in charge of the Copernicus program by law or by delegation do not incur any liability for any use of the Copernicus WorldDEM-30.

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Contact Information

Electronic Mail Address: geoinfo@nrcan-rncan.gc.ca

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