High Resolution Digital Elevation Model Mosaic (HRDEM Mosaic) - CanElevation Series

The High Resolution Digital Elevation Model Mosaic provides a unique and continuous representation of the high resolution elevation data available across the country. The High Resolution Digital Elevation Model (HRDEM) product used is derived from airborne LiDAR data (mainly in the south) and satellite images in the north. The mosaic is available for both the Digital Terrain Model (DTM) and the Digital Surface Model (DSM) from web mapping services. It is part of the CanElevation Series created to support the National Elevation Data Strategy implemented by NRCan. This strategy aims to increase Canada's coverage of high-resolution elevation data and increase the accessibility of the products.

Unlike the HRDEM product in the same series, which is distributed by acquisition project without integration between projects, the mosaic is created to provide a single, continuous representation of strategy data. The most recent datasets for a given territory are used to generate the mosaic. This mosaic is disseminated through the Data Cube Platform, implemented by NRCan using geospatial big data management technologies. These technologies enable the rapid and efficient visualization of high-resolution geospatial data and allow for the rapid generation of dynamically derived products. The mosaic is available from Web Map Services (WMS), Web Coverage Services (WCS) and SpatioTemporal Asset Catalog (STAC) collections. Accessible data includes the Digital Terrain Model (DTM), the Digital Surface Model (DSM) and derived products such as shaded relief and slope.

The mosaic is referenced to the Canadian Height Reference System 2013 (CGVD2013) which is the reference standard for orthometric heights across Canada.

Source data for HRDEM datasets used to create the mosaic is acquired through multiple projects with different partners.

Collaboration is a key factor to the success of the National Elevation Strategy. Refer to the “Supporting Document” section to access the list of the different partners including links to their respective data.

Simple

Date ( RI_367 )
2024-04-19
Date ( RI_366 )
2020-11-27
RI_414
  Government of Canada; Natural Resources Canada; Strategic Policy and Innovation Sector - ( )
Status
onGoing; enContinue RI_596
Maintenance and update frequency
unknown; inconnu RI_543
Keywords ( RI_528 )
  • Digital Elevation Model
  • Digital Surface Model
  • Digital Terrain Model
  • LiDAR
  • Shaded Relief
  • Color Shaded Relief
  • Slope Map
  • Aspect Map
  • Mosaic
  • ArcticSDI_DEM
Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
  • Digital elevation data
Use limitation
Open Government Licence - Canada (http://open.canada.ca/en/open-government-licence-canada)
Access constraints
license; licence RI_606
Use constraints
license; licence RI_606
Spatial representation type
grid; grille RI_636
Metadata language
eng
Metadata language
fre
Topic category
  • Elevation
Begin date
2006-04-29
N
S
E
W
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Reference system identifier
https://www.epsg-registry.org / EPSG:6140 /
Reference system identifier
https://www.epsg-registry.org / EPSG:4326 /
Reference system identifier
https://www.epsg-registry.org / EPSG:6647 /
Distribution format
  • FGDB/GDB ( 10.5.1 )

    File decompression technique
    ZIP Compression Software

  • WMS ( 1.3.0 )

    Specification
    Geospatial Consortium Inc., OpenGIS Web Map Service (WMS) Implementation Specification, Version 1.3.0, 2006-03-15, Reference number of this OGC® project document: 06-042, https://portal.ogc.org/files/06-042

  • WCS ( 1.1.1 )

    Specification
    Geospatial Consortium Inc., OpenGIS Web Coverage Service (WCS) Implementation Specification, Version 1.1.1, 2007-07-08, Reference number of this OGC® project document: 07-067r2, https://portal.ogc.org/files/07-067r2

  • HTML ( 1.0 )

RI_412
  Government of Canada; Natural Resources Canada; Strategic Policy and Innovation Sector - ( )
OnLine resource
HRDEM Mosaic Web Map Service (WMS) ( HTTPS )

Web Service;WMS;zxx

OnLine resource
HRDEM Mosaic Web Coverage Service (WCS) ( HTTPS )

Web Service;WCS;zxx

OnLine resource
HRDEM Mosaic DSM Metadata ( FTP )

Dataset;FGDB/GDB;eng,fra

OnLine resource
HRDEM Mosaic DTM Metadata ( FTP )

Dataset;FGDB/GDB;eng,fra

OnLine resource
HRDEM Mosaic Product Viewer (English) ( HTTP )

Application;HTML;eng

OnLine resource
HRDEM Mosaic Product Viewer (French) ( HTTP )

Application;HTML;fra

OnLine resource
Product services access guide (English) ( HTTPS )

Supporting Document;PDF;eng

OnLine resource
Product services access guide (French) ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Dynamic extraction tool (English) ( HTTPS )

Application;HTML;eng

OnLine resource
Dynamic extraction tool (French) ( HTTPS )

Application;HTML;fra

OnLine resource
SpatioTemporal Asset Catalog (STAC) Application Programming Interface (API) ( HTTPS )

API;JSON;eng,fra

OnLine resource
High Resolution Digital Elevation Model Mosaic (HRDEM Mosaic) - CanElevation Series - Product Specifications (English) ( HTTPS )

Supporting Document;PDF;eng

OnLine resource
High Resolution Digital Elevation Model Mosaic (HRDEM Mosaic) - CanElevation Series - Product Specifications (French) ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
HRDEM Mosaic Hillshade DSM (English) ( OGC:WMS )

Web Service;WMS;eng

OnLine resource
HRDEM Mosaic Hillshade DSM (French) ( OGC:WMS )

Web Service;WMS;fra

Hierarchy level
dataset; jeuDonnées RI_622
Description
The mosaic is generated for the DSM and the DTM both derived from LiDAR data. Each pixel in the mosaic corresponds to the value of the DSM produced from the most recent LiDAR data at that point. The grid is redefined at a resolution of 1 m using the gdal_warp function and the bilinear resampling type. The combination of the DSM is performed with the function gdal_merge. The integration of the mosaic into the Data Cube Platform is done using an ingest program in scala language whose resampling type is bilinear.
RI_416
  Government of Canada; Natural Resources Canada; Strategic Policy and Innovation Sector - ( )
File identifier
0fe65119-e96e-4a57-8bfe-9d9245fba06b XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2024-08-27T11:41:34
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
CAN/CGSB-171.100-2009
RI_414
  Government of Canada; Natural Resources Canada; Strategic Policy and Innovation Sector - ( )
 
 

Overviews

overview
MNS Hillshade

Spatial extent

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Keywords


Provided by

Associated resources

Not available