Canadian Elevation Models: Difference between revisions

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[[Image:canada_elevation_model_20m.png|right|thumb|450px|Canadian DEM (CDEM).]]
[[Image:canada_elevation_model_20m.png|right|thumb|450px|Canadian DEM (CDEM).]]
== Introduction ==
== Introduction ==
The Canadian elevation model in its 0.75-arc-second resolution is a digital elevation model (DEM’s) produced by Natural Resources Canada (NRCan). CDEM is mainly based on elevation contours and hydrographic data at from NRCan's Geospatial Data Base at the scale of 1:50,000, or at other scales provided by other provinces and territories.  
The Canadian elevation model in its 0.75-arc-second resolution is a digital elevation model (DEM’s) produced by Natural Resources Canada (NRCan). CDEM is mainly based on elevation contours and hydrographic data from NRCan's Geospatial Data Base at the scale of 1:50,000, or at other scales provided by other provinces and territories.  


Please consult the user guide (see link below) for more details.  
Please consult the user guide (see link below) for more details.  

Revision as of 14:16, 7 August 2024

Canadian DEM (CDEM).

Introduction

The Canadian elevation model in its 0.75-arc-second resolution is a digital elevation model (DEM’s) produced by Natural Resources Canada (NRCan). CDEM is mainly based on elevation contours and hydrographic data from NRCan's Geospatial Data Base at the scale of 1:50,000, or at other scales provided by other provinces and territories.

Please consult the user guide (see link below) for more details.

Dataset Overview

  • Spatial Coverage: Canada
  • Resolution:
    • 0.75 arc-second (approximately 20m) in windPRO (resampled with a bi-linear algorithm, if needed)
    • Source data: In-general: 0.75 arc-second resolution below N69, 3-arc-seconds north of N81. Other areas 1.4 arc-second.
  • Data-type: Digital Elevation Model (DEM)
  • Coordinate system:
    • Horizontal: Geographic WGS - NAD83 (EPSG:4617)
    • Vertical: Canadian Height Reference System, 1928 (CGVD28)
  • Version: WindPRO holds the version 1.0 (downloaded august 2024)
  • Vertical Accuracy: N/A

Availability from within WindPRO

The data are available directly from within windPRO in 1-arc-second (~30-meter) resolution. The data can be accessed from the online-services in the following objects:

  • Line Object (with purpose to height contour lines)
  • Elevation Grid Object

License and Attribution

The product belongs to the open data of Natural Resources Canada (NRCan). The data have been licensed under a ‘Creative Commons Attribution 3.0 Australia Licence’ in its version 2 from 2012 - see here.
Please accept the license conditions and use a proper attribution when using this dataset, such as:

Contains: Elevation data from Geoscience Australia, Department of Resources, Energy and Tourism, Canberra, Australia.
© Commonwealth of Australia (Geoscience Australia).
Distribution through EMD and windPRO. 

Acknowledgement

  • Geoscience Australia and the pubic of Australia are thanked for producing this digital elevation dataset – and disseminating it in the public domain - and thus for aiding the development of renewable energy.
  • Integration of this dataset into EMD services was co-supported through the InnoWind project (www.innowind.dk) which is co-funded by the Danish Innovation Fund

External Links

  • CDEM - information sheet - pdf-file [ HERE]
  • CDEM - product specification - pdf-file - [ HERE]