Canadian Elevation Models: Difference between revisions
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* '''Spatial Coverage:''' Canada | * '''Spatial Coverage:''' Canada | ||
* '''Resolution:''' | * '''Resolution:''' | ||
** 0.75 arc-second (approximately 20m) in windPRO (resampled with a bi-linear algorithm, if needed) | ** 0.75 arc-second (approximately 20m) in windPRO<br>(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. | ** 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:''' [[:Category%3ADigital_Elevation_Models#What_type_of_elevation_model.3F_DEM.2C_DSM_and_DTM.3F|Digital Elevation Model (DEM)]] | * '''Data-type:''' [[:Category%3ADigital_Elevation_Models#What_type_of_elevation_model.3F_DEM.2C_DSM_and_DTM.3F|Digital Elevation Model (DEM)]] |
Revision as of 15:16, 7 August 2024
![](/mediawiki/images/thumb/a/ae/Canada_elevation_model_20m.png/450px-Canada_elevation_model_20m.png)
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.
- 0.75 arc-second (approximately 20m) in windPRO
- 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]