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Alberni-Clayoquot Regional District |
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Bathymetry data for offshore BC at a resolution of 500 metres |
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Canadian Digital Surface Model |
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Canadian Hydrographic Service |
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Digital Elevation Model Global Mosaic ArcGIS Image Service |
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Digital Elevation Model of Port Alberni, Canada: Procedures, Data Sources, and Analysis |
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GeoBC |
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GCMD Data Center Keywords |
Global Change Master Directory (GCMD) Data Center Keywords |
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GCMD Project Keywords |
Global Change Master Directory (GCMD) Project Keywords |
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NASA/Global Change Master Directory (GCMD) Earth Science Services Keywords |
Global Change Master Directory (GCMD) Service Keywords |
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NASA/GCMD Data Resolution Keywords |
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NASA/GCMD Earth Science Keywords |
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NASA/GCMD Location Keywords |
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NASA/GCMD Platform Keywords |
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NCEI Digital Elevation Model Extents ArcGIS Feature Layer |
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North American Vertical Datum of 1988 |
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Port Alberni, Canada 1/3 arc-second NAVD 88 Coastal Digital Elevation Model |
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Tsunami Inundation DEM Project |
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Uncontrolled |
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VDatum software v. 3.4 |
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World Geodetic System 1984 |
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http://geobc.gov.bc.ca/ |
NOAA OCM Digital Coast |
GeoBC, creates and manages geospatial information and products, as well as provides
consultation services across all natural resource sector (NRS) agencies. |
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http://geogratis.gc.ca/site/eng/extraction |
Canadian Digital Surface Model |
The CDSM is part of Natural Resources Canada's altimetry system designed to better
meet the users' needs for elevation data and products. |
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http://soggy.zoology.ubc.ca:8080/geonetwork/srv/eng/search#|c237a9d8-7bca-4065-ba04-5464721ca7b8 |
Geonetwork Opensource |
Marine Data for BC Geonetwork |
download |
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http://www.charts.gc.ca/index-eng.asp |
Canadian Hydrographic Service Electronic Navigational Chart |
Digital database of CHS hydrographic surveys. |
download |
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http://www.epsg-registry.org/ |
European Petroleum Survey Group Geodetic Parameter Registry |
Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured
dataset of Coordinate Reference Systems and Coordinate Transformations. |
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http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:datum:EPSG::5703 |
North American Vertical Datum of 1988 |
GML for North American Vertical Datum of 1988 available at the epsg-registry. |
information |
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http://www.vdatum.noaa.gov |
VDatum |
Vertical Datum Transformation tool |
download |
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https://epsg.org/crs_4326/WGS-84.html |
WGS 84 |
GML of World Geodetic System 1984 coordinate reference system. |
information |
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https://epsg.org/home.html |
European Petroleum Survey Group Geodetic Parameter Registry |
Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured
dataset of Coordinate Reference Systems and Coordinate Transformations. |
search |
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https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic/ImageServer |
DEM Global Mosaic (Elevation Values) ArcGIS Image Service |
REST endpoint for DEM Global Mosaic (Elevation Values) ArcGIS Image Service |
search |
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https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer |
DEM Global Mosaic (Color Shaded Relief) ArcGIS Image Service |
This service provides a color shaded relief visualization of the data. The elevations/depths
are displayed using this color ramp: https://gis.ngdc.noaa.gov/viewers/images/dem_color_scale.png. |
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https://gis.ngdc.noaa.gov/arcgis/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer/WMSServer?request=GetCapabilities&service=WMS |
DEM Global Mosaic (Color Shaded Relief) WMS |
Capabilities document for Open Geospatial Consortium Web Map Service for DEM Global
Mosaic (Color Shaded Relief) |
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https://noaa.maps.arcgis.com/home/item.html?id=0afa88a1701749dbbf76fcadca4f77f3 |
NOAA GeoPlatform Entry for NCEI Digital Elevation Model (DEM) Extents |
NOAA GeoPlatform listing for NCEI Digital Elevation Model (DEM) Extents |
information |
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https://noaa.maps.arcgis.com/home/item.html?id=c876e3c96a8642ab8557646a3b4fa0ff |
NOAA GeoPlatform Entry for DEM Global Mosaic (Elevation Values) |
NOAA GeoPlatform listing for DEM Global Mosaic (Elevation Values) |
information |
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https://noaa.maps.arcgis.com/home/item.html?id=e11ebaeb19544bb18c2afe440f063062 |
NOAA GeoPlatform Entry for DEM Global Mosaic (Color Shaded Relief) |
Shaded relief visualization of a global seamless bathymetry/topography mosaic of digital
elevation models at NOAA/NCEI. |
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https://noaa.maps.arcgis.com/home/item.html?id=e9ba2e7afb7d46cd878b34aa3bfce042 |
Digital Elevation Models Mosaic (Individual DEMs) |
An image service providing access to bathymetric/topographic digital elevation models
stewarded at NOAA's National Centers for Environmental Information. Either individual
DEMs or small subsets can be accessed through this service. |
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https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/ncei_dem_extents/FeatureServer |
NCEI Digital Elevation Model (DEM) Extents ArcGIS Feature Service |
REST endpoint for NCEI Digital Elevation Model (DEM) Extents ArcGIS Feature Service |
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https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords |
Global Change Master Directory (GCMD) Keywords |
The information provided on this page seeks to define how the GCMD Keywords are structured,
used and accessed. It also provides information on how users can participate in the
further development of the keywords. |
information |
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DEM Map Search |
https://www.ncei.noaa.gov/maps/bathymetry/ |
Bathymetric Data Viewer |
The Bathymetric Data Viewer is an interactive map providing discovery, descriptions,
and download capability for bathymetric survey data and digital elevation models archived
at NOAA's National Centers for Environmental Information (NCEI). |
search |
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https://www.ncei.noaa.gov/products/coastal-elevation-models |
Coastal Elevation Models at NCEI |
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information |
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DEM Text Search |
https://www.ngdc.noaa.gov/mgg/coastal |
DEM text search |
Text search for locating completed and planned DEMs. |
search |
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https://www.ngdc.noaa.gov/mgg/dat/dems/regional_tr/port_alberni_13_navd88_2016.pdf |
Digital Elevation Model of Port Alberni, Canada: Procedures, Data Sources, and Analysis |
Report describing the development of the Port Alberni, Canada DEM |
download |
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https://www.ngdc.noaa.gov/thredds/dodsC/regional/port_alberni_13_navd88_2016.nc.html |
OPeNDAP Dataset Access Form |
OPeNDAP Dataset Access Form |
download |
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https://www.ngdc.noaa.gov/thredds/fileServer/regional/port_alberni_13_navd88_2016.nc |
Download NetCDF File |
Download NetCDF File |
download |
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https://www.ngdc.noaa.gov/thredds/ncml/regional/port_alberni_13_navd88_2016.nc?catalog=https%3A%2F%2Fwww.ngdc.noaa.gov%2Fthredds%2Fcatalog%2Fregional%2Fcatalog.html&dataset=regionalDatasetScan%2Fport_alberni_13_navd88_2016.nc |
NetCDF Markup Language file |
NetCDF Markup Language file |
information |
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https://www.ngdc.noaa.gov/thredds/ncss/regional/port_alberni_13_navd88_2016.nc/dataset.html |
Download a subset of the NetCDF |
Download a subset of the NetCDF |
download |
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https://www.ngdc.noaa.gov/thredds/wcs/regional/port_alberni_13_navd88_2016.nc?service=WCS&version=1.0.0&request=GetCapabilities |
Web Coverage Service GetCapabilities |
Web Coverage Service GetCapabilities |
information |
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https://www.ngdc.noaa.gov/thredds/wms/regional/port_alberni_13_navd88_2016.nc?service=WMS&version=1.3.0&request=GetCapabilities |
Web Map Service GetCapabilities |
Web Map Service GetCapabilities |
information |
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2015-04-22T00:00:00 |
NOAA created the National Centers for Environmental Information (NCEI) by merging
NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC),
and National Oceanographic Data Center (NODC), including the National Coastal Data
Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations
Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
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2015-10-28T00:00:00 |
All datasets obtained by NCEI were transformed to common horizontal and vertical datums
of WGS 84 geographic and NAVD88, respectively, using constant offsets and transformation
parameters in NOAAs VDatum software. They were also converted to common file format
for visualization and inspection.
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2015-10-28T00:00:00 |
Datasets were visually inspected with ArcGIS for identification and editing of data
anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
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2015-10-28T00:00:00 |
Older and low-resolution data were clipped to newer and high-resolution data where
inconsistencies occured in overlap areas of the datasets.
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2015-10-28T00:00:00 |
Topographic data was filtered to remove water surface points where they existed
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2015-10-30T00:00:00 |
xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a
1/3 arc-second grid that interpolated to fill empty cells. Points extracted every
5 meters along the coastline were also included to ensure that the bathymetric grid
reached zero at the coast. The resulting Arc ASCII grid was clipped to the coastline
to remove values over land using GDAL.
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2015-11-12T00:00:00 |
xyz files for each input dataset were gridded using MB-System's 'mbgrid' tool, which
utilizes a high-tension spline interpolation method to fill grid cells with no input
elevation values. Preferential weighting was given to more recent, higher-accuracy
datasets.
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2015-11-14T00:00:00 |
The DEM was quantitatively evaluated by comparing with source datasets.
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