ETOP01 Land Elevation, Northwest Atlantic Region

ETOPO1 data was downloaded from the ETOPO1 is a 1 arc-minute global relief model provides a complete topographic and bathymetric coverage between -90° and +90°. Integrating land topography and ocean bathymetry. Built from global and regional data sets. It s available in "Ice Surface" (top of Antarctica and Greenland ice sheets) and "Bedrock" (base of the icesheets). Data can be downloaded directly from the source at the NOAA website. The data is available in either grid-registered or cell-registered files in netCDF and geotiff formats. A grid extraction tool is available to download a user selected area. Several versions of the data have been styled for public viewing by CPAWS-NL as part of a project to compile useful data within the Newfoundland and Labrador region into a data hub. The ETOPO1 Bedrock data was downloaded in grid registered geotiff format from the NOAA website. Newfoundland and Labrador are located between 46°N latitude and 60°N degrees latitude, the resolution of the data is latitude dependent and an ArcSecond converter may be a useful pre-analysis tool, https://www.opendem.info/arc2meters.html. More details can be found in the ETOPO1 Global Relief Model Report, ETOPO1: Procedures, Data Sources and Analysis Hillshade was also processed and can be found here. Hillshade was processed in ArcGIS Pro 2.8.1 using Raster function "Hillshade", default options were applied with the only modification being a z value of 0.00001792(m), the appropriate z value for 60° Longitude. Hillshade symbology was then set to stretch using standard deviations with a value of 1, with gamma set to 1 (although 4 is the recommended value). Other viewing options include: A web map of Digital Elevations Models for Newfoundland and Labrador (Watershed Regions) A web map of the ETOPO1 Global Relief Model for the Northwest Atlantic Region A web hosted layer for the ETOPO1 Land Elevation, Northwest Atlantic Region A web hosted layer of the Land Elevation in the Newfoundland and Labrador Watersheds. Please note that this data has been subject to some processing and it is advisable to access and use source data. Please note that additional data options are available from the source and it was not feasible to prepare and present all possible data options. Please refer to the CPAWS Data Record for Elevation and Bathymetry across Newfoundland and Labrador for options. Please note that the ETOPO1 Global Relief Model is a surface that has been interpreted from best available data sources at the time of creation (2008).