OLD VERSION: Digital Elevation Models Global Mosaic (Color Shaded Relief)

This is the older version of this item - please use this version instead.This is an image service providing a shaded relief visualization of bathymetric/topographic digital elevation models stewarded at NOAA's National Centers for Environmental Information (NCEI). This service provides a color shaded relief visualization of the data; for elevation/depth values in meters, please see the related DEM Global Mosaic (Elevation Values) or DEM Mosaic (Individual DEMs) services.The DEM Global Mosaic is an image service providing access to bathymetric/topographic digital elevation models stewarded at NOAA's National Centers for Environmental Information (NCEI), along with global and regional grids such as GEBCO_2019, IBCAO, IBCSO, and the Hawaiian Island Multibeam Synthesis (University of Hawaii). This service provides a color shaded relief visualization, for elevation/depth values in meters, please see the related DEM Global Mosaic (Elevation Values) service.There are 5 related image services providing access to Digital Elevation Models:DEM Mosaic (Individual DEMs)DEM Global Mosaic (Elevation Values)DEM Global Mosaic (Color Shaded Relief)DEM Tiles Mosaic (Newer Tiled DEMs; Elevation Values)DEM Tiles Mosaic (Newer Tiled DEMs; Color Shaded Relief)NCEI builds and distributes high-resolution, coastal digital elevation models (DEMs) that integrate ocean bathymetry and land topography to support NOAA's mission to understand and predict changes in Earth's environment, and conserve and manage coastal and marine resources to meet our Nation's economic, social, and environmental needs. They can be used for modeling of coastal processes (tsunami inundation, storm surge, sea-level rise, contaminant dispersal, etc.), ecosystems management and habitat research, coastal and marine spatial planning, and hazard mitigation and community preparedness. For more information about coastal DEMs at NCEI, please see: http://ngdc.noaa.gov/mgg/coastal/coastal.html or learn more from our DEM Fact Sheet (1 MB PDF).This service is a general-purpose global, seamless bathymetry/topography mosaic. It combines DEMs from a variety of near sea-level vertical datums, such as mean high water (MHW), mean sea level (MSL), and North American Vertical Datum of 1988 (NAVD88). No conversion/harmonization of vertical datums was performed. Because the mosaic contains "overviews" for performance, individual DEMs cannot be separated from the others. Individual DEMs, or smaller subsets, are available in the companion DEM Mosaic (Individual DEMs) image service.By default, the DEMs are drawn in order of cell size, with higher-resolution grids displayed on top of lower-resolution grids. If overlapping DEMs have the same resolution, the newer one is shown.The DEMs can be viewed in NCEI's Bathymetric Data Viewer along with other bathymetric datasets stewarded at NCEI.Please see NCEI's corresponding DEM Footprints map service for polygon footprints and more information about the individual DEMs used to create this composite view. The newer 1/3 and 1/9 arcsecond "tiled" DEMs are hosted by NOAA's Office for Coastal Management; please see the Data Access Viewer for access to these data. View these services together in a single combined map.In this visualization, the elevations/depths are displayed using this color ramp:THREDDS catalog (for extracting/downloading DEMs)

Data and Resources

Additional Info

Field Value
Source https://www.amerigeo.org/datasets/feb3c625dc094112bb5281c17679c769
Last Updated July 27, 2021, 02:19 (CDT)
Created July 8, 2021, 23:03 (CDT)
GUID https://www.amerigeo.org/datasets/feb3c625dc094112bb5281c17679c769
Language
dcat_issued 2014-01-14T23:30:11.000Z
dcat_modified 2020-09-08T21:17:24.000Z
dcat_publisher_name NOAA GeoPlatform