Southern Louisiana 1/3 arc-second NAVD 88 Coastal Digital Elevation Model

Description

Modeling and mapping of coastal processes (e.g. tsunamis, hurricane storm-surge, and sea-level rise) requires digital representations of Earth's solid surface, referred to as digital elevation models (DEMs). Some modeling utilizes structured, square-cell DEMs, while others utilize unstructured grids that have no regular cell size or pattern. Usually, these different DEM types are developed independently, even though they are built from the same source bathymetric and topographic datasets. The National Geophysical Data Center (NGDC), an office of the National Oceanic and Atmospheric Administration (NOAA), has developed two bathymetric-topographic square-celled DEMs and one bathymetric-topographic unstructured DEM of southern Louisiana. The DEMs were developed for the Hurricane Forecast Improvement Project (HFIP), with the purpose of developing a new methodology for unstructured grid production from structured square-celled grids. The 1/3 arc-second DEM referenced to North American Vertical Datum of 1988 (NAVD 88) was carefully developed and evaluated. A NAVD 88 to mean high water (MHW) 1/3 arc-second conversion grid derived from VDatum project areas was created to model the relationship between NAVD 88 and MHW in the southern Louisiana region. NGDC combined the NAVD 88 DEM and the conversion grid to develop a 1/3 arc-second MHW DEM. The NAVD 88 DEM was generated from diverse digital datasets in the region. The DEMs were developed to be used for storm surge inundation and sea level rise modeling. The source bathymetric and topographic datasets used in the development of the NAVD 88 DEM were utilized along with the NAVD 88 DEM and derivative grids to develop the NAVD 88 unstructured DEM.

Resources

Name Format Description Link
32 Download NetCDF File https://www.ngdc.noaa.gov/thredds/fileServer/regional/southern_louisiana_13_navd88_2010.nc
23 REST endpoint for Digital Elevation Models Global Mosaic (Color Shaded Relief) ArcGIS image service https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer
21 Download a subset of the NetCDF https://www.ngdc.noaa.gov/thredds/ncss/regional/southern_louisiana_13_navd88_2010.nc/dataset.html
52 Capabilities document for Open Geospatial Consortium Web Map Service for Digital Elevation Models Global Mosaic (Color Shaded Relief) https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer/WMSServer?request=GetCapabilities&service=WMS
50 Web Coverage Service GetCapabilities https://www.ngdc.noaa.gov/thredds/wcs/regional/southern_louisiana_13_navd88_2010.nc?service=WCS&version=1.0.0&request=GetCapabilities
52 Web Map Service GetCapabilities https://www.ngdc.noaa.gov/thredds/wms/regional/southern_louisiana_13_navd88_2010.nc?service=WMS&version=1.3.0&request=GetCapabilities
0 https://www.ncei.noaa.gov/products/coastal-elevation-models
0 NOAA GeoPlatform listing for NCEI Digital Elevation Model (DEM) Extents https://noaa.maps.arcgis.com/home/item.html?id=0afa88a1701749dbbf76fcadca4f77f3
0 NOAA GeoPlatform listing for DEM Global Mosaic (Elevation Values) https://noaa.maps.arcgis.com/home/item.html?id=c876e3c96a8642ab8557646a3b4fa0ff
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
21 Please see website for more information about Coastal DEMs. https://ngdc.noaa.gov/mgg/coastal/coastal.html
0 NOAA GeoPlatform listing for Digital Elevation Models Global Mosaic (Color Shaded Relief) https://noaa.maps.arcgis.com/home/item.html?id=feb3c625dc094112bb5281c17679c769
0 A map service showing the location and coverage of land and seafloor digital elevation models (DEMs) available. https://noaa.maps.arcgis.com/home/item.html?id=d41f39c8a6684c54b62c8f1ab731d5ad
0 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). https://www.ncei.noaa.gov/maps/bathymetry/
21 OPeNDAP Dataset Access Form https://www.ngdc.noaa.gov/thredds/dodsC/regional/southern_louisiana_13_navd88_2010.nc.html
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
33 Report describing the development of the Southern Louisiana DEMs https://www.ngdc.noaa.gov/mgg/dat/dems/regional_tr/southern_louisiana_13_navd88_2010.pdf
0 Shaded relief visualization of a global seamless bathymetry/topography mosaic of digital elevation models at NOAA/NCEI. https://noaa.maps.arcgis.com/home/item.html?id=e11ebaeb19544bb18c2afe440f063062
0 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. https://noaa.maps.arcgis.com/home/item.html?id=e9ba2e7afb7d46cd878b34aa3bfce042
23 REST endpoint for NCEI Digital Elevation Model (DEM) Extents ArcGIS Feature Service https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/ncei_dem_extents/FeatureServer
0 Text search for locating completed and planned DEMs. https://www.ngdc.noaa.gov/mgg/coastal
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
32 NetCDF Markup Language file https://www.ngdc.noaa.gov/thredds/ncml/regional/southern_louisiana_13_navd88_2010.nc?catalog=https%3A%2F%2Fwww.ngdc.noaa.gov%2Fthredds%2Fcatalog%2Fregional%2Fcatalog.html&dataset=regionalDatasetScan%2Fsouthern_louisiana_13_navd88_2010.nc

Tags

  • digital elevation model
  • vertical location
  • topography
  • united states of america
  • international council for science - world data system
  • land surface
  • terrain elevation
  • nesdis
  • icsu-wds
  • south louisiana
  • bathymetry
  • oceans
  • continent
  • national geophysical data center
  • noaa
  • dem
  • north america
  • integrated bathymetry and topography
  • coastal elevation
  • atlantic ocean
  • gulf of mexico
  • u.s. department of commerce
  • 1 meter - < 30 meters
  • earth science
  • doc/noaa/nesdis/ngdc
  • bathymetry/seafloor topography
  • gridded elevations
  • ocean
  • doc/noaa/nesdis/ncei
  • sea floor
  • models/analyses
  • coastal relief
  • topographical relief maps
  • water depth
  • louisiana
  • coastal processes
  • < 1 meter
  • north atlantic ocean
  • seafloor topography
  • national centers for environmental information

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