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Metadata Identifier: gov.noaa.ngdc.mgg.dem:vdatum

Aggregation Info | Bands | Citations | Constraints | Coverage Descriptions | Dimensions | Extents | Formats | Geographic Bounding Box
Georectified Information | Georeferenceable Information | Identifiers | Instruments | Mediums | OnlineResources | Operations
Platforms | Process Steps | Range Elements | Reference Systems | Responsible Parties | Series | Sources | Spatial Grids | Temporal Extents

MD_DataIdentification

Count Component Title Abstract
1 NOAA VDatum DEM Project NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions in the Gulf of Mexico. These integrated bathymetric-topographic DEMs were developed for NOAA Coast Survey Development Laboratory (CSDL) through the American Recovery and Reinvestment Act (ARRA) of 2009 to evaluate the utility of the Vertical Datum Transformation tool (VDatum), developed jointly by NOAA's Office of Coast Survey (OCS), National Geodetic Survey (NGS), and Center for Operational Oceanographic Products and Services (CO-OPS). Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. Coastal Services Center (CSC), the U.S. Office of Coast Survey (OCS), the U.S. Army Corps of Engineers (USACE), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of North American Vertical Datum of 1988 (NAVD 88) or Mean High Water (MHW) and horizontal datum of North American Datum of 1983 (NAD 83). Cell size ranges from 1/3 arc-second (~10 meters) to 1 arc-second (~30 meters).
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SV_Identification

Count Component Title Type
1 Footprints ArcGIS Map Service Digital Elevation Model Footprints ArcGIS Map Service ArcGIS Map Service
1 Color Shaded Relief ArcGIS Map Service Digital Elevation Models: Color Shaded Relief ArcGIS Image Service ArcGIS Image Service
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CI_Citation

Count Component Title Date Citation Identifier
1 Digital Elevation Model Footprints ArcGIS Map Service
    2011-02-15
1 Digital Elevation Models: Color Shaded Relief ArcGIS Image Service
    2011-10-19
1 GCMD Data Center Keywords NASA/GCMD Data Center Keywords
    2015-03-01
    1995-04-24
1 NASA/GCMD Data Resolution Keywords
    1 NASA/GCMD Earth Science Keywords
      1 NASA/GCMD Location Keywords
        1 NASA/GCMD Platform Keywords
          1 GCMD Project Keywords NASA/GCMD Project Keywords
            2015-03-01
            1995-04-24
          2 NASA/Global Change Master Directory (GCMD) Earth Science Services Keywords NASA/GCMD Services Keywords
            2015-03-01
            1995-04-24
          1 NOAA VDatum DEM Project
            2009-12-01
          1 Uncontrolled
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            CI_Series

            Count Component Name Issue Identification Page
            1 NOAA VDatum DEMs Named by primary coastal city, state in DEM.
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            CI_ResponsibleParty

            Count Component Individual Organization Position Email Role Linkage
            5 Citation URL http://www.ngdc.noaa.gov/mgg/inundation/vdatum/vdatum.html
            1 Anna Milan Anna Milan DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Metadata Specialist Anna.Milan@noaa.gov pointOfContact
            6 DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce publisher http://ngdc.noaa.gov/mgg/coastal/coastal.html
            3 DEM Info DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DEM Information dem.info@noaa.gov pointOfContact
            1 NCEI (publisher) DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce publisher
            1 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce publisher
            1 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (comp) originator
            2 Varner, Jesse Jesse Varner DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Jesse.Varner@noaa.gov pointOfContact
            1 Kelly Carignan Kelly Carignan DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce kelly.carignan@noaa.gov pointOfContact
            1 Matt Love Matthew R. Love DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Matthew.Love@noaa.gov pointOfContact
            Unresolved Xlinks
            GCMD User Support Office at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:descriptiveKeywords[3]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]/gmd:CI_Citation[1]/gmd:citedResponsibleParty[1]
            GCMD User Support Office at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:descriptiveKeywords[7]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]/gmd:CI_Citation[1]/gmd:citedResponsibleParty[1]
            GCMD User Support Office at: /gmi:MI_Metadata/gmd:identificationInfo[2]/srv:SV_ServiceIdentification[1]/gmd:descriptiveKeywords[1]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]/gmd:CI_Citation[1]/gmd:citedResponsibleParty[1]
            GCMD User Support Office at: /gmi:MI_Metadata/gmd:identificationInfo[3]/srv:SV_ServiceIdentification[1]/gmd:descriptiveKeywords[1]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]/gmd:CI_Citation[1]/gmd:citedResponsibleParty[1]
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            CI_OnlineResource

            Count Component Linkage Name Description Function
            4 http://gcmd.nasa.gov/learn/keyword_list.html GCMD's Science Keywords and Associated Directory Keywords This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions. information
            2 http://gis.ngdc.noaa.gov/arcgis/rest/services/dem_hillshades/ImageServer Digital Elevation Models: Color Shaded Relief ArcGIS Image Service REST endpoint for Digital Elevation Models: Color Shaded Relief ArcGIS image service search
            1 http://gis.ngdc.noaa.gov/arcgis/services/dem_hillshades/ImageServer/WMSServer?request=GetCapabilities&service=WMS Digital Elevation Models: Color Shaded Relief Web Map Service (WMS) Capabilities document for Open Geospatial Consortium Web Map Service for Digital Elevation Models: Color Shaded Relief search
            2 http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_extents/MapServer DEM Footprints ArcGIS Map Service A map service showing the location and coverage of land and seafloor digital elevation models (DEMs) available. search
            1 http://maps.ngdc.noaa.gov/arcgis/services/web_mercator/dem_extents/MapServer/WMSServer?request=GetCapabilities&service=WMS Digital Elevation Model Footprints Web Map Service (WMS) Capabilities document for Open Geospatial Consortium Web Map Service for Digital Elevation Model Footprints search
            2 http://ngdc.noaa.gov/mgg/coastal/coastal.html Integrated Models of Coastal Relief at NGDC Please see website for more information about Coastal DEMs. information
            1 http://noaa.maps.arcgis.com/home/item.html?id=d41f39c8a6684c54b62c8f1ab731d5ad NOAA GeoPlatform Entry for Digital Elevation Model Footprints NOAA GeoPlatform listing for Digital Elevation Model Footprints ArcGIS Map Service information
            1 http://noaa.maps.arcgis.com/home/item.html?id=feb3c625dc094112bb5281c17679c769 NOAA GeoPlatform Entry for Digital Elevation Models: Color Shaded Relief NOAA GeoPlatform listing for Digital Elevation Models: Color Shaded Relief information
            3 http://www.ngdc.noaa.gov/mgg/inundation/vdatum/vdatum.html NOAA VDatum DEM Project Project web page. information
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            MD_Identifier or RS_Identifier

            none found
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            EX_Extent

            Bounding Box Temporal Extent
            Count Component Description West East North South Start End
            1 -90.75 -85.00 31.25 28.50 2009-01-01
            2 -180 180 90 -90
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            EX_GeographicBoundingBox

            Count Component West East North South
            1 -90.75 -85.00 31.25 28.50
            2 -180 180 90 -90
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            EX_TemporalExtent

            Count Component Start End
            1 2009-01-01
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            MD_Format

            Count Component Name Version specification
            1 ESRI Arc ASCII 1 ASCII text version of ESRI ArcGIS raster format
            1 netCDF 1
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            MD_Medium

            none found
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            MD_Constraints

            Count Component Use Limitation
            1 not for navigation Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series.
            1 copyright statement Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.
            1 NOAA disclaimer While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
            2 These data not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For official navigation products, please refer to the U.S. nautical charts available from the NOAA Office of Coast Survey: http://www.nauticalcharts.noaa.gov.
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            MD_ReferenceSystem

            none found
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            MD_GridSpatialRepresentation

            none found
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            MD_Georeferenceable or MI_Georeferenceable

            none found
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            MD_Georectified or MI_Georectified

            none found
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            MD_Dimension

            none found
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            MD_CoverageDescription or MI_CoverageDescription

            none found
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            MD_Band or MI_Band

            none found
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            MI_RangeElementDescription

            none found
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            MD_AggregateInformation

            none found
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            LE_Source or LI_Source

            none found
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            LE_ProcessStep or LI_ProcessStep

            Count Component DateTime Description
            1 2009-12-01T00:00:00 All datasets obtained by NGDC are converted to common horizontal and vertical datums of NAD 83 geographic and NAVD 88, respectively, using FME and VDatum transformation tool. They are also converted to common file format, ESRI point shapefiles, for visualization and inspection.
            1 2009-12-01T00:00:00 Datasets are visually inspected with ArcGIS for identification and editing of data anomalies. Datasets are then compared with overlapping datasets to ensure data consistency.
            1 2009-12-01T00:00:00 xyz files of the bathymetric data are surfaced using GMT's 'surface' tool onto a 1 arc-second grid that is interpolated to fill empty cells. Points extracted every 10 meters along the coastline are also included to ensure that the bathymetric grid reaches zero at the coast. The resulting Arc ASCII grid is imported into ArcGIS and clipped to the coastline to remove values over land.
            1 2009-12-01T00:00:00 xyz files for each input dataset are 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 is given to more recent, higher-accuracy datasets. Gridding is typically performed in quadrants, each with a 5% data buffer. The grids are imported in ArcGIS and seamlessly merged to create an NAVD 88 DEM.
            1 2009-12-01T00:00:00 The DEMs are quantitatively evaluated by comparing with source datasets and with elevation values extracted from NGS geodetic monuments. They are visually evaluated by converting to UTM-zone coordinates (units of meters horizontally and vertically) and then creating a slope grid to identify gridding artifacts in the DEMs.
            1 2009-12-01T00:00:00 NOAA's VDatum transformation tool is used to derive an NAVD 88-to-MHW conversion grid. This grid is then added to the NAVD 88 DEM to create a MHW DEM.
            1 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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            MI_Operation

            none found
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            MI_Platform

            none found
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            MI_Instrument

            none found
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