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U.S. Virgin Islands: Continuously Updated Digital Elevation Model (CUDEM) - 1/9 Arc-Second Resolution Bathymetric-Topographic Tiles
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    dateStamp:  2022-06-10
    metadataStandardName:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
    metadataStandardVersion:  ISO 19115-2:2009(E)
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                title:  North American Datum 1983
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                    date:  2007-01-19
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                title:  VIVD09 height
                alternateTitle:  Virgin Islands Vertical Datum of 2009 height (m)
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                    date:  2019-09-17
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        citation:  (CI_Citation)
            title:  U.S. Virgin Islands: Continuously Updated Digital Elevation Model (CUDEM) - 1/9 Arc-Second Resolution Bathymetric-Topographic Tiles
            date:  (CI_Date)
                date:  2022-06-10
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                date:  2022-06-03
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                  Anchor:  DOI doi:10.25921/ds9v-ky35
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                    title:  NOAA National Centers for Environmental Information
                    date: (inapplicable)
                code:  NCEI Metadata ID: gov.noaa.ngdc.mgg.dem:499919
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                organisationName:  NOAA National Centers for Environmental Information
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            presentationForm:  (CI_PresentationFormCode) mapDigital
            series:  (CI_Series)
                name:  CUDEM
        abstract:  NOAA's National Centers for Environmental Information (NCEI) is developing a suite of digital elevation models (DEMs) for the U.S. coast to support a variety of NOAA missions, including improved inundation modeling and mapping, habitat characterization, and visualization of Earth's surface. The DEMs are being developed according to a 0.25 degree tiling scheme. The spatial resolution of the tiles "telescopes" from the coastal zone to the deep ocean floor at 1/9, 1/3, and 3 arc-second grid resolution. Only the 1/9 arc-second DEM tiles integrate both bathymetric and topographic data; all other resolutions map bathymetry only. The tiling of the DEMs facilitates targeted, rapid updates as new coastal and marine elevation data are acquired and become available. Bathymetric and topographic data utilized for DEM creation originate from a variety of sources, including (but not limited to) the NOAA Office of Coast Survey, NOAA National Geodetic Survey, NOAA Office for Coastal Management, U.S. Geological Survey, and the U.S. Army Corps of Engineers. The DEMs are referenced vertically to U.S. Virgin Islands Vertical Datum of 2002 height (m) . The vertical units of the DEMs are meters. The DEMs are referenced horizontally to NAD 83. The horizontal units of the data are decimal degrees.
        purpose:  This data is available to the public for a wide variety of uses including scientific research and analysis.
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            organisationName:  NOAA National Centers for Environmental Information
            positionName:  DEM Information
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        descriptiveKeywords:  (MD_Keywords)
            keyword:  Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
            keyword:  Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
            keyword:  Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
            keyword:  Earth Science > Land Surface > Topography > Terrain Elevation
            keyword:  Earth Science > Oceans > Coastal Processes > Coastal Elevation
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Science Keywords
                date:  (CI_Date)
                    date:  2020-01-09
                    dateType:  (CI_DateTypeCode) publication
                edition:  9.1
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NASA Goddard Space Flight Center, Earth Science Data and Information System
                    contactInfo:  (CI_Contact)
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                            linkage: https://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords
                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  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.
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                    role:  (CI_RoleCode) custodian
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Models/Analyses > DEM > Digital Elevation Model
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                title:  Global Change Master Directory (GCMD) Platform Keywords
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                            linkage: https://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords
                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  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.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) custodian
        descriptiveKeywords:  (MD_Keywords)
            keyword:  1 meter - < 30 meters
            type:  (MD_KeywordTypeCode) dataResolution
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
                date:  (CI_Date)
                    date:  2020-01-09
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                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  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.
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            keyword:  < 1 meter
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                title:  Global Change Master Directory (GCMD) Vertical Data Resolution Keywords
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                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  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.
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            keyword:  Coastal Relief
            keyword:  Gridded elevations
            keyword:  Integrated bathymetry and topography
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            keyword:  Ocean > Atlantic Ocean > North Atlantic Ocean > Caribbean Sea
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            keyword:  Vertical Location > Sea Floor
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                title:  Global Change Master Directory (GCMD) Location Keywords
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                            linkage: https://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords
                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  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.
                            function:  (CI_OnLineFunctionCode) information
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            keyword:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
            keyword:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
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                title:  Global Change Master Directory (GCMD) Data Center Keywords
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                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  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.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) custodian
        resourceConstraints:  (MD_LegalConstraints)
            accessConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
        resourceConstraints:  (MD_Constraints)
            useLimitation:  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.
        resourceConstraints:  (MD_Constraints)
            useLimitation:  Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
        resourceConstraints:  (MD_LegalConstraints)
            useLimitation:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Cite as: Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder. 2014: Continuously Updated Digital Elevation Model (CUDEM) - 1/9 Arc-Second Resolution Bathymetric-Topographic Tiles. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/ds9v-ky35. Accessed [date].
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            aggregateDataSetName:  (CI_Citation)
                title:  Continuously Updated Digital Elevation Model (CUDEM) Program
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                    date:  2018-01-01
                    dateType:  (CI_DateTypeCode) publication
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                    organisationName:  NOAA National Centers for Environmental Information
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                            name:  Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder
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            associationType:  (DS_AssociationTypeCode) collectiveTitle
        spatialRepresentationType:  (MD_SpatialRepresentationTypeCode) grid
        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) elevation
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  -65.25
                eastBoundLongitude:  -64.25
                southBoundLatitude:  17.50
                northBoundLatitude:  18.75
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    contentInfo:  (MI_CoverageDescription)
        attributeDescription:
          RecordType:  Measure of elevation values in meters.
        contentType:  (MD_CoverageContentTypeCode) image
        dimension:  (MI_Band)
            descriptor:  Band 1
            units:
              BaseUnit:
                identifier:  urn:ogc:def:uom:OGC::m
                name:  meter
                unitsSystem:  http://www.bipm.fr/en/si/
            bitsPerValue:  32
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                fees:  In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
                orderingInstructions:  Contact NCEI for other distribution options and instructions.
            distributorFormat:  (MD_Format)
                name:  netCDF
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                    linkage: https://www.ngdc.noaa.gov/thredds/catalog/tiles/catalog.html
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                    name:  Download NetCDF Files
                    description:  THREDDS Data Server containing the Continuously Updated Digital Elevation Model (CUDEM) Bathymetric-Topographic Tiles.
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                    linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9529
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
        report:  (DQ_AbsoluteExternalPositionalAccuracy)
            nameOfMeasure:  Horizontal Positional Accuracy Report
            evaluationMethodDescription:  The horizontal accuracy of a DEM is dependent upon the accuracy of the source datasets used in its creation in conjunction with the spatial resolution of the DEM. The horizontal accuracy of the source data collected using modern surveying techniques and equipment (e.g. Global Navigation Satellite Systems) is assumed to be 1 meter or better. Data acquired before the advent and widespread adoption of modern surveying techniques are likely less accurate. No quantitative horizontal accuracy analyses have been performed on the DEM tiles.
            result: (missing)
        report:  (DQ_AbsoluteExternalPositionalAccuracy)
            nameOfMeasure:  Vertical Positional Accuracy Report
            evaluationMethodDescription:  The vertical accuracy of a DEM is dependent upon the accuracy of the source datasets used in its creation in conjunction with the spatial resolution of the DEM. The vertical accuracy of topographic data collected using modern surveying techniques and equipment (e.g. lidar) is assumed to be, at worst, better than 0.5 meters RMSE. The vertical accuracy of bathymetric data is dependent on a variety of factors, including acquisition sensor/platform, post-processing, environmental conditions and surveyed depth range. No quantitative vertical accuracy analyses have been performed. on the DEM tiles.
            result: (missing)
        report:  (DQ_CompletenessCommission)
            evaluationMethodDescription:  Every effort is made to obtain the best-available (e.g. most recent) source bathymetric and topographic information in an area prior to DEM creation. The tiling of the DEMs facilitates targeted, rapid updates as new coastal and marine elevation data are acquired and become available.
            result: (unknown)
        report:  (DQ_ConceptualConsistency)
            measureDescription:  All data is reviewed and evaluated for internal and external consistency with adjacent data prior to DEM creation. Anomalies are removed through visual inspection and automated filtering.
            result: (unknown)
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  Common horizontal reference frames and vertical datums are established among disparate data and data are converted to a common data format, ASCII xyz, prior to gridding/interpolating. A variety of software can be used for projection/datum transformations and format conversions, including (but not limited to) Geospatial Data Abstraction Library (GDAL) software utilities, VDatum, ArcGIS, LAStools, etc. Once consistency among the input source data is established, the DEM surface is created through gridding and interpolation. Elevations in grid-cells constrained by source measurements are assigned a value according to a weighted average of all samples located within the particular cell, while elevations in unconstrained grid-cells are estimated through interpolation. Please see the DEM technical reports for a more detailed explanation of specific processing steps.
                dateTime:
                  DateTime:  2018-02-01T00:00:00
                processor:  (CI_ResponsibleParty)
                    organisationName:  NOAA National Centers for Environmental Information
                    positionName:  DEM Information
                    contactInfo:  (CI_Contact)
                        address:  (CI_Address)
                            electronicMailAddress:  dem.info@noaa.gov
                    role:  (CI_RoleCode) pointOfContact
            source:  (LI_Source)
                description:  Source Contribution:DEM source data
                sourceCitation:  (CI_Citation)
                    title:  DEM Development Reports
                    date:  (CI_Date)
                        date:  2018-02-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/NESDIS/NGDC > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (inapplicable)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://www.ngdc.noaa.gov/mgg/dat/dems/tiled_tr
                                name:  DEM Development Reports
                                description:  Please refer to the DEM Development Reports for detailed information regarding the source data used in creation of a specific DEM tile.
                                function:  (CI_OnLineFunctionCode) download
                        role: (inapplicable)
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) repository
            levelDescription:  (MD_ScopeDescription)
                other:  NOAA National Centers for Environmental Information
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  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.
                dateTime:
                  DateTime:  2015-04-22T00:00:00
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        maintenanceNote:  Modified for compliance to NCEI Template v1.2.