Continuously Updated Digital Elevation Model (CUDEM) - 1/3 Arc-Second Resolution Bathymetric-Topographic Tiles
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title: Continuously Updated Digital Elevation Model (CUDEM) - 1/3 Arc-Second Resolution Bathymetric-Topographic Tiles
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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.
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keyword: Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
keyword: Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
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title: Global Change Master Directory (GCMD) Vertical Data Resolution Keywords
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keyword: Coastal Relief
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keyword: Continent > North America > United States of America
keyword: Vertical Location > Land Surface
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keyword: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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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.
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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.
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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.
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otherConstraints: Cite as: Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder. 2014: Continuously Updated Digital Elevation Model (CUDEM) - 1/3 Arc-Second Resolution Bathymetric-Topographic Tiles. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/0mpp-h192. Accessed [date].
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distributorTransferOptions: (MD_DigitalTransferOptions)
onLine: (CI_OnlineResource)
linkage: https://doi.org/10.25921/0mpp-h192
protocol: HTTPS
name: DOI Landing Page
function: (CI_OnLineFunctionCode) information
distributorTransferOptions: (MD_DigitalTransferOptions)
onLine: (CI_OnlineResource)
linkage: https://www.ngdc.noaa.gov/thredds/catalog/tiles/catalog.html
protocol: HTTPS
name: Download NetCDF Files
description: THREDDS Data Server containing the Continuously Updated Digital Elevation Model (CUDEM) Bathymetric-Topographic Tiles.
function: (CI_OnLineFunctionCode) download
distributorTransferOptions: (MD_DigitalTransferOptions)
onLine: (CI_OnlineResource)
linkage: https://coast.noaa.gov/dataviewer/#/
protocol: HTTPS
name: Customized Download
description: Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
function: (CI_OnLineFunctionCode) download
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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)
source: (LI_Source)
description: Source Contribution: vertical datum transformation tool ; Source Type: online
sourceCitation: (CI_Citation)
title: VDatum Vertical Datum Transformation software
date: (CI_Date)
date: 2007-10-01
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: NOAA National Ocean Service (NOS)
role: (CI_RoleCode) originator
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: (inapplicable)
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: http://vdatum.noaa.gov/welcome.html
name: VDatum
description: VDatum Vertical Datum Transformation software
function: (CI_OnLineFunctionCode) download
role: (inapplicable)
presentationForm: (CI_PresentationFormCode) modelDigital
otherCitationDetails:
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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.