| Continuously Updated Digital Elevation Model (CUDEM) - 1/3 Arc-Second Resolution Bathymetric-Topographic Tiles | spatialRepresentationInfo|
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| (MI_Metadata) fileIdentifier: gov.noaa.ngdc.mgg.dem:199913 hierarchyLevel: (MD_ScopeCode) dataset contact: (CI_ResponsibleParty) organisationName: NOAA National Centers for Environmental Information contactInfo: (CI_Contact) address: (CI_Address) electronicMailAddress: ncei.info@noaa.gov onlineResource: (CI_OnlineResource) linkage: https://www.ncei.noaa.gov/contact name: NCEI Contact Information description: Information for contacts at NCEI. function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) pointOfContact dateStamp: 2021-12-15 metadataStandardName: ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data metadataStandardVersion: ISO 19115-2:2009(E) return to top spatialRepresentationInfo: (MD_Georectified) numberOfDimensions: 2 axisDimensionProperties: (MD_Dimension) dimensionName: (MD_DimensionNameTypeCode) row dimensionSize: 2712 resolution: Measure: 0.00009259259 axisDimensionProperties: (MD_Dimension) dimensionName: (MD_DimensionNameTypeCode) column dimensionSize: 2712 resolution: Measure: 0.00009259259 axisDimensionProperties: (MD_Dimension) dimensionName: (MD_DimensionNameTypeCode) vertical dimensionSize: 1 cellGeometry: (MD_CellGeometryCode) area transformationParameterAvailability: true checkPointAvailability: false pointInPixel: (MD_PixelOrientationCode) center return to top referenceSystemInfo: (MD_ReferenceSystem) referenceSystemIdentifier: (RS_Identifier) authority: (CI_Citation) title: North American Datum 1983 alternateTitle: NAD83 date: (CI_Date) date: 2007-01-19 dateType: (CI_DateTypeCode) revision citedResponsibleParty: (CI_ResponsibleParty) organisationName: (withheld) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269 name: NAD83 description: Link to Geographic Markup Language (GML) description of reference system. function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) resourceProvider citedResponsibleParty: (CI_ResponsibleParty) organisationName: European Petroleum Survey Group contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: http://www.epsg-registry.org/ name: European Petroleum Survey Group Geodetic Parameter Registry description: Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations. function: (CI_OnLineFunctionCode) search role: (CI_RoleCode) publisher code: urn:ogc:def:crs:EPSG::4269 return to top referenceSystemInfo: (MD_ReferenceSystem) referenceSystemIdentifier: (RS_Identifier) authority: (CI_Citation) title: North American Vertical Datum 1988 alternateTitle: NAVD88 date: (CI_Date) date: 2012-08-10 dateType: (CI_DateTypeCode) revision citedResponsibleParty: (CI_ResponsibleParty) organisationName: (withheld) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:datum:EPSG::5103 name: NAVD88 description: Link to Geographic Markup Language (GML) description of reference system. function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) resourceProvider citedResponsibleParty: (CI_ResponsibleParty) organisationName: European Petroleum Survey Group contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: http://www.epsg-registry.org/ name: European Petroleum Survey Group Geodetic Parameter Registry description: Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations. function: (CI_OnLineFunctionCode) search role: (CI_RoleCode) publisher code: urn:ogc:def:datum:EPSG::5103 return to top identificationInfo: (MD_DataIdentification) citation: (CI_Citation) title: Continuously Updated Digital Elevation Model (CUDEM) - 1/3 Arc-Second Resolution Bathymetric-Topographic Tiles date: (CI_Date) date: 2014-12-09 dateType: (CI_DateTypeCode) publication identifier: (MD_Identifier) authority: (CI_Citation) title: International DOI Foundation (IDF) date: (inapplicable) code: Anchor: DOI doi:10.25921/ds9v-ky35 identifier: (MD_Identifier) authority: (CI_Citation) title: NOAA National Centers for Environmental Information date: (inapplicable) code: NCEI Metadata ID: gov.noaa.ngdc.mgg.dem:199919 citedResponsibleParty: (CI_ResponsibleParty) organisationName: NOAA National Centers for Environmental Information role: (CI_RoleCode) publisher citedResponsibleParty: (CI_ResponsibleParty) organisationName: Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder role: (CI_RoleCode) author 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 the North American Vertical Datum of 1988. The vertical units of the DEMs are meters. The DEMs are referenced horizontally to the North American Datum of 1983. 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. status: (MD_ProgressCode) onGoing status: (MD_ProgressCode) historicalArchive pointOfContact: (CI_ResponsibleParty) organisationName: NOAA National Centers for Environmental Information contactInfo: (CI_Contact) address: (CI_Address) electronicMailAddress: ncei.info@noaa.gov onlineResource: (CI_OnlineResource) linkage: https://www.ncei.noaa.gov/contact name: NCEI Contact Information description: Information for contacts at NCEI. function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) pointOfContact pointOfContact: (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 resourceMaintenance: (MD_MaintenanceInformation) maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) asNeeded 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) onlineResource: (CI_OnlineResource) 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: Models/Analyses > DEM > Digital Elevation Model type: (MD_KeywordTypeCode) platform thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Platform 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) onlineResource: (CI_OnlineResource) 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 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) onlineResource: (CI_OnlineResource) 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 type: (MD_KeywordTypeCode) dataResolution thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Vertical Data Resolution 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) onlineResource: (CI_OnlineResource) 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: Coastal Relief keyword: Gridded elevations keyword: Integrated bathymetry and topography type: (MD_KeywordTypeCode) theme thesaurusName: (CI_Citation) title: Uncontrolled date: (unknown) descriptiveKeywords: (MD_Keywords) keyword: Continent > North America > United States of America keyword: Vertical Location > Land Surface keyword: Vertical Location > Sea Floor type: (MD_KeywordTypeCode) place thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Location 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) onlineResource: (CI_OnlineResource) 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: 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 type: (MD_KeywordTypeCode) dataCentre thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Data Center 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) onlineResource: (CI_OnlineResource) 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 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) - 1/3 Arc-Second Resolution Bathymetric-Topographic Tiles. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/0mpp-h192. Accessed [date]. aggregationInfo: (MD_AggregateInformation) aggregateDataSetName: (CI_Citation) title: Continuously Updated Digital Elevation Model (CUDEM) Program date: (CI_Date) date: 2018-01-01 dateType: (CI_DateTypeCode) publication citedResponsibleParty: (CI_ResponsibleParty) organisationName: NOAA National Centers for Environmental Information contactInfo: (CI_Contact) address: (CI_Address) city: Boulder administrativeArea: CO role: (CI_RoleCode) publisher citedResponsibleParty: (CI_ResponsibleParty) positionName: Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://cires.colorado.edu/ name: Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder description: Cooperative Institute for Research in Environmental Sciences (CIRES) function: (CI_OnLineFunctionCode) originator role: (inapplicable) associationType: (DS_AssociationTypeCode) collectiveTitle spatialRepresentationType: (MD_SpatialRepresentationTypeCode) grid language: eng; USA topicCategory: (MD_TopicCategoryCode) elevation extent: (EX_Extent) geographicElement: (EX_GeographicBoundingBox) westBoundLongitude: -127 eastBoundLongitude: -65 southBoundLatitude: 23 northBoundLatitude: 52 return to top 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 return to top distributionInfo: (MD_Distribution) distributor: (MD_Distributor) distributorContact: (CI_ResponsibleParty) organisationName: NOAA National Centers for Environmental Information contactInfo: (CI_Contact) address: (CI_Address) electronicMailAddress: ncei.info@noaa.gov onlineResource: (CI_OnlineResource) linkage: https://www.ncei.noaa.gov/contact name: NCEI Contact Information description: Information for contacts at NCEI. function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) distributor distributionOrderProcess: (MD_StandardOrderProcess) 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 version: 4 Classic distributorFormat: (MD_Format) name: Geotiff version: (unknown) distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.dem:199913/html protocol: HTTPS name: Metadata 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/#/lidar/search/where:ID=8580 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 distributorTransferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: https://coast.noaa.gov/htdata/raster2/elevation/NCEI_third_Topobathy_2014_8580/ protocol: HTTPS name: Bulk Download description: Simple download of data files. function: (CI_OnLineFunctionCode) download return to top 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: return to top 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 return to top metadataMaintenance: (MD_MaintenanceInformation) maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) asNeeded maintenanceNote: Modified for compliance to NCEI Template v1.2. | |