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contentInfo
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distributionInfo
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acquisitionInformation

US-Total Electron Content Product (USTEC)
 (MI_Metadata)
    fileIdentifier:  gov.noaa.ngdc.stp.ionosphere:G10009
    language:  eng; USA
    characterSet:  (MD_CharacterSetCode) utf8
    hierarchyLevel:  (MD_ScopeCode) dataset
    contact:  (CI_ResponsibleParty)
        individualName:  Redmon, Robert
        organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce
        contactInfo:  (CI_Contact)
            phone:  (CI_Telephone)
                voice:  303-497-4331
            address:  (CI_Address)
                deliveryPoint:  325 Broadway
                city:  Boulder
                administrativeArea:  CO
                postalCode:  80305-3328
                country:  USA
                electronicMailAddress:  ionosonde@noaa.gov
            hoursOfService:  7:30-5:00 Mountain
            contactInstructions:
        role:  (CI_RoleCode) pointOfContact
    dateStamp:  2015-09-18
    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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    identificationInfo:  (MD_DataIdentification)
        citation:  (CI_Citation)
            title:  US-Total Electron Content Product (USTEC)
            date:  (CI_Date)
                date:  2006-04-01
                dateType:  (CI_DateTypeCode) publication
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                role:  (CI_RoleCode) publisher
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NWS/NCEP/SWPC > Space Weather Prediction Center, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  Unknown
                    address:  (CI_Address)
                        deliveryPoint:  NOAA/ National Weather Service National Centers for Environmental Prediction Space Weather Prediction Center, W/NP9 325 Broadway
                        city:  Boulder
                        administrativeArea:  CO
                        postalCode:  80305
                        country:  USA
                        electronicMailAddress:  SWPC.CustomerSupport@noaa.gov
                role:  (CI_RoleCode) originator
            citedResponsibleParty:  (CI_ResponsibleParty)
                positionName: (withheld)
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://www.swpc.noaa.gov/ustec/
                        protocol:  http
                        name:  Real-time US-Total Electron Content: Vertical and Slant
                        description:  Vertical and Slant Total Electron Content, TEC uncertainty, Difference from 10-day average indicating recent trends and GPS stations used in calculation during each 15 minute period.
                        function:  (CI_OnLineFunctionCode) information
                role: (inapplicable)
            citedResponsibleParty:  (CI_ResponsibleParty)
                positionName: (withheld)
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://www.ngdc.noaa.gov/stp/iono/ustec/
                        protocol:  http
                        name:  US Total Electron Content (Vertical and Slant) Product Archive
                        description:  Home page of USTEC Product Archive
                        function:  (CI_OnLineFunctionCode) information
                role: (inapplicable)
        abstract:  The US Total Electron Content (US-TEC) product is designed to specify TEC over the Continental US (CONUS) in near real-time. The product uses a Kalman Filter data assimilation model, described in the Technical Documentation. This technique is driven by data from ground-based Global Positioning System (GPS) dual frequency receivers. The primary data stream comes from the Maritime and Nationwide Differential GPS (M/NDGPS) real time network of stations operated by the US Coast Guard (USCG). As of January 2006, there were about 130 stations ingested into the model. This number has been gradually increasing and will be augmented by Federal Aviation Administration/Wide Area Augmentation System (FAA/WAAS) data, and new stations in areas with poor coverage. This product has evolved through a collaboration between the Space Weather Prediction Center (SWPC), the National Geodetic Survey (NGS), the NOAA National Centers for Environmental Information (formerly National Geophysical Data Center), and the Global Systems Division (GSD).
        purpose:  The product is designed for single and dual frequency GPS applications. The TEC and slant path maps can be used to estimate the GPS signal delay due to the ionospheric electron content between a receiver and a GPS satellite. Of particular interest to users is the link to Data files which provides not only tabular values of the total electron content, but also values of line-of-sight (LOS) or slant path electron content to each GPS satellite in view over the CONUS. For each GPS satellite in view the LOS maps provide 1 degree x1 degree two-dimensional grids over the CONUS.
        status:  (MD_ProgressCode) underDevelopment
        pointOfContact:  (CI_ResponsibleParty)
            individualName:  Redmon, Robert
            organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce
            contactInfo:  (CI_Contact)
                phone:  (CI_Telephone)
                    voice:  303-497-4331
                address:  (CI_Address)
                    deliveryPoint:  325 Broadway
                    city:  Boulder
                    administrativeArea:  CO
                    postalCode:  80305-3328
                    country:  USA
                    electronicMailAddress:  ionosonde@noaa.gov
                hoursOfService:  7:30-5:00 Mountain
                contactInstructions:
            role:  (CI_RoleCode) pointOfContact
        resourceMaintenance:  (MD_MaintenanceInformation)
            maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) daily
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Earth Science > Sun-Earth Interactions > Ionosphere/Magnetosphere Particles
            keyword:  Earth Science > Sun-Earth Interactions > Solar Energetic Particle Properties > Total Electron Content
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  NASA/GCMD Earth Science Keywords
                date: (unknown)
        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) dataCenter
            thesaurusName:  (CI_Citation)
                title:  NASA/GCMD Data Center Keywords
                date:  (CI_Date)
                    date:  2015-03-01
                    dateType:  (CI_DateTypeCode) revision
                date:  (CI_Date)
                    date:  1995-04-24
                    dateType:  (CI_DateTypeCode) publication
                edition:  8.1
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NASA
                    positionName:  GCMD User Support Office
                    contactInfo:  (CI_Contact)
                        address:  (CI_Address)
                            electronicMailAddress:  gcmduso@gcmd.gsfc.nasa.gov
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
                            name:  GCMD Feedback Form
                            description:  Have a Comment for the GCMD?
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) publisher
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (inapplicable)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://gcmd.nasa.gov/learn/keyword_list.html
                            name:  GCMD's Science Keywords and Associated Directory Keywords
                            description:  This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
                            function:  (CI_OnLineFunctionCode) information
                    role: (inapplicable)
        resourceConstraints:  (MD_Constraints)
            useLimitation:  None
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Use Constraints: none
        resourceConstraints:  (MD_LegalConstraints)
            accessConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Access Constraints: none
        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) geoscientificInformation
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  -150
                eastBoundLongitude:  -50
                southBoundLatitude:  10
                northBoundLatitude:  60
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    beginPosition:  2004-10-14
                    endPosition:
        supplementalInformation: http://www.swpc.noaa.gov/ustec/docs/USTEC_Doc.html
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    contentInfo:  (MD_CoverageDescription)
        attributeDescription: (unknown)
        contentType: (unknown)
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  Image files (Portable Network Graphics, PNG)
                attributeType: (unknown)
            descriptor:  96 Vertical Total Electron Content files, 96 Uncertainty in TEC files, 96 Recent Trend files
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  Daily Empirical Orthonomal Functions
                attributeType: (unknown)
            descriptor:  The EOFs define the background conditions at the beginning of each day. Produced once (1) per day.
            maxValue:
              Real:  1.0000
            minValue:
              Real:  0.00001
            units:
              UnitDefinition:
                identifier:  TECU (10**16 electrons/m**2)
                name:  TECU (10**16 electrons/m**2)
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  Coefficients for the EOFs
                attributeType: (unknown)
            descriptor:  These coefficients will adjust the background conditions in function of the data ingested. Produced every 15 minutes (96 files).
            maxValue:
              Real:  10.0000
            minValue:
              Real:  -10.0000
            units:
              UnitDefinition:
                identifier:  TECU (10**16 electrons/m**2)
                name:  TECU (10**16 electrons/m**2)
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  Vertical and Slant Data Values in Total Electron Content
                attributeType: (unknown)
            descriptor:  Numerical values of the vertical and slant TEC produced every 15 minutes (96 files).
            maxValue:
              Real:  100.0000
            minValue:
              Real:  0.0000
            units:
              UnitDefinition:
                identifier:  TECU (10**16 electrons/m**2) ** 10
                name:  TECU (10**16 electrons/m**2) ** 10
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  TEC Trend
                attributeType: (unknown)
            descriptor:  Deviation of the Vertical TEC from the average of the most recent 10 previous days used in the total electron content assimilation. Produced every 15 minutes (96 files).
            maxValue:
              Real:  100.000
            minValue:
              Real:  -100.0000
            units:
              UnitDefinition:
                identifier:  TECU (10**16 electrons/m**2)
                name:  TECU (10**16 electrons/m**2)
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  Uncertainty of the vertical TEC
                attributeType: (unknown)
            descriptor:  Expected error of the vertical TEC calculated as a function of the state error and the trend of the values. Produced every 15 minutes (96 files).
            maxValue:
              Real:  7.00
            minValue:
              Real:  2.00
            units:
              UnitDefinition:
                identifier:  TECU (10**16 electrons/m**2) ** 10
                name:  TECU (10**16 electrons/m**2) ** 10
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  Stations used in TEC assimilation
                attributeType: (unknown)
            descriptor:  Data from different sources: CORS (Continuously Operating Reference Stations), GPS-MET (GPS-Meteorological), RTIGS (Real-Time International GNSS Services). Produced every 15 minutes (96 files).
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    contentInfo:  (MD_FeatureCatalogueDescription)
        includedWithDataset:  true
        featureTypes:
          LocalName:
        featureCatalogueCitation: (unknown)
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    distributionInfo:  (MD_Distribution)
        distributionFormat:  (MD_Format)
            name:  ASCII
            version: (unknown)
        distributionFormat:  (MD_Format)
            name:  PNG Plots
            version: (unknown)
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                individualName:  Redmon, Robert
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  303-497-4331
                    address:  (CI_Address)
                        deliveryPoint:  325 Broadway
                        city:  Boulder
                        administrativeArea:  CO
                        postalCode:  80305-3328
                        country:  USA
                        electronicMailAddress:  ionosonde@noaa.gov
                    hoursOfService:  7:30-5:00 Mountain
                    contactInstructions:
                role:  (CI_RoleCode) pointOfContact
            distributionOrderProcess:  (MD_StandardOrderProcess)
                fees:  Free download availability
        transferOptions:  (MD_DigitalTransferOptions)
            onLine:  (CI_OnlineResource)
                linkage: http://www.swpc.noaa.gov/ustec/
                protocol:  http
                name:  Real-time US-Total Electron Content: Vertical and Slant
                description:  Vertical and Slant Total Electron Content, TEC uncertainty, Difference from 10-day average indicating recent trends and GPS stations used in calculation during each 15 minute period.
                function:  (CI_OnLineFunctionCode) information
            onLine:  (CI_OnlineResource)
                linkage: http://www.ngdc.noaa.gov/stp/iono/ustec/
                protocol:  http
                name:  US Total Electron Content (Vertical and Slant) Product Archive
                description:  Home page of USTEC Product Archive
                function:  (CI_OnLineFunctionCode) information
            onLine:  (CI_OnlineResource)
                linkage: http://www.ngdc.noaa.gov/stp/iono/ustec/products/
                protocol:  http
                name:  Past US-Total Electron Content: Vertical and Slant Data
                description:  Download past US Tec data
                function:  (CI_OnLineFunctionCode) download
            onLine:  (CI_OnlineResource)
                linkage: http://www.ngdc.noaa.gov/stp/iono/ustec/products/
                protocol:  http
                name:  US-Total Electron Content: Vertical and Slant
                description:  Search past Vertical and Slant Total Electron Content
                function:  (CI_OnLineFunctionCode) search
            onLine:  (CI_OnlineResource)
                linkage: http://www.swpc.noaa.gov/ustec/all_tec_plots.html
                protocol:  http
                name:  Real-time US-Total Electron Content: Vertical and Slant
                description:  Real-time plots available for download
                function:  (CI_OnLineFunctionCode) download
            onLine:  (CI_OnlineResource)
                linkage: http://www.swpc.noaa.gov/ustec/text/
            onLine:  (CI_OnlineResource)
                linkage: http://www.ngdc.noaa.gov/stp/iono/ustec/
            onLine:  (CI_OnlineResource)
                linkage: http://www.ngdc.noaa.gov/stp/iono/ustec/products/
            onLine:  (CI_OnlineResource)
                linkage: http://www.swpc.noaa.gov/ustec/all_tec_plots.html
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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) annually
        maintenanceNote:  This metadata was automatically generated from the Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata standard (version FGDC-STD-012-2002) using the 2012-08-08 version of the FGDC RSE to ISO 19115-2 transform.
        maintenanceNote:  Translated from FGDC 2012-10-10T11:10:07.079-06:00
        maintenanceNote:  This record was automatically modified on 2015-09-18 to include references to NCEI where applicable.
        contact:  (CI_ResponsibleParty)
            individualName:  Anna Milan
            organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
            positionName:  Metadata Specialist
            contactInfo:  (CI_Contact)
                phone:  (CI_Telephone)
                    voice:  (303) 497-5099
                    facsimile:  (303) 497-6513
                address:  (CI_Address)
                    deliveryPoint:  Mail Code E/NE52
                    deliveryPoint:  325 Broadway
                    city:  Boulder
                    administrativeArea:  CO
                    postalCode:  80305-3328
                    country:  USA
                    electronicMailAddress:  Anna.Milan@noaa.gov
                hoursOfService:  9:00 - 5:00 Mountain
            role:  (CI_RoleCode) pointOfContact
        contact:  (CI_ResponsibleParty)
            individualName:  Redmon, Robert
            organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce
            contactInfo:  (CI_Contact)
                phone:  (CI_Telephone)
                    voice:  303-497-4331
                address:  (CI_Address)
                    deliveryPoint:  325 Broadway
                    city:  Boulder
                    administrativeArea:  CO
                    postalCode:  80305-3328
                    country:  USA
                    electronicMailAddress:  ionosonde@noaa.gov
                hoursOfService:  7:30-5:00 Mountain
                contactInstructions:
            role:  (CI_RoleCode) pointOfContact
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    acquisitionInformation:  (MI_AcquisitionInformation)
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  Global Positioning System
            type: (missing)
        operation:  (MI_Operation)
            identifier:  (MD_Identifier)
                code:  The TEC and slant path maps can be used to estimate the GPS signal delay due to the ionospheric electron content between a receiver and a GPS satellite
            status: (missing)
            parentOperation: (inapplicable)
        platform:  (MI_Platform)
            identifier:  (MD_Identifier)
                code:  GPS > Global Positioning System
            description:  The U.S. Air Force of the Department of Defense developed, maintains, and operates the space and control segments of the GPS constellation. Full Operational Capability was declared by NAVSTAR in April 1995.
            sponsor:  (CI_ResponsibleParty)
                organisationName:  United States Air Force
                role:  (CI_RoleCode) sponsor
            instrument: (missing)