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International Best Track Archive for Climate Stewardship (IBTrACS) Project, Version 4


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    dateStamp:  2023-07-06
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    metadataStandardVersion:  ISO 19115-2:2009(E)
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        citation:  (CI_Citation)
            title:  International Best Track Archive for Climate Stewardship (IBTrACS) Project, Version 4
            alternateTitle:  IBTrACS
            date:  (CI_Date)
                date:  2019-02-15
                dateType:  (CI_DateTypeCode) publication
            edition:  Version 4
            identifier:  (MD_Identifier)
                code:
                  Anchor:  DOI doi:10.25921/82ty-9e16
            identifier:  (MD_Identifier)
                code:  NCEI DSI 9637_02
            identifier:  (MD_Identifier)
                code:  gov.noaa.ncdc:C01552
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                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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                individualName:  Kenneth R.
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                positionName:  Meteorologist
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                        electronicMailAddress:  Ken.Knapp@noaa.gov
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                individualName:  Kenneth R.
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                individualName:  Howard J.
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                individualName:  Howard J.
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                individualName:  James P.
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                individualName:  James P.
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                individualName:  Michael C.
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                individualName:  Michael C.
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                individualName:  Carl J.
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                individualName:  Carl J.
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                        linkage: https://www.ncdc.noaa.gov/ibtracs/
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                        name:  IBTrACS website
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        abstract:  The International Best Track Archive for Climate Stewardship (IBTrACS) provides location and intensity for global tropical cyclones. The data span from the 1840s to present, generally providing data at 3-hour intervals. While the best track data is focused on position and intensity (maximum sustained wind speed or minimum central pressure), other parameters are provided by some agencies (e.g., radius of maximum winds, environmental pressure, radius of hurricane force winds, etc.) and are likewise provided in IBTrACS. Files are available subset by Basin or time period, where basins include: East Pacific, North Atlantic, North Indian, South Atlantic, South Indian, South Pacific, and the West Pacific. Time periods include: All data, since 1980, and the last 3 years.
        purpose:  Users: reinsurance, forecasters, media, emergency managers, climate monitoring, etc. Use cases: To understand the distribution, frequency and intensity of tropical cyclones. The primary benefit of this dataset is the inclusion of many sources of tropical cyclone data in one place.
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                    deliveryPoint:  151 Patton Avenue
                    deliveryPoint:  Veach-Baley Federal Building, Room 468
                    city:  Asheville
                    administrativeArea:  NC
                    postalCode:  28801-5001
                    country:  USA
                    electronicMailAddress:  ncei.orders@noaa.gov
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            fileName: https://www.ncei.noaa.gov/pub/data/metadata/images/C01552_IBTrACS.png
            fileDescription:  A sample plot of one year of tropical cyclone tracks available in IBTrACS.
            fileType:  PNG
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            keyword:  Earth Science > Human Dimensions > Natural Hazards > Tropical Cyclones > Hurricanes
            keyword:  Earth Science > Human Dimensions > Natural Hazards > Tropical Cyclones > Cyclones
            keyword:  Earth Science > Human Dimensions > Natural Hazards > Tropical Cyclones > Typhoons
            keyword:  Earth Science > Atmosphere > Weather Events > Monsoons
            keyword:  Earth Science > Atmosphere > Precipitation > Liquid Precipitation > Rain
            keyword:  Earth Science > Atmosphere > Atmospheric Winds > Boundary Layer Winds
            keyword:  Earth Science > Atmosphere > Atmospheric Pressure > Anticyclones/Cyclones
            keyword:  Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure
            keyword:  Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Speed/Wind Direction
            keyword:  Earth Science > Oceans > Coastal Processes > Storm Surge
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                title:  Global Change Master Directory (GCMD) Science Keywords
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                    date:  2018
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                    organisationName:  Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA)
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            keyword:  Atmospheric - Surface - Precipitation
            keyword:  Atmospheric - Surface - Wind Speed and Direction
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                title:  Global Climate Observing System (GCOS) Essential Climate Variables (ECVs)
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                    date:  2017
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            keyword:  Geographic Region > Equatorial
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            keyword:  Geographic Region > Tropics
            keyword:  Ocean > Atlantic Ocean > South Atlantic Ocean
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                    role:  (CI_RoleCode) publisher
        resourceConstraints:  (MD_Constraints)
            useLimitation:  The primary limitation is that information is limited to known tropical systems. So those not observed are not recorded (this is much more prevalent prior to satellite observations). Another limitation is that various agencies have different practices when it comes to reporting maximum sustained wind speeds. This makes comparing winds between basins or through time problematic because changes in agencies, personnel or practices can mask underlying climatological shifts (and vice versa).
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Cite as: Knapp, Kenneth R.; Diamond, Howard J.; Kossin, James P.; Kruk, Michael C.; Schreck, Carl J. III (2018). International Best Track Archive for Climate Stewardship (IBTrACS) Project, Version 4. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/82ty-9e16 [access date].
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Users are also asked to cite: Knapp, K. R., M. C. Kruk, D. H. Levinson, H. J. Diamond, and C. J. Neumann, 2010: The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data. Bulletin of the American Meteorological Society, 91, 363-376. doi:10.1175/2009BAMS2755.1
        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.
        aggregationInfo:  (MD_AggregateInformation)
            aggregateDataSetName:  (CI_Citation)
                title:  The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data.
                date:  (CI_Date)
                    date:  2010-03-01
                    dateType:  (CI_DateTypeCode) publication
                identifier:  (MD_Identifier)
                    code: https://doi.org/10.1175/2009BAMS2755.1
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  American Meteorological Society
                    role:  (CI_RoleCode) custodian
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://journals.ametsoc.org/doi/abs/10.1175/2009BAMS2755.1
                            protocol:  HTTPS
                            applicationProfile:  Web Browser
                            name:  The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data.
                            description:  URL pointing to journal article describing IBTrACS
                            function:  (CI_OnLineFunctionCode) information
                    role: (missing)
            associationType:  (DS_AssociationTypeCode) source
            initiativeType:  (DS_InitiativeTypeCode) sciencePaper
        spatialRepresentationType:  (MD_SpatialRepresentationTypeCode) vector
        spatialResolution:  (MD_Resolution)
            distance:
              Distance:  10
        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) climatologyMeteorologyAtmosphere
        environmentDescription:  The processing environment is a Linux server running BASH. Many of the modules use IDL but one process requires perl. Many of the intermediate and final files are netCDF. See documentation for more information.
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                extentTypeCode:  1
                westBoundLongitude:  -180.0
                eastBoundLongitude:  180.0
                southBoundLatitude:  -90.0
                northBoundLatitude:  90.0
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    description:  ground condition
                    beginPosition:  1842-10-25
                    endPosition:
                    timeInterval:  3
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    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-4, Shapefile, CSV
                version:  4
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://doi.org/10.25921/82ty-9e16
                    protocol:  HTTPS
                    applicationProfile:  Landing Page
                    name:  NCEI Dataset Landing Page
                    description:  Landing page for the dataset.
                    function:  (CI_OnLineFunctionCode) information
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                transferSize:
                  Real:  1
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/contact
                    protocol:  HTTPS
                    applicationProfile:  Information
                    name:  NCEI Customer Support Service Page
                    description:  Contact NCEI Customer Support for more information
                    function:  (CI_OnLineFunctionCode) order
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                unitsOfDistribution:  Region: US-central-1
                onLine:  (CI_OnlineResource)
                    linkage: https://console.cloud.google.com/marketplace/details/noaa-public/hurricanes
                    protocol:  HTTPS
                    applicationProfile:  Information
                    name:  Google Cloud Landing Page (Region: US-central-1)
                    description:  Information on Google Cloud data access.
                    function:  (CI_OnLineFunctionCode) information
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
            extent:  #boundingExtent
        lineage:  (LI_Lineage)
            statement:  Prior to receiving the data at NCEI, there is some uncertainty in the lineage as data processing practices at some agencies are better documented than others. The data are produced from real time (during the season) and post-season analysis of TC observations. Thus, there is some uncertainty on what observations were available at a given agency, what practices were in place that might affect intensity estimates and what practices and procedural thresholds were used to track some systems but not others.
            processStep:  (LE_ProcessStep)
                description:  Reformat source data to netCDF
                rationale:  This step reformats all best track files into a uniform netCDF dataset structure. This simplifies further processing.
                dateTime: (missing)
                processor:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    role:  (CI_RoleCode) processor
                source:  sd001
                source:  sd002
                source:  sd003
                source:  sd004
                source:  sd005
                source:  sd006
                source:  sd007
                source:  sd008
                source:  sd009
                source:  sd010
            processStep:  (LE_ProcessStep)
                description:  Identify similar storms and merge data.
                rationale:  The agencies each have different practices for storm identification. Thus, it takes some analysis to determine which tracks from one agency correspond tracks in another.
                dateTime: (missing)
                processor:  (CI_ResponsibleParty)
                    organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                    role:  (CI_RoleCode) processor
                source:  sd011
                processingInformation:  (LE_Processing)
                    identifier: (missing)
                    algorithm:  (LE_Algorithm)
                        citation:  (CI_Citation)
                            title:  A Technique for Combining Global Tropical Cyclone Best Track Data
                            date:  (CI_Date)
                                date:  2010-04-01
                                dateType:  (CI_DateTypeCode) publication
                            citedResponsibleParty:  (CI_ResponsibleParty)
                                organisationName:  American Meteorological Society
                                role: (missing)
                            citedResponsibleParty:  (CI_ResponsibleParty)
                                organisationName: (missing)
                                contactInfo:  (CI_Contact)
                                    onlineResource:  (CI_OnlineResource)
                                        linkage: https://doi.org/10.1175/2009JTECHA1267.1
                                        protocol:  HTTPS
                                        applicationProfile:  Web Browser
                                        name:  A Technique for Combining Global Tropical Cyclone Best Track Data
                                        description:  DOI of the reference
                                        function:  (CI_OnLineFunctionCode) information
                                role: (missing)
                        description:  See Algorithm Citation
            processStep:  (LE_ProcessStep)
                description:  Produce track data for individual storms
                rationale:  Once storms as identified as potentially the same, then analysis is performed to define tracks and output all data into intermediate netCDF files.
                dateTime: (missing)
                processor:  (CI_ResponsibleParty)
                    organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                    role:  (CI_RoleCode) processor
                source:  sd012
            processStep:  (LE_ProcessStep)
                description:  Reformat track data by basin and date.
                rationale:  Many customers need on subsets of IBTrACS. Tracks are split by basin (e.g., North Atlantic, Eastern Pacific, Western Pacific, North Indian, South Indian and South Pacific) or by time period (all years, ears since 1980 or last 3 years). The result are file sets in 3 formats: CSV, shapefile and netCDF.
                dateTime: (missing)
                processor:  (CI_ResponsibleParty)
                    organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                    role:  (CI_RoleCode) processor
            source:  (LE_Source)
                description:  U.S. National Hurricane Center Best Track Data
                sourceCitation:  (CI_Citation)
                    title:  Cyclone data from National Hurricane Center
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  National Hurricane Center
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: ftp://ftp.nhc.noaa.gov/atcf/archive/
                                applicationProfile:  Web Browser
                                name:  Cyclone data from National Hurricane Center
                                description:  FTP location for historic NHC best tracks
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceStep:  ps001
            source:  (LE_Source)
                description:  U.S. Joint Typhoon Warning Center best track data
                sourceCitation:  (CI_Citation)
                    title:  Cyclone data from Joint Typhoon Warning Center
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Joint Typhoon Warning Center
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.metoc.navy.mil/jtwc/jtwc.html?best-tracks
                                applicationProfile:  Web Browser
                                name:  Cyclone data from Joint Typhoon Warning Center
                                description:  Best track data source files.
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceStep:  ps001
            source:  (LE_Source)
                description:  RSMC Tokyo (Japanese Meteorological Agency)
                sourceCitation:  (CI_Citation)
                    title:  Cyclone data from RSMC Tokyo (JMA)
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  RSMC Tokyo (JMA)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/besttrack.html
                                protocol:  HTTPS
                                applicationProfile:  Web Browser
                                name:  Cyclone data from RSMC Tokyo (JMA)
                                description:  Website providing access to JMA best track data
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceStep:  ps001
            source:  (LE_Source)
                description:  Chinese Metorological Administration best track data from the Shanghai Typhoon Institute
                sourceCitation:  (CI_Citation)
                    title:  Cyclone data from Chinese Meteorological Administration - Shanghai Typhoon Institute
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Chinese Meteorological Administration - Shanghai Typhoon Institute
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://tcdata.typhoon.org.cn/en/zjljsjj_zlhq.html
                                applicationProfile:  Web Browser
                                name:  Cyclone data from Chinese Meteorological Administration - Shanghai Typhoon Institute
                                description:  Website providing access to CMA best track data
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceStep:  ps001
            source:  (LE_Source)
                description:  HKO best tracks data. Data are not available online. The BT file is usually emailed to NCEI upon request.
                sourceCitation:  (CI_Citation)
                    title:  Cyclone data from Hong Kong Observatory
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Hong Kong Observatory
                        role:  (CI_RoleCode) originator
                sourceStep:  ps001
            source:  (LE_Source)
                description:  IMD best track data
                sourceCitation:  (CI_Citation)
                    title:  Cyclone data from RSMC New Delhi (IMD)
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  RSMC New Delhi (IMD)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.rsmcnewdelhi.imd.gov.in/index.php?option=com_content&view=article&id=48&Itemid=194&lang=en
                                applicationProfile:  Web Browser
                                name:  Cyclone data from RSMC New Delhi (IMD)
                                description:  Data is provided in an Excel spreadsheet. Spreadsheet is converted to CSV file for ingest into the IBTrACS dataset.
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceStep:  ps001
            source:  (LE_Source)
                description:  La Reunion best track data. No public URL is available. Data are emailed to NCEI when requested.
                sourceCitation:  (CI_Citation)
                    title:  Cyclone data from Cyclone data from RSMC La Reunion (MeteoFrance)
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Cyclone data from RSMC La Reunion (MeteoFrance)
                        role:  (CI_RoleCode) originator
                sourceStep:  ps001
            source:  (LE_Source)
                description:  BoM best track data
                sourceCitation:  (CI_Citation)
                    title:  Bureau of Meteorology (Australia)
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Bureau of Meteorology (Australia)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.bom.gov.au/clim_data/IDCKMSTM0S.csv
                                applicationProfile:  Web Browser
                                name:  Bureau of Meteorology (Australia)
                                description:  The database at this URL is updated frequently and will often contain operational (i.e., not reanalyzed or best track-ed) data for recent storms.
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceStep:  ps001
            source:  (LE_Source)
                description:  RSMC Nadi Best Track data
                sourceCitation:  (CI_Citation)
                    title:  Cyclone data from Cyclone data from RSMC Nadi (Fiji). No publicly accessible URL. This data is emailed to NCEI (Howard Diamond or Ken Knapp) when requested.
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  RSMC Nadi (Fiji)
                        role:  (CI_RoleCode) originator
                sourceStep:  ps001
            source:  (LE_Source)
                description:  TCWC Wellington best track data. No publicly accessible URL. This data is emailed to NCEI (Howard Diamond or Ken Knapp) when requested.
                sourceCitation:  (CI_Citation)
                    title:  Cyclone data from TCWC Wellington (New Zealand)
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  TCWC Wellington (New Zealand)
                        role:  (CI_RoleCode) originator
                sourceStep:  ps001
            source:  (LE_Source)
                description:  This step uses reformatted best track data from the previous step (converting raw data to standardized Best Track data).
                sourceCitation:  (CI_Citation)
                    title:  Reformatted BestTrack data
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) processor
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        role: (missing)
                sourceStep:  ps002
            source:  (LE_Source)
                description:  This step is completed using data from the previous "merge" step along with the reformatted original BT data.
                sourceCitation:  (CI_Citation)
                    title:  Merged Best Track data
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        role: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        role: (missing)
                sourceStep:  ps003
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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:  Bulk metadata change applied on 2023-07-06. See version control repository history for metadata change details.