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African Easterly Wave Climatology, Version 1


 (MI_Metadata)
    fileIdentifier:  gov.noaa.ncdc:C00784
    language:  eng; USA
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                description:  Information for contacts at NCEI.
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    dateStamp:  2023-06-23
    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:  African Easterly Wave Climatology, Version 1
            alternateTitle:  AEWC
            date:  (CI_Date)
                date:  2014-09-17
                dateType:  (CI_DateTypeCode) publication
            edition:  1.0
            identifier:  (MD_Identifier)
                code:
                  Anchor:  DOI doi:10.7289/V5ZC80SX
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                code:  NCEI DSI 6193_01
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                code:  gov.noaa.ncdc:C00784
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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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                organisationName:  DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
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                        facsimile:  1-828-271-4876
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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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                organisationName:  GIT/EAS > School of Earth and Atmospheric Sciences, Georgia Institute of Technology
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                organisationName:  GIT/EAS > School of Earth and Atmospheric Sciences, Georgia Institute of Technology
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                individualName:  Belanger, James I.
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                individualName:  Belanger, James I.
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                individualName:  Jelinek, Mark T.
                organisationName:  GIT/EAS > School of Earth and Atmospheric Sciences, Georgia Institute of Technology
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                individualName:  Jelinek, Mark T.
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                individualName:  Curry, Judith A.
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                individualName:  Curry, Judith A.
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        abstract:  The AEWC dataset was created using a new algorithm developed by researchers at Georgia Tech and represents the first attempt to produce a standard easterly wave tracking dataset for the East Pacific, Atlantic, and Africa. The algorithm uses curvature vorticity anomalies to identify the location of easterly waves as a function of time. The dataset provides 6-hourly coverage over a 63-year period (January 1948-December 2010) in the region bounded by 35S-35N x 140W-40E. Data files are derived using four separate atmospheric reanalysis products including: 1) the ERA-40 dataset (covers the period January 1958 to December 2001); 2) the ERA-Interim dataset (covers the period January 1979 to December 2010); the CFS-R dataset (covers the period January 1979 to December 2010); and the NCEP/NCAR I dataset (covers the period January 1948 to December 2010). Other data sources used in the production of the AEWC are the Remote Sensing Systems SSM/I Total Precipitable Water, Rain Rate, and Cloud Liquid Water content products, Claus Brightness Temperature, and Outgoing Longwave Radiation from the NCDC Daily OLR CDR. Each netCDF file contains all the easterly waves that originate in a given year, the isobaric level for easterly wave tracking (600hPa, 700hPa, and 850hPa) and the zone from which the easterly wave began its development. Zones include: Africa (AFR), Central America (CAM), North Atlantic (NAL), Northeast Pacific (NEP), South Atlantic (SAL), South America (SAM), Southeast Pacific (SEP), and Other (OTH). For each easterly wave, the following variables are provided including: wave observation count, wave trajectory id, wave time, wave trough centroid latitude, wave trough centroid longitude, wave trough maximum latitude, mean longitude of wave trough maximum latitude, wave trough minimum latitude, mean longitude of wave trough minimum latitude, wavelength, mean wave trough relative vorticity, maximum wave trough relative vorticity, minimum wave trough relative vorticity, standard deviation wave trough relative vorticity,mean wave trough curvature vorticity, maximum wave trough curvature vorticity, minimum wave trough curvature vorticity, standard deviation wave trough curvature vorticity, mean wave trough shear vorticity, maximum wave trough shear vorticity, minimum wave trough shear vorticity, standard deviation wave trough shear vorticity, mean wave trough Claus brightness temperature, standard deviation wave trough Claus brightness temperature, wave trough Claus brightness temperature area fraction, mean wave trough total precipitable water, standard deviation wave trough total precipitable water, wave trough total precipitable water area fraction, mean wave trough rain rate, standard deviation wave trough rain rate, wave trough rain rate area fraction, mean wave trough cloud liquid water, standard deviation wave trough cloud liquid water, wave trough cloud liquid water area fraction, mean wave trough outgoing longwave radiation, standard deviation wave trough outgoing longwave radiation, wave trough outgoing longwave radiation area fraction, mean wave trough outgoing longwave radiation anomaly, standard deviation wave trough outgoing longwave radiation anomaly.
        purpose:  The data will primarily be utilized by atmospheric scientists specializing in tropical meteorology. This may include studies of easterly wave genesis, intensification, and decay as well as the relationship between tropical cyclones and easterly waves.
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            organisationName:  The Weather Company, an IBM business
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            individualName:  Hilawe Semunegus
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            fileName: https://www.ncei.noaa.gov/pub/data/metadata/images/C00784_aewc_graphic.png
            fileDescription:  Easterly wave track density per year for the ERA-Interim reanalysis during the period June to November 1995-2010.
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            keyword:  100 km - < 250 km or approximately 1 degree - < 2.5 degrees
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            otherConstraints:  Cite as: Belanger, James I., Jelinek, Mark T., Curry, Judith A. (2014): "African Easterly Wave Climatology, Version 1." NOAA National Centers for Environmental Information. [indicate subset used]. https://doi.org/10.7289/V5ZC80SX [access date].
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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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                title:  A climatology of easterly waves in the tropical Western Hemisphere
                date: (missing)
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                            linkage: https://doi.org/10.1002/gdj3.40
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                            name:  Belanger, J. I., Jelinek, M. T. and Curry, J. A. (2017), A climatology of easterly waves in the tropical Western Hemisphere. Geosci. Data J.. doi:10.1002/gdj3.40
                            description:  Science paper associated with the dataset.
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            distance:
              Distance:  222000
        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) climatologyMeteorologyAtmosphere
        environmentDescription:  Data are processed using MATLAB R2012a 64-bit with access to NetCDF 4.1.3.
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                extentTypeCode:  1
                westBoundLongitude:  -140.0
                eastBoundLongitude:  40.0
                southBoundLatitude:  -35.0
                northBoundLatitude:  35.0
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    description:  ground condition
                    beginPosition:  1948
                    endPosition:  2010
                    timeInterval:  6
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                        linkage: https://www.ncei.noaa.gov/contact
                        name:  NCEI Contact Information
                        description:  Information for contacts at NCEI.
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                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:  XML
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            distributorFormat:  (MD_Format)
                name:  netCDF-4
                version: (missing)
                fileDecompressionTechnique:  ZLIB compression
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://doi.org/10.7289/V5ZC80SX
                    protocol:  HTTPS
                    applicationProfile:  Landing Page
                    name:  NCEI Dataset Landing Page
                    description:  Landing page for the dataset.
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            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/data/african-easterly-wave-climatology/
                    protocol:  HTTPS
                    applicationProfile:  Download
                    name:  NCEI Direct Download (Dataset Files)
                    description:  Direct download for the dataset.
                    function:  (CI_OnLineFunctionCode) download
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
            extent:  #boundingExtent
        lineage:  (LI_Lineage)
            statement:  For more information about data creation, please review the associated documentation.
            processStep:  (LE_ProcessStep)
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                dateTime: (missing)
                processor:  (CI_ResponsibleParty)
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                    role:  (CI_RoleCode) processor
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                source:  sd003
                source:  sd004
                source:  sd005
                source:  sd006
                source:  sd007
                processingInformation:  (LE_Processing)
                    identifier: (missing)
                    documentation:  (CI_Citation)
                        title:  AEWC Documentation
                        date:  (CI_Date)
                            date:  2014-09-09
                            dateType:  (CI_DateTypeCode) publication
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            organisationName:  DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
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                            organisationName: (missing)
                            contactInfo:  (CI_Contact)
                                onlineResource:  (CI_OnlineResource)
                                    linkage: https://www.ncei.noaa.gov/data/african-easterly-wave-climatology/doc/aewc_v1.0_doc_c20140904.pdf
                                    applicationProfile:  Web Browser
                                    name:  AEWC Documentation
                                    description:  More information about the AEWC dataset is available in the dataset documentation. Code documentation is also available for a more detailed description of processing steps. (See code tar file for more information)
                                    function:  (CI_OnLineFunctionCode) information
                            role: (missing)
            source:  (LE_Source)
                description:  Satellite data used in the production of the dataset
                sourceCitation:  (CI_Citation)
                    title:  NOAA Climate Data Record (CDR) of Daily Outgoing Longwave Radiation (OLR), Version 1.2
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) custodian
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                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ncdc:C00875/html
                                protocol:  HTTPS
                                applicationProfile:  Web Browser
                                name:  NOAA Climate Data Record (CDR) of Daily Outgoing Longwave Radiation (OLR), Version 1.2
                                description:  More information about the source dataset is available through the link
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
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                            beginPosition:  1979-01
                            endPosition:  2010-12
                sourceStep:  ps001
            source:  (LE_Source)
                description:  Reanalyses data used in the production of the dataset
                sourceCitation:  (CI_Citation)
                    title:  NCEP/NCAR Reanalysis Data 1
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/ESRL > Earth System Research Laboratory, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) distributor
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html
                                applicationProfile:  Web Browser
                                name:  NCEP/NCAR Reanalysis Data 1
                                description:  More information about the source dataset is available through the link
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1948-01
                            endPosition:  2010-12
                sourceStep:  ps001
            source:  (LE_Source)
                description:  Reanalyses data used in the production of the dataset
                sourceCitation:  (CI_Citation)
                    title:  Climate Forecast System Reanalysis (CFSR), for 1979 to 2011
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) custodian
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ncdc:C00765/html
                                protocol:  HTTPS
                                applicationProfile:  Web Browser
                                name:  Climate Forecast System Reanalysis (CFSR), for 1979 to 2011
                                description:  More information about the source dataset is available through the link
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1979-01
                            endPosition:  2010-12
                sourceStep:  ps001
            source:  (LE_Source)
                description:  Reanalyses data used in the production of the dataset
                sourceCitation:  (CI_Citation)
                    title:  ERA-Interim
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  UCAR/NCAR/CISL/RDA > Research Data Archive, Computational and Information Systems Laboratory, National Center for Atmospheric Research, University Corporation for Atmospheric Research
                        role:  (CI_RoleCode) distributor
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://rda.ucar.edu/datasets/ds627.0/
                                applicationProfile:  Web Browser
                                name:  ERA-Interim
                                description:  More information about the source dataset is available through the link
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1979-01
                            endPosition:  2010-12
                sourceStep:  ps001
            source:  (LE_Source)
                description:  Reanalyses data used in the production of the dataset
                sourceCitation:  (CI_Citation)
                    title:  ERA-40
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  ECMWF > European Centre for Medium-Range Weather Forecasts
                        role:  (CI_RoleCode) distributor
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://apps.ecmwf.int/datasets/data/era40_daily/
                                applicationProfile:  Web Browser
                                name:  ERA-40
                                description:  More information about the source dataset is available through the link
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1958-01
                            endPosition:  2001-12
                sourceStep:  ps001
            source:  (LE_Source)
                description:  Satellite data used in the production of the dataset
                sourceCitation:  (CI_Citation)
                    title:  Claus Brightness Temperature
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  GB/NCAS/BADC > British Atmospheric Data Centre, NERC Centres for Atmospheric Science, United Kingdom
                        role:  (CI_RoleCode) distributor
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://badc.nerc.ac.uk/data/claus/claus.html
                                protocol:  HTTPS
                                applicationProfile:  Web Browser
                                name:  Claus Brightness Temperature
                                description:  More information about the source dataset is available through the link
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1983-07
                            endPosition:  2006-06
                sourceStep:  ps001
            source:  (LE_Source)
                description:  Satellite data used in the production of the dataset
                sourceCitation:  (CI_Citation)
                    title:  Remote Sensing Systems SSM/I
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  RSS > Remote Sensing Systems
                        role:  (CI_RoleCode) distributor
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.remss.com/missions/ssmi
                                applicationProfile:  Web Browser
                                name:  Remote Sensing Systems SSM/I
                                description:  More information about the source dataset is available through the link
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1987-07
                            endPosition:  2010-12
                sourceStep:  ps001
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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 2023-06-23. See version control repository history for metadata change details.