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NOAA Climate Data Record (CDR) of AVHRR Polar Pathfinder (APP) Cryosphere, Version 2


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                electronicMailAddress:  ncei.info@noaa.gov
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    dateStamp:  2023-08-10
    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:  NOAA Climate Data Record (CDR) of AVHRR Polar Pathfinder (APP) Cryosphere, Version 2
            alternateTitle:  AVHRR Polar Pathfinder
            date:  (CI_Date)
                date:  2019-05
                dateType:  (CI_DateTypeCode) publication
            edition:  Version 2.0
            identifier:  (MD_Identifier)
                code:
                  Anchor:  DOI doi:10.25921/X2X1-JR34
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                code:  NCEI DSI 3713_02
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                code:  gov.noaa.ncdc:C01579
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                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                role:  (CI_RoleCode) publisher
            citedResponsibleParty:  (CI_ResponsibleParty)
                individualName:  Key, Jeffery
                organisationName:  DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
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                        electronicMailAddress:  jeff.key@noaa.gov
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                individualName:  Key, Jeffery
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                        electronicMailAddress:  jeff.key@noaa.gov
                role:  (CI_RoleCode) author
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                individualName:  Lui, Yinghui
                organisationName:  UWI-MAD/SSEC/CIMSS > Cooperative Institute for Meteorological Satellite Studies, Space Science and Engineering Center, University of Wisconsin, Madison
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                individualName:  Lui, Yinghui
                organisationName:  UWI-MAD/SSEC/CIMSS > Cooperative Institute for Meteorological Satellite Studies, Space Science and Engineering Center, University of Wisconsin, Madison
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                individualName:  Wang, Xuanji
                organisationName:  UWI-MAD/SSEC/CIMSS > Cooperative Institute for Meteorological Satellite Studies, Space Science and Engineering Center, University of Wisconsin, Madison
                positionName:  Research Scientist
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                individualName:  Wang, Xuanji
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                organisationName:  NOAA CDR Program
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                        linkage: https://doi.org/10.25921/X2X1-JR34
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                        applicationProfile:  Description
                        name:  AVHRR Polar Pathfinder (APP) Cryosphere - NOAA Landing Page
                        description:  This dataset provides advanced scientific researchers a high quality Climate Data Record (CDR) intended for use in deriving higher-level geophysical parameters such as surface temperature and albedo, cloud properties, etc.
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                        linkage: https://www.ncei.noaa.gov/products/climate-data-records
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                        name:  Operational Climate Data Records in the NOAA CDR Program
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        abstract:  This NOAA Climate Data Record (CDR) contains the AVHRR Polar Pathfinder (APP) product. APP is a fundamental CDR comprised of calibrated and navigated AVHRR channel data (reflectances and brightness temperatures), viewing and illumination geometry (sensor scan angle, solar zenith angle, and sun-sensor relative azimuth angle), Universal Coordinated Time (UTC) of the data acquisition, and a surface type mask. The data are twice daily composites of up to 23 orbits on a 5 km Equal-Area Scalable Earth (EASE)-Grid twice daily over both poles, the Arctic and Antarctic, from 1982 to the present. The daily APP composites are centered on local solar times of 14:00 (high sun, but could be nighttime for some polar areas in winter) and 04:00 for the Arctic or 02:00 for the Antarctic. The APP covers the north polar region (Arctic) from 48.4 degrees northward, and the south polar region (Antarctic) from -53.2 degrees southward. The update to version 2 of the APP FCDR was updated calibration coefficients for AVHRR GAC visible channels over the entire period.
        purpose:  This dataset provides advanced scientific researchers a high quality Climate Data Record (CDR) intended for use in deriving higher-level geophysical parameters such as surface temperature and albedo, cloud properties, etc.
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                    electronicMailAddress:  app_contacts@noaa.gov
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        graphicOverview:  (MD_BrowseGraphic)
            fileName: https://www.ncei.noaa.gov/pub/data/metadata/images/C00940_browseimage.jpg
            fileDescription:  APP channel 1 reflectance
            fileType:  JPEG
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            keyword:  Earth Science > Spectral/Engineering > Infrared Wavelengths > Brightness Temperature
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                title:  Global Change Master Directory (GCMD) Science Keywords
                date:  (CI_Date)
                    date:  2018
                    dateType:  (CI_DateTypeCode) revision
                edition:  Version 8.6
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA)
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                        onlineResource:  (CI_OnlineResource)
                            linkage: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
                            protocol:  HTTPS
                            applicationProfile:  Web Browser
                            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) publisher
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Geographic Region > Arctic
            keyword:  Continent > Antarctica
            type:  (MD_KeywordTypeCode) place
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                title:  Global Change Master Directory (GCMD) Location Keywords
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                            linkage: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
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                            applicationProfile:  Web Browser
                            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.
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                    role:  (CI_RoleCode) publisher
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Vertical Location > Land Surface
            keyword:  Vertical Location > Sea Surface
            type:  (MD_KeywordTypeCode) stratum
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                title:  Global Change Master Directory (GCMD) Location Keywords
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                            linkage: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
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                            applicationProfile:  Web Browser
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                            function:  (CI_OnLineFunctionCode) information
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            keyword:  AVHRR > Advanced Very High Resolution Radiometer
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            keyword:  NOAA POES > NOAA Polar Orbiting Environmental Satellites
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                            name:  Global Change Master Directory (GCMD) Keywords
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                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) publisher
        descriptiveKeywords:  (MD_Keywords)
            keyword:  1 km - < 10 km or approximately .01 degree - < .09 degree
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                title:  Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
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                            linkage: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
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            keyword:  DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
            keyword:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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                title:  Global Change Master Directory (GCMD) Data Center Keywords
                date:  (CI_Date)
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                            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) publisher
        resourceConstraints:  (MD_Constraints)
            useLimitation:  For a complete description of use limitations for this CDR, see the Algorithm Theoretical Basis Document.
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Cite as: Key, Jeffrey; Liu, Yinghui; Wang, Xuanji; and NOAA CDR Program (2019):NOAA Climate Data Record (CDR) of AVHRR Polar Pathfinder (APP) Cryosphere, Version 2.0. NOAA National Centers for Environmental Information (NCEI). doi:10.25921/X2X1-JR34 [access date].
        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.
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                title:  AVHRR-based polar pathfinder products for modeling applications
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                title:  NOAA Climate Data Record (CDR) of AVHRR Polar Pathfinder Extended (APP-X) Climate Data Record (CDR)
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                            name:  NOAA Climate Data Record (CDR) of AVHRR Polar Pathfinder Extended (APP-X) Climate Data Record (CDR)
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                            name:  Deriving an inter-sensor consistent calibration for the AVHRR solar reflectance data record
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                title:  Calibrations for AVHRR channels 1 and 2: review and path towards consensus
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                    date:  2010
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                            linkage: https://doi.org/10.1080/01431161.2010.496473
                            protocol:  HTTPS
                            applicationProfile:  Web Browser
                            name:  Calibrations for AVHRR channels 1 and 2: review and path towards consensus
                            description:  International Journal of Remote Sensing landing page for given paper.
                            function:  (CI_OnLineFunctionCode) information
                    role: (missing)
            associationType:  (DS_AssociationTypeCode) crossReference
            initiativeType:  (DS_InitiativeTypeCode) sciencePaper
        spatialRepresentationType:  (MD_SpatialRepresentationTypeCode) grid
        spatialResolution:  (MD_Resolution)
            distance:
              Distance:  5000
        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) climatologyMeteorologyAtmosphere
        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:  1982-01-01
                    endPosition:
                    timeInterval:  12
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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
                version: (missing)
            distributorFormat:  (MD_Format)
                name:  netCDF-4
                version: (missing)
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://doi.org/10.25921/X2X1-JR34
                    protocol:  HTTPS
                    applicationProfile:  Landing Page
                    name:  NCEI Dataset Landing Page
                    description:  Landing page for the dataset.
                    function:  (CI_OnLineFunctionCode) information
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                transferSize: (missing)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/data/avhrr-polar-pathfinder/
                    protocol:  HTTPS
                    applicationProfile:  Download
                    name:  NOAA APP/APP-x CDR Direct Download
                    description:  Direct download of the CDR files.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                transferSize: (missing)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/thredds/catalog/avhrr-polar-pathfinder-files/catalog.html
                    protocol:  HTTPS
                    applicationProfile:  Download
                    name:  NCEI THREDDS Catalog
                    description:  Links to data set on THREDDS server for sub-setting and downloading data.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://registry.opendata.aws/noaa-cdr-fundamental/
                    protocol:  HTTPS
                    applicationProfile:  Information
                    name:  Registry of Open Data on AWS
                    description:  Information on AWS data access.
                    function:  (CI_OnLineFunctionCode) information
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                unitsOfDistribution:  Region: us-east-1
                onLine:  (CI_OnlineResource)
                    linkage: https://noaa-cdr-polar-pathfinder-fcdr-pds.s3.amazonaws.com/index.html
                    protocol:  HTTPS
                    applicationProfile:  Download
                    name:  AWS S3 Explorer (Region: us-east-1)
                    description:  Browse view to explore the S3 bucket.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                unitsOfDistribution:  Region: us-east
                onLine:  (CI_OnlineResource)
                    linkage: https://microsoft.github.io/AIforEarthDataSets/data/noaa-cdr.html
                    protocol:  HTTPS
                    applicationProfile:  Information
                    name:  Azure Landing Page (Region: us-east)
                    description:  Information on Microsoft Azure 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:  This Climate Data Record (CDR) were produced by NOAA Center for Satellite Applications and Research (STAR) and University of Wisconsin and are archived at the NOAA National Centers for Environmental Information (NCEI).
            processStep:  (LE_ProcessStep)
                description:  For a complete description of the processing steps, see the Algorithm Theoretical Basis Document and Data Flow Diagram.
                dateTime: (missing)
                processor:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    role:  (CI_RoleCode) processor
                source:  sd001
                processingInformation:  (LE_Processing)
                    identifier: (missing)
                    softwareReference:  (CI_Citation)
                        title:  Source Code Package for APP CDR
                        date:  (CI_Date)
                            date:  2015-10-26
                            dateType:  (CI_DateTypeCode) publication
                        edition:  Version 2.0
                        identifier:  (MD_Identifier)
                            code:  CDRP-DIA-0720
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            organisationName:  NOAA Climate Data Record Program Office
                            role:  (CI_RoleCode) publisher
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            organisationName: (missing)
                            contactInfo:  (CI_Contact)
                                onlineResource:  (CI_OnlineResource)
                                    linkage: https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs
                                    protocol:  HTTPS
                                    applicationProfile:  Web Browser
                                    name:  Source Code Package for APP CDR
                                    description:  The Source Code Package for the APP CDR. This source code is for reference only. The source code is provided to maintain transparency of the algorithm and processes used in creating the Climate Data Record. The source code is not intended to be portable to any computer system(s) beyond that of the original CDR producer's environment.
                                    function:  (CI_OnLineFunctionCode) information
                            role: (missing)
                    documentation:  (CI_Citation)
                        title:  Data Flow Diagram for APP CDR
                        date:  (CI_Date)
                            date:  2015-10-26
                            dateType:  (CI_DateTypeCode) publication
                        edition:  Version 2.0
                        identifier:  (MD_Identifier)
                            code:  CDRP-DIA-0720
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            organisationName:  NOAA Climate Data Record Program Office
                            role:  (CI_RoleCode) publisher
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            organisationName: (missing)
                            contactInfo:  (CI_Contact)
                                onlineResource:  (CI_OnlineResource)
                                    linkage: https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs
                                    protocol:  HTTPS
                                    applicationProfile:  Web Browser
                                    name:  Data Flow Diagram for APP CDR
                                    description:  The Data Flow Diagram for APP CDR shows an overview of the steps used to produce the dataset.
                                    function:  (CI_OnLineFunctionCode) information
                            role: (missing)
                    algorithm:  (LE_Algorithm)
                        citation:  (CI_Citation)
                            title:  Climate Algorithm Theoretical Basis Document (C-ATBD) for APP CDR
                            date:  (CI_Date)
                                date:  2015-10-26
                                dateType:  (CI_DateTypeCode) publication
                            edition:  Version 2.0
                            identifier:  (MD_Identifier)
                                code:  CDRP-ATBD-0572
                            citedResponsibleParty:  (CI_ResponsibleParty)
                                organisationName:  NOAA Climate Data Record Program Office
                                role:  (CI_RoleCode) publisher
                            citedResponsibleParty:  (CI_ResponsibleParty)
                                organisationName: (missing)
                                contactInfo:  (CI_Contact)
                                    onlineResource:  (CI_OnlineResource)
                                        linkage: https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs
                                        protocol:  HTTPS
                                        applicationProfile:  Web Browser
                                        name:  Climate Algorithm Theoretical Basis Document (C-ATBD) for APP CDR
                                        description:  The ATBD for the APP CDR.
                                        function:  (CI_OnLineFunctionCode) information
                                role: (missing)
                        description:  See Algorithm Citation
            source:  (LE_Source)
                description:  Level 1b AVHRR Global Area Coverage from CLASS
                sourceCitation:  (CI_Citation)
                    title:  Level 1b AVHRR Global Area Coverage
                    date: (missing)
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Comprehensive Large Array-data Stewardship System (CLASS)
                        role:  (CI_RoleCode) publisher
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://www.bou.class.noaa.gov/saa/products/search?datatype_family=AVHRR
                                protocol:  HTTPS
                                applicationProfile:  Web Browser
                                name:  Level 1b AVHRR Global Area Coverage
                                description:  Landing page for dataset, where the DOI points to.
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceExtent:  (EX_Extent)
                    geographicElement:  (EX_GeographicBoundingBox)
                        extentTypeCode:  1
                        westBoundLongitude:  0
                        eastBoundLongitude:  180
                        southBoundLatitude:  -90
                        northBoundLatitude:  90
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1982
                            endPosition:
                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 2023-07-06. See version control repository history for metadata change details.