Skip to main content

NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 2 Cloud Top Height (ACHA)


 (MI_Metadata)
    fileIdentifier:  gov.noaa.ncdc:C01505
    language:  eng; USA
    characterSet:  (MD_CharacterSetCode) utf8
    hierarchyLevel:  (MD_ScopeCode) dataset
    contact:  (CI_ResponsibleParty)
        organisationName:  NOAA National Centers for Environmental Information
        contactInfo:  (CI_Contact)
            address:  (CI_Address)
                electronicMailAddress:  ncei.info@noaa.gov
            onlineResource:  (CI_OnlineResource)
                linkage: https://www.ncei.noaa.gov/contact
                name:  NCEI Contact Information
                description:  Information for contacts at NCEI.
                function:  (CI_OnLineFunctionCode) information
        role:  (CI_RoleCode) pointOfContact
    dateStamp:  2023-09-18
    metadataStandardName:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
    metadataStandardVersion:  ISO 19115-2:2009(E)
return to top
    referenceSystemInfo:  (MD_ReferenceSystem)
        referenceSystemIdentifier:  (RS_Identifier)
            authority:  (CI_Citation)
                title:  EPSG Geodetic Parameter Dataset Registry
                date:  (CI_Date)
                    date:  2008-11-12
                    dateType:  (CI_DateTypeCode) publication
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  International Association of Oil and Gas Producers (OGP) Geomatics Committee
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://www.epsg-registry.org/
                            applicationProfile:  Data Search Application
                            name:  EPSG Geodetic Parameter Dataset Registry Application
                            description:  Interface to the EPSG Geodetic Parameter Dataset Registry
                            function:  (CI_OnLineFunctionCode) search
                    role:  (CI_RoleCode) custodian
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  International Association of Oil and Gas Producers (OGP) Geomatics Committee
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4326
                            applicationProfile:  Download
                            name:  Coordinate Reference System data in GML
                            description:  Coordinate Reference System data in GML
                            function:  (CI_OnLineFunctionCode) download
                    role:  (CI_RoleCode) custodian
            code:  urn:ogc:def:crs:EPSG::4326
            version: (unknown)
return to top
    identificationInfo:  (MD_DataIdentification)
        citation:  (CI_Citation)
            title:  NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 2 Cloud Top Height (ACHA)
            alternateTitle:  ABI-L2-ACHA
            alternateTitle:  ABI-L2-ACHA2KM
            date:  (CI_Date)
                date:  2018-02-16
                dateType:  (CI_DateTypeCode) publication
            edition:  Provisional
            identifier:  (MD_Identifier)
                code:
                  Anchor:  DOI doi:10.7289/V5HX19ZQ
            identifier:  (MD_Identifier)
                code:  ABI-L2-ACHA
            identifier:  (MD_Identifier)
                code:  ABI-L2-ACHA2KM
            identifier:  (MD_Identifier)
                code:  gov.noaa.ncdc:C01505
            identifier:  (MD_Identifier)
                code:  gov.noaa.class:GRABIPRD
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  NOAA National Centers for Environmental Information
                role:  (CI_RoleCode) publisher
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  GOES-R Algorithm Working Group
                role:  (CI_RoleCode) principalInvestigator
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  GOES-R Algorithm Working Group
                role:  (CI_RoleCode) author
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  GOES-R Series Program
                role:  (CI_RoleCode) resourceProvider
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  GOES-R Series Program
                role:  (CI_RoleCode) author
            presentationForm:  (CI_PresentationFormCode) imageDigital
        abstract:  The Cloud Top Height product contains an image with pixel values identifying the geopotential height at the top of a cloud layer. The product is generated in combination with the Cloud Top Temperature and Cloud Top Pressure products by the same algorithm. The product includes data quality information that provides an assessment of the cloud top height data values for on-earth pixels. The units of measure for the cloud top height value is meters. The Cloud Top Pressure product image is produced on the Advanced Baseline Imager (ABI) fixed grid (at 10 km for Full Disk and CONUS coverage regions and at 4km for Mesoscale) under the following conditions: Cloudy; Geolocated source data to local zenith angles of 70 degrees for both daytime and nighttime conditions. The product's spatial resolution increased from 10 and 4 km to 2 km on 24 March 2023.
        purpose:  These cloud products are a prerequisite for generating other downstream products that include the Cloud Layer product, Cloud Optical/Microphysical products, and the Derived Motion Wind products. Forecasters will be able to use this information to determine areas of cloud growth and likelihood of precipitation. Other operational applications of this product include its use in Aviation Terminal Aerodrome Forecasts (TAFs), supplementing upper-level cloud information to the ground-based Automated Surface Observing System (ASOS), and initialization of clouds in numerical weather prediction models.
        status:  (MD_ProgressCode) onGoing
        pointOfContact:  (CI_ResponsibleParty)
            individualName:  Customer Engagement Branch
            organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
            contactInfo:  (CI_Contact)
                address:  (CI_Address)
                    electronicMailAddress:  ncei.sat.info@noaa.gov
            role:  (CI_RoleCode) pointOfContact
        resourceMaintenance:  (MD_MaintenanceInformation)
            maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) continual
        graphicOverview:  (MD_BrowseGraphic)
            fileName: https://www.ncei.noaa.gov/pub/data/metadata/images/C01505.jpg
            fileDescription:  Example of the Cloud Height product as generated by the GOES-R Cloud Height algorithm.
            fileType:  JPEG
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Top Height
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                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)
                    contactInfo:  (CI_Contact)
                        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:  Atmospheric - Upper-air - Cloud Properties
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  Global Climate Observing System (GCOS) Essential Climate Variables (ECVs)
                date:  (CI_Date)
                    date:  2017
                    dateType:  (CI_DateTypeCode) publication
                edition:  Release 2017
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  World Meteorological Organization, United Nations
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://public.wmo.int/en/programmes/global-climate-observing-system/essential-climate-variables
                            protocol:  HTTP
                            applicationProfile:  Information
                            name:  GCOS Essential Climate Variables
                            description:  Overview of the GCOS Essential Climate Variables.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) custodian
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Geographic Region > Equatorial
            keyword:  Geographic Region > Mid-Latitude
            keyword:  Geographic Region > Northern Hemisphere
            keyword:  Geographic Region > Southern Hemisphere
            keyword:  Geographic Region > Tropics
            keyword:  Geographic Region > Western Hemisphere
            keyword:  Continent > North America > United States Of America
            keyword:  Continent > North America > Central America
            keyword:  Continent > South America
            keyword:  Ocean > Atlantic Ocean
            keyword:  Ocean > Pacific Ocean
            type:  (MD_KeywordTypeCode) place
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Location 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)
                    contactInfo:  (CI_Contact)
                        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:  Vertical Location > Troposphere
            type:  (MD_KeywordTypeCode) stratum
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Location 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)
                    contactInfo:  (CI_Contact)
                        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:  GOES > Geostationary Operational Environmental Satellites
            type:  (MD_KeywordTypeCode) project
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Project 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)
                    contactInfo:  (CI_Contact)
                        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:  ABI > Advanced Baseline Imager
            type:  (MD_KeywordTypeCode) instrument
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Instrument 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)
                    contactInfo:  (CI_Contact)
                        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:  GOES-16 > Geostationary Operational Environmental Satellite 16
            keyword:  GOES-17 > Geostationary Operational Environmental Satellite 17
            keyword:  GOES-18 > Geostationary Operational Environmental Satellite 18
            type:  (MD_KeywordTypeCode) platform
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Platform 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)
                    contactInfo:  (CI_Contact)
                        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:  10 km - < 50 km or approximately .09 degree - < .5 degree
            type:  (MD_KeywordTypeCode) dataResolution
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Horizontal Data Resolution 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)
                    contactInfo:  (CI_Contact)
                        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:  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
            keyword:  DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
            keyword:  DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
            type:  (MD_KeywordTypeCode) dataCentre
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Data Center Keywords
                date:  (CI_Date)
                    date:  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)
                    contactInfo:  (CI_Contact)
                        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:  ABI-L2-ACHA
            keyword:  ABI-L2-ACHA2KM
            keyword:  gov.noaa.class:GRABIPRD
            keyword:  GRABIPRD
            type:  (MD_KeywordTypeCode) project
        resourceConstraints:  (MD_Constraints)
            useLimitation:  For a complete list of limitations of this dataset, see the Algorithm Theoretical Basis Document (ATBD).
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Cite as: GOES-R Algorithm Working Group, and GOES-R Series Program Office (2018): NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 2 Cloud Top Height (ACHA). [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V5HX19ZQ. [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.
        aggregationInfo:  (MD_AggregateInformation)
            aggregateDataSetName:  (CI_Citation)
                title:  GOES-R Program Document Library
                date: (missing)
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://www.goes-r.gov/resources/docs.html
                            applicationProfile:  Web Browser
                            name:  GOES-R Program Document Library
                            description:  Webpage with product algorithm, users guides, and education and outreach materials.
                            function:  (CI_OnLineFunctionCode) information
                    role: (missing)
            associationType:  (DS_AssociationTypeCode) crossReference
            initiativeType:  (DS_InitiativeTypeCode) userGuide
        aggregationInfo:  (MD_AggregateInformation)
            aggregateDataSetName:  (CI_Citation)
                title:  GOES Operational Status - NOAA Office of Satellite and Product Operations
                date: (missing)
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://www.ospo.noaa.gov/Operations/GOES/status.html
                            applicationProfile:  Web Browser
                            name:  GOES Operational Status - NOAA Office of Satellite and Product Operations
                            description:  GOES spacecraft status page.
                            function:  (CI_OnLineFunctionCode) information
                    role: (missing)
            associationType:  (DS_AssociationTypeCode) crossReference
            initiativeType:  (DS_InitiativeTypeCode) userGuide
        spatialRepresentationType:  (MD_SpatialRepresentationTypeCode) grid
        spatialResolution:  (MD_Resolution)
            distance:
              Distance:  10000
        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) climatologyMeteorologyAtmosphere
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                extentTypeCode:  1
                westBoundLongitude:  -156.2995
                eastBoundLongitude:  6.2995
                southBoundLatitude:  -81.3282
                northBoundLatitude:  81.3282
            geographicElement:  (EX_GeographicBoundingBox)
                extentTypeCode:  1
                westBoundLongitude:  141.7005
                eastBoundLongitude:  -55.7005
                southBoundLatitude:  -81.3282
                northBoundLatitude:  81.3282
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    description:  ground condition
                    beginPosition:  2017-05-16
                    endPosition:
                    timeInterval:  10
return to top
    contentInfo:  (MI_CoverageDescription)
        attributeDescription:
          RecordType:  OR_ABI-L2-ACHAC-Mode_G16_sYYYYDDDHHMMSS_eYYYYDDDHHMMSS_cYYYYDDDHHMMSS.nc
        contentType:  (MD_CoverageContentTypeCode) physicalMeasurement
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  HT
                attributeType:
                  TypeName:
                    aName:  short
            descriptor:  ABI L2+ Cloud Top Height (geopotential_height_at_cloud_top)
            units:  http://example.org/someUnitsDictionary.xml#m
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  DQF
                attributeType:
                  TypeName:
                    aName:  byte
            descriptor:  ABI L2+ Cloud Top Height data quality flags (status_flag)
            units:  http://example.org/someUnitsDictionary.xml#1
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  t
                attributeType:
                  TypeName:
                    aName:  double
            descriptor:  time variable (t) is the mid-point between the start and end image scan in seconds since epoch (2000-01-01 12:00:00) (time)
            units:  http://example.org/someUnitsDictionary.xml#seconds%20since%202000-01-01%2012%3A00%3A00
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  y
                attributeType:
                  TypeName:
                    aName:  short
            descriptor:  GOES Projection y-Coordinate (projection_y_coordinate)
            units:  http://example.org/someUnitsDictionary.xml#rad
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  x
                attributeType:
                  TypeName:
                    aName:  short
            descriptor:  GOES Projection x-Coordinate (projection_x_coordinate)
            units:  http://example.org/someUnitsDictionary.xml#rad
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  time_bounds
                attributeType:
                  TypeName:
                    aName:  double
            descriptor:  Scan start and end times in seconds since epoch (2000-01-01 12:00:00)
            units:  http://example.org/someUnitsDictionary.xml#seconds%20since%202000-01-01%2012%3A00%3A00
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  goes_imager_projection
                attributeType:
                  TypeName:
                    aName:  int
            descriptor:  GOES-R ABI fixed grid projection
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  y_image
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  GOES-R fixed grid projection y-coordinate center of image (projection_y_coordinate)
            units:  http://example.org/someUnitsDictionary.xml#rad
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  y_image_bounds
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  GOES-R fixed grid projection y-coordinate north/south extent of image
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  x_image
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  GOES-R fixed grid projection x-coordinate center of image (projection_x_coordinate)
            units:  http://example.org/someUnitsDictionary.xml#rad
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  x_image_bounds
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  GOES-R fixed grid projection x-coordinate west/east extent of image
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  nominal_satellite_subpoint_lat
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  nominal satellite subpoint latitude (platform latitude) (latitude)
            units:  http://example.org/someUnitsDictionary.xml#degrees_north
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  nominal_satellite_subpoint_lon
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  nominal satellite subpoint longitude (platform longitude) (longitude)
            units:  http://example.org/someUnitsDictionary.xml#degrees_east
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  nominal_satellite_height
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  nominal satellite height above GRS 80 ellipsoid (platform altitude) (height_above_reference_ellipsoid)
            units:  http://example.org/someUnitsDictionary.xml#km
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  geospatial_lat_lon_extent
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  geospatial latitude and longitude references
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  outlier_pixels
                attributeType:
                  TypeName:
                    aName:  int
            descriptor:  number of cloud top height pixels whose value is outside valid measurement range
            units:  http://example.org/someUnitsDictionary.xml#count
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  minimum_cloud_top_height
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  minimum cloud top height (geopotential_height_at_cloud_top)
            units:  http://example.org/someUnitsDictionary.xml#m
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  maximum_cloud_top_height
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  maximum cloud top height (geopotential_height_at_cloud_top)
            units:  http://example.org/someUnitsDictionary.xml#m
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  mean_cloud_top_height
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  mean cloud top height (geopotential_height_at_cloud_top)
            units:  http://example.org/someUnitsDictionary.xml#m
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  std_dev_cloud_top_height
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  standard deviation of cloud top height values (geopotential_height_at_cloud_top)
            units:  http://example.org/someUnitsDictionary.xml#m
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  algorithm_dynamic_input_data_container
                attributeType:
                  TypeName:
                    aName:  int
            descriptor:  container for filenames of dynamic algorithm input data
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  processing_parm_version_container
                attributeType:
                  TypeName:
                    aName:  int
            descriptor:  container for processing parameter filenames
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  algorithm_product_version_container
                attributeType:
                  TypeName:
                    aName:  int
            descriptor:  container for algorithm package filename and product version
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  local_zenith_angle
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  threshold angle between the line of sight to the satellite and the local zenith at the observation target for good quality cloud top temperature, pressure and height data production (platform_zenith_angle)
            units:  http://example.org/someUnitsDictionary.xml#degree
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  local_zenith_angle_bounds
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  local zenith angle degree range where good quality cloud top temperature, pressure and height data is produced
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  solar_zenith_angle
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  threshold angle between the line of sight to the sun and the local zenith at the observation target for good quality cloud top temperature, pressure and height data production (solar_zenith_angle)
            units:  http://example.org/someUnitsDictionary.xml#degree
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  solar_zenith_angle_bounds
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  solar zenith angle degree range where good quality cloud top temperature, pressure and height data is produced
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  percent_uncorrectable_GRB_errors
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  percent data lost due to uncorrectable GRB errors
            units:  http://example.org/someUnitsDictionary.xml#percent
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  percent_uncorrectable_L0_errors
                attributeType:
                  TypeName:
                    aName:  float
            descriptor:  percent data lost due to uncorrectable L0 errors
            units:  http://example.org/someUnitsDictionary.xml#percent
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  cloud_pixels
                attributeType:
                  TypeName:
                    aName:  int
            descriptor:  number of cloudy or probably cloudy pixels
            units:  http://example.org/someUnitsDictionary.xml#count
return to top
    distributionInfo:  (MD_Distribution)
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  NOAA National Centers for Environmental Information
                contactInfo:  (CI_Contact)
                    address:  (CI_Address)
                        electronicMailAddress:  ncei.info@noaa.gov
                    onlineResource:  (CI_OnlineResource)
                        linkage: https://www.ncei.noaa.gov/contact
                        name:  NCEI Contact Information
                        description:  Information for contacts at NCEI.
                        function:  (CI_OnLineFunctionCode) information
                role:  (CI_RoleCode) distributor
            distributionOrderProcess:  (MD_StandardOrderProcess)
                fees:  In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
                orderingInstructions:  Contact NCEI for other distribution options and instructions.
            distributorFormat:  (MD_Format)
                name:  NetCDF
                version:  4
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://doi.org/10.7289/V5HX19ZQ
                    protocol:  HTTPS
                    applicationProfile:  Landing Page
                    name:  NCEI Dataset Landing Page
                    description:  Landing page for the dataset.
                    function:  (CI_OnLineFunctionCode) information
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncdc.noaa.gov/airs-web/search
                    protocol:  HTTPS
                    applicationProfile:  Data Search Application
                    name:  NCEI Archive Information Request System
                    description:  Search the data archive and submit an order for the dataset via the interface.
                    function:  (CI_OnLineFunctionCode) order
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: http://www.class.noaa.gov/saa/products/search?datatype_family=GRABIPRD
                    protocol:  HTTPS
                    applicationProfile:  Data Search Application
                    name:  NOAA CLASS Data Search and Order
                    description:  Search the data archive and submit an order for the dataset via the interface.
                    function:  (CI_OnLineFunctionCode) order
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/products/goes-terrestrial-weather-abi-glm
                    protocol:  HTTPS
                    applicationProfile:  Information
                    name:  NCEI GOES-R Terrestrial Weather (ABI/GLM)
                    description:  Description of the products and related resources.
                    function:  (CI_OnLineFunctionCode) information
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.goes-r.gov/users/docs/PUG-main-vol1.pdf
                    protocol:  HTTPS
                    applicationProfile:  Documentation
                    name:  Product Definition and Users' Guide (PUG) Vol.1 Main
                    description:  The Product Definition and User's Guide (PUG) document provides product descriptions and formats for all data and products produced and made available to users by the Geostationary Operational Environmental Satellite R Series (GOES-R) Core Ground Segment (GS).
                    function:  (CI_OnLineFunctionCode) information
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.goes-r.gov/products/docs/PUG-L2+-vol5.pdf
                    protocol:  HTTPS
                    applicationProfile:  Documentation
                    name:  Product Definition and Users' Guide (PUG) Vol.5 Level 2+ Products
                    description:  The Product Definition and User's Guide (PUG) document provides product descriptions and formats for all data and products produced and made available to users by the Geostationary Operational Environmental Satellite R Series (GOES-R) Core Ground Segment (GS).
                    function:  (CI_OnLineFunctionCode) information
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://registry.opendata.aws/noaa-goes/
                    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-goes16.s3.amazonaws.com/index.html
                    protocol:  HTTPS
                    applicationProfile:  Download
                    name:  GOES-16 AWS S3 Explorer (Region: us-east-1)
                    description:  Browse view to explore the S3 bucket for GOES-16 datasets. Data relevant to this can be found in folders with the prefix ABI-L2-ACHA.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                unitsOfDistribution:  Region: us-east-1
                onLine:  (CI_OnlineResource)
                    linkage: https://noaa-goes17.s3.amazonaws.com/index.html
                    protocol:  HTTPS
                    applicationProfile:  Download
                    name:  GOES-17 AWS S3 Explorer (Region: us-east-1)
                    description:  Browse view to explore the S3 bucket for GOES-17 datasets. Data relevant to this can be found in folders with the prefix ABI-L2-ACHA.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                unitsOfDistribution:  Region: us-east-1
                onLine:  (CI_OnlineResource)
                    linkage: https://noaa-goes18.s3.amazonaws.com/index.html
                    protocol:  HTTPS
                    applicationProfile:  Download
                    name:  GOES-18 AWS S3 Explorer (Region: us-east-1)
                    description:  Browse view to explore the S3 bucket for GOES-18 datasets. Data relevant to this can be found in folders with the prefix ABI-L2-ACHA.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                unitsOfDistribution:  Region: US-multiple
                onLine:  (CI_OnlineResource)
                    linkage: https://console.cloud.google.com/storage/browser/gcp-public-data-goes-16
                    protocol:  HTTPS
                    applicationProfile:  Download
                    name:  GOES-16 Google Cloud Bucket Explorer (Region: US-multiple)
                    description:  Browse view to explore the Google Cloud bucket for GOES-16. Data relevant to this can be found in folders with the prefix ABI-L2-ACHA.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                unitsOfDistribution:  Region: US-multiple
                onLine:  (CI_OnlineResource)
                    linkage: https://console.cloud.google.com/storage/browser/gcp-public-data-goes-17
                    protocol:  HTTPS
                    applicationProfile:  Download
                    name:  GOES-17 Google Cloud Bucket Explorer (Region: US-multiple)
                    description:  Browse view to explore the Google Cloud bucket for GOES-17. Data relevant to this can be found in folders with the prefix ABI-L2-ACHA.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                unitsOfDistribution:  Region: US-multiple
                onLine:  (CI_OnlineResource)
                    linkage: https://console.cloud.google.com/storage/browser/gcp-public-data-goes-18
                    protocol:  HTTPS
                    applicationProfile:  Download
                    name:  GOES-18 Google Cloud Bucket Explorer (Region: US-multiple)
                    description:  Browse view to explore the Google Cloud bucket for GOES-18. Data relevant to this can be found in folders with the prefix ABI-L2-ACHA.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                unitsOfDistribution:  Region: US-multiple
                onLine:  (CI_OnlineResource)
                    linkage: https://console.cloud.google.com/marketplace/product/noaa-public/goes
                    protocol:  HTTPS
                    applicationProfile:  Information
                    name:  Google Cloud Landing Page (Region: US-multiple)
                    description:  Information on Google Cloud data access for GOES datasets.
                    function:  (CI_OnLineFunctionCode) information
return to top
    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
            extent:  #boundingExtent
        lineage:  (LI_Lineage)
            statement:  The data were produced by the NOAA Office of Satellite and Product Operations (OSPO) and are archived at the NOAA National Centers for Environmental Information (NCEI).
            processStep:  (LE_ProcessStep)
                description:  The Cloud Top Temperature, Cloud Top Pressure, and Cloud Top Height products are generated by the GOES-R ABI Cloud Top Height ground processing algorithm. The Cloud Top Height algorithm is an important component of the GOES-R ground processing precedence chain as the output of the algorithm is used in the generation of other ABI Level 2+ products. The algorithm retrieves a state vector composed of cloud top temperature, channel 14 emissivity, and band 15/14 beta ratio. It is retrieved using an optimal estimation technique. Cloud top pressure and height are then derived from cloud top temperature. The channel 14 emissivity and band 15/14 beta ratio are output as intermediate products. Pixels in the product image with out of range values are assigned the minimum or maximum value in the valid range. Cloudy conditions are determined using cloudy and probably cloudy pixels indicated in the temporally coincident intermediate 4-level cloud mask generated by the Cloud Mask algorithm. The Cloud Top Height algorithm operates on 2 km resolution pixels, generating intermediate temperature, pressure, and height products at this resolution, but the delivered Cloud Top Height and Pressure products are aggregated to 4 km or 10 km as needed to satisfy end user product resolution requirements.
                dateTime: (missing)
                processor:  (CI_ResponsibleParty)
                    organisationName:  DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
                    role:  (CI_RoleCode) processor
                source:  sd001
                processingInformation:  (LE_Processing)
                    identifier: (missing)
                    documentation:  (CI_Citation)
                        title:  GOES-R Algorithm Working Group
                        date: (missing)
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            organisationName:  DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
                            role:  (CI_RoleCode) publisher
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            organisationName: (missing)
                            contactInfo:  (CI_Contact)
                                onlineResource:  (CI_OnlineResource)
                                    linkage: https://www.star.nesdis.noaa.gov/goesr/
                                    protocol:  HTTPS
                                    applicationProfile:  Web Browser
                                    name:  GOES-R Algorithm Working Group
                                    description:  The GOES-R Algorithm Working Group creates the algorithms that process the quality controlled satellite instrument data and produces resulting data products.
                                    function:  (CI_OnLineFunctionCode) information
                            role: (missing)
                    documentation:  (CI_Citation)
                        title:  NOAA Satellite Information System Product Quality
                        date: (missing)
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            organisationName: (missing)
                            contactInfo:  (CI_Contact)
                                onlineResource:  (CI_OnlineResource)
                                    linkage: https://www.noaasis.noaa.gov/GOES/PS_PVR2.html
                                    protocol:  HTTPS
                                    applicationProfile:  Web Browser
                                    name:  NOAA Satellite Information System Product Quality
                                    description:  Peer/Stakeholder Product Validation Reviews by satellite and product.
                                    function:  (CI_OnLineFunctionCode) information
                            role: (missing)
                    algorithm:  (LE_Algorithm)
                        citation:  (CI_Citation)
                            title:  GOES-R Algorithm Theoretical Basis Documents
                            date: (missing)
                            citedResponsibleParty:  (CI_ResponsibleParty)
                                organisationName:  DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
                                role:  (CI_RoleCode) publisher
                            citedResponsibleParty:  (CI_ResponsibleParty)
                                organisationName: (missing)
                                contactInfo:  (CI_Contact)
                                    onlineResource:  (CI_OnlineResource)
                                        linkage: https://www.star.nesdis.noaa.gov/goesr/documentation_ATBDs.php
                                        applicationProfile:  Web Browser
                                        name:  GOES-R Algorithm Theoretical Basis Documents
                                        description:  Descriptions of how the algorithms work, their underlying designs, and initial comparison with prior algorithms and results.
                                        function:  (CI_OnLineFunctionCode) information
                                role: (missing)
                        description:  See Algorithm Citation
            processStep:  (LE_ProcessStep)
                description:  The GOES-16 ABI Cloud Top Height algorithm reached beta maturity.
                dateTime:
                  DateTime:  2017-05-16T00:00:00
                processor:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    role:  (CI_RoleCode) processor
            processStep:  (LE_ProcessStep)
                description:  The GOES-16 ABI Cloud Top Height algorithm reached provisional maturity.
                dateTime:
                  DateTime:  2018-02-28T00:00:00
                processor:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    role:  (CI_RoleCode) processor
            processStep:  (LE_ProcessStep)
                description:  The GOES-16 ABI Cloud Top Height algorithm reached full validation maturity.
                dateTime: (missing)
                processor:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    role:  (CI_RoleCode) processor
            processStep:  (LE_ProcessStep)
                description:  The GOES-17 ABI Cloud Top Height algorithm reached beta maturity.
                dateTime:
                  DateTime:  2018-08-27T00:00:00
                processor:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    role:  (CI_RoleCode) processor
            processStep:  (LE_ProcessStep)
                description:  The GOES-17 ABI Cloud Top Height algorithm reached provisional maturity.
                dateTime: (missing)
                processor:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    role:  (CI_RoleCode) processor
            processStep:  (LE_ProcessStep)
                description:  The GOES-17 ABI Cloud Top Height algorithm reached full validation maturity.
                dateTime: (missing)
                processor:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    role:  (CI_RoleCode) processor
            source:  (LE_Source)
                description:  NCEI landing page for ABI-L1b-Rad
                sourceCitation:  (CI_Citation)
                    title:  NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 1b Radiances
                    date:  (CI_Date)
                        date:  2017-06-01
                        dateType:  (CI_DateTypeCode) publication
                    edition:  Provisional
                    identifier:  (MD_Identifier)
                        code:  doi:10.7289/V5BV7DSR
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) distributor
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://doi.org/10.7289/V5BV7DSR
                                protocol:  HTTPS
                                applicationProfile:  Web Browser
                                name:  NCEI landing page for ABI-L1-RAD
                                description:  Source dataset landing page with general information and access links for the dataset.
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceExtent:  (EX_Extent)
                    geographicElement:  (EX_GeographicBoundingBox)
                        extentTypeCode:  1
                        westBoundLongitude:  -156.2995
                        eastBoundLongitude:  6.2995
                        southBoundLatitude:  -81.3282
                        northBoundLatitude:  81.3282
                    geographicElement:  (EX_GeographicBoundingBox)
                        extentTypeCode:  1
                        westBoundLongitude:  141.7005
                        eastBoundLongitude:  -55.7005
                        southBoundLatitude:  -81.3282
                        northBoundLatitude:  81.3282
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  2017-02-28
                            endPosition:
                sourceStep:  ps001
return to top
    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) repository
            levelDescription:  (MD_ScopeDescription)
                other:  NOAA National Centers for Environmental Information
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
                dateTime:
                  DateTime:  2015-04-22T00:00:00
return to top
    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        maintenanceNote:  Bulk metadata change applied on 2023-07-12. See version control repository history for metadata change details.