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                    <gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
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        </gmd:MD_Distributor>
      </gmd:distributor>
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        <gmd:DQ_Scope id="datasetScope">
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          <gmd:extent xlink:href="#boundingExtent" />
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            <gco:CharacterString>Over 30 years of records of balloon frost point hygrometer launches initiating at Boulder CO.  The data originated here at NOAA ESRL, starting with strip chart recordings of sondes in the late 60s.</gco:CharacterString>
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            <gmd:MD_ScopeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_ScopeCode" codeListValue="repository">repository</gmd:MD_ScopeCode>
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                <gco:CharacterString>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.</gco:CharacterString>
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                <gco:DateTime>2015-04-22T00:00:00</gco:DateTime>
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    <gmd:MD_MaintenanceInformation>
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        <gmd:MD_MaintenanceFrequencyCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode" codeListValue="asNeeded">asNeeded</gmd:MD_MaintenanceFrequencyCode>
      </gmd:maintenanceAndUpdateFrequency>
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        <gco:CharacterString>Bulk metadata change applied on 2023-06-23. See version control repository history for metadata change details.</gco:CharacterString>
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