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                        <gmd:CI_OnlineResource>
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                            <gco:CharacterString>HTTPS</gco:CharacterString>
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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:DS_InitiativeTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode" codeListValue="collection">collection</gmd:DS_InitiativeTypeCode>
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        <gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639-2/php/code_list.php" codeListValue="eng">eng; USA</gmd:LanguageCode>
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        <gmd:MD_Distributor>
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            <gmd:CI_ResponsibleParty>
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                <gmx:Anchor xlink:href="https://ror.org/04r0wrp59" xlink:actuate="onRequest">NOAA National Centers for Environmental Information</gmx:Anchor>
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                        <gco:CharacterString>+1-301-713-3277</gco:CharacterString>
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                        <gco:CharacterString>ncei.info@noaa.gov</gco:CharacterString>
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                <gco:CharacterString>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.</gco:CharacterString>
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                <gco:CharacterString>Contact NCEI for other distribution options and instructions.</gco:CharacterString>
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                <gco:Real>875.836</gco:Real>
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                <gmd:CI_OnlineResource>
                  <gmd:linkage>
                    <gmd:URL>https://doi.org/10.7289/v50r9mn2</gmd:URL>
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                    <gco:CharacterString>Web browser</gco:CharacterString>
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                    <gco:CharacterString>NCEI Dataset Landing Page</gco:CharacterString>
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                    <gco:CharacterString>Navigate directly to the URL for a descriptive web page with download links.</gco:CharacterString>
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                    <gco:CharacterString>HTTPS</gco:CharacterString>
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                    <gco:CharacterString>Navigate directly to the URL for a descriptive web page with download links.</gco:CharacterString>
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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:CI_OnlineResource>
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                  <gmd:applicationProfile>
                    <gco:CharacterString>Web browser</gco:CharacterString>
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                  <gmd:name>
                    <gco:CharacterString>HTTPS</gco:CharacterString>
                  </gmd:name>
                  <gmd:description>
                    <gco:CharacterString>Navigate directly to the URL for data access and direct download.</gco:CharacterString>
                  </gmd:description>
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                    <gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="download">download</gmd:CI_OnLineFunctionCode>
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                </gmd:CI_OnlineResource>
              </gmd:onLine>
              <gmd:onLine>
                <gmd:CI_OnlineResource>
                  <gmd:linkage>
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                  <gmd:protocol>
                    <gco:CharacterString>FTP</gco:CharacterString>
                  </gmd:protocol>
                  <gmd:applicationProfile>
                    <gco:CharacterString>Any FTP client</gco:CharacterString>
                  </gmd:applicationProfile>
                  <gmd:name>
                    <gco:CharacterString>FTP</gco:CharacterString>
                  </gmd:name>
                  <gmd:description>
                    <gco:CharacterString>These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).</gco:CharacterString>
                  </gmd:description>
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                    <gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="download">download</gmd:CI_OnLineFunctionCode>
                  </gmd:function>
                </gmd:CI_OnlineResource>
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        </gmd:MD_Distributor>
      </gmd:distributor>
    </gmd:MD_Distribution>
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    <gmd:DQ_DataQuality>
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                          <gmd:date gco:nilReason="inapplicable" />
                          <gmd:dateType>
                            <gmd:CI_DateTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
                          </gmd:dateType>
                        </gmd:CI_Date>
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                        <gmd:CI_ResponsibleParty>
                          <gmd:individualName gco:nilReason="inapplicable" />
                          <gmd:contactInfo>
                            <gmd:CI_Contact>
                              <gmd:onlineResource>
                                <gmd:CI_OnlineResource>
                                  <gmd:linkage>
                                    <gmd:URL>https://www.ncei.noaa.gov/archive/accession/0170450/1.1</gmd:URL>
                                  </gmd:linkage>
                                  <gmd:protocol>
                                    <gco:CharacterString>HTTPS</gco:CharacterString>
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                                  <gmd:name>
                                    <gco:CharacterString>NCEI Accession 0170450 v1.1</gco:CharacterString>
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                                  <gmd:description>
                                    <gco:CharacterString>published 2018-02-06T20:10:36Z</gco:CharacterString>
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                                </gmd:CI_OnlineResource>
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Units: ppm;
Observation Category: in situ;
Sampling Instrument: LiCOR 6262</gco:CharacterString>
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Units: umole m-2 s-1;
Observation Category: model output;
Sampling Instrument: model</gco:CharacterString>
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          <gmd:processStep>
            <gmi:LE_ProcessStep>
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                <gco:CharacterString>Parameter or Variable: Atmospheric footprint (calculated);
Units: ppm/(umol m-2 s-1);
Observation Category: model output;
Sampling Instrument: WRF-STILT</gco:CharacterString>
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            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Population (calculated);
Units: people;
Observation Category: model output;
Sampling Instrument: model</gco:CharacterString>
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  <gmd:metadataMaintenance>
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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>
      <gmd:maintenanceNote>
        <gco:CharacterString>Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.</gco:CharacterString>
      </gmd:maintenanceNote>
      <gmd:contact>
        <gmd:CI_ResponsibleParty>
          <gmd:organisationName>
            <gco:CharacterString>NOAA National Centers for Environmental Information</gco:CharacterString>
          </gmd:organisationName>
          <gmd:role>
            <gmd:CI_RoleCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="custodian">custodian</gmd:CI_RoleCode>
          </gmd:role>
        </gmd:CI_ResponsibleParty>
      </gmd:contact>
    </gmd:MD_MaintenanceInformation>
  </gmd:metadataMaintenance>
</gmi:MI_Metadata>