<?xml version="1.0" encoding="utf-8" ?><gmi:MI_Metadata
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:gco="http://www.isotc211.org/2005/gco"
  xmlns:gfc="http://www.isotc211.org/2005/gfc"
  xmlns:gmd="http://www.isotc211.org/2005/gmd"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:srv="http://www.isotc211.org/2005/srv"
  xmlns:gml="http://www.opengis.net/gml/3.2"
  xmlns:gsr="http://www.isotc211.org/2005/gsr"
  xmlns:gss="http://www.isotc211.org/2005/gss"
  xmlns:gts="http://www.isotc211.org/2005/gts"
  xmlns:gmi="http://www.isotc211.org/2005/gmi"
  xmlns:gmx="http://www.isotc211.org/2005/gmx"
  xsi:schemaLocation="http://www.isotc211.org/2005/gmi https://data.noaa.gov/resources/iso19139/schema.xsd">
  <gmd:fileIdentifier>
    <gco:CharacterString>http://lod.bco-dmo.org/id/dataset/947080</gco:CharacterString>
  </gmd:fileIdentifier>
  <gmd:language>
    <gco:CharacterString>eng; USA</gco:CharacterString>
  </gmd:language>
  <gmd:characterSet>
    <gmd:MD_CharacterSetCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_CharacterSetCode" codeListValue="utf8">utf8</gmd:MD_CharacterSetCode>
  </gmd:characterSet>
  <gmd:hierarchyLevel>
    <gmd:MD_ScopeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset" codeSpace="005">dataset</gmd:MD_ScopeCode>
  </gmd:hierarchyLevel>
  <gmd:hierarchyLevelName>
    <gco:CharacterString>Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project</gco:CharacterString>
  </gmd:hierarchyLevelName>
  <gmd:contact>
    <gmd:CI_ResponsibleParty>
  <gmd:organisationName>
    <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/affiliation/191.rdf" xlink:actuate="onRequest">Biological and Chemical Oceanography Data Management Office (BCO-DMO)</gmx:Anchor>
  </gmd:organisationName>
  <gmd:contactInfo>
    <gmd:CI_Contact>
		  <gmd:phone>
		    <gmd:CI_Telephone>
				  <gmd:voice>
				    <gco:CharacterString>Unavailable</gco:CharacterString>
				  </gmd:voice>
				  <gmd:facsimile>
				    <gco:CharacterString>508-289-2009</gco:CharacterString>
				  </gmd:facsimile>
				</gmd:CI_Telephone>
		  </gmd:phone>
		  <gmd:address>
		    <gmd:CI_Address>
				  <gmd:deliveryPoint>
				    <gco:CharacterString>WHOI MS#36</gco:CharacterString>
				  </gmd:deliveryPoint>
				  <gmd:city>
				    <gco:CharacterString>Woods Hole</gco:CharacterString>
				  </gmd:city>
				  <gmd:administrativeArea>
				    <gco:CharacterString>MA</gco:CharacterString>
				  </gmd:administrativeArea>
				  <gmd:postalCode>
				    <gco:CharacterString>02543</gco:CharacterString>
				  </gmd:postalCode>
				  <gmd:country>
				    <gco:CharacterString>USA</gco:CharacterString>
				  </gmd:country>
				  <gmd:electronicMailAddress>
				    <gco:CharacterString>info@bco-dmo.org</gco:CharacterString>
				  </gmd:electronicMailAddress>
		    </gmd:CI_Address>
		  </gmd:address>
      <gmd:onlineResource>
          <gmd:CI_OnlineResource>
            <gmd:linkage>
              <gmd:URL>http://www.bco-dmo.org</gmd:URL>
            </gmd:linkage>
          </gmd:CI_OnlineResource>
        </gmd:onlineResource>
		  <gmd:hoursOfService>
        <gco:CharacterString>Monday - Friday 8:00am - 5:00pm</gco:CharacterString>
      </gmd:hoursOfService>
		  <gmd:contactInstructions>
		    <gco:CharacterString>For questions regarding this resource, please contact BCO-DMO via the email address provided.</gco:CharacterString>
		  </gmd:contactInstructions>
		</gmd:CI_Contact>
  </gmd:contactInfo>
  <gmd:role>
    <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="pointOfContact"  codeSpace="007">pointOfContact</gmd:CI_RoleCode>
  </gmd:role>
</gmd:CI_ResponsibleParty>
  </gmd:contact>
  <gmd:dateStamp>
    <gco:Date>2024-12-27</gco:Date>
  </gmd:dateStamp>
  <gmd:metadataStandardName>
    <gco:CharacterString>ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data</gco:CharacterString>
  </gmd:metadataStandardName>
  <gmd:metadataStandardVersion>
    <gco:CharacterString>ISO 19115-2:2009(E)</gco:CharacterString>
  </gmd:metadataStandardVersion>
  <gmd:referenceSystemInfo xlink:href="https://data.noaa.gov/docucomp/895cc120-95ed-11e0-aa80-0800200c9a66" xlink:title="WGS 84 / World Mercator"/>
  <gmd:identificationInfo>
    <gmd:MD_DataIdentification>
      <gmd:citation>
        <gmd:CI_Citation>
          <gmd:title>
            <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset/947080.rdf" xlink:actuate="onRequest">Total organic carbon, total nitrogen content; and nitrate, ammonium and oxygen isotope composition of atmospheric particulates collected aboard R/V Dong Fang Hong-3 in the western North Pacific from October 31 to December 1, 2019.</gmx:Anchor>
          </gmd:title>
          <gmd:date>
            <gmd:CI_Date>
              <gmd:date>
                <gco:Date>2025-02-13</gco:Date>
              </gmd:date>
              <gmd:dateType>
                <gmd:CI_DateTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication" codeSpace="ISOTC211/19115">publication</gmd:CI_DateTypeCode>
              </gmd:dateType>
            </gmd:CI_Date>
          </gmd:date>
          <gmd:date>
            <gmd:CI_Date>
              <gmd:date>
                <gco:Date>2025-02-13</gco:Date>
              </gmd:date>
              <gmd:dateType>
                <gmd:CI_DateTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="revision" codeSpace="ISOTC211/19115">revision</gmd:CI_DateTypeCode>
              </gmd:dateType>
            </gmd:CI_Date>
          </gmd:date>
          <gmd:edition>
            <gco:CharacterString/>
          </gmd:edition>
          <gmd:identifier>
            <gmd:MD_Identifier>
              <gmd:authority>
                <gmd:CI_Citation>
                  <gmd:title>
                    <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/affiliation/272.rdf" xlink:actuate="onRequest">Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)</gmx:Anchor>
                  </gmd:title>
                  <gmd:date>
                    <gmd:CI_Date>
                      <gmd:date>
                        <gco:Date>2025-02-13</gco:Date>
                      </gmd:date>
                      <gmd:dateType>
                        <gmd:CI_DateTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication" codeSpace="002">publication</gmd:CI_DateTypeCode>
                      </gmd:dateType>
                    </gmd:CI_Date>
                  </gmd:date>
                                  </gmd:CI_Citation>
              </gmd:authority>
              <gmd:code>
                <gmx:Anchor xlink:href="https://doi.org/10.26008/1912/bco-dmo.947080.1" xlink:title="DOI" xlink:actuate="onRequest">https://doi.org/10.26008/1912/bco-dmo.947080.1</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmd:identifier>
          <gmd:citedResponsibleParty>
           <gmd:CI_ResponsibleParty>
              <gmd:individualName>
                <gmx:Anchor xlink:href="http://orcid.org/0000-0001-6716-6783" xlink:title="ORCID" xlink:actuate="onRequest">Meredith Hastings</gmx:Anchor>
              </gmd:individualName>
              <gmd:organisationName>
                <gmx:Anchor xlink:href="https://ror.org/05gq02987" xlink:title="ROR ID" xlink:actuate="onRequest">Brown University</gmx:Anchor>
              </gmd:organisationName>
              <gmd:positionName>
               <gco:CharacterString></gco:CharacterString>
              </gmd:positionName>
              <gmd:role>
                <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="principalInvestigator" codeSpace="008">principalInvestigator</gmd:CI_RoleCode>
              </gmd:role>
            </gmd:CI_ResponsibleParty>
          </gmd:citedResponsibleParty>
          <gmd:citedResponsibleParty>
           <gmd:CI_ResponsibleParty>
              <gmd:individualName>
                <gmx:Anchor xlink:href="http://orcid.org/0000-0003-1745-3295" xlink:title="ORCID" xlink:actuate="onRequest">Hayley N. Schiebel</gmx:Anchor>
              </gmd:individualName>
              <gmd:organisationName>
                <gmx:Anchor xlink:href="https://ror.org/05y50nr98" xlink:title="ROR ID" xlink:actuate="onRequest">Suffolk University</gmx:Anchor>
              </gmd:organisationName>
              <gmd:positionName>
               <gco:CharacterString></gco:CharacterString>
              </gmd:positionName>
              <gmd:role>
                <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="principalInvestigator" codeSpace="008">principalInvestigator</gmd:CI_RoleCode>
              </gmd:role>
            </gmd:CI_ResponsibleParty>
          </gmd:citedResponsibleParty>
          <gmd:citedResponsibleParty>
            <gmd:CI_ResponsibleParty>
  <gmd:organisationName>
    <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/affiliation/191.rdf" xlink:actuate="onRequest">Biological and Chemical Oceanography Data Management Office (BCO-DMO)</gmx:Anchor>
  </gmd:organisationName>
  <gmd:contactInfo>
    <gmd:CI_Contact>
		  <gmd:phone>
		    <gmd:CI_Telephone>
				  <gmd:voice>
				    <gco:CharacterString>Unavailable</gco:CharacterString>
				  </gmd:voice>
				  <gmd:facsimile>
				    <gco:CharacterString>508-289-2009</gco:CharacterString>
				  </gmd:facsimile>
				</gmd:CI_Telephone>
		  </gmd:phone>
		  <gmd:address>
		    <gmd:CI_Address>
				  <gmd:deliveryPoint>
				    <gco:CharacterString>WHOI MS#36</gco:CharacterString>
				  </gmd:deliveryPoint>
				  <gmd:city>
				    <gco:CharacterString>Woods Hole</gco:CharacterString>
				  </gmd:city>
				  <gmd:administrativeArea>
				    <gco:CharacterString>MA</gco:CharacterString>
				  </gmd:administrativeArea>
				  <gmd:postalCode>
				    <gco:CharacterString>02543</gco:CharacterString>
				  </gmd:postalCode>
				  <gmd:country>
				    <gco:CharacterString>USA</gco:CharacterString>
				  </gmd:country>
				  <gmd:electronicMailAddress>
				    <gco:CharacterString>info@bco-dmo.org</gco:CharacterString>
				  </gmd:electronicMailAddress>
		    </gmd:CI_Address>
		  </gmd:address>
      <gmd:onlineResource>
          <gmd:CI_OnlineResource>
            <gmd:linkage>
              <gmd:URL>http://www.bco-dmo.org</gmd:URL>
            </gmd:linkage>
          </gmd:CI_OnlineResource>
        </gmd:onlineResource>
		  <gmd:hoursOfService>
        <gco:CharacterString>Monday - Friday 8:00am - 5:00pm</gco:CharacterString>
      </gmd:hoursOfService>
		  <gmd:contactInstructions>
		    <gco:CharacterString>For questions regarding this resource, please contact BCO-DMO via the email address provided.</gco:CharacterString>
		  </gmd:contactInstructions>
		</gmd:CI_Contact>
  </gmd:contactInfo>
  <gmd:role>
    <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="publisher" >publisher</gmd:CI_RoleCode>
  </gmd:role>
</gmd:CI_ResponsibleParty>
          </gmd:citedResponsibleParty>
          <gmd:otherCitationDetails>
            <gco:CharacterString>Cite this dataset as: MacFarland, A., Hastings, M., Schiebel, H. N. (2025) Total organic carbon, total nitrogen content; and nitrate, ammonium and oxygen isotope composition of atmospheric particulates collected aboard R/V Dong Fang Hong-3 in the western North Pacific from October 31 to December 1, 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-02-13 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.947080.1 [access date]</gco:CharacterString>
          </gmd:otherCitationDetails>
          </gmd:CI_Citation>
      </gmd:citation>
      <gmd:abstract>
        <gco:CharacterString>Western Pacifi Cruise Data Dataset Description:  Methods and Sampling: &amp;lt;p&amp;gt;On-ship aerosol sampling was conducted on the R/V Dong Fang Hong-3 during a cruise to the western NP from October 31 to December 1, 2019. We used two portable aerosol particle samplers (model 2030, Qingdao Laoying Environmental Technology Co.) with a filter size of 9 cm O.D. The GF/F filters were precombusted (550 °C, 4 h) before used, and the sampling period was 18 to 72 h for each filter with an air ﬂow rate of 100 L/min based on the cruise track. A total of 16 samples were collected during the cruise.&amp;lt;/p&amp;gt;</gco:CharacterString>
      </gmd:abstract>
      <gmd:credit>
        <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/award/910823.rdf" xlink:title="OCE-1851318" xlink:actuate="onRequest">Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1851318 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1851318</gmx:Anchor>
      </gmd:credit>
        <gmd:credit>
        <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/award/910830.rdf" xlink:title="OCE-1851343" xlink:actuate="onRequest">Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1851343 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1851343</gmx:Anchor>
      </gmd:credit>
        <gmd:status>
        <gmd:MD_ProgressCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ProgressCode" codeListValue="completed">completed</gmd:MD_ProgressCode>
      </gmd:status>
      <gmd:pointOfContact>
        <gmd:CI_ResponsibleParty>
          <gmd:individualName>
            <gmx:Anchor xlink:href="http://orcid.org/0000-0001-6716-6783" xlink:title="ORCID" xlink:actuate="onRequest">Meredith Hastings</gmx:Anchor>
          </gmd:individualName>
          <gmd:organisationName>
            <gmx:Anchor xlink:href="https://ror.org/05gq02987" xlink:title="ROR ID" xlink:actuate="onRequest">Brown University</gmx:Anchor>
          </gmd:organisationName>
          <gmd:contactInfo>
            <gmd:CI_Contact>
            <gmd:phone>
                <gmd:CI_Telephone>
                  <gmd:voice>
                    <gco:CharacterString>401-863-3658</gco:CharacterString>
                  </gmd:voice>
                </gmd:CI_Telephone>
              </gmd:phone>
            <gmd:address>
                <gmd:CI_Address>
                                  <gmd:deliveryPoint>
                    <gco:CharacterString>324 Brook Street Box 1846</gco:CharacterString>
                  </gmd:deliveryPoint>
                                  <gmd:city>
                    <gco:CharacterString>Providence</gco:CharacterString>
                  </gmd:city>                  <gmd:administrativeArea>
                    <gco:CharacterString>RI</gco:CharacterString>
                  </gmd:administrativeArea>                  <gmd:postalCode>
                    <gco:CharacterString>02912</gco:CharacterString>
                  </gmd:postalCode>                  <gmd:country>
                    <gco:CharacterString>USA</gco:CharacterString>
                  </gmd:country>                  <gmd:electronicMailAddress>
                    <gco:CharacterString>meredith_hastings@brown.edu</gco:CharacterString>
                  </gmd:electronicMailAddress>
                </gmd:CI_Address>
              </gmd:address>
            </gmd:CI_Contact>
          </gmd:contactInfo>
          <gmd:role>
            <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="pointOfContact" codeSpace="007">pointOfContact</gmd:CI_RoleCode>
          </gmd:role>
        </gmd:CI_ResponsibleParty>
      </gmd:pointOfContact>
      <gmd:pointOfContact>
        <gmd:CI_ResponsibleParty>
          <gmd:individualName>
            <gmx:Anchor xlink:href="http://orcid.org/0000-0003-1745-3295" xlink:title="ORCID" xlink:actuate="onRequest">Hayley N. Schiebel</gmx:Anchor>
          </gmd:individualName>
          <gmd:organisationName>
            <gmx:Anchor xlink:href="https://ror.org/05y50nr98" xlink:title="ROR ID" xlink:actuate="onRequest">Suffolk University</gmx:Anchor>
          </gmd:organisationName>
          <gmd:contactInfo>
            <gmd:CI_Contact>
            <gmd:phone>
                <gmd:CI_Telephone>
                  <gmd:voice>
                    <gco:CharacterString>617-994-6811</gco:CharacterString>
                  </gmd:voice>
                </gmd:CI_Telephone>
              </gmd:phone>
            <gmd:address>
                <gmd:CI_Address>
                                  <gmd:deliveryPoint>
                    <gco:CharacterString>20 Somerset 5th Floor, Rm. 529</gco:CharacterString>
                  </gmd:deliveryPoint>
                                  <gmd:city>
                    <gco:CharacterString>Boston</gco:CharacterString>
                  </gmd:city>                  <gmd:administrativeArea>
                    <gco:CharacterString>MA</gco:CharacterString>
                  </gmd:administrativeArea>                  <gmd:postalCode>
                    <gco:CharacterString>02108-2770</gco:CharacterString>
                  </gmd:postalCode>                  <gmd:country>
                    <gco:CharacterString>USA</gco:CharacterString>
                  </gmd:country>                  <gmd:electronicMailAddress>
                    <gco:CharacterString>hschiebel@suffolk.edu</gco:CharacterString>
                  </gmd:electronicMailAddress>
                </gmd:CI_Address>
              </gmd:address>
            </gmd:CI_Contact>
          </gmd:contactInfo>
          <gmd:role>
            <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="pointOfContact" codeSpace="007">pointOfContact</gmd:CI_RoleCode>
          </gmd:role>
        </gmd:CI_ResponsibleParty>
      </gmd:pointOfContact>
            <gmd:resourceMaintenance>
        <gmd:MD_MaintenanceInformation>
          <gmd:maintenanceAndUpdateFrequency>
            <gmd:MD_MaintenanceFrequencyCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode" codeListValue="asNeeded" codeSpace="009">asNeeded</gmd:MD_MaintenanceFrequencyCode>
          </gmd:maintenanceAndUpdateFrequency>
          <gmd:maintenanceNote>
            <gco:CharacterString>Dataset Version: 1</gco:CharacterString>
          </gmd:maintenanceNote>
          </gmd:MD_MaintenanceInformation>
      </gmd:resourceMaintenance>
      <gmd:resourceFormat>
        <gmd:MD_Format>
          <gmd:name>
             <gco:CharacterString>Unknown</gco:CharacterString>
          </gmd:name>
          <gmd:version gco:nilReason="unknown"/>
          </gmd:MD_Format>
      </gmd:resourceFormat>
            <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948753.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/960.rdf" xlink:actuate="onRequest">Sample_Number</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948754.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1070.rdf" xlink:actuate="onRequest">Date</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948755.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1117.rdf" xlink:actuate="onRequest">Start_time</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948756.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1908.rdf" xlink:actuate="onRequest">Start_DateTime_UTC</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948757.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/489496.rdf" xlink:actuate="onRequest">Sampling_period_h</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948758.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/730.rdf" xlink:actuate="onRequest">latitude</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948759.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/731.rdf" xlink:actuate="onRequest">longitude</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948760.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/960.rdf" xlink:actuate="onRequest">Duplicate</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948761.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1871.rdf" xlink:actuate="onRequest">Total_Air_Volume_L</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948762.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1871.rdf" xlink:actuate="onRequest">TotalAirVolume_m3</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948763.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1678.rdf" xlink:actuate="onRequest">ParticleWeight_mg</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948764.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1211.rdf" xlink:actuate="onRequest">TOC_percent</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948765.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1213.rdf" xlink:actuate="onRequest">TN_percent</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948766.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1186.rdf" xlink:actuate="onRequest">C_N_Ratio</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948767.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1631.rdf" xlink:actuate="onRequest">Carbon13_12_Ratio</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948768.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1633.rdf" xlink:actuate="onRequest">Delta15N_Nitrate</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948769.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/948643.rdf" xlink:actuate="onRequest">Delta15N_NH4</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948770.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/1849.rdf" xlink:actuate="onRequest">Delta18Oxygen_Nitrate</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-parameter/948771.rdf" xlink:title="http://lod.bco-dmo.org/id/parameter/709857.rdf" xlink:actuate="onRequest">Delta17O_Nitrate</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-instrument/948462.rdf" xlink:title="http://lod.bco-dmo.org/id/instrument/527.rdf" xlink:actuate="onRequest">NEC 0.5MV XCAMS</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-instrument/947089.rdf" xlink:title="http://lod.bco-dmo.org/id/instrument/691.rdf" xlink:actuate="onRequest">Portable aerosol particle samplers - model 2030, Qingdao Laoying Environmental Technology Co.</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-instrument/947090.rdf" xlink:title="http://lod.bco-dmo.org/id/instrument/546339.rdf" xlink:actuate="onRequest">Elementar vario Isotope select</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-instrument/947091.rdf" xlink:title="http://lod.bco-dmo.org/id/instrument/469.rdf" xlink:actuate="onRequest">Thermo Delta V Plus Isotope Ratio Mass Spectrometer</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset-instrument/947092.rdf" xlink:title="http://lod.bco-dmo.org/id/instrument/685.rdf" xlink:actuate="onRequest">Therm Delta V advantage isotope ratio mass spectrometer coupled with an Elemental Analyzer-IsoLink CN</gmx:Anchor>
        </gmd:keyword>
        <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme" codeSpace="005">theme</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>None, User defined</gco:CharacterString>
              </gmd:title>
              <gmd:date gco:nilReason="unknown"/>
            </gmd:CI_Citation>
          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
            <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/960.rdf" xlink:title="Parameter" xlink:actuate="onRequest">sample identification</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/1070.rdf" xlink:title="Parameter" xlink:actuate="onRequest">date</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/1117.rdf" xlink:title="Parameter" xlink:actuate="onRequest">time begin</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/1908.rdf" xlink:title="Parameter" xlink:actuate="onRequest">ISO_DateTime_UTC</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/489496.rdf" xlink:title="Parameter" xlink:actuate="onRequest">incubation time or duration</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/730.rdf" xlink:title="Parameter" xlink:actuate="onRequest">latitude</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/731.rdf" xlink:title="Parameter" xlink:actuate="onRequest">longitude</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/1871.rdf" xlink:title="Parameter" xlink:actuate="onRequest">sample_volume</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/1678.rdf" xlink:title="Parameter" xlink:actuate="onRequest">weight</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/1211.rdf" xlink:title="Parameter" xlink:actuate="onRequest">total organic Carbon</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/1213.rdf" xlink:title="Parameter" xlink:actuate="onRequest">total organic Nitrogen</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/1186.rdf" xlink:title="Parameter" xlink:actuate="onRequest">Carbon to Nitrogen ratio (C:N)</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/1631.rdf" xlink:title="Parameter" xlink:actuate="onRequest">Carbon 13 to Carbon 12 ratio of TCO2</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/1633.rdf" xlink:title="Parameter" xlink:actuate="onRequest">d15N_NO3</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/948643.rdf" xlink:title="Parameter" xlink:actuate="onRequest">d15N_NH4</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/1849.rdf" xlink:title="Parameter" xlink:actuate="onRequest">d18O_NO3</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/parameter/709857.rdf" xlink:title="Parameter" xlink:actuate="onRequest">d17O_NO3</gmx:Anchor>
        </gmd:keyword>
        <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="featureType">featureType</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>BCO-DMO Standard Parameters</gco:CharacterString>
              </gmd:title>
              <gmd:date gco:nilReason="unknown"/>
            </gmd:CI_Citation>
          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
            <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/527.rdf" xlink:title="Instrument" xlink:actuate="onRequest">Accelerator Mass Spectrometer</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/691.rdf" xlink:title="Instrument" xlink:actuate="onRequest">Aerosol Sampler</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/546339.rdf" xlink:title="Instrument" xlink:actuate="onRequest">Elemental Analyzer</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/469.rdf" xlink:title="Instrument" xlink:actuate="onRequest">Isotope-ratio Mass Spectrometer</gmx:Anchor>
        </gmd:keyword>
                <gmd:keyword>
          <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/685.rdf" xlink:title="Instrument" xlink:actuate="onRequest">Mass Spectrometer</gmx:Anchor>
        </gmd:keyword>
        <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="instrument">instrument</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>BCO-DMO Standard Instruments</gco:CharacterString>
              </gmd:title>
              <gmd:date gco:nilReason="unknown"/>
            </gmd:CI_Citation>
          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:resourceConstraints>
        <gmd:MD_LegalConstraints>
          <gmd:accessConstraints>
            <gmd:MD_RestrictionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_RestrictionCode" codeListValue="otherRestrictions" codeSpace="008">otherRestrictions</gmd:MD_RestrictionCode>
          </gmd:accessConstraints>
          <gmd:useConstraints>
            <gmd:MD_RestrictionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_RestrictionCode" codeListValue="otherRestrictions" codeSpace="008">otherRestrictions</gmd:MD_RestrictionCode>
          </gmd:useConstraints>
          <gmd:otherConstraints>
            <gco:CharacterString>Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.</gco:CharacterString>
          </gmd:otherConstraints>
        </gmd:MD_LegalConstraints>
              </gmd:resourceConstraints>
      <gmd:aggregationInfo>
        <gmd:MD_AggregateInformation>
          <gmd:aggregateDataSetName>
              <gmd:CI_Citation>
                <gmd:title>
                  <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/project/910824.rdf" xlink:title="Project" xlink:actuate="onRequest">Collaborative Research: Characterization of Reactive Nitrogen in The North Pacific Atmosphere</gmx:Anchor>
                </gmd:title>
                <gmd:date gco:nilReason="inapplicable"/>
                <gmd:citedResponsibleParty>
                  <gmd:CI_ResponsibleParty>
                    <gmd:contactInfo>
                      <gmd:CI_Contact>
                        <gmd:onlineResource>
                          <gmd:CI_OnlineResource>
                          <gmd:linkage>
                            <gmd:URL>https://osprey.bco-dmo.org/project/910824</gmd:URL>
                          </gmd:linkage>
                          <gmd:name>
                            <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/project/910824.rdf" xlink:title="Project Name" xlink:actuate="onRequest">Collaborative Research: Characterization of Reactive Nitrogen in The North Pacific Atmosphere</gmx:Anchor>
                          </gmd:name>
                          <gmd:description>
                            <gco:CharacterString>&lt;p&gt;&lt;strong&gt;NSF Award Abstract:&lt;/strong&gt;&lt;br /&gt;
Nitrogen is an essential element for life, and its availability can limit the growth of phytoplankton in the surface waters of the oceans. One source of nitrogen to surface waters is deposition from the atmosphere, which is the result of reactive nitrogen emissions from both human (anthropogenic) activities and natural processes. Anthropogenic nitrogen emissions to the atmosphere and nitrogen deposition to the oceans have increased exponentially since preindustrial times. In fact, global modeling studies have suggested that as much as 80% of total nitrogen deposition to the oceans is anthropogenic in origin, and that the magnitude of input to the global oceans rivals estimates of biological nitrogen fixation. The impacts associated with this increased nitrogen deposition are clear in both terrestrial and coastal systems, but the implications for open ocean biogeochemistry are less well studied. Recent work in the North Pacific Ocean (NPO) has suggested that increased nitrogen due to anthropogenic atmospheric deposition is detectable even in the open ocean, while other work can explain nutrient dynamics based upon natural biological and physical processes. The investigators propose to study the influence of both anthropogenic and natural sources on the deposition of nitrogen (as nitrate, ammonium, and organic nitrogen) in the NPO. This will be based on collection of aerosol and rainwater samples year-round at two sites: (1) Chang-Dao Island, China where they expect high anthropogenic nitrogen inputs; and (2) Oahu, Hawaii where they expect marine sources to dominate. They will also collect ship-based samples in the marine boundary layer via already planned short-term research cruises in each season. In addition to the scientific outcomes, this project will provide for human resources and professional development of the team members (faculty members, a graduate student, undergraduate student, and technicians), advance international collaborations, and contribute to education and public outreach. Identifying the sources of nitrogen deposition to the open ocean is crucial for understanding anthropogenic impacts on biogeochemical cycles. A primary question is, is nitrogen deposition the result of external, anthropogenic processes or does it represent recycled nitrogen from the ocean's point of view? The specific objectives of this project are to: characterize the atmospheric composition and sources of inorganic (ammonium and nitrate) and organic nitrogen with an emphasis on seasonality; diagnose the influence of air-sea exchange versus anthropogenic sources of nitrogen on atmospheric deposition; and determine the isotopic composition of gaseous and particulate inorganic nitrogen in the marine boundary layer via ship-based sample collections in the NPO. Using concentration and isotopic measurements of reactive nitrogen species, in addition to transport and chemical box modeling, the study aims to characterize nitrogen deposition in two locations with very different source influences. This study will provide the first comprehensive, seasonal analysis of the isotopic values of reactive nitrogen species in the NPO atmosphere where nitrogen deposition is considered intense. Ultimately this project will lead to a better understanding of how anthropogenic changes in the atmospheric nitrogen cycle may influence the biogeochemistry of the surface ocean as well as the composition of the marine atmosphere.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.&lt;/p&gt;</gco:CharacterString>
                          </gmd:description>
                          <gmd:function>
                            <gmd:CI_OnLineFunctionCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information"/>
                          </gmd:function>
                      </gmd:CI_OnlineResource>
                    </gmd:onlineResource>
                  </gmd:CI_Contact>
                </gmd:contactInfo>
                <gmd:role/>
              </gmd:CI_ResponsibleParty>
            </gmd:citedResponsibleParty>
          </gmd:CI_Citation>
        </gmd:aggregateDataSetName>
          <gmd:aggregateDataSetIdentifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/project/910824.rdf" xlink:title="Project Acronym" xlink:actuate="onRequest">North Pacific Atmos</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmd:aggregateDataSetIdentifier>
          <gmd:associationType>
            <gmd:DS_AssociationTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode" codeListValue="largerWorkCitation">largerWorkCitation</gmd:DS_AssociationTypeCode>
          </gmd:associationType>
          <gmd:initiativeType>
            <gmd:DS_InitiativeTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode" codeListValue="project">project</gmd:DS_InitiativeTypeCode>
          </gmd:initiativeType>
        </gmd:MD_AggregateInformation>
      </gmd:aggregationInfo>
      <gmd:language>
        <gco:CharacterString>eng; USA</gco:CharacterString>
      </gmd:language>
      <gmd:topicCategory>
        <gmd:MD_TopicCategoryCode>oceans</gmd:MD_TopicCategoryCode>
      </gmd:topicCategory>
       <gmd:extent>
        <gmd:EX_Extent id="boundingExtent"><gmd:geographicElement>
            <gmd:EX_GeographicBoundingBox id="boundingGeographicBoundingBox">
              <gmd:westBoundLongitude>
                <gco:Decimal>120.23222</gco:Decimal>
              </gmd:westBoundLongitude>
              <gmd:eastBoundLongitude>
                <gco:Decimal>153.33306</gco:Decimal>
              </gmd:eastBoundLongitude>
              <gmd:southBoundLatitude>
                <gco:Decimal>14.00056</gco:Decimal>
              </gmd:southBoundLatitude>
              <gmd:northBoundLatitude>
                <gco:Decimal>37.00028</gco:Decimal>
              </gmd:northBoundLatitude>
            </gmd:EX_GeographicBoundingBox>
          </gmd:geographicElement>
        <gmd:temporalElement>
            <gmd:EX_TemporalExtent>
              <gmd:extent>
                <gml:TimePeriod gml:id="boundingTemporalExtent">
                  <gml:beginPosition>2019-10-31</gml:beginPosition>
                  <gml:endPosition>2019-11-29</gml:endPosition>
                </gml:TimePeriod>
              </gmd:extent>
            </gmd:EX_TemporalExtent>
          </gmd:temporalElement>
          </gmd:EX_Extent>
      </gmd:extent>
      <gmd:extent>
          <gmd:EX_Extent>
            <gmd:geographicElement>
              <gmd:EX_GeographicDescription>
                <gmd:geographicIdentifier>
                  <gmd:MD_Identifier>
                    <gmd:code>
                      <gco:CharacterString>coastal China atmosphere, Northwestern Pacific waters and atmos, Hawaii atmosphere</gco:CharacterString>
                    </gmd:code>
                  </gmd:MD_Identifier>
                </gmd:geographicIdentifier>
              </gmd:EX_GeographicDescription>
            </gmd:geographicElement>
          </gmd:EX_Extent>
        </gmd:extent></gmd:MD_DataIdentification>
  </gmd:identificationInfo>
  <gmd:contentInfo>
    <gmd:MD_FeatureCatalogueDescription>
      <gmd:includedWithDataset>
        <gco:Boolean>0</gco:Boolean>
      </gmd:includedWithDataset>
      <gmd:featureCatalogueCitation>
        <gmd:CI_Citation>
          <gmd:title>
            <gco:CharacterString>BCO-DMO catalogue of parameters from Total organic carbon, total nitrogen content; and nitrate, ammonium and oxygen isotope composition of atmospheric particulates collected aboard R/V Dong Fang Hong-3 in the western North Pacific from October 31 to December 1, 2019.</gco:CharacterString>
          </gmd:title>
          <gmd:date gco:nilReason="unknown"/>
          <gmd:citedResponsibleParty>
            <gmd:CI_ResponsibleParty>
  <gmd:organisationName>
    <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/affiliation/191.rdf" xlink:actuate="onRequest">Biological and Chemical Oceanography Data Management Office (BCO-DMO)</gmx:Anchor>
  </gmd:organisationName>
  <gmd:contactInfo>
    <gmd:CI_Contact>
		  <gmd:phone>
		    <gmd:CI_Telephone>
				  <gmd:voice>
				    <gco:CharacterString>Unavailable</gco:CharacterString>
				  </gmd:voice>
				  <gmd:facsimile>
				    <gco:CharacterString>508-289-2009</gco:CharacterString>
				  </gmd:facsimile>
				</gmd:CI_Telephone>
		  </gmd:phone>
		  <gmd:address>
		    <gmd:CI_Address>
				  <gmd:deliveryPoint>
				    <gco:CharacterString>WHOI MS#36</gco:CharacterString>
				  </gmd:deliveryPoint>
				  <gmd:city>
				    <gco:CharacterString>Woods Hole</gco:CharacterString>
				  </gmd:city>
				  <gmd:administrativeArea>
				    <gco:CharacterString>MA</gco:CharacterString>
				  </gmd:administrativeArea>
				  <gmd:postalCode>
				    <gco:CharacterString>02543</gco:CharacterString>
				  </gmd:postalCode>
				  <gmd:country>
				    <gco:CharacterString>USA</gco:CharacterString>
				  </gmd:country>
				  <gmd:electronicMailAddress>
				    <gco:CharacterString>info@bco-dmo.org</gco:CharacterString>
				  </gmd:electronicMailAddress>
		    </gmd:CI_Address>
		  </gmd:address>
      <gmd:onlineResource>
          <gmd:CI_OnlineResource>
            <gmd:linkage>
              <gmd:URL>http://www.bco-dmo.org</gmd:URL>
            </gmd:linkage>
          </gmd:CI_OnlineResource>
        </gmd:onlineResource>
		  <gmd:hoursOfService>
        <gco:CharacterString>Monday - Friday 8:00am - 5:00pm</gco:CharacterString>
      </gmd:hoursOfService>
		  <gmd:contactInstructions>
		    <gco:CharacterString>For questions regarding this resource, please contact BCO-DMO via the email address provided.</gco:CharacterString>
		  </gmd:contactInstructions>
		</gmd:CI_Contact>
  </gmd:contactInfo>
  <gmd:role>
    <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="pointOfContact"  codeSpace="007">pointOfContact</gmd:CI_RoleCode>
  </gmd:role>
</gmd:CI_ResponsibleParty>
          </gmd:citedResponsibleParty>
          <gmd:otherCitationDetails>
            <gco:CharacterString>
            http://lod.bco-dmo.org/id/dataset-parameter/948753.rdf
	Name: Sample_Number
	Units: unitless
	Description: &lt;p&gt;The atmospheric particulates samplers were labeled from 1 to 16&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948754.rdf
	Name: Date
	Units: unitless
	Description: &lt;p&gt;The sampling date in ISO format (yyyy-mm-dd)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948755.rdf
	Name: Start_time
	Units: unitless
	Description: &lt;p&gt;Time when sampling started in format hh:mm:ss (Time Zone: UTC)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948756.rdf
	Name: Start_DateTime_UTC
	Units: unitless
	Description: &lt;p&gt;Start date and time of sampling in iso format (TimeZOne: UTC)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948757.rdf
	Name: Sampling_period_h
	Units: hours (hrs)
	Description: &lt;p&gt;Time sampling from start, in format hh (Time Zone: UTC)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948758.rdf
	Name: latitude
	Units: decimal degrees
	Description: &lt;p&gt;Sampling latitude, south is negative&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948759.rdf
	Name: longitude
	Units: decimal degrees
	Description: &lt;p&gt;Sampling longitude, west is negative&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948760.rdf
	Name: Duplicate
	Units: unitless
	Description: &lt;p&gt;Duplicate number: 1 or 2&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948761.rdf
	Name: Total_Air_Volume_L
	Units: liter (L)
	Description: &lt;p&gt;Total air volume during the sampling in liters&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948762.rdf
	Name: TotalAirVolume_m3
	Units: cubmic meters (m3)
	Description: &lt;p&gt;Total air volume during the sampling in cubic meters&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948763.rdf
	Name: ParticleWeight_mg
	Units: miligrams (mg)
	Description: &lt;p&gt;Atmospheric particulates weight of each samples&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948764.rdf
	Name: TOC_percent
	Units: percentage (%)
	Description: &lt;p&gt;Total organic carbon (TOC)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948765.rdf
	Name: TN_percent
	Units: percentage (%)
	Description: &lt;p&gt;inorganic + organic N&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948766.rdf
	Name: C_N_Ratio
	Units: unitless
	Description: &lt;p&gt;Carbon to nitrogen ratio&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948767.rdf
	Name: Carbon13_12_Ratio
	Units: parts per thousand (permil) (‰)
	Description: &lt;p&gt;Carbon isotope ratio (13C/12C)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948768.rdf
	Name: Delta15N_Nitrate
	Units: parts per thousand (permil) (‰)
	Description: &lt;p&gt;Nitrogen isotope ratio (15N/14N) of atmospheric nitrate (NO3-).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948769.rdf
	Name: Delta15N_NH4
	Units: parts per thousand (permil) (‰)
	Description: &lt;p&gt;Nitrogen isotope ratio (15N/14N) of atmospheric ammonium (NH4+).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948770.rdf
	Name: Delta18Oxygen_Nitrate
	Units: parts per thousand (permil) (‰)
	Description: &lt;p&gt;Oxygen isotopic ratio (18O/16O) of atmospheric nitrate (NO3-)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/948771.rdf
	Name: Delta17O_Nitrate
	Units: parts per thousand (permil) (‰)
	Description: &lt;p&gt;Measured isotope value of atmospheric nitrate (NO3-)&lt;/p&gt; 
</gco:CharacterString>
          </gmd:otherCitationDetails>
        </gmd:CI_Citation>
      </gmd:featureCatalogueCitation>
      <gmd:featureCatalogueCitation>
        <gmd:CI_Citation>
          <gmd:title>
            <gco:CharacterString>GB/NERC/BODC &gt; British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom</gco:CharacterString>
          </gmd:title>
          <gmd:date gco:nilReason="unknown"/>
          <gmd:citedResponsibleParty xlink:href="https://data.noaa.gov/docucomp/3D8FE2C9DA324D40939C8D007587E011" xlink:title="GB/NERC/BODC &gt; British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom"/>
          <gmd:otherCitationDetails>
            <gco:CharacterString>
            </gco:CharacterString>
          </gmd:otherCitationDetails>
        </gmd:CI_Citation>
      </gmd:featureCatalogueCitation>
    </gmd:MD_FeatureCatalogueDescription>
  </gmd:contentInfo>
  <gmd:distributionInfo>
    <gmd:MD_Distribution>
      <gmd:distributor>
        <gmd:MD_Distributor>
          <gmd:distributorContact>
            <gmd:CI_ResponsibleParty>
  <gmd:organisationName>
    <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/affiliation/191.rdf" xlink:actuate="onRequest">Biological and Chemical Oceanography Data Management Office (BCO-DMO)</gmx:Anchor>
  </gmd:organisationName>
  <gmd:contactInfo>
    <gmd:CI_Contact>
		  <gmd:phone>
		    <gmd:CI_Telephone>
				  <gmd:voice>
				    <gco:CharacterString>Unavailable</gco:CharacterString>
				  </gmd:voice>
				  <gmd:facsimile>
				    <gco:CharacterString>508-289-2009</gco:CharacterString>
				  </gmd:facsimile>
				</gmd:CI_Telephone>
		  </gmd:phone>
		  <gmd:address>
		    <gmd:CI_Address>
				  <gmd:deliveryPoint>
				    <gco:CharacterString>WHOI MS#36</gco:CharacterString>
				  </gmd:deliveryPoint>
				  <gmd:city>
				    <gco:CharacterString>Woods Hole</gco:CharacterString>
				  </gmd:city>
				  <gmd:administrativeArea>
				    <gco:CharacterString>MA</gco:CharacterString>
				  </gmd:administrativeArea>
				  <gmd:postalCode>
				    <gco:CharacterString>02543</gco:CharacterString>
				  </gmd:postalCode>
				  <gmd:country>
				    <gco:CharacterString>USA</gco:CharacterString>
				  </gmd:country>
				  <gmd:electronicMailAddress>
				    <gco:CharacterString>info@bco-dmo.org</gco:CharacterString>
				  </gmd:electronicMailAddress>
		    </gmd:CI_Address>
		  </gmd:address>
      <gmd:onlineResource>
          <gmd:CI_OnlineResource>
            <gmd:linkage>
              <gmd:URL>http://www.bco-dmo.org</gmd:URL>
            </gmd:linkage>
          </gmd:CI_OnlineResource>
        </gmd:onlineResource>
		  <gmd:hoursOfService>
        <gco:CharacterString>Monday - Friday 8:00am - 5:00pm</gco:CharacterString>
      </gmd:hoursOfService>
		  <gmd:contactInstructions>
		    <gco:CharacterString>For questions regarding this resource, please contact BCO-DMO via the email address provided.</gco:CharacterString>
		  </gmd:contactInstructions>
		</gmd:CI_Contact>
  </gmd:contactInfo>
  <gmd:role>
    <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="pointOfContact"  codeSpace="007">pointOfContact</gmd:CI_RoleCode>
  </gmd:role>
</gmd:CI_ResponsibleParty>
          </gmd:distributorContact>
        </gmd:MD_Distributor>
      </gmd:distributor>
      <gmd:transferOptions>
          <gmd:MD_DigitalTransferOptions>
          <gmd:transferSize>
              <gco:Real>3452</gco:Real>
            </gmd:transferSize><gmd:onLine>
            <gmd:CI_OnlineResource>
              <gmd:linkage><gmd:URL>https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/03660d02-59e3-46ce-9dd9-475fab7246be/content</gmd:URL></gmd:linkage>              <gmd:name>
                <gco:CharacterString></gco:CharacterString>
              </gmd:name><gmd:function>
                <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>
          </gmd:onLine>
        </gmd:MD_DigitalTransferOptions>
      </gmd:transferOptions>
              <gmd:transferOptions>
        <gmd:MD_DigitalTransferOptions>
        <gmd:onLine>
            <gmd:CI_OnlineResource>
              <gmd:linkage>
                <gmd:URL>https://doi.org/10.26008/1912/bco-dmo.947080.1</gmd:URL>
              </gmd:linkage>
              <gmd:function>
                <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>
          </gmd:onLine>
        <gmd:offLine>
            <gmd:MD_Medium>
              <gmd:name>
                 <gmd:MD_MediumNameCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_MediumNameCode" codeListValue="onLine">onLine</gmd:MD_MediumNameCode>
              </gmd:name>
            </gmd:MD_Medium>
          </gmd:offLine>
        </gmd:MD_DigitalTransferOptions>
      </gmd:transferOptions>
    </gmd:MD_Distribution>
  </gmd:distributionInfo>
  <gmd:dataQualityInfo>
    <gmd:DQ_DataQuality>
      <gmd:scope>
        <gmd:DQ_Scope>
          <gmd:level>
            <gmd:MD_ScopeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset">dataset</gmd:MD_ScopeCode>
          </gmd:level>
        </gmd:DQ_Scope>
      </gmd:scope>
            <gmd:lineage>
        <gmd:LI_Lineage>
          <gmd:processStep xlink:title="Methods and Sampling">
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>&amp;lt;p&amp;gt;On-ship aerosol sampling was conducted on the R/V Dong Fang Hong-3 during a cruise to the western NP from October 31 to December 1, 2019. We used two portable aerosol particle samplers (model 2030, Qingdao Laoying Environmental Technology Co.) with a filter size of 9 cm O.D. The GF/F filters were precombusted (550 °C, 4 h) before used, and the sampling period was 18 to 72 h for each filter with an air ﬂow rate of 100 L/min based on the cruise track. A total of 16 samples were collected during the cruise.&amp;lt;/p&amp;gt;</gco:CharacterString>
              </gmd:description>
              <gmd:source>
                <gmd:LI_Source>
                  <gmd:sourceCitation>
                    <gmd:CI_Citation>
                      <gmd:title>
                        <gco:CharacterString>Specified by the Principal Investigator(s)</gco:CharacterString>
                      </gmd:title>
                      <gmd:date gco:nilReason="unknown"/>
                    </gmd:CI_Citation>
                  </gmd:sourceCitation>
                </gmd:LI_Source>
              </gmd:source>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep xlink:title="Data Processing Description">
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>&amp;lt;p&amp;gt;For the aerosol samples, we measured the concentrations of aerosol particulate OC (POC), total nitrogen (TN), and carbon isotope (&amp;lt;sup&amp;gt;13&amp;lt;/sup&amp;gt;C and &amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;C) compositions of aerosol OC. All measurements were conducted at the Center for Isotope Geochemistry and Geochronology (CIGG) at the Qingdao National Laboratory for Marine Science and&amp;lt;br /&amp;gt;
Technology (QNLM) in Qingdao, China. For atmospheric POC measurements, a cut piece of filter containing particles was acidified first with 10% high-purity HCl to remove inorganic carbon and then dried at 50 °C. Concentrations of POC and TN were measured using an elemental analyzer (Elementar vario Isotope select) with analytical standard deviations of ±0.03% for OC, and ±0.04% for TN (n = 6). The δ&amp;lt;sup&amp;gt;13&amp;lt;/sup&amp;gt;C values of POC were measured using a Thermo Delta V advantage isotope ratio mass spectrometer coupled with an Elemental Analyzer-IsoLink CN. Values of δ&amp;lt;sup&amp;gt;13&amp;lt;/sup&amp;gt;C were reported in ‰ relative to &amp;lt;sup&amp;gt;13&amp;lt;/sup&amp;gt;C standards (IAEA-CH-3, cellulose, and IAEA-600 caﬀeine), and the analytic precision was ≤0.2‰ (n = 10). For POC &amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;C measurements, the pretreated flters were placed separately in double quartz tubes (precombusted at 850 °C for 2 h) with CuO and Ag wires added. The tubes were then evacuated on a vacuum line, ﬂame sealed, and combusted at 850 °C for 2 h (Druffel et al., 1992). CO&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; resulting from POC oxidation was collected cryogenically and quantifed monometrically on a vacuum line. The purified CO&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; was converted to graphite using the closed tube iron reduction method (Xu et al., 2007; Walker et al., 2019) and &amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;C was measured by accelerator mass spectrometry (AMS, NEC 0.5MV XCAMS). Δ&amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;C results were reported, and conventional radiocarbon ages [years before present (BP)] were calculated based on the study by Stuiver and Polach (1977).&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Nitrogen (&amp;lt;sup&amp;gt;15&amp;lt;/sup&amp;gt;N /&amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;N) and oxygen (&amp;lt;sup&amp;gt;18&amp;lt;/sup&amp;gt;O /&amp;lt;sup&amp;gt;16&amp;lt;/sup&amp;gt;O) isotope analyses of nitrate were conducted at the Department of Earth, Environmental, and Planetary Sciences at Brown University in Providence, RI (USA). After the frozen samples were received at Brown University, a 5 × 5 cm square was cut from the center of the filter at room temperature and extracted in a pre-cleaned bottle with ~100 mL of MQ water (exact amounts were recorded via weight) and then sonicated for 1 h. After sonication, the filters were removed, and the samples were frozen at -20 ◦C until further analyses.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;The denitrifier method (Casciotti et al., 2002; Sigman et al., 2001) was used to complete nitrate (&amp;lt;sup&amp;gt;15&amp;lt;/sup&amp;gt;N /&amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;N) and oxygen (&amp;lt;sup&amp;gt;18&amp;lt;/sup&amp;gt;O /&amp;lt;sup&amp;gt;16&amp;lt;/sup&amp;gt;O) isotope analyses via nitrous oxide on a continuous flow isotope ratio mass spectrometer. Values were reported in ‰ relative to standards.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;amp;nbsp;&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Instruments:&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Portable aerosol particle samplers: aerosol samples were collected with portable aerosol particle samplers (model 2030, Qingdao Laoying Environmental Technology Co.) with a filter size of 9 cm O.D.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Elemental analyzer: the concentrations of POC and TN were measured using an elemental analyzer (Elementar vario Isotope select).&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Thermo Delta V mass spectrometer: the δ&amp;lt;sup&amp;gt;13&amp;lt;/sup&amp;gt;C values of POC were measured using a Therm Delta V advantage isotope ratio mass spectrometer coupled with an Elemental Analyzer-IsoLink CN.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Thermo Delta V Plus Isotope Ratio Mass Spectrometer: used in continuous flow mode for ammonium, nitrate, and oxygen isotope analyses.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Accelerator mass spectrometry: the Δ&amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;C values of POC were measured by accelerator mass spectrometry (AMS, NEC 0.5MV XCAMS).&amp;lt;/p&amp;gt;</gco:CharacterString>
              </gmd:description>
              <gmd:source>
                <gmd:LI_Source>
                  <gmd:sourceCitation>
                    <gmd:CI_Citation>
                      <gmd:title>
                        <gco:CharacterString>Specified by the Principal Investigator(s)</gco:CharacterString>
                      </gmd:title>
                      <gmd:date gco:nilReason="unknown"/>
                    </gmd:CI_Citation>
                  </gmd:sourceCitation>
                </gmd:LI_Source>
              </gmd:source>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
        <gmd:processStep xlink:title="BCO-DMO Data Processing Description">
              <gmd:LI_ProcessStep>
                <gmd:description>
                  <gco:CharacterString>* Adjusted parameter names to comply with database requirements
* Converted sampling latitude and longitude notation from decimal, minute, seconds to decimal degrees. Rounded these fields to 5 decimals
* Converted date to ISO notation (Y-m-d)
* Merged sampling date and time columns and created DateTime variable in ISO format</gco:CharacterString>
                </gmd:description>
                <gmd:source>
                  <gmd:LI_Source>
                    <gmd:sourceCitation>
                      <gmd:CI_Citation>
                        <gmd:title>
                          <gco:CharacterString>Specified by BCO-DMO Data Managers</gco:CharacterString>
                        </gmd:title>
                        <gmd:date gco:nilReason="unknown"/>
                      </gmd:CI_Citation>
                    </gmd:sourceCitation>
                  </gmd:LI_Source>
                </gmd:source>
              </gmd:LI_ProcessStep>
            </gmd:processStep>
          </gmd:LI_Lineage>
      </gmd:lineage>
   </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
  <gmd:metadataMaintenance>
    <gmd:MD_MaintenanceInformation>
      <gmd:maintenanceAndUpdateFrequency>
        <gmd:MD_MaintenanceFrequencyCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode" codeListValue="asNeeded" codeSpace="009">asNeeded</gmd:MD_MaintenanceFrequencyCode>
      </gmd:maintenanceAndUpdateFrequency>
      <gmd:maintenanceNote>
        <gco:CharacterString>7.x-1.1</gco:CharacterString>
      </gmd:maintenanceNote>
      <gmd:contact>
        <gmd:CI_ResponsibleParty>
  <gmd:organisationName>
    <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/affiliation/191.rdf" xlink:actuate="onRequest">Biological and Chemical Oceanography Data Management Office (BCO-DMO)</gmx:Anchor>
  </gmd:organisationName>
  <gmd:contactInfo>
    <gmd:CI_Contact>
		  <gmd:phone>
		    <gmd:CI_Telephone>
				  <gmd:voice>
				    <gco:CharacterString>Unavailable</gco:CharacterString>
				  </gmd:voice>
				  <gmd:facsimile>
				    <gco:CharacterString>508-289-2009</gco:CharacterString>
				  </gmd:facsimile>
				</gmd:CI_Telephone>
		  </gmd:phone>
		  <gmd:address>
		    <gmd:CI_Address>
				  <gmd:deliveryPoint>
				    <gco:CharacterString>WHOI MS#36</gco:CharacterString>
				  </gmd:deliveryPoint>
				  <gmd:city>
				    <gco:CharacterString>Woods Hole</gco:CharacterString>
				  </gmd:city>
				  <gmd:administrativeArea>
				    <gco:CharacterString>MA</gco:CharacterString>
				  </gmd:administrativeArea>
				  <gmd:postalCode>
				    <gco:CharacterString>02543</gco:CharacterString>
				  </gmd:postalCode>
				  <gmd:country>
				    <gco:CharacterString>USA</gco:CharacterString>
				  </gmd:country>
				  <gmd:electronicMailAddress>
				    <gco:CharacterString>info@bco-dmo.org</gco:CharacterString>
				  </gmd:electronicMailAddress>
		    </gmd:CI_Address>
		  </gmd:address>
      <gmd:onlineResource>
          <gmd:CI_OnlineResource>
            <gmd:linkage>
              <gmd:URL>http://www.bco-dmo.org</gmd:URL>
            </gmd:linkage>
          </gmd:CI_OnlineResource>
        </gmd:onlineResource>
		  <gmd:hoursOfService>
        <gco:CharacterString>Monday - Friday 8:00am - 5:00pm</gco:CharacterString>
      </gmd:hoursOfService>
		  <gmd:contactInstructions>
		    <gco:CharacterString>For questions regarding this resource, please contact BCO-DMO via the email address provided.</gco:CharacterString>
		  </gmd:contactInstructions>
		</gmd:CI_Contact>
  </gmd:contactInfo>
  <gmd:role>
    <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="pointOfContact"  codeSpace="007">pointOfContact</gmd:CI_RoleCode>
  </gmd:role>
</gmd:CI_ResponsibleParty>
      </gmd:contact>
    </gmd:MD_MaintenanceInformation>
  </gmd:metadataMaintenance>
  <gmi:acquisitionInformation>
    <gmi:MI_AcquisitionInformation>
    <gmi:instrument>
        <gmi:MI_Instrument>
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/527.rdf" xlink:title="Accelerator Mass Spectrometer" xlink:actuate="onRequest">NEC 0.5MV XCAMS</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>NEC 0.5MV XCAMS</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>PI Supplied Instrument Name: NEC 0.5MV XCAMS PI Supplied Instrument Description:Accelerator mass spectrometry: the Δ14C values of POC were measured by accelerator mass spectrometry (AMS, NEC 0.5MV XCAMS). Instrument Name: Accelerator Mass Spectrometer Instrument Short Name:AMS   Instrument Description: An AMS measures &quot;long-lived radionuclides that occur naturally in our environment. AMS uses a particle accelerator in conjunction with ion sources, large magnets, and detectors to separate out interferences and count single atoms in the presence of 1x1015 (a thousand million million) stable atoms, measuring the mass-to-charge ratio of the products of sample molecule disassociation, atom ionization and ion acceleration.&quot; AMS permits ultra low-level measurement of compound concentrations and isotope ratios that traditional alpha-spectrometry cannot provide. More from Purdue University: http://www.physics.purdue.edu/primelab/introduction/ams.html Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB17/</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument>
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/691.rdf" xlink:title="Aerosol Sampler" xlink:actuate="onRequest">Portable aerosol particle samplers - model 2030, Qingdao Laoying Environmental Technology Co.</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>Portable aerosol particle samplers - model 2030, Qingdao Laoying Environmental Technology Co.</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>PI Supplied Instrument Name: Portable aerosol particle samplers - model 2030, Qingdao Laoying Environmental Technology Co. PI Supplied Instrument Description:Portable aerosol particle samplers: aerosol samples were collected with portable aerosol particle samplers (model 2030, Qingdao Laoying Environmental Technology Co.) with a filter size of 9 cm O.D. Instrument Name: Aerosol Sampler Instrument Short Name:   Instrument Description: A device that collects a sample of aerosol (dry particles or liquid droplets) from the atmosphere. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/13/</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument>
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/546339.rdf" xlink:title="Elemental Analyzer" xlink:actuate="onRequest">Elementar vario Isotope select</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>Elementar vario Isotope select</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>PI Supplied Instrument Name: Elementar vario Isotope select PI Supplied Instrument Description:Elemental analyzer: the concentrations of POC and TN were measured using an elemental analyzer (Elementar vario Isotope select). Instrument Name: Elemental Analyzer Instrument Short Name:   Instrument Description: Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument>
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/469.rdf" xlink:title="Isotope-ratio Mass Spectrometer" xlink:actuate="onRequest">Thermo Delta V Plus Isotope Ratio Mass Spectrometer</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>Thermo Delta V Plus Isotope Ratio Mass Spectrometer</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>PI Supplied Instrument Name: Thermo Delta V Plus Isotope Ratio Mass Spectrometer PI Supplied Instrument Description:Thermo Delta V Plus Isotope Ratio Mass Spectrometer: used in continuous flow mode for ammonium, nitrate, and oxygen isotope analyses. Instrument Name: Isotope-ratio Mass Spectrometer Instrument Short Name:IR Mass Spec; IRMS   Instrument Description: The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument>
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/685.rdf" xlink:title="Mass Spectrometer" xlink:actuate="onRequest">Therm Delta V advantage isotope ratio mass spectrometer coupled with an Elemental Analyzer-IsoLink CN</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>Therm Delta V advantage isotope ratio mass spectrometer coupled with an Elemental Analyzer-IsoLink CN</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>PI Supplied Instrument Name: Therm Delta V advantage isotope ratio mass spectrometer coupled with an Elemental Analyzer-IsoLink CN PI Supplied Instrument Description:Thermo Delta V mass spectrometer: the δ13C values of POC were measured using a Therm Delta V advantage isotope ratio mass spectrometer coupled with an Elemental Analyzer-IsoLink CN. Instrument Name: Mass Spectrometer Instrument Short Name:Mass Spec   Instrument Description: General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      </gmi:MI_AcquisitionInformation>
  </gmi:acquisitionInformation>
</gmi:MI_Metadata>
