<?xml version="1.0" ?><?xml-stylesheet type="text/xsl" href="/static/oaitohtml.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd">
  <responseDate>2026-05-03T01:15:01Z</responseDate>
  <request verb="GetRecord" metadataPrefix="datacite" identifier="doi:10.18160/bh5c-k4g4">https://oai.datacite.org/oai</request>
  <GetRecord>
    <record>
      <header>
        <identifier>doi:10.18160/bh5c-k4g4</identifier>
        <datestamp>2026-01-22T12:30:36Z</datestamp>
        <setSpec>MVIY</setSpec>
        <setSpec>SND.ICOS</setSpec>
      </header>
      <metadata>
        <resource xmlns="http://datacite.org/schema/kernel-4" xsi:schemaLocation="http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4/metadata.xsd">
  <identifier identifierType="DOI">10.18160/BH5C-K4G4</identifier>
  <creators>
    <creator>
      <creatorName nameType="Organizational">ICOS RI</creatorName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Naus, Stijn</creatorName>
      <givenName>Stijn</givenName>
      <familyName>Naus</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-4879-9379</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Adcock, Karina</creatorName>
      <givenName>Karina</givenName>
      <familyName>Adcock</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-8224-5399</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Arnold, Sabrina</creatorName>
      <givenName>Sabrina</givenName>
      <familyName>Arnold</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-6797-1715</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Barningham, Thomas</creatorName>
      <givenName>Thomas</givenName>
      <familyName>Barningham</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Biermann, Tobias</creatorName>
      <givenName>Tobias</givenName>
      <familyName>Biermann</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-8538-1495</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Bäni, Lukas</creatorName>
      <givenName>Lukas</givenName>
      <familyName>Bäni</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Charrondiere, Claudine</creatorName>
      <givenName>Claudine</givenName>
      <familyName>Charrondiere</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Conen, Franz</creatorName>
      <givenName>Franz</givenName>
      <familyName>Conen</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-4821-5775</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Conil, Sébastien</creatorName>
      <givenName>Sébastien</givenName>
      <familyName>Conil</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-6767-821X</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Delmotte, Marc</creatorName>
      <givenName>Marc</givenName>
      <familyName>Delmotte</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-3805-818X</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Emmenegger, Lukas</creatorName>
      <givenName>Lukas</givenName>
      <familyName>Emmenegger</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-9812-3986</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Eritt, Markus</creatorName>
      <givenName>Markus</givenName>
      <familyName>Eritt</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Etchells, Alex</creatorName>
      <givenName>Alex</givenName>
      <familyName>Etchells</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Fleming, Leigh</creatorName>
      <givenName>Leigh</givenName>
      <familyName>Fleming</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-3114-8740</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Forster, Grant</creatorName>
      <givenName>Grant</givenName>
      <familyName>Forster</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-1783-9307</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Friedli, Julia</creatorName>
      <givenName>Julia</givenName>
      <familyName>Friedli</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Frumau, Arnoud</creatorName>
      <givenName>Arnoud</givenName>
      <familyName>Frumau</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-5940-0285</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Fuente-Lastra, Marta</creatorName>
      <givenName>Marta</givenName>
      <familyName>Fuente-Lastra</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Hanuš, Vlastimil</creatorName>
      <givenName>Vlastimil</givenName>
      <familyName>Hanuš</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Harris, Eliza</creatorName>
      <givenName>Eliza</givenName>
      <familyName>Harris</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Hatakka, Juha</creatorName>
      <givenName>Juha</givenName>
      <familyName>Hatakka</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Heliasz, Michal</creatorName>
      <givenName>Michal</givenName>
      <familyName>Heliasz</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-2635-9604</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Helle, Julie</creatorName>
      <givenName>Julie</givenName>
      <familyName>Helle</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Hensen, Arjan</creatorName>
      <givenName>Arjan</givenName>
      <familyName>Hensen</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-8467-7785</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Hermansen, Ove</creatorName>
      <givenName>Ove</givenName>
      <familyName>Hermansen</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-7353-057X</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Hewitt, Marica</creatorName>
      <givenName>Marica</givenName>
      <familyName>Hewitt</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Kazan, Victor</creatorName>
      <givenName>Victor</givenName>
      <familyName>Kazan</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Keeling, Ralph</creatorName>
      <givenName>Ralph</givenName>
      <familyName>Keeling</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-9749-2253</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Keronen, Petri</creatorName>
      <givenName>Petri</givenName>
      <familyName>Keronen</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Kneuer, Tobias</creatorName>
      <givenName>Tobias</givenName>
      <familyName>Kneuer</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-5621-3780</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Kolari, Pasi</creatorName>
      <givenName>Pasi</givenName>
      <familyName>Kolari</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Komínková, Kateřina</creatorName>
      <givenName>Kateřina</givenName>
      <familyName>Komínková</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-4001-9999</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Kozlova, Elena</creatorName>
      <givenName>Elena</givenName>
      <familyName>Kozlova</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Kubistin, Dagmar</creatorName>
      <givenName>Dagmar</givenName>
      <familyName>Kubistin</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-5467-9309</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Langrene, Laurent</creatorName>
      <givenName>Laurent</givenName>
      <familyName>Langrene</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Larmanou, Eric</creatorName>
      <givenName>Eric</givenName>
      <familyName>Larmanou</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-6427-8859</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Laurent, Olivier</creatorName>
      <givenName>Olivier</givenName>
      <familyName>Laurent</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-2029-6262</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Legendre, Virgile</creatorName>
      <givenName>Virgile</givenName>
      <familyName>Legendre</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Lehner, Irene</creatorName>
      <givenName>Irene</givenName>
      <familyName>Lehner</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-2263-6734</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Leuenberger, Markus</creatorName>
      <givenName>Markus</givenName>
      <familyName>Leuenberger</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-4299-6793</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Levula, Janne</creatorName>
      <givenName>Janne</givenName>
      <familyName>Levula</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Lindauer, Matthias</creatorName>
      <givenName>Matthias</givenName>
      <familyName>Lindauer</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-9274-8750</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Lopez, Dylan</creatorName>
      <givenName>Dylan</givenName>
      <familyName>Lopez</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Lopez, Morgan</creatorName>
      <givenName>Morgan</givenName>
      <familyName>Lopez</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-1725-3410</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Luijkx, Ingrid</creatorName>
      <givenName>Ingrid</givenName>
      <familyName>Luijkx</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-3990-6737</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Lund Myhre, Cathrine</creatorName>
      <givenName>Cathrine</givenName>
      <familyName>Lund Myhre</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-3587-5926</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Lunder, Chris</creatorName>
      <givenName>Chris</givenName>
      <familyName>Lunder</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-7663-3192</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">MacDonald, Andrew</creatorName>
      <givenName>Andrew</givenName>
      <familyName>MacDonald</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Mammarella, Ivan</creatorName>
      <givenName>Ivan</givenName>
      <familyName>Mammarella</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-8516-3356</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Mandrick, Zineb</creatorName>
      <givenName>Zineb</givenName>
      <familyName>Mandrick</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Manning, Alistair</creatorName>
      <givenName>Alistair</givenName>
      <familyName>Manning</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Marek, Michal V.</creatorName>
      <givenName>Michal V.</givenName>
      <familyName>Marek</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-3349-8987</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Marklund, Per</creatorName>
      <givenName>Per</givenName>
      <familyName>Marklund</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-7264-5498</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Meijer, Harro A.J.</creatorName>
      <givenName>Harro A.J.</givenName>
      <familyName>Meijer</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-8744-5632</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Morgan, Eric</creatorName>
      <givenName>Eric</givenName>
      <familyName>Morgan</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Molder, Meelis</creatorName>
      <givenName>Meelis</givenName>
      <familyName>Molder</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-6767-3195</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Müller-Williams, Jennifer</creatorName>
      <givenName>Jennifer</givenName>
      <familyName>Müller-Williams</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-4840-7729</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Nguyen, Linh N.T.</creatorName>
      <givenName>Linh N.T.</givenName>
      <familyName>Nguyen</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-0763-9387</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Ottosson-Löfvenius, Mikaell</creatorName>
      <givenName>Mikaell</givenName>
      <familyName>Ottosson-Löfvenius</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Pickers, Penelope</creatorName>
      <givenName>Penelope</givenName>
      <familyName>Pickers</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-1923-5163</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Platt, Stephen Matthew</creatorName>
      <givenName>Stephen Matthew</givenName>
      <familyName>Platt</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-8439-6633</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Plaß-Dülmer, Christian</creatorName>
      <givenName>Christian</givenName>
      <familyName>Plaß-Dülmer</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Ramonet, Michel</creatorName>
      <givenName>Michel</givenName>
      <familyName>Ramonet</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-1157-1186</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Rigouleau, Louis-Jeremy</creatorName>
      <givenName>Louis-Jeremy</givenName>
      <familyName>Rigouleau</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Roulet, Yves-Alain</creatorName>
      <givenName>Yves-Alain</givenName>
      <familyName>Roulet</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Schumacher, Marcus</creatorName>
      <givenName>Marcus</givenName>
      <familyName>Schumacher</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Smith, Paul</creatorName>
      <givenName>Paul</givenName>
      <familyName>Smith</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-3773-1419</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Steger, David</creatorName>
      <givenName>David</givenName>
      <familyName>Steger</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Steinbacher, Martin</creatorName>
      <givenName>Martin</givenName>
      <familyName>Steinbacher</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-7195-8115</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Taipale, Risto</creatorName>
      <givenName>Risto</givenName>
      <familyName>Taipale</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-4225-256X</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Vermeulen, Alex</creatorName>
      <givenName>Alex</givenName>
      <familyName>Vermeulen</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-8158-8787</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Vítková, Gabriela</creatorName>
      <givenName>Gabriela</givenName>
      <familyName>Vítková</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-1022-0256</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Weyrauch, Dietmar</creatorName>
      <givenName>Dietmar</givenName>
      <familyName>Weyrauch</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">Wilson, Philip</creatorName>
      <givenName>Philip</givenName>
      <familyName>Wilson</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-9293-3980</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Yver-Kwok, Camille</creatorName>
      <givenName>Camille</givenName>
      <familyName>Yver-Kwok</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-2181-2863</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">Zwerschke, Elena</creatorName>
      <givenName>Elena</givenName>
      <familyName>Zwerschke</familyName>
    </creator>
    <creator>
      <creatorName nameType="Personal">de Beijl, Lois</creatorName>
      <givenName>Lois</givenName>
      <familyName>de Beijl</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0009-0000-7502-6342</nameIdentifier>
    </creator>
    <creator>
      <creatorName nameType="Personal">van den Bulk, Pim</creatorName>
      <givenName>Pim</givenName>
      <familyName>van den Bulk</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-5393-7898</nameIdentifier>
    </creator>
  </creators>
  <titles>
    <title>Obspack compilation of atmospheric oxygen and carbon dioxide data from ICOS and non-ICOS stations for the period 1989-2025</title>
  </titles>
  <publisher>ICOS ERIC -- Carbon Portal</publisher>
  <publicationYear>2025</publicationYear>
  <resourceType resourceTypeGeneral="Dataset">zip archive</resourceType>
  <subjects>
    <subject>Atmospheric Potential Oxygen</subject>
    <subject>Climate Change</subject>
    <subject>Global Carbon Balance</subject>
    <subject>Troposphere: composition and chemistry</subject>
    <subject>deltaO2N2 in dry air</subject>
    <subject>mole fraction of CO2 in dry air</subject>
  </subjects>
  <contributors>
    <contributor contributorType="Distributor">
      <contributorName nameType="Organizational">ICOS RI</contributorName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Naus, Stijn</contributorName>
      <givenName>Stijn</givenName>
      <familyName>Naus</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-4879-9379</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Adcock, Karina</contributorName>
      <givenName>Karina</givenName>
      <familyName>Adcock</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-8224-5399</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Arnold, Sabrina</contributorName>
      <givenName>Sabrina</givenName>
      <familyName>Arnold</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-6797-1715</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Barningham, Thomas</contributorName>
      <givenName>Thomas</givenName>
      <familyName>Barningham</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Biermann, Tobias</contributorName>
      <givenName>Tobias</givenName>
      <familyName>Biermann</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-8538-1495</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Bäni, Lukas</contributorName>
      <givenName>Lukas</givenName>
      <familyName>Bäni</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Charrondiere, Claudine</contributorName>
      <givenName>Claudine</givenName>
      <familyName>Charrondiere</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Conen, Franz</contributorName>
      <givenName>Franz</givenName>
      <familyName>Conen</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-4821-5775</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Conil, Sébastien</contributorName>
      <givenName>Sébastien</givenName>
      <familyName>Conil</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-6767-821X</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Delmotte, Marc</contributorName>
      <givenName>Marc</givenName>
      <familyName>Delmotte</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-3805-818X</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Emmenegger, Lukas</contributorName>
      <givenName>Lukas</givenName>
      <familyName>Emmenegger</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-9812-3986</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Eritt, Markus</contributorName>
      <givenName>Markus</givenName>
      <familyName>Eritt</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Etchells, Alex</contributorName>
      <givenName>Alex</givenName>
      <familyName>Etchells</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Fleming, Leigh</contributorName>
      <givenName>Leigh</givenName>
      <familyName>Fleming</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-3114-8740</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Forster, Grant</contributorName>
      <givenName>Grant</givenName>
      <familyName>Forster</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-1783-9307</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Friedli, Julia</contributorName>
      <givenName>Julia</givenName>
      <familyName>Friedli</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Frumau, Arnoud</contributorName>
      <givenName>Arnoud</givenName>
      <familyName>Frumau</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-5940-0285</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Fuente-Lastra, Marta</contributorName>
      <givenName>Marta</givenName>
      <familyName>Fuente-Lastra</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Hanuš, Vlastimil</contributorName>
      <givenName>Vlastimil</givenName>
      <familyName>Hanuš</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Harris, Eliza</contributorName>
      <givenName>Eliza</givenName>
      <familyName>Harris</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Hatakka, Juha</contributorName>
      <givenName>Juha</givenName>
      <familyName>Hatakka</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Heliasz, Michal</contributorName>
      <givenName>Michal</givenName>
      <familyName>Heliasz</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-2635-9604</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Helle, Julie</contributorName>
      <givenName>Julie</givenName>
      <familyName>Helle</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Hensen, Arjan</contributorName>
      <givenName>Arjan</givenName>
      <familyName>Hensen</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-8467-7785</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Hermansen, Ove</contributorName>
      <givenName>Ove</givenName>
      <familyName>Hermansen</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-7353-057X</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Hewitt, Marica</contributorName>
      <givenName>Marica</givenName>
      <familyName>Hewitt</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Kazan, Victor</contributorName>
      <givenName>Victor</givenName>
      <familyName>Kazan</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Keeling, Ralph</contributorName>
      <givenName>Ralph</givenName>
      <familyName>Keeling</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-9749-2253</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Keronen, Petri</contributorName>
      <givenName>Petri</givenName>
      <familyName>Keronen</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Kneuer, Tobias</contributorName>
      <givenName>Tobias</givenName>
      <familyName>Kneuer</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-5621-3780</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Kolari, Pasi</contributorName>
      <givenName>Pasi</givenName>
      <familyName>Kolari</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Komínková, Kateřina</contributorName>
      <givenName>Kateřina</givenName>
      <familyName>Komínková</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-4001-9999</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Kozlova, Elena</contributorName>
      <givenName>Elena</givenName>
      <familyName>Kozlova</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Kubistin, Dagmar</contributorName>
      <givenName>Dagmar</givenName>
      <familyName>Kubistin</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-5467-9309</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Langrene, Laurent</contributorName>
      <givenName>Laurent</givenName>
      <familyName>Langrene</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Larmanou, Eric</contributorName>
      <givenName>Eric</givenName>
      <familyName>Larmanou</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-6427-8859</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Laurent, Olivier</contributorName>
      <givenName>Olivier</givenName>
      <familyName>Laurent</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-2029-6262</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Legendre, Virgile</contributorName>
      <givenName>Virgile</givenName>
      <familyName>Legendre</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Lehner, Irene</contributorName>
      <givenName>Irene</givenName>
      <familyName>Lehner</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-2263-6734</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Leuenberger, Markus</contributorName>
      <givenName>Markus</givenName>
      <familyName>Leuenberger</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-4299-6793</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Levula, Janne</contributorName>
      <givenName>Janne</givenName>
      <familyName>Levula</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Lindauer, Matthias</contributorName>
      <givenName>Matthias</givenName>
      <familyName>Lindauer</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-9274-8750</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Lopez, Dylan</contributorName>
      <givenName>Dylan</givenName>
      <familyName>Lopez</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Lopez, Morgan</contributorName>
      <givenName>Morgan</givenName>
      <familyName>Lopez</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-1725-3410</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Luijkx, Ingrid</contributorName>
      <givenName>Ingrid</givenName>
      <familyName>Luijkx</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-3990-6737</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Lund Myhre, Cathrine</contributorName>
      <givenName>Cathrine</givenName>
      <familyName>Lund Myhre</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-3587-5926</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Lunder, Chris</contributorName>
      <givenName>Chris</givenName>
      <familyName>Lunder</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-7663-3192</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">MacDonald, Andrew</contributorName>
      <givenName>Andrew</givenName>
      <familyName>MacDonald</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Mammarella, Ivan</contributorName>
      <givenName>Ivan</givenName>
      <familyName>Mammarella</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-8516-3356</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Mandrick, Zineb</contributorName>
      <givenName>Zineb</givenName>
      <familyName>Mandrick</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Manning, Alistair</contributorName>
      <givenName>Alistair</givenName>
      <familyName>Manning</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Marek, Michal V.</contributorName>
      <givenName>Michal V.</givenName>
      <familyName>Marek</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-3349-8987</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Marklund, Per</contributorName>
      <givenName>Per</givenName>
      <familyName>Marklund</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-7264-5498</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Meijer, Harro A.J.</contributorName>
      <givenName>Harro A.J.</givenName>
      <familyName>Meijer</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-8744-5632</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Morgan, Eric</contributorName>
      <givenName>Eric</givenName>
      <familyName>Morgan</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Molder, Meelis</contributorName>
      <givenName>Meelis</givenName>
      <familyName>Molder</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-6767-3195</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Müller-Williams, Jennifer</contributorName>
      <givenName>Jennifer</givenName>
      <familyName>Müller-Williams</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-4840-7729</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Nguyen, Linh N.T.</contributorName>
      <givenName>Linh N.T.</givenName>
      <familyName>Nguyen</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-0763-9387</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Ottosson-Löfvenius, Mikaell</contributorName>
      <givenName>Mikaell</givenName>
      <familyName>Ottosson-Löfvenius</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Pickers, Penelope</contributorName>
      <givenName>Penelope</givenName>
      <familyName>Pickers</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-1923-5163</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Platt, Stephen Matthew</contributorName>
      <givenName>Stephen Matthew</givenName>
      <familyName>Platt</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-8439-6633</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Plaß-Dülmer, Christian</contributorName>
      <givenName>Christian</givenName>
      <familyName>Plaß-Dülmer</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Ramonet, Michel</contributorName>
      <givenName>Michel</givenName>
      <familyName>Ramonet</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-1157-1186</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Rigouleau, Louis-Jeremy</contributorName>
      <givenName>Louis-Jeremy</givenName>
      <familyName>Rigouleau</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Roulet, Yves-Alain</contributorName>
      <givenName>Yves-Alain</givenName>
      <familyName>Roulet</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Schumacher, Marcus</contributorName>
      <givenName>Marcus</givenName>
      <familyName>Schumacher</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Smith, Paul</contributorName>
      <givenName>Paul</givenName>
      <familyName>Smith</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-3773-1419</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Steger, David</contributorName>
      <givenName>David</givenName>
      <familyName>Steger</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Steinbacher, Martin</contributorName>
      <givenName>Martin</givenName>
      <familyName>Steinbacher</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-7195-8115</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Taipale, Risto</contributorName>
      <givenName>Risto</givenName>
      <familyName>Taipale</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-4225-256X</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Vermeulen, Alex</contributorName>
      <givenName>Alex</givenName>
      <familyName>Vermeulen</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-8158-8787</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Vítková, Gabriela</contributorName>
      <givenName>Gabriela</givenName>
      <familyName>Vítková</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-1022-0256</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Weyrauch, Dietmar</contributorName>
      <givenName>Dietmar</givenName>
      <familyName>Weyrauch</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Wilson, Philip</contributorName>
      <givenName>Philip</givenName>
      <familyName>Wilson</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-9293-3980</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Yver-Kwok, Camille</contributorName>
      <givenName>Camille</givenName>
      <familyName>Yver-Kwok</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-2181-2863</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">Zwerschke, Elena</contributorName>
      <givenName>Elena</givenName>
      <familyName>Zwerschke</familyName>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">de Beijl, Lois</contributorName>
      <givenName>Lois</givenName>
      <familyName>de Beijl</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0009-0000-7502-6342</nameIdentifier>
    </contributor>
    <contributor contributorType="DataCollector">
      <contributorName nameType="Personal">van den Bulk, Pim</contributorName>
      <givenName>Pim</givenName>
      <familyName>van den Bulk</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-5393-7898</nameIdentifier>
    </contributor>
  </contributors>
  <dates>
    <date dateType="Submitted">2025-12-05</date>
    <date dateType="Issued">2025-12-05</date>
    <date dateType="Created">2025-12-04</date>
  </dates>
  <sizes/>
  <formats>
    <format>Arbitrary ZIP archive</format>
  </formats>
  <version>1.0</version>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode" rightsIdentifier="cc-by-4.0" rightsIdentifierScheme="SPDX" schemeURI="https://spdx.org/licenses/" xml:lang="eng">Creative Commons Attribution 4.0 International</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">This data package contains high accuracy CO2 dry air mole fractions and deltaO2N2 ratios in dry air from 34 ICOS and non-ICOS observatories. The package is the first release of the multispecies O2/CO2 Obspack data product (version 1.0), and is intended for use in carbon cycle research, e.g., inverse modeling or data comparison studies. Please report errors and send comments regarding this product to the ObsPack originators. Please read carefully the ObsPack Fair Use statement and cite appropriately. Metadata for this product are available at https://commons.datacite.org/doi.org/10.18160/M3VW-DRM5. Please visit http://www.gml.noaa.gov/ccgg/obspack/ for more information.</description>
    <description descriptionType="Other">Global O2 Obspack, produced by CP-NL</description>
  </descriptions>
  <geoLocations>
    <geoLocation>
      <geoLocationPlace>Global lat/lon box</geoLocationPlace>
      <geoLocationBox>
        <westBoundLongitude>-180.0</westBoundLongitude>
        <eastBoundLongitude>180.0</eastBoundLongitude>
        <southBoundLatitude>-90.0</southBoundLatitude>
        <northBoundLatitude>90.0</northBoundLatitude>
      </geoLocationBox>
    </geoLocation>
  </geoLocations>
</resource>
      </metadata>
    </record>
  </GetRecord>
</OAI-PMH>