<?xml version="1.0" encoding="UTF-8"?>
<gmd:MD_Metadata xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                 xmlns:gco="http://www.isotc211.org/2005/gco"
                 xmlns:gmd="http://www.isotc211.org/2005/gmd"
                 xmlns:srv="http://www.isotc211.org/2005/srv"
                 xmlns:gmx="http://www.isotc211.org/2005/gmx"
                 xmlns:gts="http://www.isotc211.org/2005/gts"
                 xmlns:gsr="http://www.isotc211.org/2005/gsr"
                 xmlns:gmi="http://www.isotc211.org/2005/gmi"
                 xmlns:gml="http://www.opengis.net/gml"
                 xmlns:xlink="http://www.w3.org/1999/xlink"
                 xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://www.isotc211.org/2005/gmx/gmx.xsd">
   <gmd:fileIdentifier>
      <gco:CharacterString>edu.ucar.opensky::articles:12672</gco:CharacterString>
   </gmd:fileIdentifier>
   <gmd:language>
      <gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639-2/"
                        codeListValue="eng; USA"/>
   </gmd:language>
   <gmd:characterSet>
      <gmd:MD_CharacterSetCode codeListValue="utf8"
                               codeList="http://www.isotc211.org/namespace/resources/codeList.xml#MD_CharacterSetCode"/>
   </gmd:characterSet>
   <gmd:hierarchyLevel>
      <gmd:MD_ScopeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#MD_ScopeCode"
                        codeListValue="document"/>
   </gmd:hierarchyLevel>
   <gmd:contact>
      <gmd:CI_ResponsibleParty>
         <gmd:organisationName>
            <gco:CharacterString>UCAR/NCAR - Library</gco:CharacterString>
         </gmd:organisationName>
         <gmd:positionName>
            <gco:CharacterString>OpenSky Support</gco:CharacterString>
         </gmd:positionName>
         <gmd:contactInfo>
            <gmd:CI_Contact>
               <gmd:address>
                  <gmd:CI_Address>
                     <gmd:deliveryPoint>
                        <gco:CharacterString>PO Box 3000</gco:CharacterString>
                     </gmd:deliveryPoint>
                     <gmd:city>
                        <gco:CharacterString>Boulder</gco:CharacterString>
                     </gmd:city>
                     <gmd:administrativeArea>
                        <gco:CharacterString>CO</gco:CharacterString>
                     </gmd:administrativeArea>
                     <gmd:postalCode>
                        <gco:CharacterString>80307-3000</gco:CharacterString>
                     </gmd:postalCode>
                     <gmd:electronicMailAddress>
                        <gco:CharacterString>opensky@ucar.edu</gco:CharacterString>
                     </gmd:electronicMailAddress>
                  </gmd:CI_Address>
               </gmd:address>
               <gmd:onlineResource>
                  <gmd:CI_OnlineResource>
                     <gmd:linkage>
                        <gmd:URL>http://opensky.ucar.edu/</gmd:URL>
                     </gmd:linkage>
                     <gmd:name>
                        <gco:CharacterString>homepage</gco:CharacterString>
                     </gmd:name>
                  </gmd:CI_OnlineResource>
               </gmd:onlineResource>
            </gmd:CI_Contact>
         </gmd:contactInfo>
         <gmd:role>
            <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="pointOfContact">pointOfContact</gmd:CI_RoleCode>
         </gmd:role>
      </gmd:CI_ResponsibleParty>
   </gmd:contact>
   <gmd:dateStamp>
      <gco:DateTime>2025-12-26T03:46:01.136462</gco:DateTime>
   </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:dataSetURI>
      <gco:CharacterString>https://n2t.org/ark:/85065/d7nv9k20</gco:CharacterString>
   </gmd:dataSetURI>
   <gmd:identificationInfo>
      <gmd:MD_DataIdentification>
         <gmd:citation>
            <gmd:CI_Citation>
               <gmd:title>
                  <gco:CharacterString>The role of negative COâ emissions for reaching 2Â°C -- insights from integrated assessment modelling</gco:CharacterString>
               </gmd:title>
               <gmd:date>
                  <gmd:CI_Date>
                     <gmd:date>
                        <gco:DateTime>2013-05-01T00:00:00Z</gco:DateTime>
                     </gmd:date>
                     <gmd:dateType>
                        <gmd:CI_DateTypeCode codeList="codeListLocation#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
                     </gmd:dateType>
                  </gmd:CI_Date>
               </gmd:date>
               <gmd:identifier>
                  <gmd:RS_Identifier>
                     <gmd:code>
                        <gco:CharacterString>https://n2t.org/ark:/85065/d7nv9k20</gco:CharacterString>
                     </gmd:code>
                  </gmd:RS_Identifier>
               </gmd:identifier>
               <gmd:identifier>
                  <gmd:RS_Identifier>
                     <gmd:code>
                        <gco:CharacterString>https://doi.org/10.1007/s10584-012-0680-5</gco:CharacterString>
                     </gmd:code>
                  </gmd:RS_Identifier>
               </gmd:identifier>
               <gmd:citedResponsibleParty>
                  <gmd:CI_ResponsibleParty>
                     <gmd:individualName>
                        <gco:CharacterString>Van Vuuren, D.</gco:CharacterString>
                     </gmd:individualName>
                     <gmd:role>
                        <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="author">author</gmd:CI_RoleCode>
                     </gmd:role>
                  </gmd:CI_ResponsibleParty>
               </gmd:citedResponsibleParty>
               <gmd:citedResponsibleParty>
                  <gmd:CI_ResponsibleParty>
                     <gmd:individualName>
                        <gco:CharacterString>Deetman, S.</gco:CharacterString>
                     </gmd:individualName>
                     <gmd:role>
                        <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="author">author</gmd:CI_RoleCode>
                     </gmd:role>
                  </gmd:CI_ResponsibleParty>
               </gmd:citedResponsibleParty>
               <gmd:citedResponsibleParty>
                  <gmd:CI_ResponsibleParty>
                     <gmd:individualName>
                        <gco:CharacterString>van Vliet, J.</gco:CharacterString>
                     </gmd:individualName>
                     <gmd:role>
                        <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="author">author</gmd:CI_RoleCode>
                     </gmd:role>
                  </gmd:CI_ResponsibleParty>
               </gmd:citedResponsibleParty>
               <gmd:citedResponsibleParty>
                  <gmd:CI_ResponsibleParty>
                     <gmd:individualName>
                        <gco:CharacterString>ven den Berg, M.</gco:CharacterString>
                     </gmd:individualName>
                     <gmd:role>
                        <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="author">author</gmd:CI_RoleCode>
                     </gmd:role>
                  </gmd:CI_ResponsibleParty>
               </gmd:citedResponsibleParty>
               <gmd:citedResponsibleParty>
                  <gmd:CI_ResponsibleParty>
                     <gmd:individualName>
                        <gmx:Anchor xlink:href="https://orcid.org/0000-0003-1232-5892"
                                    xlink:title="van Ruijven, Bastiaan J."
                                    xlink:actuate="onRequest">van Ruijven, Bastiaan J.</gmx:Anchor>
                     </gmd:individualName>
                     <gmd:role>
                        <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="author">author</gmd:CI_RoleCode>
                     </gmd:role>
                  </gmd:CI_ResponsibleParty>
               </gmd:citedResponsibleParty>
               <gmd:citedResponsibleParty>
                  <gmd:CI_ResponsibleParty>
                     <gmd:individualName>
                        <gco:CharacterString>Koelbl, B.</gco:CharacterString>
                     </gmd:individualName>
                     <gmd:role>
                        <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="author">author</gmd:CI_RoleCode>
                     </gmd:role>
                  </gmd:CI_ResponsibleParty>
               </gmd:citedResponsibleParty>
               <gmd:citedResponsibleParty>
                  <gmd:CI_ResponsibleParty>
                     <gmd:organisationName>
                        <gco:CharacterString>UCAR/NCAR - Library</gco:CharacterString>
                     </gmd:organisationName>
                     <gmd:role>
                        <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="publisher">publisher</gmd:CI_RoleCode>
                     </gmd:role>
                  </gmd:CI_ResponsibleParty>
               </gmd:citedResponsibleParty>
            </gmd:CI_Citation>
         </gmd:citation>
         <gmd:abstract>
            <gco:CharacterString>Limiting climate change to 2Â°C with a high probability requires reducing cumulative emissions to about 1600 GtCOâ over the 2000-2100 period. This requires unprecedented rates of decarbonization even in the short-run. The availability of the option of net negative emissions, such as bio-energy with carbon capture and storage (BECCS) or reforestation/afforestation, allows to delay some of these emission reductions. In the paper, we assess the demand and potential for negative emissions in particular from BECCS. Both stylized calculations and model runs show that without the possibility of negative emissions, pathways meeting the 2Â°C target with high probability need almost immediate emission reductions or simply become infeasible. The potential for negative emissions is uncertain. We show that negative emissions from BECCS are probably limited to around 0 to 10 GtCOâ/year in 2050 and 0 to 20 GtCOâ/year in 2100. Estimates on the potential of afforestation options are in the order of 0-4 GtCOâ/year. Given the importance and the uncertainty concerning BECCS, we stress the importance of near-term assessments of its availability as today's decisions has important consequences for climate change mitigation in the long run.</gco:CharacterString>
         </gmd:abstract>
         <gmd:pointOfContact>
            <gmd:CI_ResponsibleParty>
               <gmd:organisationName>
                  <gco:CharacterString>UCAR/NCAR - Library</gco:CharacterString>
               </gmd:organisationName>
               <gmd:positionName>
                  <gco:CharacterString>OpenSky Support</gco:CharacterString>
               </gmd:positionName>
               <gmd:contactInfo>
                  <gmd:CI_Contact>
                     <gmd:address>
                        <gmd:CI_Address>
                           <gmd:deliveryPoint>
                              <gco:CharacterString>PO Box 3000</gco:CharacterString>
                           </gmd:deliveryPoint>
                           <gmd:city>
                              <gco:CharacterString>Boulder</gco:CharacterString>
                           </gmd:city>
                           <gmd:administrativeArea>
                              <gco:CharacterString>CO</gco:CharacterString>
                           </gmd:administrativeArea>
                           <gmd:postalCode>
                              <gco:CharacterString>80307-3000</gco:CharacterString>
                           </gmd:postalCode>
                           <gmd:electronicMailAddress>
                              <gco:CharacterString>opensky@ucar.edu</gco:CharacterString>
                           </gmd:electronicMailAddress>
                        </gmd:CI_Address>
                     </gmd:address>
                     <gmd:onlineResource>
                        <gmd:CI_OnlineResource>
                           <gmd:linkage>
                              <gmd:URL>http://opensky.ucar.edu/</gmd:URL>
                           </gmd:linkage>
                           <gmd:name>
                              <gco:CharacterString>homepage</gco:CharacterString>
                           </gmd:name>
                        </gmd:CI_OnlineResource>
                     </gmd:onlineResource>
                  </gmd:CI_Contact>
               </gmd:contactInfo>
               <gmd:role>
                  <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="pointOfContact">pointOfContact</gmd:CI_RoleCode>
               </gmd:role>
            </gmd:CI_ResponsibleParty>
         </gmd:pointOfContact>
         <gmd:resourceFormat>
            <gmd:MD_Format>
               <gmd:name>
                  <gco:CharacterString>PDF</gco:CharacterString>
               </gmd:name>
               <gmd:version/>
            </gmd:MD_Format>
         </gmd:resourceFormat>
         <gmd:descriptiveKeywords>
            <gmd:MD_Keywords>
               <gmd:keyword>
                  <gco:CharacterString>Text</gco:CharacterString>
               </gmd:keyword>
               <gmd:type>
                  <gmd:MD_KeywordTypeCode codeList="codeListLocation#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
               </gmd:type>
               <gmd:thesaurusName>
                  <gmd:CI_Citation>
                     <gmd:title>
                        <gco:CharacterString>Resource Type</gco:CharacterString>
                     </gmd:title>
                     <gmd:date>
                        <gmd:CI_Date>
                           <gmd:date>
                              <gco:DateTime>2016-01-01T00:00:00Z</gco:DateTime>
                           </gmd:date>
                           <gmd:dateType>
                              <gmd:CI_DateTypeCode codeList="codeListLocation#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
                           </gmd:dateType>
                        </gmd:CI_Date>
                     </gmd:date>
                  </gmd:CI_Citation>
               </gmd:thesaurusName>
            </gmd:MD_Keywords>
         </gmd:descriptiveKeywords>
         <gmd:resourceConstraints>
            <gmd:MD_LegalConstraints>
               <gmd:useLimitation>
                  <gco:CharacterString>Copyright 2013 Springer Netherlands.</gco:CharacterString>
               </gmd:useLimitation>
               <gmd:otherConstraints>
                  <gco:CharacterString>None</gco:CharacterString>
               </gmd:otherConstraints>
            </gmd:MD_LegalConstraints>
         </gmd:resourceConstraints>
         <gmd:language>
            <gmd:LanguageCode codeList="codeListLocation#LanguageCode" codeListValue="eng">eng</gmd:LanguageCode>
         </gmd:language>
         <gmd:topicCategory>
            <gmd:MD_TopicCategoryCode>geoscientificInformation</gmd:MD_TopicCategoryCode>
         </gmd:topicCategory>
      </gmd:MD_DataIdentification>
   </gmd:identificationInfo>
</gmd:MD_Metadata>
