<DIF xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.8.4.xsd">
  <Entry_ID>noaa-ocean-6424</Entry_ID>
  <Entry_Title>Paleocene-Eocene Boundary Equatorial Pacific and Subtropical Atlantic Planktonic Mg/Ca and d18O Data</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>Tripati, A.K.; Elderfield, H.</Dataset_Creator>
    <Dataset_Title>Paleocene-Eocene Boundary Equatorial Pacific and Subtropical Atlantic Planktonic Mg/Ca and d18O Data</Dataset_Title>
    <Dataset_Release_Date>2004-07-01</Dataset_Release_Date>
    <Dataset_Publisher>NCDC-Paleoclimatology</Dataset_Publisher>
    <Data_Presentation_Form>ONLINE Files</Data_Presentation_Form>
    <Dataset_DOI>Pending</Dataset_DOI>
    <Online_Resource>https://www.ncdc.noaa.gov/paleo/study/6424</Online_Resource>
  </Data_Set_Citation>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>A.K.</First_Name>
    <Last_Name>Tripati</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>H.</First_Name>
    <Last_Name>Elderfield</Last_Name>
  </Personnel>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>magnesium/calcium,planktic foraminifer,null,dimensionless,null,paleoceanography,null,null,N,Morozovella velascoensis</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>delta 13C,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Subbotina sp.</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>delta 18O,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Acarinina sp.</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>delta 18O,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Morozovella velascoensis</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>delta 13C,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Acarinina soldadoensis</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>delta 18O,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Subbotina sp.</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>delta 13C,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Acarinina sp.</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>delta 13C,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Morozovella velascoensis</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>magnesium/calcium,planktic foraminifer,null,dimensionless,null,paleoceanography,null,null,N,Subbotina sp.</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>delta 18O,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Acarinina soldadoensis</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>depth,null,null,centimeter,null,paleoceanography,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleoceanography</Term>
    <Detailed_Variable>magnesium/calcium,planktic foraminifer,null,dimensionless,null,paleoceanography,null,null,N,Acarinina soldadoensis</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleocean</Term>
    <Variable_Level_1>geochemistry</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleocean</Term>
    <Variable_Level_1>trace metals in carbonates</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleocean</Term>
    <Variable_Level_1>oxygen isotopes</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleocean</Term>
    <Variable_Level_1>carbon isotopes</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleocean</Term>
    <Variable_Level_1>age control</Variable_Level_1>
  </Parameters>
  <ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
  <Paleo_Temporal_Coverage>
    <Paleo_Start_Date>56000000 14C yr BP</Paleo_Start_Date>
    <Paleo_Stop_Date>54579000 14C yr BP</Paleo_Stop_Date>
  </Paleo_Temporal_Coverage>
  <Paleo_Temporal_Coverage>
    <Paleo_Start_Date>56000000 cal yr BP</Paleo_Start_Date>
    <Paleo_Stop_Date>54579000 cal yr BP</Paleo_Stop_Date>
  </Paleo_Temporal_Coverage>
  <Data_Set_Progress>Complete</Data_Set_Progress>
  <Spatial_Coverage>
    <Southernmost_Latitude>-28.03</Southernmost_Latitude>
    <Northernmost_Latitude>32.65</Northernmost_Latitude>
    <Westernmost_Longitude>-179.555667</Westernmost_Longitude>
    <Easternmost_Longitude>158.5</Easternmost_Longitude>
    <Minimum_Altitude>-4428</Minimum_Altitude>
    <Maximum_Altitude>-1530</Maximum_Altitude>
  </Spatial_Coverage>
  <Location>
    <Location_Category>Ocean</Location_Category>
    <Location_Type>Pacific Ocean</Location_Type>
    <Location_Subregion1>North Pacific Ocean</Location_Subregion1>
    <Detailed_Location>ODP1209B&gt;LATITUDE 32.65&gt;LONGITUDE 158.5</Detailed_Location>
  </Location>
  <Location>
    <Location_Category>Ocean</Location_Category>
    <Location_Type>Pacific Ocean</Location_Type>
    <Location_Subregion1>Central Pacific Ocean</Location_Subregion1>
    <Detailed_Location>ODP 865C&gt;LATITUDE 18.440167&gt;LONGITUDE -179.555667</Detailed_Location>
  </Location>
  <Location>
    <Location_Category>Ocean</Location_Category>
    <Location_Type>Atlantic Ocean</Location_Type>
    <Location_Subregion1>South Atlantic Ocean</Location_Subregion1>
    <Detailed_Location>DSDP 527&gt;LATITUDE -28.03&gt;LONGITUDE 1.77</Detailed_Location>
  </Location>
  <Access_Constraints>None</Access_Constraints>
  <Use_Constraints>Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.</Use_Constraints>
  <Data_Set_Language>English</Data_Set_Language>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>DOC/NOAA/NESDIS/NCEI</Short_Name>
      <Long_Name>National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce </Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>https://www.ncdc.noaa.gov/data-access/paleoclimatology-data</Data_Center_URL>
    <Personnel>
      <Role>DATA Center Contact</Role>
      <First_Name>Bruce</First_Name>
      <Last_Name>Bauer</Last_Name>
      <Email>bruce.a.bauer@noaa.gov</Email>
      <Email>paleo@noaa.gov</Email>
      <Phone>303-497-6280</Phone>
      <Fax>303-497-6513</Fax>
      <Contact_Address>
        <Address>325 Broadway, E/NE31</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80305-3328</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Distribution>
    <Distribution_Media>online</Distribution_Media>
    <Distribution_Format>ASCII</Distribution_Format>
  </Distribution>
  <Reference>Tripati, A.K. and H. Elderfield. 2004. Abrupt hydrographic changes in the equatorial Pacific and subtropical Atlantic from foraminiferal Mg/Ca indicate greenhouse origin for the thermal maximum at the Paleocene-Eocene Boundary. Geochemistry, Geophysics, Geosystems, 5(2), Q02006</Reference>
  <Reference>Tripati, A. and H. Elderfield.  2005. Deep-Sea Temperature and Circulation Changes at the Paleocene-Eocene Thermal Maximum. Science, Vol. 308, pp. 1894.</Reference>
  <Summary>
    <Abstract>A rapid increase in greenhouse gas levels is thought to have fueled global warming at the Paleocene-Eocene Thermal Maximum (PETM). Foraminiferal magnesium/calcium ratios indicate that bottom waters warmed by 4 to 5C, similar to tropical and subtropical surface ocean waters, implying no amplification of warming in high-latitude regions of deep-water formation under ice-free conditions. Intermediate waters warmed before the carbon isotope excursion, in association with downwelling in the North Pacific and reduced Southern Ocean convection, supporting changing circulation as the trigger for methane hydrate release. A switch to deep convection in the North Pacific at the PETM onset could have amplified and sustained warming.</Abstract>
  </Summary>
  <Related_URL>
    <URL_Content_Type>
      <Type>GET DATA</Type>
    </URL_Content_Type>
    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/o1209b-t-tab.txt</URL>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>GET DATA</Type>
    </URL_Content_Type>
    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/tripati2004</URL>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>GET DATA</Type>
    </URL_Content_Type>
    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/o865c-t-tab.txt</URL>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>GET DATA</Type>
    </URL_Content_Type>
    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/dsd527-t-tab.txt</URL>
  </Related_URL>
  <IDN_Node>
    <Short_Name>USA/NOAA</Short_Name>
  </IDN_Node>
  <Metadata_Name>DIF</Metadata_Name>
  <Metadata_Version>Version 9.8.4</Metadata_Version>
  <DIF_Creation_Date>2019-04-29</DIF_Creation_Date>
  <Last_DIF_Revision_Date>2019-04-29</Last_DIF_Revision_Date>
</DIF>
