<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-tree-12708</Entry_ID>
  <Entry_Title>Villanueva - Barranca de Amealco - TAMU - ITRDB MEXI047</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>Villanueva-Diaz, J.; Stahle, D.W.; Therrell, M.D.; Acuña Soto, R.</Dataset_Creator>
    <Dataset_Title>Villanueva - Barranca de Amealco - TAMU - ITRDB MEXI047</Dataset_Title>
    <Dataset_Release_Date>2011-05-18</Dataset_Release_Date>
    <Dataset_Publisher>NCDC-Paleoclimatology</Dataset_Publisher>
    <Data_Presentation_Form>ONLINE Files</Data_Presentation_Form>
    <Dataset_DOI>10.25921/1q87-9452</Dataset_DOI>
    <Online_Resource>https://www.ncdc.noaa.gov/paleo/study/12708</Online_Resource>
  </Data_Set_Citation>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>J.</First_Name>
    <Last_Name>Villanueva-Diaz</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>D.W.</First_Name>
    <Last_Name>Stahle</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>M.D.</First_Name>
    <Last_Name>Therrell</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>R.</First_Name>
    <Last_Name>Acuña Soto</Last_Name>
  </Personnel>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BA413C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BA515E; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0948A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0951G; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0903F; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0907B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0912A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0920C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0922C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0902I; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BA515D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0942E; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0942G; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0956B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0957A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0957G; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0903D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0905D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0922A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0938B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0940A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0947A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BA515B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0948C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0948E; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0949C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0949K; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0956Q; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0957D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0902D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0952A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0963B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BAM61B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0942A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0948D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0951D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0956R; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0956N; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0963A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BAM14A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BAM61A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BA413A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BA513B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BA515C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0942C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0948M; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0912C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0925A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BAM14B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0948B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0951K; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0956M; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0906B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0922B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0950A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0961A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>age,null,null,year Common Era,null,tree ring,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BA508A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BA515A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0942F; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0948O; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0951F; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0956L; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0957B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0905B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0936A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0947B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BA405C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: BA508B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0942B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0942D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0949E; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0949O; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0907D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree ring</Term>
    <Detailed_Variable>total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: B0914A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>tree-ring</Term>
    <Variable_Level_1>width</Variable_Level_1>
  </Parameters>
  <ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
  <Keyword>drought</Keyword>
  <Keyword>TAMU</Keyword>
  <Keyword>Taxodium mucronatum Ten.</Keyword>
  <Keyword>Montezuma cypress</Keyword>
  <Paleo_Temporal_Coverage>
    <Paleo_Start_Date>771 AD</Paleo_Start_Date>
    <Paleo_Stop_Date>2008 AD</Paleo_Stop_Date>
  </Paleo_Temporal_Coverage>
  <Paleo_Temporal_Coverage>
    <Paleo_Start_Date>1179 cal yr BP</Paleo_Start_Date>
    <Paleo_Stop_Date>-58 cal yr BP</Paleo_Stop_Date>
  </Paleo_Temporal_Coverage>
  <Data_Set_Progress>Complete</Data_Set_Progress>
  <Spatial_Coverage>
    <Southernmost_Latitude>20.35</Southernmost_Latitude>
    <Northernmost_Latitude>20.35</Northernmost_Latitude>
    <Westernmost_Longitude>-100.1167</Westernmost_Longitude>
    <Easternmost_Longitude>-100.1167</Easternmost_Longitude>
    <Minimum_Altitude>1970</Minimum_Altitude>
    <Maximum_Altitude>1970</Maximum_Altitude>
  </Spatial_Coverage>
  <Location>
    <Location_Category>Continent</Location_Category>
    <Location_Type>North America</Location_Type>
    <Location_Subregion1>Mexico</Location_Subregion1>
    <Location_Subregion2>Queretaro de Arteaga</Location_Subregion2>
    <Detailed_Location>Barranca de Amealco&gt;LATITUDE 20.35&gt;LONGITUDE -100.1167</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>Stahle, D.W., J.V. Diaz, D.J. Burnette, J.C. Paredes, 
R.R. Heim Jr., F.K. Fye, R. Acuna Soto, M.D. Therrell, 
M.K. Cleaveland, and D.K. Stahle. 2011. 
Major Mesoamerican droughts of the past millennium. 
Geophysical Research Letters, Vol. 38, L05703, 
doi:10.1029/2010GL046472.</Reference>
  <Summary>
    <Abstract>Ancient Montezuma baldcypress (Taxodium mucronatum) trees 
found in Barranca de Amealco, Queretaro, have been used to 
develop a 1,238-year treering chronology that is correlated 
with precipitation, temperature, drought indices, and crop 
yields in central Mexico. This chronology has been used to 
reconstruct the spring-early summer soil moisture balance 
over the heartland of the Mesoamerican cultural province, 
and is the first exactly dated, annually resolved paleoclimatic 
record for Mesoamerica spanning the Late Classic, Post Classic, 
Colonial, and modern eras. The reconstruction indicates that 
the Terminal Classic drought extended into central Mexico, 
supporting other sedimentary and speleothem evidence for this 
early 10th century drought in Mesoamerica. The reconstruction 
also documents severe and sustained drought during the decline 
of the Toltec state (1149-1167) and during the Spanish conquest 
of the Aztec state (1514-1539), providing a new precisely dated 
climate framework for Mesoamerican cultural change.  
          STUDY NOTES: NOAA Template Raw Measurements file added 2019-02-04.</Abstract>
  </Summary>
  <Related_URL>
    <URL_Content_Type>
      <Type>GET DATA</Type>
    </URL_Content_Type>
    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/mexico/mexi047.rwl</URL>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>GET DATA</Type>
    </URL_Content_Type>
    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/mexico/mexi047-noaa.rwl</URL>
    <Description>Raw Measurements - NOAA Template File; mexi047-noaa.rwl</Description>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>GET DATA</Type>
    </URL_Content_Type>
    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/mexi047.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>2019-02-04</DIF_Creation_Date>
  <Last_DIF_Revision_Date>2019-02-04</Last_DIF_Revision_Date>
</DIF>
