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  <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Villanueva - Barranca de Amealco - TAMU - ITRDB MEXI047</dc:title>
  <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Villanueva-Diaz, J.; Stahle, D.W.; Therrell, M.D.; Acuña Soto, R.</dc:creator>
  <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Villanueva-Diaz, J.</dc:creator>
  <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Stahle, D.W.</dc:creator>
  <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Therrell, M.D.</dc:creator>
  <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Acuña Soto, R.</dc:creator>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">drought</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">TAMU</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Taxodium mucronatum Ten.</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Montezuma cypress</dc:subject>
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  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
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  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree ring (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)</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">earth science/paleoclimate/tree-ring</dc:subject>
  <dc:subject xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows"> (Barranca de Amealco&gt;LATITUDE 20.35&gt;LONGITUDE -100.1167)</dc:subject>
  <dc:description xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">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.</dc:description>
  <dc:publisher xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">NCDC-Paleoclimatology</dc:publisher>
  <dc:publisher xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce</dc:publisher>
  <dc:contributor xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Investigator : Villanueva-Diaz, J.</dc:contributor>
  <dc:contributor xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Investigator : Stahle, D.W.</dc:contributor>
  <dc:contributor xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Investigator : Therrell, M.D.</dc:contributor>
  <dc:contributor xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">Investigator : Acuña Soto, R.</dc:contributor>
  <dc:date xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">2011-05-18</dc:date>
  <dc:type xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">ONLINE Files</dc:type>
  <dc:format xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">online, ASCII</dc:format>
  <dc:identifier xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www.ncdc.noaa.gov/paleo/study/12708</dc:identifier>
  <dc:identifier xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/mexico/mexi047.rwl</dc:identifier>
  <dc:identifier xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/mexico/mexi047-noaa.rwl</dc:identifier>
  <dc:identifier xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/mexi047.txt</dc:identifier>
  <dc:source xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/mexico/mexi047.rwl</dc:source>
  <dc:source xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/mexico/mexi047-noaa.rwl</dc:source>
  <dc:source xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/mexi047.txt</dc:source>
  <dc:language xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">English</dc:language>
  <dc:relation xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www.ncdc.noaa.gov/paleo/study/12708</dc:relation>
  <dc:relation xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/mexico/mexi047.rwl</dc:relation>
  <dc:relation xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/mexico/mexi047-noaa.rwl</dc:relation>
  <dc:relation xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/mexi047.txt</dc:relation>
  <dc:relation xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">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.</dc:relation>
  <dc:coverage xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">START YEAR: 771 AD  * END YEAR: 2008 AD</dc:coverage>
  <ows:WGS84BoundingBox xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ows="http://www.opengis.net/ows">
   <ows:LowerCorner>-100.1167  20.35</ows:LowerCorner>
   <ows:UpperCorner>-100.1167  20.35</ows:UpperCorner>
  </ows:WGS84BoundingBox>
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