Cleaveland - Guadalupe River State Park - TADI - ITRDB TX052 Cleaveland, M.K.; Casteel, R.C.; Stahle, D.K. Cleaveland, M.K. Casteel, R.C. Stahle, D.K. drought TADI Taxodium distichum (L.) Rich. baldcypress earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP16G; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP38C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP40C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP04F; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP05D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP23C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP43A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (tree ring standardized growth index,null,null,null,null,tree ring,composited,standard,N,null) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP13E; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP14A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP16H; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP40A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP15B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP15E; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP16I; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP23A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (number of samples,null,null,count,null,tree ring,null,null,N,null) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP05B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP14B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP17D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP43B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP15A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP16A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP17E; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP30A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP38B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP39C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP40B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (age,null,null,year Common Era,null,tree ring,null,null,N,null) earth science/paleoclimate/tree ring (tree ring standardized growth index,null,null,null,null,tree ring,composited,residual,N,null) earth science/paleoclimate/tree ring (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) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP04D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP05C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP13B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP13C; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP13F; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP16B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP17A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP23B; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP38E; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP40D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (tree ring standardized growth index,null,null,null,null,tree ring,composited,ARSTAN,N,null) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: GRP38D; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree-ring (Guadalupe River State Park>LATITUDE 29.872>LONGITUDE -98.499) Short instrumental climatic records prevent appropriate statistical and historical characterization of extreme events such as the extent, duration, and severity of multiyear droughts. The best solution is to extend climatic records through well-understood proxies of climate. One of the best such proxies is climate-sensitive annual tree rings, which can be dated precisely to the year, are easily sampled, and are widely distributed. We created 3 new baldcypress chronologies in South Central Texas and used them, along with existing Douglas-fir chronologies from West Texas and a composite post oak chronology in Central Texas, to calibrate 1931-2008 and reconstruct June Palmer Drought Severity Index (PDSI) in Texas climate divisions 5 (Trans Pecos), 6 (Edwards Plateau), 7 (S. Central), and 8 (Upper Coast) 1500-2008. We validated the reconstructions against observed data not used in calibration. Most water planners in Texas at present use the drought of the 1950s, 1950-1956, as a worst-case scenario. Our reconstructions show, however, that a number of extended droughts of the past were longer and/or more intense than the 1950s drought. Furthermore, extended droughts have been a consistent feature of southwestern climate since the 800s, including at least 4megadroughts 15- to 30-years long centered in central or northern Mexico (Stahle et al. 2009; 2011b). This and previous studies indicate that severe decadal-scale droughts have occurred in Texas at least once a century since the 1500s. Current use by water planners of the 1950s drought as a worst-case scenario, therefore, is questionable. When water managers consider past droughts, population growth, and climate change, it becomes highly probable that the future poses unprecedented challenges. STUDY NOTES: NOAA Template Chronology file added 2018-12-20. NOAA Template Raw Measurements file added 2019-02-08. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Cleaveland, M.K. Investigator : Casteel, R.C. Investigator : Stahle, D.K. 2012-08-07 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/14033 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052a-noaa.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/tx052-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052-noaa.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052r-noaa.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/tx052.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052r.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052a.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/tx052.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052a-noaa.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/tx052-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052-noaa.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052r-noaa.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/tx052.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052r.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052a.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/tx052.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052.crn English https://www.ncdc.noaa.gov/paleo/study/14033 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052a-noaa.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/tx052-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052-noaa.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052r-noaa.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/tx052.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052r.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052a.crn https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/tx052.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/tx052.crn Cleaveland, M.K., T.H. Votteler, D.K. Stahle, R.C. Casteel, and J.L. Banner. 2011. Extended Chronology of Drought in South Central, Southeastern and West Texas. Texas Water Journal, Vol. 2, No. 1, pp. 54-96, December 2011. START YEAR: 1486 AD * END YEAR: 2009 AD -98.499 29.872 -98.499 29.872