Albemarle Sound Drainage Basin 1000 Year Moisture Balance Reconstruction Stahle, D.K.; Burnette, D.J.; Stahle, D.W. Stahle, D.K. Burnette, D.J. Stahle, D.W. Other Hydroclimate Reconstruction drought TADI Taxodium distichum (L.) Rich. baldcypress earth science/paleoclimate/climate reconstructions|tree ring (age,null,null,year Common Era,null,climate reconstructions|tree ring,null,null,N,null) earth science/paleoclimate/climate reconstructions|tree ring (Palmer Hydrologic Drought Index,null,null,dimensionless,Jul,climate reconstructions|tree ring,null,principal component analysis|regression analysis,N,principal components regression) earth science/paleoclimate/instrumental (Palmer Drought Severity Index,null,null,dimensionless,Jul,instrumental,null,null,N,null) earth science/paleoclimate/climate reconstructions|tree ring (Palmer Hydrologic Drought Index,null,null,dimensionless,Jul,climate reconstructions|tree ring,smoothed,principal component analysis|regression analysis,N,smoothed with 60 year spline; principal components regression) earth science/paleoclimate/climate reconstructions|tree ring (Palmer Hydrologic Drought Index,null,null,dimensionless,Jul,climate reconstructions|tree ring,smoothed,principal component analysis|regression analysis,N,smoothed with 10 year spline; principal components regression) earth science/paleoclimate/climate reconstructions|tree ring (Palmer Hydrologic Drought Index,null,null,dimensionless,Jul,climate reconstructions|tree ring,smoothed,principal component analysis|regression analysis,N,smoothed with 30 year spline; principal components regression) earth science/paleoclimate/tree ring (number of samples,null,null,count,null,tree ring,null,null,N,null) earth science/paleoclimate/climate reconstructions|tree ring (Palmer Hydrologic Drought Index,null,null,dimensionless,Jul,climate reconstructions|tree ring,smoothed,principal component analysis|regression analysis,N,smoothed with 20 year spline; principal components regression) 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,null,N,Regional average total ring width chronology for Blackwater River + Devils Gut) earth science/paleoclimate/reconstructions (Albemarle Sound Drainage Basin>LATITUDE >LONGITUDE ) Freshwater discharge into Albemarle Sound and many other large estuaries can have a major impact on the physical and biological properties of the estuary. Earlywood (EW) and latewood (LW) width tree ring chronologies recently developed from ancient trees and sub-fossil logs found at Devil's Gut of the Roanoke River, North Carolina, were used with new EW and LW width data from Blackwater River, Virginia, to reconstruct the July Palmer Hydrological Drought Index (PHDI) over the drainage basin of Albemarle Sound from 934 to 2005. This reconstruction is based on a principal component regression using millennium-long chronologies of both EW and LW widths, calibrated and verified against instrumental July PHDI from 1895 to 1985. The reconstruction provides a lengthy representation of inter-annual to multi-decadal growing season moisture variability that directly affects water quality in the Albemarle Sound estuarine ecosystem. Single-year drought and wetness extremes were more common in the modern instrumental period (1895-2005), but prolonged droughts reconstructed during the Medieval and Early Colonial eras were more severe and sustained than the reconstructed or observed droughts during the twentieth century. Several abrupt transitions between decadal drought and wetness regimes are reconstructed, especially during the Medieval Era. Composite analysis of lower-magnitude sub-decadal regime shifts in the instrumental record during the twentieth century indicates that major changes in mid-latitude circulation over the Northern Hemisphere may have been involved in these longer decadal transitions between moisture regimes over Albemarle Sound in prehistory. STUDY NOTES: July moisture balance (Palmer Hydrological Drought Index, PHDI) reconstruction for the Albemarle Sound, North Carolina drainage basin, based on two baldcypress tree-ring chronologies, for the past millennium. Tree-ring data are archived in the International Tree-Ring Data Bank (ITRDB), site codes VA021 and NC025. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Stahle, D.K. Investigator : Burnette, D.J. Investigator : Stahle, D.W. 2015-07-22 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/19017 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/usa/albemarle2013phdi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/usa/albemarle2013trsgi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/usa/albemarle2013phdi.xlsx https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/usa/albemarle2013phdi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/usa/albemarle2013trsgi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/usa/albemarle2013phdi.xlsx English https://www.ncdc.noaa.gov/paleo/study/19017 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/usa/albemarle2013phdi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/usa/albemarle2013trsgi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/usa/albemarle2013phdi.xlsx Daniel K. Stahle, Dorian J. Burnette, David W. Stahle2013A Moisture Balance Reconstruction for the Drainage Basin of Albemarle Sound, North CarolinaEstuaries and Coasts3661340-135310.1007/s12237-013-9643-yhttp://link.springer.com/article/10.1007/s12237-013-9643-y START YEAR: 934 AD * END YEAR: 2005 AD -78 35.5 -76 36.5