Eastern Australia and New Zealand Drought Atlas (ANZDA) Palmer, J.G.; Cook, E.R.; Turney, C.S.M.; Allen, K.J.; Fenwick, P.; Cook, B.I.; O'Donnell , A.J.; Lough, J.M.; Grierson, P.F.; Baker, P.J. Palmer, J.G. Cook, E.R. Turney, C.S.M. Allen, K.J. Fenwick, P. Cook, B.I. O'Donnell , A.J. Lough, J.M. Grierson, P.F. Baker, P.J. Palmer Drought Index Reconstruction drought earth science/paleoclimate/climate reconstructions|corals and sclerosponges|tree ring (Palmer Drought Severity Index,null,calibration coefficient of determination,dimensionless,Dec-Feb,climate reconstructions|corals and sclerosponges|tree ring,null,null,N,null) earth science/paleoclimate/instrumental (longitude,null,null,degree east,null,instrumental,null,null,N,null) earth science/paleoclimate/climate reconstructions|corals and sclerosponges|tree ring (Palmer Drought Severity Index,null,calibration leave-one-out cross-validation reduction of error,dimensionless,Dec-Feb,climate reconstructions|corals and sclerosponges|tree ring,null,null,N,null) earth science/paleoclimate/climate reconstructions|corals and sclerosponges|tree ring (latitude,null,null,degree north,null,climate reconstructions|corals and sclerosponges|tree ring,null,null,N,null) earth science/paleoclimate/climate reconstructions|corals and sclerosponges|tree ring (longitude,null,null,degree east,null,climate reconstructions|corals and sclerosponges|tree ring,null,null,N,null) earth science/paleoclimate/climate reconstructions|corals and sclerosponges|tree ring (Palmer Drought Severity Index,null,verification reduction of error,dimensionless,Dec-Feb,climate reconstructions|corals and sclerosponges|tree ring,null,null,N,null) earth science/paleoclimate/instrumental (age,null,null,year Common Era,null,instrumental,null,null,N,null) earth science/paleoclimate/climate reconstructions|corals and sclerosponges|tree ring (Palmer Drought Severity Index,null,verification coefficient of efficiency,dimensionless,Dec-Feb,climate reconstructions|corals and sclerosponges|tree ring,null,null,N,null) earth science/paleoclimate/climate reconstructions|corals and sclerosponges|tree ring (age,null,null,year Common Era,null,climate reconstructions|corals and sclerosponges|tree ring,null,null,N,null) earth science/paleoclimate/climate reconstructions|corals and sclerosponges|tree ring (Palmer Drought Severity Index,null,null,standard deviation unit,Dec-Feb,climate reconstructions|corals and sclerosponges|tree ring,null,null,N,null) earth science/paleoclimate/climate reconstructions|corals and sclerosponges|tree ring (Palmer Drought Severity Index,null,verification coefficient of determination,dimensionless,Dec-Feb,climate reconstructions|corals and sclerosponges|tree ring,null,null,N,null) earth science/paleoclimate/instrumental (latitude,null,null,degree north,null,instrumental,null,null,N,null) earth science/paleoclimate/instrumental (Palmer Drought Severity Index,null,null,standard deviation unit,Dec-Feb,instrumental,null,null,N,null) earth science/paleoclimate/reconstructions (Eastern Australia and New Zealand>LATITUDE >LONGITUDE ) Agricultural production across eastern Australia and New Zealand is highly vulnerable to drought, but there is a dearth of observational drought information prior to CE 1850. Using a comprehensive network of 176 drought-sensitive tree-ring chronologies and one coral series, we report the first Southern Hemisphere gridded drought atlas extending back to CE 1500. The austral summer (December-February) Palmer drought sensitivity index reconstruction accurately reproduces historically documented drought events associated with the first European settlement of Australia in CE 1788, and the leading principal component explains over 50% of the underlying variance. This leading mode of variability is strongly related to the Interdecadal Pacific Oscillation tripole index (IPO), with a strong and robust antiphase correlation between (1) eastern Australia and the New Zealand North Island and (2) the South Island. Reported positive, negative, and neutral phases of the IPO are consistently reconstructed by the drought atlas although the relationship since CE 1976 appears to have weakened. STUDY NOTES: Eastern Australia and New Zealand 500-year austral summer (December-February) gridded (0.5x0.5 degree) Palmer drought severity index reconstruction (PDSI), based on 176 drought-sensitive tree-ring chronologies and one coral series. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Palmer, J.G. Investigator : Cook, E.R. Investigator : Turney, C.S.M. Investigator : Allen, K.J. Investigator : Fenwick, P. Investigator : Cook, B.I. Investigator : O'Donnell , A.J. Investigator : Lough, J.M. Investigator : Grierson, P.F. Investigator : Baker, P.J. 2016-06-06 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/20245 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/readme-palmer2015anzda.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-act-djf-anom.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-recon.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-calver-stats.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-pdsi-xy.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/readme-palmer2015anzda.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-act-djf-anom.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-recon.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-calver-stats.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-pdsi-xy.txt English https://www.ncdc.noaa.gov/paleo/study/20245 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/readme-palmer2015anzda.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-act-djf-anom.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-recon.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-calver-stats.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/australia/palmer2015pdsi/anzda-pdsi-xy.txt Jonathan G. Palmer, Edward R. Cook, Chris S.M. Turney, Kathy Allen, Pavla Fenwick, Benjamin I. Cook, Alison O'Donnell, Janice Lough, Pauline Grierson, Patrick Baker2015Drought variability in the eastern Australia and New Zealand summer drought atlas (ANZDA, CE 1500-2012) modulated by the Interdecadal Pacific OscillationEnvironmental Research Letters124002101210.1088/1748-9326/10/12/124002http://iopscience.iop.org/article/10.1088/1748-9326/10/12/124002/ START YEAR: 1500 AD * END YEAR: 2012 AD 136 -47 178.5 -11