Northern Patagonia 60 Year Tree-Ring Oxygen Isotope Data Lavergne, A.; Daux, V.; Villalba, R.; Pierre, M.; Stievenard, M.; Vimeux, F.; Srur, A.M. Lavergne, A. Daux, V. Villalba, R. Pierre, M. Stievenard, M. Vimeux, F. Srur, A.M. FICU Fitzroya cupressoides (Molina) I.M. Johnst. alerce Patagonian cypress earth science/paleoclimate/tree ring (delta 18O,alpha cellulose,null,per mil SMOW,null,tree ring,composited,isotope ratio mass spectrometry,N,chronology) earth science/paleoclimate/tree ring (age,null,null,year Common Era,null,tree ring,null,null,N,null) earth science/paleoclimate/tree-ring (La Almohadilla>LATITUDE -41.18>LONGITUDE -71.78) (Rio Alerce>LATITUDE -41.18>LONGITUDE -71.77) (Glaciar Frias 2>LATITUDE -41.13>LONGITUDE -71.8) (Paso de la Nubes>LATITUDE -41.15>LONGITUDE -71.8) (Challhuaco>LATITUDE -41.25>LONGITUDE -71.28) Tree ring d18O chronologies from two native species (Fitzroya cupressoides and Nothofagus pumilio) in northern Patagonia were developed to assess their potential for paleoclimate reconstructions. The five annually resolved cellulose d18O chronologies (two for F. cupressoides and three for N. pumilio) are located on the Andes along the steep west-to-east precipitation gradient. Over the common 60 years long interval, the five site-d18Ocell chronologies exhibit a strong common signal as indicated by the significant mean intercorrelation (r = 0.61, p < 0.05) and the high percentage (65%) of total variance explained by the first empirical orthogonal function. Although correlation analyses reveal that the two mean species-d18Ocell chronologies are mainly modulated by December-May temperature, the N. pumilio chronology shows a greater sensitivity to record temperature variations (r = 0.57, p < 0.05). The d18Ocell of N. pumilio contains a regional temperature signal representative of a large area in southern South America under the influence of the Southern Annular Mode. This study indicates that d18Ocell in N. pumilio is a promising proxy to reconstruct past variations in temperature in South America south of 38S. STUDY NOTES: Tree-ring oxygen isotope (d18O) annual chronologies from 5 sites and two native species (Fitzroya cupressoides and Nothofagus pumilio) in northern Patagonia, Argentina, for the past 60 years. IITRDB16 NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Lavergne, A. Investigator : Daux, V. Investigator : Villalba, R. Investigator : Pierre, M. Investigator : Stievenard, M. Investigator : Vimeux, F. Investigator : Srur, A.M. 2016-09-07 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/20466 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/nubes2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/glaciarfrias2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/alerce2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/challhuaco2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/almohadilla2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/nubes2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/glaciarfrias2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/alerce2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/challhuaco2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/almohadilla2016d18o.txt English https://www.ncdc.noaa.gov/paleo/study/20466 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/nubes2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/glaciarfrias2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/alerce2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/challhuaco2016d18o.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/argentina/almohadilla2016d18o.txt Aliénor Lavergne, Valérie Daux, Ricardo Villalba, Monique Pierre, Michel Stievenard, Françoise Vimeux, Ana Marina Srur2016Are the oxygen isotopic compositions of Fitzroya cupressoides and Nothofagus pumilio cellulose promising proxies for climate reconstructions in northern Patagonia?Journal of Geophysical Research: Biogeosciences1213767-77610.1002/2015JG003260http://onlinelibrary.wiley.com/doi/10.1002/2015JG003260/full START YEAR: 1952 AD * END YEAR: 2011 AD -71.8 -41.25 -71.28 -41.13