# WDC PALEO DATA SUBMISSION for PAGES 2k database # # Created 28 Feb 2013 by Raphi Neukom based on WDC template from 21 Dec 2012 using make_NOAA_files.r #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original reference when using these data, # plus the Online Resource and date accessed. # # Original_Source_URL: # # Archive: Tree Ring #-------------------- # Contribution_Date # Date: 2013-02-28 #-------------------- # Title # Study_Name: North-Western Argentina composite 2 Tree ring width #-------------------- # Investigators # Investigators: Morales, M.; Villalba, R.; Neukom, R. #-------------------- # Description_and_Notes # Description: Uploaded by R. Neukom, data obtained from original authors. # These are not raw data but processed and truncated chronologies, representing a composite of two or more individual sites. Details see (Neukom and Gergis 2011, The Holocene, DOI: 10.1177/0959683611427335). For the raws contact the authors or/and check ITRDB. #-------------------- # Publication # Authors: Neukom, R.; Gergis, J. # Published_Date_or_Year: 2012 # Published_Title: Southern Hemisphere high-resolution palaeoclimate records of the last 2000 years # Journal_Name: The Holocene # Volume: 22 # Issue: 5 # Pages: 501-524 # DOI: 10.1177/0959683611427335 #-------------------- # Publication # Authors: Villalba, R.; Holmes, R. L.; Boninsegna, J. A. # Published_Date_or_Year: 1992 # Published_Title: Spatial Patterns of Climate and Tree Growth Variations in Subtropical Northwestern Argentina # Journal_Name: Journal of Biogeography # Volume: 19 # Issue: 6 # Pages: 631-649 # Abstract: In order to gain an understanding of the spatial connections between instrumental and proxy climatic data in subtropical regions, we investigated the spatial patterns of climate and tree-growth anomalies in the montane forests of northwestern Argentina. Principal components technique was used to identify the dominant spatial patterns of climate and tree growth anomalies. A 43-year data set of monthly total precipitation at a selected network of thirty-one stations in northwestern Argentina was analysed on annual and seasonal basis. The most dominant annual pattern shows precipitation anomalies of the same sign over practically the whole area. The second and third patterns reflect altitudinal and latitudinal rainfall variations across the study area, respectively. The tree-ring data set consisted of twelve chronologies developed from Juglans australis Griseb., Cedrela angustifolia Sesse Moc., and Cedrela lilloi C.DC. The relationships between climatic conditions, site characteristics, and tree-ring growth were identified using response functions, correlation functions, and group analysis. These techniques show that tree ring widths in subtropical Argentina are affected by weather conditions from late winter to early summer. Tree-ring patterns mainly reflect the direct effects of the principal types of rainfall patterns observed, the first in which rainfall conditions are uniform across the study area. and the third in which precipitation anomalies are concentrated in the northeastern part of the region. Finally, different regression models were used to reconstruct annual and seasonal variations in precipitation. On average, 60-80% of the variance in regional precipitation is explained using the ring-width chronologies as predictive variables. #-------------------- # Publication # Authors: Morales, M. S.; Villalba, R.; Grau, H. R.; Paolini, L. # Published_Date_or_Year: 2004 # Published_Title: Rainfall-controlled tree growth in high-elevation subtropical treelines # Journal_Name: Ecology # Volume: 85 # Issue: 11 # Pages: 3080-3089 # Abstract: It is generally assumed that tree growth in the upper limit of a forest is mainly controlled by summer temperature. This general statement is mostly based on studies from extra-tropical mountains and has been rarely evaluated in subtropical latitudes frequently characterized by drier climates. In the subtropical mountains from Northwestern Argentina (similar to23degrees S), annual precipitation decreases with elevation from > 1500 mm at 12001500 m. to <200 mm above 4000 m. In consequence, tree growth at high elevations in the region may be seriously limited by water supply. In order to assess the influence of precipitation on tree growth, we evaluated the relationships between climatic variations and radial growth in four species growing at different altitudinal zones: Juglans australis from the montane cloud forest at 1800 m; Alnus acuminata from the montane savanna-like woodland at 2700 m; Prosopis ferox from the subalpine dryland at 3500 m; and Polylepis tarapacana from the high-elevation alpine dryland at 4750 m. Dendrochronological techniques were used to relate variations in annual ring width with instrumental climatic records. Growth rings were correctly dated to the year of formation, and the cross-dated series standardized using autoregressive models to reduce non-climatic signals present in the records. Tree-ring chronologies, ranging from 117 to 341 years, were compared, during the common period, with instrumental climatic records using correlation-function analysis. In spite of the remarkable differences in elevation and environmental conditions among the sampling sites, correlation functions with climate indicated that the radial growth of the four species is largely controlled by precipitation. In most cases, increased precipitation during the previous and current growing seasons favors tree growth, while temperatures are negatively correlated with radial growth, likely due to the negative effect on water availability. These results indicate that the generalized idea of upper-treeline growth limited by summer temperatures should be carefully evaluated in low-latitude environments and does not apply to subtropical areas with severe water deficits or strong moisture seasonalities. #-------------------- # Funding_Agency #-------------------- # Site_Information # Site_Name: North-Western Argentina composite 2 # Location: South America>Argentina # Region: PAGES LOTRED SA # Country: Argentina # Northernmost_Latitude: -24 # Southernmost_Latitude: -24 # Easternmost_Longitude: -65 # Westernmost_Longitude: -65 # Elevation: 2200 #-------------------- # Data_Collection # Collection_Name: Tree ring width for PAGES LOTRED SA regional reconstructions # Earliest_Year: 1818 # Most_Recent_Year: 2001 # Time_Unit: AD # Notes: These are processed data. Years with less than 5 samples and EPS<0.85 are removed. Raw data can be obtained from original authors #-------------------- # Species # Species Name: Cedrela / JGAU / Alnus #-------------------- # Chronology: #-------------------- # Variables # Short_name What,Material,Error,Units, Anomaly_period,Archive,Details,Method,Data_type ## age_AD age, , ,AD, ,tree rings, ,counting,N ## NWA_Cluster_4_Data_20a_spline tree ring width,wood,,unitless,,tree ring,composite chronology,20 year spline,N ## NWA_Cluster_4_Data_200a_spline tree ring width,wood,,unitless,,tree ring,composite chronology,200 year spline,N ## NWA_Cluster_4_Data_NegExp tree ring width,wood,,unitless,,tree ring,composite chronology,negative exponential,N ## NWA_Cluster_4_Data_RCS.10 tree ring width,wood,,unitless,,tree ring,composite chronology,RCS,N ## NWA_Cluster_4_Data_Signalfree_2 tree ring width,wood,,unitless,,tree ring,composite chronology,signal free,N #-------------------- # Data # Missing values: NA age_AD NWA_Cluster_4_Data_20a_spline NWA_Cluster_4_Data_200a_spline NWA_Cluster_4_Data_NegExp NWA_Cluster_4_Data_RCS.10 NWA_Cluster_4_Data_Signalfree_2 1818 2.931 2.419 2.415 0.632 2.73 1819 -2.132 -1.998 -2.045 -1.96 -1.772 1820 1.826 1.068 0.897 -0.123 1.011 1821 1.465 0.914 0.952 -0.197 0.944 1822 -0.296 -0.415 -0.567 -1.046 -0.379 1823 -2.576 -2.215 -2.278 -2.225 -2.014 1824 -0.353 -0.522 -0.84 -1.172 -0.853 1825 -0.335 -0.319 -0.475 -1.17 -0.365 1826 0.048 0.152 -0.056 -0.898 0.084 1827 -0.362 -0.168 -0.304 -0.954 -0.158 1828 0.774 1.072 0.901 -0.129 0.926 1829 -0.34 0.174 0.087 -0.63 0.235 1830 0.431 0.664 0.886 0.004 0.73 1831 1.668 2.033 1.747 0.543 1.365 1832 -1.08 -0.949 -0.665 -1.058 -0.849 1833 0.153 0.284 0.134 -0.312 0.242 1834 0.897 0.892 -0.074 -0.029 0.025 1835 0.475 0.634 0.484 -0.359 0.551 1836 0.668 0.689 0.601 -0.312 0.586 1837 -0.608 -0.606 -0.705 -1.078 -0.975 1838 0.131 0.255 0.196 -0.409 0.183 1839 -0.573 -0.684 -0.749 -1.078 -0.642 1840 -0.71 -0.993 -1.041 -1.211 -0.916 1841 -0.208 -0.503 -0.534 -0.869 -0.519 1842 1.016 0.402 0.32 0.027 0.144 1843 -0.811 -0.809 -0.84 -0.786 -0.761 1844 -0.468 -0.599 -0.614 -0.486 -0.547 1845 -0.468 -0.658 -0.698 -0.592 -0.618 1846 -0.859 -0.768 -0.804 -0.589 -0.737 1847 1.219 1.175 1.109 0.941 1.063 1848 -1.467 -1.004 -1.041 -0.842 -0.982 1849 -0.56 -0.595 -0.406 -0.256 -0.54 1850 0.343 0.332 0.349 0.682 0.477 1851 -0.349 -0.297 -0.289 0.027 -0.133 1852 0.461 0.976 0.908 0.894 0.919 1853 1.161 1.473 1.415 1.218 1.439 1854 0.611 1.256 1.229 1.121 1.242 1855 0.184 0.605 0.623 0.578 0.516 1856 0.391 0.579 0.605 0.581 0.481 1857 0.316 0.395 0.353 0.213 0.309 1858 0.166 -0.227 -0.191 -0.265 -0.284 1859 -0.076 -0.367 -0.381 -0.394 -0.442 1860 -1.322 -1.409 -1.381 -1.116 -1.354 1861 -0.507 -1.044 -1.048 -0.993 -1.067 1862 0.162 -0.625 -0.702 -0.674 -0.926 1863 -0.965 -1.239 -1.253 -1.034 -1.344 1864 -1.819 -2.259 -2.216 -1.789 -2.161 1865 0.149 -0.404 -0.527 -0.217 -0.533 1866 -0.208 -0.408 -0.472 -0.253 -0.54 1867 0.871 0.535 0.499 0.685 0.495 1868 1.029 0.822 0.787 0.938 0.737 1869 -0.569 -0.367 -0.373 -0.014 -0.323 1870 0.034 0.362 0.342 0.664 0.369 1871 0.532 0.906 0.769 1.106 0.828 1872 1.122 1.621 1.47 1.675 1.432 1873 0.69 0.873 0.747 1.068 0.758 1874 -0.049 -0.032 -0.085 0.363 -0.137 1875 0.012 -0.04 -0.151 0.408 -0.039 1876 -1.198 -1.004 -1.001 -0.495 -0.909 1877 -1.388 -1.225 -1.238 -0.754 -1.225 1878 0.122 0.163 0.068 0.493 0.116 1879 -0.313 -0.201 -0.267 -0.082 -0.228 1880 -1.392 -1.118 -1.151 -0.76 -1.053 1881 -0.921 -0.695 -0.687 -0.4 -0.684 1882 1.386 1.238 1.196 1.13 1.098 1883 1.897 2.011 1.984 2.064 1.934 1884 0.188 0.538 0.565 0.794 0.509 1885 0.122 0.597 0.583 0.838 0.397 1886 -0.837 -0.363 -0.428 -0.259 -0.382 1887 -0.102 0.27 0.167 0.499 0.123 1888 0.479 0.848 0.74 0.738 0.6 1889 0.004 0.34 0.287 0.322 0.232 1890 0.4 0.612 0.583 0.599 0.554 1891 -0.406 -0.246 -0.315 0.021 -0.291 1892 -0.564 -0.253 -0.278 0.11 -0.239 1893 0.668 0.811 0.758 1.094 0.783 1894 0.51 0.332 0.247 0.634 0.281 1895 -0.19 0.001 -0.034 0.269 0.004 1896 -1.317 -1.122 -1.081 -0.736 -1.035 1897 -0.054 -0.01 0.01 0.228 0.035 1898 -0.278 -0.271 -0.267 -0.041 -0.256 1899 1.971 1.322 1.309 1.743 1.246 1900 0.554 0.457 0.444 0.584 0.407 1901 0.602 0.262 0.327 0.543 0.183 1902 -0.08 -0.363 -0.293 0.018 -0.372 1903 -2.55 -2.193 -2.162 -1.744 -2.063 1904 -0.639 -0.831 -0.764 -0.509 -0.754 1905 0.285 0.064 0.061 0.204 0.014 1906 1.223 0.711 0.689 0.808 0.614 1907 -0.802 -0.908 -0.877 -0.766 -0.877 1908 0.739 0.273 0.309 0.381 0.207 1909 -0.688 -0.765 -0.727 -0.592 -0.751 1910 0.021 -0.4 -0.267 -0.129 -0.372 1911 1.258 0.292 0.404 0.578 0.109 1912 0.14 -0.316 -0.264 -0.359 -0.333 1913 0.866 0.192 0.262 0.508 0.112 1914 -0.538 -0.919 -0.855 -0.739 -0.888 1915 -0.291 -0.849 -0.866 -0.733 -0.923 1916 -0.873 -1.269 -1.227 -0.984 -1.249 1917 -0.38 -1.011 -1.034 -0.721 -1.046 1918 1.078 0.115 0.178 0.219 0.098 1919 0.448 -0.22 -0.271 -0.2 -0.361 1920 -0.102 -0.533 -0.556 -0.456 -0.667 1921 -1.766 -1.733 -1.669 -1.376 -1.632 1922 -1.964 -1.729 -1.665 -1.668 -1.691 1923 -0.965 -0.827 -0.793 -0.433 -0.947 1924 0.413 0.461 0.521 0.856 0.379 1925 0.439 0.608 0.616 1.121 0.656 1926 0.976 1.503 1.554 2.182 1.558 1927 0.1 0.594 0.663 1.448 0.691 1928 1.148 1.849 1.959 2.132 1.969 1929 0.611 1.359 1.397 2.356 1.253 1930 0.963 1.635 1.744 2.551 1.755 1931 -0.177 0.502 0.623 1.321 0.719 1932 -1.146 -0.518 -0.446 -0.203 -0.488 1933 -1.194 -0.529 -0.421 -0.005 -0.375 1934 0.052 0.395 0.525 1.203 0.547 1935 1.056 1.23 1.349 2.182 1.281 1936 -0.925 -0.647 -0.545 -0.114 -0.572 1937 -0.52 -0.312 -0.183 0.469 -0.126 1938 0.941 0.973 1.072 2.076 0.94 1939 -1.357 -0.919 -0.851 -0.094 -0.779 1940 -0.115 -0.15 0.028 0.761 -0.084 1941 -0.785 -0.466 -0.34 0.505 -0.389 1942 0.232 0.531 0.678 1.578 0.509 1943 0.316 0.553 0.682 1.307 0.544 1944 0.646 1.021 1.116 1.684 0.86 1945 -0.353 0.038 0.149 0.517 -0.067 1946 0.668 0.991 1.13 1.666 0.797 1947 1.126 1.385 1.514 2.394 1.126 1948 -0.322 0.056 0.006 0.9 -0.116 1949 -0.005 0.262 0.317 1.321 0.081 1950 -0.503 -0.341 -0.286 0.555 -0.418 1951 -0.093 -0.084 0.032 0.805 -0.239 1952 0.276 0.167 0.254 0.971 -0.024 1953 0.413 -0.04 -0.001 1.021 -0.295 1954 0.378 -0.028 0.036 0.953 -0.161 1955 -1.176 -1.346 -1.3 -1.084 -1.421 1956 -1.339 -1.567 -1.432 -0.948 -1.544 1957 -0.371 -0.916 -0.844 -0.052 -1.014 1958 0.043 -0.577 -0.519 -0.064 -0.709 1959 -0.199 -0.639 -0.592 -0.079 -0.818 1960 0.642 -0.087 0.003 0.782 -0.337 1961 -0.19 -0.621 -0.548 0.048 -0.726 1962 -0.137 -0.559 -0.483 0.095 -0.747 1963 -0.586 -0.746 -0.705 -0.212 -0.803 1964 0.765 0.075 0.098 0.546 -0.161 1965 0.919 0.34 0.408 0.944 0.197 1966 0.681 0.181 0.258 0.832 0.119 1967 0.202 -0.124 -0.059 0.387 -0.186 1968 -0.683 -0.846 -0.793 -0.521 -0.818 1969 -0.969 -1.118 -1.1 -0.724 -1.218 1970 -0.01 -0.411 -0.392 -0.091 -0.481 1971 0.404 0.045 0.116 0.189 0.116 1972 -1.04 -1.055 -1.023 -0.884 -1.179 1973 -0.195 -0.327 -0.246 -0.067 -0.312 1974 0.549 0.203 0.291 0.263 0.105 1975 0.73 0.365 0.455 0.257 0.351 1976 0.338 0.1 0.189 0.01 0.126 1977 0.475 0.244 0.302 0.139 0.151 1978 0.743 0.314 0.441 0.186 0.281 1979 -1.194 -1.1 -1.059 -0.96 -1.182 1980 -0.054 -0.109 -0.158 -0.315 -0.361 1981 -1.172 -1.037 -1.045 -0.931 -1.147 1982 -0.203 -0.135 -0.154 -0.362 -0.421 1983 0.312 0.376 0.368 -0.25 0.021 1984 -1.291 -0.974 -0.99 -0.951 -1.193 1985 0.378 0.535 0.47 0.204 0.232 1986 0.422 0.686 0.616 0.169 0.354 1987 0.017 0.439 0.463 0.03 0.207 1988 0.395 0.822 0.795 0.399 0.607 1989 1.139 1.411 1.357 0.605 1.025 1990 0.541 0.914 0.831 0.122 0.698 1991 -0.696 -0.257 -0.315 -0.795 -0.463 1992 0.673 1.131 0.977 0.036 0.884 1993 -0.195 0.244 0.167 -0.483 0.028 1994 -0.203 0.192 0.046 -0.589 -0.01 1995 -0.829 -0.544 -0.596 -1.282 -0.674 1996 -0.164 0.012 -0.154 -1.114 -0.2 1997 1.509 1.146 0.944 -0.689 0.663 1998 -0.468 -0.827 -0.881 -1.55 -1.06 1999 -1.612 -2.296 -2.348 -2.284 -2.235 2000 -0.622 -1.431 -1.549 -2.31 -1.951 2001 0.435 -1.306 -1.483 -2.375 -2.088