Dayu Cave, China 750 Year Stalagmite Oxygen Isotope Data ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!! NAME OF DATA SET: Dayu Cave, China 750 Year Stalagmite Oxygen Isotope Data LAST UPDATE: 10/2009 (Original receipt by WDC Paleo) CONTRIBUTOR: Liangcheng Tan, Institute of Earth Environment, Chinese Academy of Sciences IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2009-117 WDC PALEO CONTRIBUTION SERIES CITATION: Tan, L., et al. 2009. Dayu Cave, China 750 Year Stalagmite Oxygen Isotope Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2009-117. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Tan, L., Y. Cai, H. Cheng, Z. An, and R.L. Edwards. 2009. Summer monsoon precipitation variations in central China over the past 750 years derived from a high-resolution absolute-dated stalagmite. Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 280, Issues 3-4, pp. 432-439, 15 September 2009. doi:10.1016/j.palaeo.2009.06.030 ABSTRACT: A 2-3-year resolution record of stalagmite oxygen isotope variations from the south flank of the Qinling Mountains, central China, has revealed the Asian summer monsoon (ASM) precipitation variations in the investigated area over the past 750 years. The summer monsoon precipitation gradually increased since 1249 AD, reaching its highest values in the period 1535-1685 AD, and then decreased with substantial decadal- to centennial-scale fluctuations. The monsoon precipitation increased again between 1920 and 1970 AD. Three intervals of high monsoon precipitation were identified: 1535-1685 AD, 1755-1835 AD, and 1920-1970 AD. Three intervals of low precipitation were inferred in 1249-1325 AD, 1390-1420 AD, and 1890-1915 AD. The d18O composition and lithological features of the stalagmite coincidently indicate a wetter climate during the Little Ice Age (LIA), which is also confirmed by climate records from Chinese historical documents within this area. A comparison with other high-resolution speleothem records indicates regional differences in monsoon precipitation variability from the south to the north of central China in the last 750 years on decadal- to centennial-scale. Power spectrum analysis of the d18O record shows significant 117.8-, 34.6-, 14-, 10.3-, and ~ 6-year periodicities. These periodicities are widely observed in the climate records from ASM-controlled areas of China and are consistent with the Gleissburg periodicity, Bruckner periodicity, sunspot periodicity of solar activity, and El Nino-Southern Oscillation (ENSO) periodicity. These correlations suggest that both solar activity and ENSO periodicity may have had important influences on ASM precipitation in China over the past 750 years. GEOGRAPHIC REGION: Central China PERIOD OF RECORD: 1249 - 1983 AD FUNDING SOURCES: National Science Foundation of China grants 40531003, 40773009, and 40403001, National Basic Research Program of China grant 2004CB720206, U.S. National Science Foundation grant 0502535, and Gary Comer Science and Education Foundation grant CC8. DESCRIPTION: High-resolution (2-3 years) stalagmite oxygen isotope data from Dayu Cave, central China, on the south flank of the Qinling Mountains. The d18O values correlate well with local rainfall, and provide a high-resolution precipitation and Asian Summer Monsoon proxy for the last 750 years in central China. Dayu Cave: 33º08'N, 106º18'E, 870 m above sea level DATA: Dayu Cave stalagmite DY-1 delta 18O data Column 1: Distance (mm) Column 1: Age (Year AD) Column 2: delta 18O (per mil VPDB) Distance Age d18O (mm) (AD) (VPDB) 0.1 1982.7 -7.43 0.16 1982.4 -7.37 0.26 1981.9 -7.05 0.36 1981.3 -7 0.52 1980.5 -7.14 0.68 1979.7 -6.95 0.78 1979.1 -7.11 0.89 1978.6 -6.82 1.04 1977.7 -6.91 1.2 1976.9 -6.86 1.3 1976.4 -6.95 1.41 1975.8 -7.06 1.56 1975 -7.19 1.72 1974.1 -7.21 1.82 1973.6 -7 1.93 1973 -7.18 2.08 1972.2 -7.15 2.24 1971.4 -6.99 2.34 1970.8 -7.26 2.45 1970.3 -7.1 2.6 1969.4 -7.36 2.71 1968.9 -7.09 2.76 1968.6 -7.04 2.81 1968.3 -7.34 2.86 1968.1 -7.14 2.97 1967.5 -7.25 3.13 1966.7 -7.2 3.28 1965.9 -7.24 3.39 1965.3 -7.1 3.49 1964.7 -7.25 3.65 1963.9 -7.18 3.8 1963.1 -7.09 3.91 1962.5 -7.21 4.01 1962 -7.21 4.17 1961.2 -7.42 4.32 1960.3 -7.29 4.43 1959.8 -7.28 4.53 1959.2 -7.18 4.69 1958.4 -7.3 4.84 1957.6 -7.23 4.95 1957 -7.23 5.04 1956.5 -7.37 5.16 1955.9 -7.26 5.28 1955.2 -7.48 5.36 1954.8 -7.07 5.44 1954.4 -7.31 5.56 1953.7 -7.19 5.69 1953.1 -7.13 5.77 1952.7 -7.13 5.85 1952.2 -7.18 5.97 1951.6 -7.3 6.09 1951 -7.15 6.17 1950.5 -7.25 6.25 1950.1 -6.95 6.37 1949.5 -7.41 6.77 1947.3 -7.28 7.18 1945.2 -7.21 7.58 1943 -7.25 7.98 1940.9 -7.06 8.39 1938.8 -7.25 8.79 1936.6 -7.14 9.19 1934.5 -7.14 9.6 1932.3 -7.32 10 1930.2 -7.34 10.43 1927.9 -7.38 10.85 1925.7 -7.21 11.28 1923.4 -7.08 11.71 1921.1 -7.39 12.14 1918.9 -7.46 12.56 1916.6 -7.19 12.99 1914.3 -6.98 13.42 1912.1 -6.92 13.85 1909.8 -7.06 14.27 1907.5 -6.94 14.7 1905.3 -7.22 15.13 1903 -7.16 15.57 1900.6 -6.92 16.01 1898.3 -7.1 16.45 1896 -7.03 16.89 1893.7 -7.01 17.32 1891.3 -6.88 17.76 1889 -6.89 18.2 1886.7 -7.36 18.64 1884.3 -7.11 19.08 1882 -7.1 19.52 1879.7 -7.27 19.96 1877.4 -7.23 20.38 1875.1 -7.18 20.81 1872.9 -7.17 21.23 1870.6 -6.98 21.65 1868.4 -7.23 22.08 1866.1 -7.15 22.5 1863.9 -7.14 22.92 1861.6 -7.22 23.35 1859.4 -6.98 23.77 1857.1 -7.02 24.19 1854.9 -7.33 24.62 1852.6 -7 25.04 1850.4 -7.17 25.44 1848.3 -7.13 25.83 1846.2 -7.01 26.23 1844.1 -7.3 26.63 1842 -7.12 27.02 1839.9 -7.06 27.42 1837.7 -7.21 27.82 1835.6 -7.19 28.21 1833.5 -7.34 28.61 1830.4 -7.24 29.01 1827.8 -7.09 29.4 1825.2 -7.22 29.8 1822.6 -7.2 30.22 1819.9 -7.24 30.66 1817 -7.16 31.11 1814.1 -7.29 31.55 1811.2 -7.29 31.99 1808.3 -7.24 32.43 1805.4 -7.26 32.88 1802.5 -7.28 33.32 1799.6 -7.23 33.76 1796.7 -7.11 34.2 1793.8 -7.17 34.65 1790.9 -7.27 35.09 1788.1 -7.3 35.54 1785.1 -7.37 35.98 1782.2 -7.33 36.43 1779 -7.12 36.88 1776 -7.29 37.32 1773 -7.2 37.77 1769.9 -7.37 38.21 1766.9 -7.1 38.66 1763.9 -7.41 39.11 1760.9 -7.18 39.55 1757.9 -7.24 40 1754.8 -7.24 40.44 1751.8 -7.22 40.88 1748.8 -7.12 41.33 1745.8 -7.05 41.77 1742.8 -7.09 42.21 1739.8 -7.2 42.65 1736.8 -7.24 43.1 1733.8 -7.3 43.54 1730.9 -7.08 43.98 1727.9 -7.18 44.42 1724.9 -7.32 44.87 1721.9 -7.15 45.34 1718.7 -7.14 45.58 1717 -7.13 45.68 1716.4 -7.06 45.83 1715.4 -7.18 46.17 1713.1 -7.15 46.31 1712.1 -7.08 46.8 1708.8 -7 47.28 1705.5 -7.07 47.77 1702.2 -7.24 48.25 1698.9 -7.12 48.74 1695.6 -7.09 49.22 1692.4 -7.22 49.71 1689.1 -7.12 50.19 1685.8 -7.04 50.66 1682.6 -7.29 51.13 1679.4 -7.42 51.6 1676.2 -7.3 52.08 1673 -7.33 52.55 1669.8 -7.14 53.02 1666.6 -7.24 53.49 1663.5 -7.51 53.96 1660.3 -7.25 54.43 1657.1 -7.47 54.91 1655.1 -7.23 55.32 1652.8 -7.7 55.73 1650.6 -7.51 56.13 1648.4 -7.3 56.53 1646.2 -7.35 56.94 1644 -7.32 57.34 1641.8 -7.15 57.74 1639.6 -7.23 58.15 1637.4 -7.3 58.55 1635.2 -7.32 58.95 1633 -7.2 59.35 1630.8 -7.14 59.76 1628.6 -7.22 60.2 1626.2 -7.15 60.69 1623.5 -7.35 61.18 1620.8 -7.44 61.67 1618.1 -7.43 62.16 1615.5 -7.25 62.65 1612.8 -7.37 63.14 1610.1 -7.36 63.63 1607.4 -7.34 64.12 1604.8 -7.35 64.61 1602.1 -7.25 65.1 1599.4 -7.24 65.58 1596.8 -7.28 66.07 1594.1 -7.25 66.55 1591.5 -7.25 67.04 1588.8 -7.08 67.52 1586.2 -7.22 68.01 1583.5 -7.38 68.5 1580.9 -7.33 68.98 1578.2 -7.44 69.47 1575.6 -7.56 69.95 1572.9 -7.34 70.37 1570.6 -7.23 70.79 1568.4 -7.37 71.2 1566.1 -7.38 71.61 1563.9 -7.2 72.02 1561.6 -7.18 72.44 1559.3 -7.38 72.85 1557.1 -7.39 73.26 1553.3 -7.57 73.68 1550.1 -7.63 74.09 1547 -7.57 74.5 1543.9 -7.37 74.92 1540.8 -7.25 75.35 1537.5 -7.39 75.8 1534.2 -7.04 76.24 1530.9 -6.88 76.68 1527.6 -7.07 77.12 1524.2 -7.28 77.57 1520.9 -7.33 78.01 1517.6 -7.14 78.45 1514.2 -7.05 78.89 1510.9 -7.11 79.12 1509.3 -7.13 79.34 1504.4 -7.03 79.56 1501.5 -7.09 79.78 1498.6 -7.01 80 1495.8 -7.07 80.26 1492.4 -7.12 80.52 1489 -7.11 80.77 1485.7 -6.97 81.03 1482.3 -7.12 81.29 1479 -7.11 81.55 1475.6 -7.12 81.8 1472.3 -6.99 82.06 1468.9 -6.95 82.32 1465.6 -7.01 82.58 1462.2 -7 82.84 1458.9 -6.82 83.09 1455.5 -7.07 83.35 1452.2 -7.11 83.61 1448.8 -7.18 83.87 1445.5 -7.07 84.12 1442.1 -7.05 84.38 1438.8 -7.07 84.64 1435.4 -7.16 84.9 1432.1 -7.11 85.15 1428.9 -7 85.39 1425.7 -6.99 85.63 1422.5 -7.09 85.87 1419.4 -6.88 86.12 1416.2 -6.93 86.36 1413.1 -6.91 86.6 1409.9 -6.98 86.84 1406.8 -7.02 87.09 1403.6 -6.86 87.33 1400.5 -6.91 87.57 1397.3 -6.97 87.82 1394.1 -6.95 88.06 1391 -6.97 88.3 1387.8 -7.1 88.54 1384.7 -6.81 88.79 1381.5 -7.17 89.03 1378.4 -6.97 89.27 1375.2 -6.87 89.51 1372.1 -7.04 89.76 1368.9 -7.34 90 1365.8 -7.1 90.25 1362.6 -7.07 90.49 1359.4 -6.88 90.74 1356.2 -7.01 90.98 1353 -7.27 91.23 1349.8 -6.98 91.47 1346.6 -7 91.72 1343.4 -7.08 91.96 1340.3 -7.06 92.21 1337.1 -6.93 92.45 1333.9 -6.97 92.7 1330.7 -6.98 92.94 1327.5 -7.19 93.19 1324.3 -6.95 93.43 1321.1 -6.81 93.68 1318 -6.89 93.92 1314.8 -7 94.17 1311.6 -6.84 94.41 1308.4 -7.05 94.66 1305.2 -7.05 94.9 1302 -7.06 95.14 1298.9 -6.94 95.38 1295.8 -6.9 95.63 1292.6 -7.05 95.87 1289.5 -7.01 96.11 1286.4 -7.02 96.35 1283.3 -7.07 96.59 1280.1 -6.81 96.83 1277 -6.92 97.07 1273.9 -6.93 97.31 1270.8 -7 97.55 1267.6 -6.76 97.79 1264.5 -6.94 98.03 1261.4 -7.09 98.27 1258.3 -7.05 98.51 1255.1 -6.72 98.75 1252 -6.8 98.99 1248.9 -6.96