# Southwest Madagascar Coral Oxygen Isotope Data and SST Reconstruction from 1660-1994 #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Online_Resource: http://www.hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:16438 # # Online_Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/zinke2014-sr/zinke2014-sr-ifaty4.txt # # Archive: Corals and Sclerosponges # #-------------------------------- # Contribution_Date # Date: 2014-05-08 #-------------------------------- # Title: Southwest Madagascar Coral Oxygen Isotope Data and SST Reconstruction from 1660-1994 #-------------------------------- # Investigators: Zinke, J.; Loveday, B.; Reason, C.; Dullo, W.-C.; Kroon, D. #-------------------- # Description and Notes: # Oxygen isotope data from three cores of Porites sp. from SW Madagascar. 2 cores from Ifaty Reef 1 core from Tulear reef (Great Barrier Reef Tulear) Length: 1660-1994 Annual means March-February SST reconstruction coral composite of 3 cores: SST anomalies relative to 1961 to 1990 mean Coordinates GPS: Ifaty-4 23'08.578 S, 43'34.984 E (depth top colony at low tide 1.1m) Ifaty-1 23'09.435 S, 43'35.291 E (depth top colony at low tide 1.8m) Tulear-3 23'21.430 S, 43'37.169 E (depth top colony at low tide 0.6m) # # Indian Ocean, Agulhas Current, Mozambique Channel,coral, proxies #-------------------- # Publication # Authors: Zinke, J., B. Loveday, C. Reason, W.-C. Dullo, and D. Kroon # Journal_Name: Scientific Reports # Published_Title: Madagascar corals track sea surface temperature variability in the Agulhas Current core region over the past 334 years # Published_Date_or_Year: 2014 # Volume: 4 # Report Number: 4393 # DOI: 10.1038/srep04393 # Abstract: The Agulhas Current (AC) is the strongest western boundary current in the Southern Hemisphere and is key for weather and climate patterns, both regionally and globally. Its heat transfer into both the midlatitude South Indian Ocean and South Atlantic is of global significance. A new composite coral record (Ifaty and Tulear massive Porites corals), is linked to historical AC sea surface temperature (SST) instrumental data, showing robust correlations. The composite coral SST data start in 1660 and comprise 200 years more than the AC instrumental record. Numerical modelling exhibits that this new coral derived SST record is representative for the wider core region of the AC. AC SSTs variabilities show distinct cooling through the Little Ice Age and warming during the late 18th, 19th and 20th century, with significant decadal variability superimposed. Furthermore, the AC SSTs are teleconnected with the broad southern Indian and Atlantic Oceans, showing that the AC system ! is pivotal for inter-ocean heat exchange south of Africa. #-------------------------------- # Funding_Agency: # Funding_Agency_Name: # Grant: #-------------------------------- # Site Information: # Site_Name: Ifaty Reef # Location: Indian Ocean # Country: Madagascar # Northernmost_Latitude: -23.142967 # Southernmost_Latitude: -23.142967 # Easternmost_Longitude: 43.583067 # Westernmost_Longitude: 43.583067 # Elevation: -1.1 #-------------------------------- # Data Collection # Collection_Name: Ifaty-4 d18O Z14 # Oldest_Year: 1660 # Most_Recent_Year: 1994 # Time_Unit: AD # Core_Length: # Notes: Annual mean is from March-February. #-------------------------------- # Chronology #-------------------------------- # Variables # # Data variables follow (have double marker- "##") # Data line variables format: Variables list, one per line, shortname-tab-nine components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## age_AD age,,,year AD,,,,,N ## d18O-Por-ann delta 18O annual average,Porites sp.,,per mil VPDB,,Corals and Sclerosponges,,,N # Data: age_AD d18O-Por-ann 1660 -4.494861 1661 -4.458541667 1662 -4.541458333 1663 -4.457430417 1664 -4.375903 1665 -4.423541667 1666 -4.2868055 1667 -4.3138195 1668 -4.445972167 1669 -4.489722583 1670 -4.662152917 1671 -4.43472225 1672 -4.358263833 1673 -4.303125083 1674 -4.426875 1675 -4.343888917 1676 -4.552291667 1677 -4.51715275 1678 -4.520625 1679 -4.489652833 1680 -4.505972167 1681 -4.44284725 1682 -4.36902775 1683 -4.393055583 1684 -4.208333333 1685 -4.155555583 1686 -4.485833333 1687 -4.224166667 1688 -4.376597167 1689 -4.40541675 1690 -4.428958417 1691 -4.455416667 1692 -4.370138917 1693 -4.128750167 1694 -4.5025 1695 -4.085 1696 -4.091875083 1697 -4.328333583 1698 -4.25125 1699 -4.19979175 1700 -4.235416667 1701 -4.354166583 1702 -4.17090275 1703 -4.390763917 1704 -4.387083333 1705 -4.308055583 1706 -4.31715275 1707 -4.314166667 1708 -4.545 1709 -4.300833333 1710 -4.083958417 1711 -4.31812475 1712 -4.4177085 1713 -4.227916833 1714 -4.15916675 1715 -4.35458325 1716 -4.047916667 1717 -4.204582917 1718 -4.097708583 1719 -4.410764083 1720 -4.384653167 1721 -4.420347417 1722 -4.40854175 1723 -4.4725695 1724 -4.469791667 1725 -4.298125083 1726 -4.141319417 1727 -4.27291675 1728 -4.3575 1729 -4.3075 1730 -4.191319417 1731 -4.328888833 1732 -4.298333333 1733 -4.13166675 1734 -4.5163195 1735 -4.482916667 1736 -4.4338195 1737 -4.430069333 1738 -4.400833417 1739 -4.3899305 1740 -4.41 1741 -4.361041667 1742 -4.399444417 1743 -4.436875083 1744 -4.331250083 1745 -4.226666667 1746 -4.38284725 1747 -4.413472167 1748 -4.4038195 1749 -4.444861083 1750 -4.34625 1751 -4.371875083 1752 -4.611041667 1753 -4.421388833 1754 -4.444652833 1755 -4.462291667 1756 -4.338819417 1757 -4.386458417 1758 -4.414375 1759 -4.466875 1760 -4.266944333 1761 -4.2725 1762 -4.452361167 1763 -4.3843055 1764 -4.321944417 1765 -4.391041667 1766 -4.401458333 1767 -4.40486125 1768 -4.52083325 1769 -4.609583417 1770 -4.6555555 1771 -4.62159725 1772 -4.417986083 1773 -4.51034725 1774 -4.557569417 1775 -4.516458333 1776 -4.545625 1777 -4.490486167 1778 -4.532708333 1779 -4.335 1780 -4.300069417 1781 -4.518055667 1782 -4.65034725 1783 -4.581111083 1784 -4.432777833 1785 -4.398750167 1786 -4.452916667 1787 -4.38833325 1788 -4.41548625 1789 -4.471180917 1790 -4.5156945 1791 -4.534930583 1792 -4.505694583 1793 -4.522499833 1794 -4.59083325 1795 -4.404583333 1796 -4.520000417 1797 -4.602083417 1798 -4.63090275 1799 -4.49125 1800 -4.562083417 1801 -4.545277833 1802 -4.44951375 1803 -4.488055583 1804 -4.502430583 1805 -4.541944417 1806 -4.544027833 1807 -4.4525 1808 -4.64222225 1809 -4.736388833 1810 -4.597361083 1811 -4.6086805 1812 -4.549652833 1813 -4.502986167 1814 -4.4493055 1815 -4.503888917 1816 -4.472430583 1817 -4.43277775 1818 -4.452083333 1819 -4.512777833 1820 -4.538125 1821 -4.460833333 1822 -4.431458333 1823 -4.407430833 1824 -4.553819417 1825 -4.540833333 1826 -4.551111167 1827 -4.425138917 1828 -4.412291667 1829 -4.31625025 1830 -4.533749833 1831 -4.3789585 1832 -4.3836805 1833 -4.424444333 1834 -4.520833333 1835 -4.412152833 1836 -4.244097167 1837 -4.4381945 1838 -4.421944417 1839 -4.612152917 1840 -4.42069475 1841 -4.42666675 1842 -4.538333417 1843 -4.524166833 1844 -4.49972225 1845 -4.438888917 1846 -4.330833333 1847 -4.285833417 1848 -4.448749833 1849 -4.393333417 1850 -4.322291667 1851 -4.416041667 1852 -4.412916583 1853 -4.407013917 1854 -4.448889083 1855 -4.572847167 1856 -4.68027775 1857 -4.63895875 1858 -4.590000333 1859 -4.546527667 1860 -4.51541675 1861 -4.32 1862 -4.435624917 1863 -4.478819417 1864 -4.418263917 1865 -4.441875083 1866 -4.49486125 1867 -4.538263833 1868 -4.450486083 1869 -4.507916833 1870 -4.631666667 1871 -4.652291583 1872 -4.561180583 1873 -4.6025 1874 -4.688750083 1875 -4.612083 1876 -4.466666667 1877 -4.458958333 1878 -4.521736167 1879 -4.5381945 1880 -4.58 1881 -4.51625 1882 -4.55833325 1883 -4.401875083 1884 -4.517013833 1885 -4.647083083 1886 -4.626458333 1887 -4.515763917 1888 -4.520069417 1889 -4.57125 1890 -4.696874917 1891 -4.498750083 1892 -4.522708333 1893 -4.638888917 1894 -4.691944667 1895 -4.246458667 1896 -4.576319417 1897 -4.51659725 1898 -4.383958417 1899 -4.22854175 1900 -4.4800695 1901 -4.42625 1902 -4.263263917 1903 -4.483680583 1904 -4.551875 1905 -4.472500167 1906 -4.558958333 1907 -4.29715275 1908 -4.518958333 1909 -4.477361083 1910 -4.31972225 1911 -4.1763195 1912 -4.266875 1913 -4.36374975 1914 -4.241666583 1915 -4.330000083 1916 -4.406875167 1917 -4.461875417 1918 -4.073264083 1919 -4.27798625 1920 -4.456041833 1921 -4.362569833 1922 -4.390347333 1923 -4.388333667 1924 -4.3898615 1925 -4.4881255 1926 -4.343541917 1927 -4.318125 1928 -4.312083833 1929 -4.39569475 1930 -4.255833417 1931 -4.37486125 1932 -4.34736125 1933 -4.247361417 1934 -4.409375167 1935 -4.3325 1936 -4.5163195 1937 -4.215069583 1938 -4.44152775 1939 -4.52 1940 -4.563333333 1941 -4.543888833 1942 -4.5139585 1943 -4.515069833 1944 -4.333750417 1945 -4.350903083 1946 -4.435625417 1947 -4.472569667 1948 -4.4400005 1949 -4.486041583 1950 -4.418958167 1951 -4.392917 1952 -4.556389 1953 -4.46277775 1954 -4.487639083 1955 -4.45986125 1956 -4.51680575 1957 -4.544722333 1958 -4.661666917 1959 -4.5578475 1960 -4.535000083 1961 -4.496111417 1962 -4.605069667 1963 -4.417639167 1964 -4.429653 1965 -4.478403083 1966 -4.452777917 1967 -4.48687525 1968 -4.270833333 1969 -4.414166667 1970 -4.3525 1971 -4.391666667 1972 -4.311944417 1973 -4.396111083 1974 -4.412500167 1975 -4.38027825 1976 -4.38250075 1977 -4.37958375 1978 -4.352500333 1979 -4.319792 1980 -4.462499917 1981 -4.300416667 1982 -4.432361083 1983 -4.5293055 1984 -4.429652917 1985 -4.453958417 1986 -4.40604175 1987 -4.461319833 1988 -4.480764083 1989 -4.452777833 1990 -4.419166667 1991 -4.480139083 1992 -4.52708375 1993 -4.48652825 1994 -4.403333667