# ITASE 230 Year Antarctic Ice Core Snow Accumulation Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/22710 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/itase-gv5accum.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Ice Core # # Dataset DOI: # # Parameter_Keywords: accumulation #-------------------- # Contribution_Date # Date: 2017-09-22 #-------------------- # File_Last_Modified_Date # Date: 2017-09-22 #-------------------- # Title # Study_Name: ITASE 230 Year Antarctic Ice Core Snow Accumulation Data #-------------------- # Investigators # Investigators: Frezzotti, M.; Urbini, S.; Proposito, M.; Scarchilli, C.; Gandolfi, S. #-------------------- # Description_Notes_and_Keywords # Description: Snow accumulation data from 3 ITASE ice cores along a north-south transect collected in the Talos Dome area of East Antarctica. # No thinning function applied. Upstream glaciology condition from field data or/and satellite survey (DEM, Landsat etc.): si. # Upstream glaciology influence the SMB stratigraphy: No #-------------------- # Publication # Authors: Massimo Frezzotti, Stefano Urbini, Marco Proposito, Claudio Scarchilli, Stefano Gandolfi # Published_Date_or_Year: 2007-06-13 # Published_Title: Spatial and temporal variability of surface mass balance near Talos Dome, East Antarctica # Journal_Name: Journal of Geophysical Research: Earth Surface # Volume: 112 # Edition: F02032 # Issue: F2 # Pages: # Report_Number: # DOI: 10.1029/2006JF000638 # Online_Resource: http://onlinelibrary.wiley.com/doi/10.1029/2006JF000638/abstract # Full_Citation: # Abstract: Predictions concerning Antarctica's contribution to sea level change have been hampered by poor knowledge of surface mass balance. Snow accumulation is the most direct climate indicator and has important implications for paleoclimatic reconstruction from ice cores. Snow accumulation measurements (stake, core, snow radar) taken along a 500-km transect crossing Talos Dome (East Antarctica) have been used to assess accumulation signals and the representativeness of ice core records. Stake readings show that accumulation hiatuses can occur at sites with accumulation rates below 120 kg m-2 yr-1. Differences between cores and stakes can lead to statistical misidentification of annual layers determined from seasonal signals at sites with accumulation rates below 200 kg m-2 yr-1 because of nondetection of higher and lower values. Achieving ±10% accuracy in the reconstruction of snow accumulation from single cores requires high accumulation (750 kg m-2 yr-1). Low-accumulation sites are representative if cumulative rates computed over several years are used to reach the 750 kg m-2 yr-1 threshold. Temporal variability of accumulation over the last two centuries shows no significant increase in accumulation. Wind-driven processes are a fundamental component of surface mass balance. Spatial variations in accumulation are well correlated with surface slope changes along the wind direction and may exceed 200 kg m-2 yr-1 within 1 km. Wind-driven sublimation rates are less than 50 kg m-2 yr-1 in plateau areas and up to 260 kg m-2 yr-1 in slope areas and account for 20-75% of precipitation, whereas depositional features are negligible in surface mass balance. #------------------ # Funding_Agency # Funding_Agency_Name: PNRA # Grant: ITASE2001 #------------------ # Site_Information # Site_Name: GV5 # Location: Antarctica # Country: # Northernmost_Latitude: -71.89 # Southernmost_Latitude: -71.89 # Easternmost_Longitude: 158.54 # Westernmost_Longitude: 158.54 # Elevation: 2184 m #------------------ # Data_Collection # Collection_Name: GV5Accum # Earliest_Year: 1777 # Most_Recent_Year: 2004 # Time_Unit: AD # Core_Length: 48 # Notes: mean annual accumulation rate 129 mm w.e./year; 2002-2004 values from stake measurements #------------------ # Chronology_Information # Chronology: # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: one per line, shortname-tab-variable components (what, material, error, units, seasonality, data type,detail, method, C or N for Character or Numeric data, free text) # ## age_AD age, , , AD, , , , ,N, ## accum accumulation rate, snow, , kg/m2/yr, annual, ice core, annual counting by (nssSO4 etc.),,N, # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # age_AD accum 2004 151 2003 109 2002 145 2001 92 2000 119 1999 176 1998 123 1997 143 1996 250 1995 79 1994 144 1993 108 1992 106 1991 146 1990 101 1989 66 1988 108 1987 148 1986 167 1985 131 1984 111 1983 214 1982 85 1981 73 1980 188 1979 80 1978 164 1977 162 1976 133 1975 73 1974 137 1973 94 1972 143 1971 86 1970 97 1969 97 1968 147 1967 141 1966 119 1965 103 1964 81 1963 154 1962 153 1961 96 1960 125 1959 125 1958 119 1957 153 1956 117 1955 157 1954 162 1953 117 1952 126 1951 172 1950 154 1949 95 1948 107 1947 72 1946 178 1945 61 1944 115 1943 164 1942 82 1941 119 1940 169 1939 156 1938 83 1937 100 1936 146 1935 49 1934 98 1933 106 1932 118 1931 175 1930 121 1929 127 1928 90 1927 90 1926 185 1925 112 1924 152 1923 138 1922 102 1921 161 1920 124 1919 186 1918 137 1917 75 1916 125 1915 139 1914 102 1913 102 1912 178 1911 88 1910 139 1909 122 1908 126 1907 175 1906 152 1905 170 1904 175 1903 89 1902 113 1901 77 1900 226 1899 168 1898 158 1897 150 1896 232 1895 174 1894 82 1893 137 1892 147 1891 145 1890 121 1889 158 1888 122 1887 159 1886 162 1885 120 1884 78 1883 143 1882 107 1881 92 1880 145 1879 126 1878 94 1877 96 1876 202 1875 168 1874 196 1873 164 1872 148 1871 94 1870 120 1869 215 1868 123 1867 68 1866 163 1865 162 1864 190 1863 149 1862 108 1861 136 1860 204 1859 164 1858 123 1857 139 1856 168 1855 84 1854 170 1853 111 1852 97 1851 126 1850 126 1849 168 1848 82 1847 82 1846 68 1845 82 1844 191 1843 181 1842 126 1841 111 1840 67 1839 108 1838 55 1837 179 1836 70 1835 111 1834 111 1833 70 1832 55 1831 70 1830 130 1829 144 1828 29 1827 190 1826 72 1825 174 1824 100 1823 113 1822 71 1821 158 1820 100 1819 130 1818 174 1817 85 1816 73 1815 72 1814 58 1813 260 1812 118 1811 148 1810 142 1809 86 1808 115 1807 57 1806 98 1805 191 1804 104 1803 133 1802 62 1801 89 1800 89 1799 133 1798 145 1797 112 1796 175 1795 85 1794 105 1793 222 1792 121 1791 90 1790 136 1789 170 1788 124 1787 148 1786 159 1785 194 1784 136 1783 212 1782 197 1781 108 1780 176 1779 116 1778 104 1777 106