/* DATA DESCRIPTION:
Citation:	Sigl, Michael; McConnell, Joseph R; Hörhold, Maria (2024): Annual-resolved non-sea-salt sulfur concentrations from four Greenland ice-core stack, 1731 and 1996 CE [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.967073, 
	In: Sigl, M et al. (2024): Sulfur and volcanic sulfate deposition from 6 ice cores in Greenland [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.967071
Abstract:	Annual-resolved non-sea-salt sulfur concentrations from a four ice-core stack, NEEM-2011-S1 (Sigl et al., 2013), NGRIP1 (Plummer et al., 2012), TUNU2013 (Sigl et al., 2015) and B19, between 1731 and 1996 CE including volcanic samples and with volcanic samples replaced by a 11-year running median.
Keyword(s):	Greenland; Ice core; Iceland; medieval climate anomaly; sulfate; Sulfur; volcanic activity; Volcanic aerosol
Related to:	Gabriel, Imogen; Plunkett, Gill; Abbott, Peter M; Behrens, Melanie; Burke, Andrea; Chellman, Nathan J; Cook, Eliza; Fleitmann, Dominik; Hörhold, Maria; Hutchison, William; McConnell, Joseph R; Óladóttir, Bergrún A; Preiser-Kapeller, Johannes; Sliwinski, Jakub T; Sugden, Patrick; Twarloh, Birthe; Sigl, Michael (2024): Decadal-to-centennial increases of volcanic aerosols from Iceland challenge the concept of a Medieval Quiet Period. Communications Earth & Environment, 5(1), 194, https://doi.org/10.1038/s43247-024-01350-6
References:	McConnell, Joseph R; Wilson, Andrew I; Stohl, Andreas; Arienzo, Monica M; Chellman, Nathan J; Eckhardt, Sabine; Thompson, Elisabeth M; Pollard, A Mark; Steffensen, Jørgen Peder (2018): Lead pollution recorded in Greenland ice indicates European emissions tracked plagues, wars, and imperial expansion during antiquity. Proceedings of the National Academy of Sciences of the United States of America, 115(22), 5726-5731, https://doi.org/10.1073/pnas.1721818115
	Plummer, C T; Curran, Mark A J; van Ommen, Tas D; Rasmussen, Sune Olander; Moy, Andrew D; Vance, Tessa R; Clausen, Henrik Brink; Vinther, Bo Møllesøe; Mayewski, P A (2012): An independently dated 2000-yr volcanic record from Law Dome, East Antarctica, including a new perspective on the dating of the 1450s CE eruption of Kuwae, Vanuatu. Climate of the Past, 8(6), 1929-1940, https://doi.org/10.5194/cp-8-1929-2012
	Sigl, Michael; McConnell, Joseph R; Layman, Lawrence; Maselli, Olivia J; McGwire, Ken; Pasteris, Daniel R; Dahl-Jensen, Dorthe; Steffensen, Jørgen Peder; Vinther, Bo Møllesøe; Edwards, Ross; Mulvaney, Robert; Kipfstuhl, Sepp (2013): A new bipolar ice core record of volcanism from WAIS Divide and NEEM and implications for climate forcing of the last 2000 years. Journal of Geophysical Research: Atmospheres, 118(3), 1151-1169, https://doi.org/10.1029/2012JD018603
	Sigl, Michael; Winstrup, Mai; McConnell, Joseph R; Welten, Kees C; Plunkett, Gill; Ludlow, F; Büntgen, Ulf; Caffee, Marc W; Chellman, Nathan J; Dahl-Jensen, Dorthe; Fischer, H; Kipfstuhl, Sepp; Kostick, C; Maselli, Olivia J; Mekhaldi, Florian; Mulvaney, Robert; Muscheler, Raimund; Pasteris, Daniel R; Pilcher, John R; Salzer, Matthew W; Schüpbach, Simon; Steffensen, J P; Vinther, Bo Møllesøe; Woodruff, Thomas E (2015): Timing and climate forcing of volcanic eruptions for the past 2,500 years. Nature, 523(7562), 543-549, https://doi.org/10.1038/nature14565
Funding:	European Research Council (ERC), grant/award no. 820047: Timing of Holocene volcanic eruptions and their radiative aerosol forcing (THERA) (URI: doi:10.3030/820047)
Coverage:	MEDIAN LATITUDE: 77.145150 * MEDIAN LONGITUDE: -40.914450 * SOUTH-BOUND LATITUDE: 75.100000 * WEST-BOUND LONGITUDE: -51.060000 * NORTH-BOUND LATITUDE: 78.030000 * EAST-BOUND LONGITUDE: -33.880000
	DATE/TIME START: 1993-01-01T00:00:00 * DATE/TIME END: 1997-08-31T00:00:00
	MINIMUM ELEVATION: 2100.0 m * MAXIMUM ELEVATION: 2917.0 m
Event(s):	NEEM-2011-S1 * LATITUDE: 77.450000 * LONGITUDE: -51.060000 * ELEVATION: 2545.0 m * Penetration: 410 m * LOCATION: Greenland * METHOD/DEVICE: Ice drill (ICEDRILL) * COMMENT: Drilled in 2011, 200 m from the main NEEM borehole
	NGRIP1 (NorthGRIP) * LATITUDE: 75.100000 * LONGITUDE: -42.320000 * DATE/TIME START: 1996-07-01T00:00:00 * DATE/TIME END: 1997-08-31T00:00:00 * ELEVATION: 2917.0 m * Recovery: 1371.8 * LOCATION: Greenland * METHOD/DEVICE: Ice drill (ICEDRILL) * COMMENT: Ice thickness is 3085 m at the drill site.
	ngt19C93.2 (B19) * LATITUDE: 78.000600 * LONGITUDE: -36.397800 * DATE/TIME: 1993-01-01T00:00:00 * ELEVATION: 2234.0 m * Recovery: 150.4 * LOCATION: Greenland * CAMPAIGN: NorthGreenlandTraverse * BASIS: Sampling/drilling from ice * METHOD/DEVICE: Ice drill (ICEDRILL)
	Tunu13 (TUNU2013) (URI: https://icecores.org/inventory/tunu) * LATITUDE: 78.030000 * LONGITUDE: -33.880000 * ELEVATION: 2100.0 m * LOCATION: Greenland * METHOD/DEVICE: Ice drill (ICEDRILL) * COMMENT: Drilling year: 2013
Parameter(s):	Age [a AD/CE] (Age) * PI: Sigl, Michael (https://orcid.org/0000-0002-9028-9703, michael.sigl@climate.unibe.ch) * COMMENT: Midpoint
	AGE [ka BP] (Age) * GEOCODE * PI: Sigl, Michael (https://orcid.org/0000-0002-9028-9703, michael.sigl@climate.unibe.ch)
	Sulfur, non-sea-salt [µg/kg] (nssS) * PI: Sigl, Michael (https://orcid.org/0000-0002-9028-9703, michael.sigl@climate.unibe.ch) * COMMENT: Stack (N=4)
	Sulfur, non-sea-salt [µg/kg] (nssS) * PI: Sigl, Michael (https://orcid.org/0000-0002-9028-9703, michael.sigl@climate.unibe.ch) * COMMENT: Stack (N=4) all volcanic samples replaced by 11-yr running median
License:	Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/)
Status:	Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels)
Size:	797 data points
*/
Age [a AD/CE] (Midpoint)	Age [ka BP]	nssS [µg/kg] (Stack (N=4))	nssS [µg/kg] (Stack (N=4) all volcanic samp...)
1996.5	-0.0465	26.9	26.9
1995.5	-0.0455	29.0	29.0
1994.5	-0.0445	25.1	25.1
1993.5	-0.0435	27.0	27.0
1992.5	-0.0425	38.6	38.6
1991.5	-0.0415	34.2	34.2
1990.5	-0.0405	47.2	47.2
1989.5	-0.0395	62.0	62.0
1988.5	-0.0385	41.6	41.6
1987.5	-0.0375	30.6	30.6
1986.5	-0.0365	48.4	48.4
1985.5	-0.0355	36.5	36.5
1984.5	-0.0345	52.4	52.4
1983.5	-0.0335	48.9	48.9
1982.5	-0.0325	41.4	41.4
1981.5	-0.0315	49.9	49.9
1980.5	-0.0305	62.0	62.0
1979.5	-0.0295	43.9	43.9
1978.5	-0.0285	49.2	49.2
1977.5	-0.0275	43.0	43.0
1976.5	-0.0265	47.9	47.9
1975.5	-0.0255	53.6	53.6
1974.5	-0.0245	58.0	58.0
1973.5	-0.0235	75.3	75.3
1972.5	-0.0225	51.2	51.2
1971.5	-0.0215	59.7	59.7
1970.5	-0.0205	58.7	58.7
1969.5	-0.0195	61.8	61.8
1968.5	-0.0185	50.0	50.0
1967.5	-0.0175	52.4	52.4
1966.5	-0.0165	60.4	60.4
1965.5	-0.0155	43.8	43.8
1964.5	-0.0145	46.3	46.3
1963.5	-0.0135	46.2	46.2
1962.5	-0.0125	40.1	40.1
1961.5	-0.0115	43.6	43.6
1960.5	-0.0105	34.3	34.3
1959.5	-0.0095	32.2	32.2
1958.5	-0.0085	42.5	42.5
1957.5	-0.0075	42.5	42.5
1956.5	-0.0065	33.9	33.9
1955.5	-0.0055	28.3	28.3
1954.5	-0.0045	30.0	30.0
1953.5	-0.0035	28.9	28.9
1952.5	-0.0025	33.8	33.8
1951.5	-0.0015	49.9	49.9
1950.5	-0.0005	41.1	41.1
1949.5	0.0005	27.2	27.2
1948.5	0.0015	34.0	34.0
1947.5	0.0025	42.8	42.8
1946.5	0.0035	25.9	25.9
1945.5	0.0045	27.1	27.1
1944.5	0.0055	34.7	34.7
1943.5	0.0065	37.8	37.8
1942.5	0.0075	29.8	29.8
1941.5	0.0085	26.3	26.3
1940.5	0.0095	22.5	22.5
1939.5	0.0105	23.6	23.6
1938.5	0.0115	26.8	26.8
1937.5	0.0125	29.9	29.9
1936.5	0.0135	27.7	27.7
1935.5	0.0145	23.4	23.4
1934.5	0.0155	20.9	20.9
1933.5	0.0165	16.7	16.7
1932.5	0.0175	17.9	17.9
1931.5	0.0185	26.2	26.2
1930.5	0.0195	27.5	27.5
1929.5	0.0205	28.3	28.3
1928.5	0.0215	24.9	24.9
1927.5	0.0225	32.0	32.0
1926.5	0.0235	27.3	27.3
1925.5	0.0245	37.5	37.5
1924.5	0.0255	30.2	30.2
1923.5	0.0265	26.3	26.3
1922.5	0.0275	22.2	22.2
1921.5	0.0285	25.4	25.4
1920.5	0.0295	27.8	27.8
1919.5	0.0305	31.7	31.7
1918.5	0.0315	37.1	37.1
1917.5	0.0325	28.2	28.2
1916.5	0.0335	23.0	23.0
1915.5	0.0345	23.7	23.7
1914.5	0.0355	30.6	25.6
1913.5	0.0365	52.9	25.6
1912.5	0.0375	38.4	24.5
1911.5	0.0385	22.2	22.2
1910.5	0.0395	22.6	22.6
1909.5	0.0405	27.5	27.5
1908.5	0.0415	29.7	29.7
1907.5	0.0425	25.4	25.4
1906.5	0.0435	24.5	24.5
1905.5	0.0445	31.6	31.6
1904.5	0.0455	30.3	30.3
1903.5	0.0465	21.0	21.0
1902.5	0.0475	16.0	16.0
1901.5	0.0485	14.9	14.9
1900.5	0.0495	15.3	15.3
1899.5	0.0505	16.4	16.4
1898.5	0.0515	13.1	13.1
1897.5	0.0525	14.0	14.0
1896.5	0.0535	15.0	15.0
1895.5	0.0545	18.9	18.9
1894.5	0.0555	21.4	21.4
1893.5	0.0565	17.9	17.9
1892.5	0.0575	16.7	16.7
1891.5	0.0585	13.2	13.2
1890.5	0.0595	14.3	14.3
1889.5	0.0605	13.0	13.0
1888.5	0.0615	16.2	16.2
1887.5	0.0625	14.5	14.5
1886.5	0.0635	17.8	17.8
1885.5	0.0645	27.3	14.5
1884.5	0.0655	34.8	14.5
1883.5	0.0665	15.6	15.6
1882.5	0.0675	20.3	20.3
1881.5	0.0685	11.7	11.7
1880.5	0.0695	10.9	10.9
1879.5	0.0705	12.4	12.4
1878.5	0.0715	15.0	15.0
1877.5	0.0725	13.0	13.0
1876.5	0.0735	11.3	11.3
1875.5	0.0745	17.5	17.5
1874.5	0.0755	15.5	15.5
1873.5	0.0765	26.2	13.4
1872.5	0.0775	18.0	18.0
1871.5	0.0785	13.5	13.5
1870.5	0.0795	13.2	13.2
1869.5	0.0805	12.1	12.1
1868.5	0.0815	12.0	12.0
1867.5	0.0825	10.6	10.6
1866.5	0.0835	12.1	12.1
1865.5	0.0845	11.6	11.6
1864.5	0.0855	14.5	14.5
1863.5	0.0865	23.3	15.4
1862.5	0.0875	16.5	16.5
1861.5	0.0885	16.7	16.7
1860.5	0.0895	18.3	18.3
1859.5	0.0905	16.5	16.5
1858.5	0.0915	16.4	16.4
1857.5	0.0925	15.1	15.1
1856.5	0.0935	19.9	16.0
1855.5	0.0945	12.2	12.2
1854.5	0.0955	16.0	16.0
1853.5	0.0965	19.5	11.5
1852.5	0.0975	10.9	10.9
1851.5	0.0985	10.9	10.9
1850.5	0.0995	11.5	11.5
1849.5	0.1005	10.2	10.2
1848.5	0.1015	10.7	10.7
1847.5	0.1025	13.9	13.9
1846.5	0.1035	18.4	18.4
1845.5	0.1045	17.3	17.3
1844.5	0.1055	14.1	14.1
1843.5	0.1065	14.5	14.5
1842.5	0.1075	12.3	12.3
1841.5	0.1085	11.8	11.8
1840.5	0.1095	11.5	11.5
1839.5	0.1105	11.5	11.5
1838.5	0.1115	14.7	14.7
1837.5	0.1125	21.4	12.0
1836.5	0.1135	31.9	12.9
1835.5	0.1145	22.6	12.8
1834.5	0.1155	14.0	14.0
1833.5	0.1165	22.9	14.3
1832.5	0.1175	41.8	13.5
1831.5	0.1185	17.4	17.4
1830.5	0.1195	10.4	10.4
1829.5	0.1205	12.5	12.5
1828.5	0.1215	15.7	15.7
1827.5	0.1225	13.1	13.1
1826.5	0.1235	14.8	14.8
1825.5	0.1245	16.1	16.1
1824.5	0.1255	14.8	14.8
1823.5	0.1265	23.7	14.8
1822.5	0.1275	18.6	14.1
1821.5	0.1285	13.4	13.4
1820.5	0.1295	11.5	11.5
1819.5	0.1305	12.1	12.1
1818.5	0.1315	17.7	17.7
1817.5	0.1325	30.6	14.2
1816.5	0.1335	76.0	14.2
1815.5	0.1345	23.4	15.1
1814.5	0.1355	16.9	16.9
1813.5	0.1365	14.2	14.2
1812.5	0.1375	16.0	16.0
1811.5	0.1385	24.2	12.9
1810.5	0.1395	58.9	14.2
1809.5	0.1405	19.3	15.1
1808.5	0.1415	11.6	11.6
1807.5	0.1425	9.6	9.6
1806.5	0.1435	11.4	11.4
1805.5	0.1445	18.6	18.6
1804.5	0.1455	16.8	16.8
1803.5	0.1465	9.2	9.2
1802.5	0.1475	10.6	10.6
1801.5	0.1485	12.7	12.7
1800.5	0.1495	15.3	15.3
1799.5	0.1505	11.2	11.2
1798.5	0.1515	10.9	10.9
1797.5	0.1525	14.5	14.5
1796.5	0.1535	14.9	14.9
1795.5	0.1545	13.1	13.1
1794.5	0.1555	11.1	11.1
1793.5	0.1565	11.3	11.3
1792.5	0.1575	11.7	11.7
1791.5	0.1585	10.4	10.4
1790.5	0.1595	12.9	12.9
1789.5	0.1605	12.8	12.8
1788.5	0.1615	10.6	10.6
1787.5	0.1625	12.5	12.5
1786.5	0.1635	15.3	15.3
1785.5	0.1645	10.4	10.4
1784.5	0.1655	17.1	17.1
1783.5	0.1665	205.1	12.5
1782.5	0.1675	14.7	14.7
1781.5	0.1685	9.1	9.1
1780.5	0.1695	12.0	12.0
1779.5	0.1705	13.6	13.6
1778.5	0.1715	12.6	12.6
1777.5	0.1725	13.7	13.7
1776.5	0.1735	10.4	10.4
1775.5	0.1745	8.9	8.9
1774.5	0.1755	9.5	9.5
1773.5	0.1765	9.9	9.9
1772.5	0.1775	9.9	9.9
1771.5	0.1785	10.1	10.1
1770.5	0.1795	16.1	16.1
1769.5	0.1805	12.0	12.0
1768.5	0.1815	12.8	12.8
1767.5	0.1825	13.5	13.5
1766.5	0.1835	23.0	12.8
1765.5	0.1845	11.8	11.8
1764.5	0.1855	12.6	12.6
1763.5	0.1865	14.5	14.5
1762.5	0.1875	20.3	11.8
1761.5	0.1885	15.0	15.0
1760.5	0.1895	10.1	10.1
1759.5	0.1905	10.9	10.9
1758.5	0.1915	8.9	8.9
1757.5	0.1925	9.1	9.1
1756.5	0.1935	14.0	14.0
1755.5	0.1945	19.9	9.2
1754.5	0.1955	12.7	12.7
1753.5	0.1965	9.3	9.3
1752.5	0.1975	8.0	8.0
1751.5	0.1985	8.9	8.9
1750.5	0.1995	9.0	9.0
1749.5	0.2005	10.9	10.9
1748.5	0.2015	10.2	10.2
1747.5	0.2025	8.2	8.2
1746.5	0.2035	12.2	12.2
1745.5	0.2045	12.2	12.2
1744.5	0.2055	8.9	8.9
1743.5	0.2065	11.5	11.5
1742.5	0.2075	12.0	12.0
1741.5	0.2085	17.3	17.3
1740.5	0.2095	25.7	12.1
1739.5	0.2105	24.3	12.3
1738.5	0.2115	16.3	16.3
1737.5	0.2125	11.2	11.2
1736.5	0.2135	12.6	12.6
1735.5	0.2145	21.7	12.8
1734.5	0.2155	13.0	13.0
1733.5	0.2165	11.6	11.6
1732.5	0.2175	14.8	14.8
1731.5	0.2185	22.4