/* DATA DESCRIPTION: Citation: Sigl, Michael; McConnell, Joseph R; Severi, Mirko; Fischer, Hubertus (2021): Reconstructed volcanic stratospheric sulfur injections and volcanic sulfate deposition over Greenland and Antarctica for the Bølling-Allerød/Younger Dryas transition (13.20-12.80 ka BP). PANGAEA, https://doi.org/10.1594/PANGAEA.930557 Abstract: We used four polar ice cores - two from Greenland and two from Antarctica - to investigate volcanic sulphate deposition on polar ice sheets between 13,200 and 12,800 years BP. From Greenland, we employed discrete sulphate measurements from the Greenland Ice Sheet Project Two (GISP2; 72.97°N, 38.80°W) ice core (Mayewski et al., 1997) as well as sulphate measurements using Continuous Flow Analysis (CFA) (Bigler et al., 2002; Bigler et al., 2011) from the North Greenland Ice Core Project (NGRIP; 75.10°N, 42.33°W; 2941 m a.s.l.). From Antarctica, we used Fast Ion Chromatography (FIC) measurements from the EPICA Dronning Maud Land (EDML; 75.00°S, 00.07°E; 2892 m a.s.l.) ice core (Severi et al., 2007) as well as sulphur measurements (converted to sulphate) using Continuous Flow Analysis (CFA) coupled to an inductively coupled plasma mass spectrometer (ICPMS) (McConnell et al., 2017) from the WAIS (West Antarctic Ice Sheet) Divide ice core project (WD; 79.48°S, 112.11°W, 1766 m a.s.l.) (Sigl et al., 2016). The time resolution of the data range between multi-annual (i.e. 4 years) for GISP2 to sub-annual for NGRIP and WD. Based on these ice cores and by applying the age synchronization lattice previously developed for these cores (Seierstad et al., 2014; Buizert et al., 2018; Svensson et al., 2020) with linear interpolation between the volcanic markers, we reconstructed volcanic sulphate deposition over Greenland and Antarctica using established methods (Sigl et al., 2014; Sigl et al., 2015). Using the methodology developed and applied to a similar network of ice cores over the past 2,500 years (Toohey & Sigl 2017) we further estimated stratospheric sulphur injection (SSI) from 30 eruptions with SSI in excess of 1 Tg S. Keyword(s): Antarctica; Bølling-Allerød/Younger Dryas transition; climate forcing; Glacial; Greenland; ice cores; Laacher See Eruption; Stratosphere; stratospheric aerosol; sulfate aerosol; Volcanic aerosol Supplement to: Abbott, Peter M; Niemeier, U; Timmreck, Claudia; Riede, F; McConnell, Joseph R; Severi, Mirko; Svensson, Anders M; Toohey, Matthew; Reinig, Frederick; Sigl, Michael (in press): Volcanic climate forcing preceding the inception of the Younger Dryas: implications for tracing the Laacher see eruption. Quaternary Science Reviews Related to: Bigler, Matthias; Svensson, Anders M; Kettner, E; Vallelonga, Paul T; Nielsen, Maibritt; Steffensen, Jørgen Peder (2011): Optimization of High-Resolution Continuous Flow Analysis for Transient Climate Signals in Ice Cores. Environmental Science & Technology, 45(10), 4483-4489, https://doi.org/10.1021/es200118j Bigler, Matthias; Wagenbach, Dietmar; Fischer, Hubertus; Kipfstuhl, Josef; Miller, Heinrich; Sommer, Stefan; Stauffer, Bernhard (2002): Sulphate record from a northeast Greenland ice core over the last 1200 years based on continuous flow analysis. Annals of Glaciology, 35, 250-256, https://doi.org/10.3189/172756402781817158 Buizert, Christo; Sigl, Michael; Severi, Mirko; Markle, Bradley R; Wettstein, Justin J; McConnell, Joseph R; Pedro, Joel B; Sodemann, Harald; Goto-Azuma, Kumiko; Kawamura, Kenji; Fujita, Shuji; Motoyama, Hideaki; Hirabayashi, Motohiro; Uemura, Ryu; Stenni, Barbara; Parrenin, Frédéric; He, Feng; Fudge, Tyler J; Steig, Eric J (2018): Abrupt ice-age shifts in southern westerly winds and Antarctic climate forced from the north. Nature, 563(7733), 681-685, https://doi.org/10.1038/s41586-018-0727-5 Mayewski, Paul Andrew; Meeker, L D; Twickler, Mark S; Whitlow, Sallie I; Yang, Q; Lyons, William B; Prentice, M (1997): Major features and forcing of high-latitude northern hemisphere atmospheric circulation using a 110,000-year-long glaciochemical series. Journal of Geophysical Research: Oceans, 102(C12), 26345-26366, https://doi.org/10.1029/96JC03365 McConnell, Joseph R; Burke, Andrea; Dunbar, Nelia W; Köhler, Peter; Thomas, Jennie L; Arienzo, Monica M; Chellman, Nathan J; Maselli, Olivia J; Sigl, Michael; Adkins, Jess F; Baggenstos, Daniel; Burkhart, John F; Brook, Edward J; Buizert, Christo; Cole-Dai, Jihong; Fudge, Tyler J; Knorr, Gregor; Graf, Hans-Friedrich; Grieman, Mackenzie M; Iverson, Nels; McGwire, Kenneth C; Mulvaney, Robert; Paris, Guillaume; Rhodes, Rachael H; Saltzman, Eric S; Severinghaus, Jeffrey P; Steffensen, Jørgen Peder; Taylor, Kendrick C; Winckler, Gisela (2017): Synchronous volcanic eruptions and abrupt climate change ∼17.7 ka plausibly linked by stratospheric ozone depletion. Proceedings of the National Academy of Sciences, 114(38), 10035-10040, https://doi.org/10.1073/pnas.1705595114 Reinig, Frederick; Wacker, Lukas; Jöris, Olaf; Oppenheimer, Clive; Guidobaldi, Giulia; Nievergelt, Daniel; Adolphi, Florian; Cherubini, Paolo; Engels, Stefan; Esper, Jan; Land, Alexander; Lane, Christine S; Pfanz, Hardy; Remmele, Sabine; Sigl, Michael; Sookdeo, Adam; Büntgen, Ulf (2021): Precise date for the Laacher See eruption synchronizes the Younger Dryas. Nature, 595, 66-69, https://doi.org/10.1038/s41586-021-03608-x Seierstad, Inger K; Abbott, Peter M; Bigler, Matthias; Blunier, Thomas; Bourne, Anna J; Brook, Edward J; Buchardt, Susanne L; Buizert, Christo; Clausen, Henrik Brink; Cook, Eliza; Dahl-Jensen, Dorthe; Davies, Siwan M; Guillevic, Myriam; Johnsen, Sigfús Jóhann; Pedersen, Desirée S; Popp, Trevor J; Rasmussen, Sune Olander; Severinghaus, Jeffrey P; Svensson, Anders M; Vinther, Bo Møllesøe (2014): Consistently dated records from the Greenland GRIP, GISP2 and NGRIP ice cores for the past 104 ka reveal regional millennial-scale δ18O gradients with possible Heinrich event imprint. Quaternary Science Reviews, 106, 29-46, https://doi.org/10.1016/j.quascirev.2014.10.032 Severi, Mirko; Becagli, Silvia; Castellano, Emiliano; Morganti, Andrea; Traversi, Rita; Udisti, Roberto; Ruth, Urs; Fischer, Hubertus; Huybrechts, Philippe; Wolff, Eric W; Parrenin, Frédéric; Kaufmann, Patrik R; Lambert, Fabrice; Steffensen, Jørgen Peder (2007): Synchronisation of the EDML and EDC ice cores for the last 52 kyr by volcanic signature matching. Climate of the Past, 3, 367-374, https://doi.org/10.5194/cp-3-367-2007 Sigl, Michael; Fudge, Tyler J; Winstrup, Mai; Cole-Dai, Jihong; Ferris, David G; McConnell, Joseph R; Taylor, Kendrick C; Welten, Kees C; Woodruff, Thomas E; Adolphi, Florian; Bisiaux, Marion M; Brook, Edward J; Buizert, Christo; Caffee, Marc W; Dunbar, Nelia W; Edwards, Ross L; Geng, Lei; Iverson, Nels; Koffman, Bess G; Layman, Lawrence; Maselli, Olivia J; McGwire, Kenneth C; Muscheler, Raimund; Nishiizumi, Kunihiko; Pasteris, Daniel R; Rhodes, Rachael H; Sowers, Todd A (2016): The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP). Climate of the Past, 12(3), 769-786, https://doi.org/10.5194/cp-12-769-2016 Sigl, Michael; McConnell, Joseph R; Toohey, Matthew; Curran, Mark; Das, Sarah B; Edwards, Ross; Isaksson, Elisabeth; Kawamura, Kenji; Kipfstuhl, Sepp; Krüger, Kirstin; Layman, Lawrence; Maselli, Olivia J; Motizuki, Yuko; Motoyama, Hideaki; Pasteris, Daniel R; Severi, Mirko (2014): Insights from Antarctica on volcanic forcing during the Common Era. Nature Climate Change, 4(8), 693-697, https://doi.org/10.1038/nclimate2293 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 Svensson, Anders M; Dahl-Jensen, Dorthe; Steffensen, Jørgen Peder; Blunier, Thomas; Rasmussen, Sune Olander; Vinther, Bo Møllesøe; Vallelonga, Paul T; Capron, Emilie; Gkinis, Vasileios; Cook, Eliza; Kjær, Helle Astrid; Muscheler, Raimund; Kipfstuhl, Sepp; Wilhelms, Frank; Stocker, Thomas F; Fischer, Hubertus; Adolphi, Florian; Erhardt, Tobias; Sigl, Michael; Landais, Amaelle; Parrenin, Frédéric; Buizert, Christo; McConnell, Joseph R; Severi, Mirko; Mulvaney, Robert; Bigler, Matthias (2020): Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period. Climate of the Past, 16(4), 1565-1580, https://doi.org/10.5194/cp-16-1565-2020 Toohey, Matthew; Sigl, Michael (2017): Volcanic stratospheric sulfur injections and aerosol optical depth from 500 BCE to 1900 CE. Earth System Science Data, 9(2), 809-831, https://doi.org/10.5194/essd-9-809-2017 Funding: Horizon 2020 (H2020) (URI: https://ec.europa.eu/programmes/horizon2020/), grant/award no. 820047: THERA (URI: https://cordis.europa.eu/projects/820047) Coverage: MEDIAN LATITUDE: -1.603125 * MEDIAN LONGITUDE: -48.290400 * SOUTH-BOUND LATITUDE: -79.480000 * WEST-BOUND LONGITUDE: -112.110000 * NORTH-BOUND LATITUDE: 75.100000 * EAST-BOUND LONGITUDE: 0.068400 DATE/TIME START: 1990-01-01T00:39:00 * DATE/TIME END: 2006-01-17T00:00:00 MINIMUM ELEVATION: 2891.7 m * MAXIMUM ELEVATION: 3208.0 m Event(s): EDML (EPICA Dronning Maud Land, DML28C01_00) * LATITUDE: -75.002500 * LONGITUDE: 0.068400 * DATE/TIME START: 2001-01-10T00:00:00 * DATE/TIME END: 2006-01-17T00:00:00 * ELEVATION: 2891.7 m * Recovery: 2774.15 m * CAMPAIGN: EPICA-Campaigns * BASIS: Kohnen Station (URI: https://doi.org/10.17815/jlsrf-2-152) * METHOD/DEVICE: EPICA drill (EDRILL) * COMMENT: Elevation is given with reference to WGS84 GISP2 * LATITUDE: 72.970000 * LONGITUDE: -38.800000 * DATE/TIME: 1990-01-01T00:39:00 * ELEVATION: 3208.0 m * Recovery: 3053 m * CAMPAIGN: GISP * BASIS: Sampling/drilling ice * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: GISP2 is a combination of the shallow B and the deeper D core; about 200 ka NGRIP * LATITUDE: 75.100000 * LONGITUDE: -42.320000 * DATE/TIME: 1996-07-01T00:00:00 * ELEVATION: 2925.0 m * CAMPAIGN: NGRIP * BASIS: Sampling/drilling ice * METHOD/DEVICE: Ice drill (ICEDRILL) WD2014 (WDC-06A, WAIS Divide) (URI: http://www.waisdivide.unh.edu) * LATITUDE: -79.480000 * LONGITUDE: -112.110000 * LOCATION: Antarctica, west * METHOD/DEVICE: Ice drill (ICEDRILL) Parameter(s): AGE [ka BP] (Age) * GEOCODE * PI: Sigl, Michael (https://orcid.org/0000-0002-9028-9703, michael.sigl@climate.unibe.ch) * COMMENT: GICC05 Volcanic sulfate deposition [kg/km**2/a] (Volc SO4 depos) * PI: Sigl, Michael (https://orcid.org/0000-0002-9028-9703, michael.sigl@climate.unibe.ch) * COMMENT: Greenland AGE [ka BP] (Age) * GEOCODE * PI: Sigl, Michael (https://orcid.org/0000-0002-9028-9703, michael.sigl@climate.unibe.ch) * COMMENT: WD2014 Volcanic sulfate deposition [kg/km**2/a] (Volc SO4 depos) * PI: Sigl, Michael (https://orcid.org/0000-0002-9028-9703, michael.sigl@climate.unibe.ch) * COMMENT: Antarctica Description (Description) * PI: Sigl, Michael (https://orcid.org/0000-0002-9028-9703, michael.sigl@climate.unibe.ch) * COMMENT: Volcanic Sulfate Distribution Volcanic stratospheric sulphur injection [Tg] (VSSI) * PI: Sigl, Michael (https://orcid.org/0000-0002-9028-9703, michael.sigl@climate.unibe.ch) Volcanic stratospheric sulphur injection, standard deviation [±] (VSSI std dev) * PI: Sigl, Michael (https://orcid.org/0000-0002-9028-9703, michael.sigl@climate.unibe.ch) License: Creative Commons Attribution 4.0 International (CC-BY-4.0) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) Size: 150 data points */ Age [ka BP] (GICC05) Volc SO4 depos [kg/km**2/a] (Greenland) Age [ka BP] (WD2014) Volc SO4 depos [kg/km**2/a] (Antarctica) Description (Volcanic Sulfate Distribution) VSSI [Tg] VSSI std dev [±] 12.828 23.5 12.809 0.0 unipolar Northern Hemisphere 4.5 1.6 12.832 14.8 12.815 6.1 bipolar 6.9 1.9 12.842 1.9 12.823 1.5 bipolar 1.1 0.3 12.871 279.2 12.850 62.6 bipolar 113.9 34.4 12.875 7.5 12.854 1.8 bipolar 3.1 0.9 12.914 25.9 12.885 13.8 bipolar 13.2 3.3 12.936 19.6 12.906 2.5 bipolar 7.4 2.4 12.946 45.0 12.918 34.4 bipolar 26.5 6.1 12.957 8.7 12.928 2.3 bipolar 3.7 1.1 12.967 5.4 12.937 0.0 unipolar Northern Hemisphere 1.0 0.4 12.980 226.8 12.949 44.9 bipolar 90.6 27.9 12.985 5.7 12.954 0.0 unipolar Northern Hemisphere 1.1 0.4 12.994 9.3 12.965 2.9 bipolar 4.1 1.2 13.013 4.0 12.985 4.2 bipolar 2.7 0.6 13.023 3.7 12.995 1.9 bipolar 1.9 0.5 13.029 3.8 13.000 2.2 bipolar 2.0 0.5 13.043 13.0 13.013 0.0 unipolar Northern Hemisphere 2.5 0.9 13.066 23.7 13.039 1.3 bipolar 8.3 2.9 13.068 7.8 13.040 0.0 unipolar Northern Hemisphere 1.5 0.5 13.077 0.0 13.049 10.4 unipolar Southern Hemisphere 2.0 0.4 13.084 9.0 13.057 1.5 bipolar 3.5 1.1 13.101 19.1 13.077 9.1 bipolar 9.4 2.4 13.118 9.8 13.093 2.4 bipolar 4.0 1.2 13.133 5.3 13.107 0.0 unipolar Northern Hemisphere 1.0 0.4 13.139 8.2 13.113 0.0 unipolar Northern Hemisphere 1.6 0.6 13.149 2.8 13.124 1.9 bipolar 1.5 0.4 13.163 36.6 13.137 39.9 bipolar 25.5 5.3 13.172 8.3 13.147 3.5 bipolar 3.9 1.0 13.190 44.5 13.163 1.8 bipolar 15.4 5.4 13.198 9.2 13.173 10.9 bipolar 6.7 1.4