Supplement of Ice core evidence for a 20th century increase in surface mass balance in coastal Dronning Maud Land, East Antarctica

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1 Supplement of The Cryosphere, 10, , doi: /tc supplement Author(s) CC Attribution 3.0 License. Supplement of Ice core evidence for a 20th century increase in surface mass balance in coastal Dronning Maud Land, East Antarctica Morgane Philippe et al. Correspondence to: Morgane Philippe (mophilip@ulb.ac.be) The copyright of individual parts of the supplement might differ from the CCB 3.0 licence.

2 Supplementary materials 18 ( ) D ( ) Na+ (ppb) RNa+/S MSA (ppb) nsss4 (ppb) N3(ppb) ldest estimate ECM ( ) Fig. S1. Full vertical profile of water stable isotopes with, from left to right: a grey and black band indicating sections of sampling for major ions at 10 cm and 5 cm resolution, respectively; water stable isotopes, taken at 5 5 cm resolution for the entire core; major ions, taken at 5 cm resolution for discrete sections; normalized ECM conductivity (0.05 m running mean, expressed as multiple of standard deviation, σ); annual layer boundaries in the youngest (Green) and the oldest (Blue) estimates (each colour transition indicates a boundary) oungest estimate

3 Fig. S2. Full vertical profile, as in Fig. S1 but split in 17 sections for more visibility. 0 ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S MSA (ppb) 4 nsss 4 (ppb) N 3 (ppb) ECM ( ) ( ) ( ) ( ) ( ) ( ) ( ) Na + /S = MSA (ppb) 4 nsss 4 (ppb) N 3 (ppb)

4 20 18 ( ) 18 ( ) 18 ( ) 18 ( ) 18 ( ) 18 ( ) 18 ( ) /S MSA (ppb) 4 nsss 4 (ppb) N 3 (ppb) ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S MSA (ppb) 4 nsss 4 (ppb) N 3 (ppb)

5 40 ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S 4 MSA (ppb) nsss 4 (ppb) N 3 (ppb) ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S 4 MSA (ppb) nsss 4 (ppb) N 3 (ppb)

6 60 ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S 4 MSA (ppb) nsss 4 (ppb) N 3 (ppb) ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S 4 MSA (ppb) nsss 4 (ppb) N 3 (ppb) 1903

7 75 ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S 4 MSA (ppb) nsss 4 (ppb) N 3 (ppb) ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S 4 MSA (ppb) nsss 4 (ppb) N 3 (ppb)

8 85 ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S 4 MSA (ppb) nsss 4 (ppb) N 3 (ppb) 90 ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S 4 MSA (ppb) nsss 4 (ppb) N 3 (ppb)

9 95 ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S 4 MSA (ppb) nsss 4 (ppb) N 3 (ppb) 100 ( ) ( ) ( ) ( ) ( ) ( ) ( ) Na + /S 4 = MSA (ppb) nsss 4 (ppb) N 3 (ppb)

10 105 ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S 4 MSA (ppb) nsss 4 (ppb) N 3 (ppb) 110 ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S MSA (ppb) 4 nsss 4 (ppb) N 3 (ppb)

11 115 ( ) ( ) ( ) ( ) ( ) ( ) ( ) /S 4 MSA (ppb) nsss 4 (ppb) N 3 (ppb)

12 Table S1. Sites information and SMB values *no significant trend during the 20 th century **short record: only recent periods are compared ***when only a stacked SMB change is given, SMB from individual ice cores are inferred from the stacked record as if it was the same trend for all ice cores. Ref : reference period. Numbers in italic are inferred from the trend given in the referenced paper Site name Latitude Longitude Elevation Reference SMB (10 3 m Recent period SMB (10 3 m Most recent SMB (10 3 m w.e.) % change (m a.s.l.) period w.e.) (kg m 2 a 1 ) w.e.) (kg m 2 a 1 ) period (kg m 2 a 1 ) (50a ref) % change (20a ref) except** Method Study Siple Dome % Ice core Kaspari et al., 2004 ITASE % Ice core Kaspari et al., 2004 ITAE % Ice core Kaspari et al., 2004 ITASE % Ice core Kaspari et al., 2004 RIDS C % Ice core Kaspari et al., 2004 RIDS B % Ice core Kaspari et al., 2004 RIDS A % Ice core Kaspari et al., 2004 ITASE % Ice core Kaspari et al., 2004 ITASE % Ice core Kaspari et al., 2004 ITASE % Ice core Kaspari et al., 2004 ITASE % Ice core Kaspari et al., 2004 ITASE ** % Ice core Kaspari et al., 2004 Gomez s % 53% Ice core Thomas et al., 2008 Dyer Plateau % Ice core Raymond et al., 1996 James Ross Island % Ice core Aristarain et al., 2004 R ±7 * % Ice core Mulvaney et al., 2002 Berkner B % Ice core Ruth et al., 2004 A ** % Ice core Isaksson & Melvold, 2002 E ** % Ice core Isaksson & Melvold, 2002; Isaksson et al., 1996 B ** % Ice core Fernandoy et al., 2010 FB ** % Ice core Fernandoy et al., 2010 BASdepot % Ice core Hofstede et al., 2004 B ± % Schlosser & erter, 2002 CV ± % 13% Ice core Karlof et al., 2005 B ** % Ice core Fernandoy et al., 2010 FB ** % Ice core Fernandoy et al., 2010 FB ± *** 9.57% Ice core erter et al., 2000 B % Ice core erter et al., 2000 H ** % Ice core Isaksson & Melvold, 2002 NUS / ± / ± % Ice core Anschutz et al., 2011 S ** ± % Ice core Schlosser et al., 2014 G ** ± % Ice core Schlosser et al., 2014 FB ± *** 10.17% Ice core erter et al., 2000 G ** ± % Ice core Schlosser et al., 2014 M ** ± % Ice core Schlosser et al., 2014 G ** ± % Ice core Schlosser et al., 2014 K ** % Ice core Isaksson & Melvold, 2002 SPS ± ± % 10% Ice core and poles Mosley & Thompson, 1999 B % Ice core erter et al., 2000 EPICA DML ± % Firn core and radar Fujita et al., 2011 FB ± *** 9.56% Ice core erter et al., 2000 FB ± *** 9.55% Ice core erter et al., 2000 EPICA (Amundsenisen) % Ice core Isaksson et al., 1996 G ** ± % Ice core Schlosser et al., 2014

13 Site name Latitude Longitude Elevation (m a.s.l.) Reference period SMB (10 3 m w.e.) (kg m 2 a 1 ) Recent period SMB (10 3 m w.e.) (kg m 2 a 1 ) Most recent period SMB (10 3 m w.e.) (kg m 2 a 1 ) % change (50a ref) % change (20a ref) except** Method Study FB ± *** 10.94% Ice core erter et al., 2000 C % Ice core Isaksson et al., 1999 D % Ice core Isaksson et al., 1999 DML ±19 * % Ice core erter et al., 1999 E % Ice core Isaksson et al., 1999 DML ±14 * % Ice core erter et al., 1999 FB ± *** 9.88% Ice core erter et al., 2000 F % Ice core Isaksson et al., 1999 S ± % 11% Ice core Kaczmarska et al., 2004 S % Ice core Isaksson et al., 1999 FB ± % Firn core and radar Fujita et al., 2011 FB *** 10.42% Ice core erter et al., 2000 G % Ice core Isaksson et al., 1999 FB ± *** 10.00% Ice core erter et al., 2000 H % Ice core Isaksson et al., 1999 B % Ice core erter et al., 2000, Sommer et al., 2000 FB ± *** 10.34% Ice core erter et al., 2000 DML ±12 * % Ice core erter et al., 1999 DML ±11 * % Ice core erter et al., 1999 DML ±15 * % Ice core erter et al., 1999 I % Ice core Isaksson et al., 1999 NUS /8 52 ± / ± % Ice core Anschutz et al., 2009 Site I ± ± % 0% Ice core Anschutz et al., 2009 DML ±14 * % Ice core erter et al., 1999 NUS / ± / ± % Ice core Anschutz et al., 2011 J ±4 2.27% Ice core Isaksson et al., 1999 FB ± % Firn core and radar Fujita et al., 2011 K % Ice core Isaksson et al., 1999 L % Ice core Isaksson et al., 1999 A ±1 1.14% Firn core and radar Fujita et al., 2011 MC % 15% Ice core Karlof et al., 2005 MD % 26% Ice core Karlof et al., 2005 M ± ± ± % 22% Ice core Karlof et al., 2005 M % Ice core Hofstede et al., 2004 M % Ice core Isaksson et al., 1999 MB % 18% Ice core Karlof et al., 2005 MA ± % 14% Ice core Karlof et al., 2005 NUS /8 35 ± / ± % Ice core Anschutz et al., 2011 NUS / ± / ± % Ice core Anschutz et al., 2011 NUS / ± / ± % Ice core Anschutz et al., 2011 A ± % Firn core and radar Fujita et al., 2011 NUS /8 33 ± /8 28 ± % Ice core Anschutz et al., 2011 MP ± ± ± % 27% Firn core and radar Fujita et al., 2011 NUS /8 22 ± / ± % Ice core Anschutz et al., 2009 IC ± ± ± % 42% Ice core This paper DK ± ±2.3 19% Firn core and radar Fujita et al., 2011 NUS /8 19 ± / ± % Ice core Anschutz et al., 2009 NUS /8 24 ± / ± % Ice core Anschutz et al., 2011

14 Site name Latitude Longitude Elevation (m a.s.l.) Reference period SMB (10 3 m w.e.) (kg m 2 a 1 ) Recent period SMB (10 3 m w.e.) (kg m 2 a 1 ) Most recent period SMB (10 3 m w.e.) (kg m 2 a 1 ) % change (50a ref) % change (20a ref) except** Method Study DF ± ± % 4% Ice core Igarashi et al., 2011 M % Ice core Takahashi et al., 2009 H % Ice core and poles Nishio et al., 2002 NUS / / % Ice core Anschutz et al., 2009 G % Ice core Moore et al., 1991 NUS /8 32 ± /8 30 ± % Ice core Anschutz et al., 2009 NUS / ± / ± % Ice core Anschutz et al., 2011 DT ** ± % Stake arrays Ding et al., 2011 DT ** ± % Stake arrays Ding et al., 2011 DT ± % 32% Ice core Ren et al., 2010; Ding et al., DT % Ice core Zhang et al., 2006 Dome A ** ± % Stake arrays Ding et al., 2011 DomeA % Ice core Jiang et al., 2012 LGB % Ice core Xiao et al., 2004 DT ** ± % Stake arrays Ding et al., 2011 VSTK ± ± % 1% Snow pits and poles Ekaykin et al., 2004 DSS % Ice core Roberts et al., 2015 LAW DME % Ice core Morgan et al., 1991; van mmen & Morgan, 2010 DomeC % 54% Ice core and poles Frezzotti et al., 2005 D6 A ± ± % 8% Ice core and poles Frezzotti et al., 2005 D ± % 1% Ice core and poles Magand et al., 2004;Frezzotti et al., 2013 D2 A ± ± % 50% Ice core and poles Frezzotti et al., 2005 GV ± % 16% Ice core and poles Magand et al., 2004;Frezzotti et al., 2013 GV ± % 18% Ice core and poles Magand et al., 2004;Frezzotti et al., 2013 MdPtA ± ± % 31% Ice core and poles Frezzotti et al., 2005 GV ± % 10% Ice core and poles Magand et al., 2004;Frezzotti et al., 2013 M2 A ± ± % 50% Ice core and poles Frezzotti et al., 2005 GV ± % 19% Ice core and poles Magand et al., 2004;Frezzotti et al., DPT A ± ± % 0% Ice core and poles Frezzotti et al., 2005 GPS2A ± ± % 8% Ice core and poles Frezzotti et al., 2005 GV ± % 5% Ice core and poles Magand et al., 2004;Frezzotti et al., 2007 GV ± % 6% Ice core and poles Magand et al., 2004;Frezzotti et al., 2007 Talos Dome % 19% Ice core and poles Magand et al., 2004;Frezzotti et al., 2007; 2013 Hercules Neve % Ice core Stenni et al., 1999

15 References for Table S1 Anschütz, H., Müller K., Isaksson, E., McConnell, J. R., Fischer, H., Miller, H., Albert, M., and Winther, J.G.: Revisiting sites of the South Pole Queen Maud Land Traverses in East Antarctica: accumulation data from shallow firn cores, J. Geophys. Res., 114, D24106, doi: /2009JD012204, Ekaykin, A. A., Lipenkov, V.., Kuzmina, I., Petit, J. R., MassonDelmotte, V., and Johnsen, S. J.: The changes in isotope composition and accumulation of snow at Vostok station, East Antarctica, over the past 200 years, Ann. Glaciol., 39, , doi: / , Frezzotti, M., Urbini, S., Proposito, M., Scarchilli, C., and Gandolfi, S.: Spatial and temporal variability of surface mass balance near Talos Dome, East Antarctica, J. Geophys. Res., 112, F02032, doi: /2006JF000638, Igarashi, M., Nakai,., Motizuki,., Takahashi, K., Motoyama, H., and Makishima, K.: Dating of the Dome Fuji shallow ice core based on a record of volcanic eruptions from AD 1260 to AD 2001, Polar Sci., 5, , doi: /j.polar , Magand,., Frezzotti, M., Pourchet, M., Stenni, B., Genoni, L., and Fily, M.: Climate variability along latitudinal and longitudinal transects in east Antarctica, Ann. Glaciol., 39, , doi: / , Morgan, V. I., Goodwin, I. D., Etheridge, D. M., and Wookey, C. W.: Evidence from Antarctic ice cores for recent increases in snow accumulation, Nature, 354(6348), 58 60, doi: /354058a0, Mulvaney, R., erter, H., Peel, D. A., Graf, W., Arrowsmith, C., Pasteur, E. C., Knight, B., Littot, G. C., and Miners, W. D: 1000year ice core records from Berkner Island, Antarctic, Ann. Glaciol., 35, 45 51, doi: / , Raymond, C.,Weertman, B., Thompson, L., MosleyThompson, E., Peel, D., and Mulvaney, R.: Geometry, motion and mass balance of Dyer Plateau, Antarctica, J. Glaciol., 42, , doi: /1996JoG , Roberts, J., Plummer, C., Vance, T., van mmen, T., Moy, A., Poynter, S., Treverrow, A., Curran, M., and George, S.: A 2000year annual record of snow accumulation rates for Law Dome, East Antarctica, Clim. Past, 11, , doi: /cp , Ruth, U., Wagenbach, D., Mulvaney, R., erter, H., Graf, W., Pulz, H., and Littot, G.: Comprehensive 1000 year climate history from an intermediate depth ice core from the south dome of Berkner Island, Antarctica: methods, dating and first results, Ann. Glaciol., 39, , doi: / , Schlosser, E., Anschütz, H., Divine, D., Martma, T., Sinisalo, A., Altnau, S., and Isaksson, E.: Recent climate tendencies on an East Antarctic ice shelf inferred from a shallow firn core network, J. Geophys. Res., 119, , doi: /2013jd020818, Sommer, S., Appenzeller, C., Röthlisberger, R., Hutterli, M. A., Stauffer, B.,Wagenbach, D., erter, H.,Wilhelms, F., Miller, H., and Mulvaney, R.: Glaciochemical study spanning the past 2 kyr on three ice cores from Dronning Maud Land, Antarctica, 1. Annually resolved accumulation rates, J. Geophys. Res., 105, , doi: /2000jd900449, Stenni, B., Caprioli, R., Cimmino, L., Cremisini, C., Flora,., Gragnani, R., Longinelli, A., Maggi, V., and Torcini, S.: 200 years of isotope and chemical records in a firn core from Hercules Neve, northern Victoria Land, Antarctica, Ann. Glaciol., 29, , doi: / , Takahashi, H., okoyama, T., Igarashi, M., Motoyama, H., and Suzuki, K.: Resolution of environmental variation by detail analysis of M85 shallow ice core in Antarctica, Bull. Glaciol. Res., 27, 16 23, van mmen, T. D., and Morgan, V.: Snowfall increase in coastal East Antarctica linked with southwest Western Australian drought, Nat. Geosci., 3, , doi: /ngeo761, Xiao, C., Mayewski, P. A., Qin, D., Li, Z., Zhang, M., and an,.: Sea level pressure variability over the southern Indian cean inferred from a glaciochemical record in Princess Elizabeth Land, east Antarctica, J. Geophys. Res., 109, D16101, doi: /2003JD004065, 2004.

Supplement of Regional Antarctic snow accumulation over the past 1000 years

Supplement of Regional Antarctic snow accumulation over the past 1000 years Supplement of Clim. Past, 13, 1491 1513, 2017 https://doi.org/10.5194/cp-13-1491-2017-supplement Author(s) 2017. This work is distributed under the Creative Commons Attribution 3.0 License. Supplement