Table Reference	Region	Site Name 	Site Location	Site Number (on Figure 1)	Proxy	Primary Reference
N1	Norway	Malangen Fjord		69°29’N, 18°22’E	1	δ18O of benthic foraminifera 	Hald et al., 2011
N2	Norway	Vøring Plateau		66°97’N, 7°64’E		2	δ18O of planktonic foraminifera 	Anderson et al., 2003
N3	Norway	Vøring Plateau		66°97’N, 7°64’E		2	Planktonic foraminifera 	Anderson et al., 2003
N4	Norway	Ranafjord		66°09.2’N, 12°39.4’N	3	δ18O of benthic foraminifera 	Kristensen et al., 2003
N5	Norway	Norwegian Margin	63°45’N, 05°15’E	4	δ18O of planktonic foraminifera 	Sejrup et al., 2010
N6	Norway	Norwegian Channel	60°52’N, 03°44’N	5	δ18O of benthic foraminifera 	Eiríksson et al., 2006
I1	Iceland	North Iceland Shelf	66° 31.59' N, 18° 11.74' W	7	Arctica islandica shell growth increments 	Wanamaker et al., 2008, 2012; Butler et al., 2013
I2	Iceland	North Iceland Shelf, core site MD99-2275	66°33.10’N; 17°41.99’W	8	Diatoms 	Ran et al., 2011
I3	Iceland	North Iceland Shelf, core site MD99-2276	66°33.10’N; 17°41.99’W	8	Alkenones 	Sicre et al., 2008; 2011
S1	Scotland	Loch Sunart 	56°40’N, 5°52’W	9	δ18O of benthic foraminifera 	Cage and Austin, 2010 
N_comp	Norway	Norwegian Coast			Composite record derived from N1-N6, normalised for the period 1000 - 1974  AD	Cunningham et al. 2013
I_Comp	Iceland	North Iceland Shelf			Composite record derived from I1-I3, normalised for the period 1000 - 1974  AD	Cunningham et al. 2014
NENA_Comp	NE North Atlantic Ocean				Composite record derived from the 10 proxy records shown above, normalised for the period 1000 - 1974  AD	Cunningham et al. 2015