Supplementary Table DR1. Summer SST data from core MD99-2275 on the 
North Icelandic Shelf
 Core depth (cm), Age (cal yr B.P.), Summer SSTs (°C)
0.5 75 6.5
2.5 77 6.7
5.5 81 7.1
7.5 84 7.4
10.5 88 6.3
12.5 90 6.7
15.5 94 6.3
17.5 97 7.4
20.5 101 6.4
22.5 103 6.7
25.5 107 7.1
27.5 110 6.9
30.5 114 7.2
32.5 117 7.1
35.5 120 7.1
37.5 123 6.8
40.5 127 5.8
42.5 130 6.7
45.5 133 6.5
47.5 136 7.1
50.5 140 6.5
52.5 143 7.0
55.5 147 7.0
57.5 149 7.3
60.5 153 6.8
62.5 157 7.0
65.5 163 6.8
67.5 167 7.2
70.5 173 6.3
72.5 177 6.9
75.5 183 7.3
77.5 187 6.8
80.5 193 7.2
82.5 196 7.1
85.5 202 7.2
87.5 206 7.1
90.5 212 6.9
92.5 216 7.2
95.5 222 8.0
97.5 226 7.2
100.5 232 7.3
102.5 238 7.2
105.5 247 6.6
107.5 253 7.3
110.5 262 7.3
112.5 268 7.0
115.5 277 7.1
117.5 283 6.5
120.5 292 6.9
122.5 298 6.8
125.5 307 6.6
127.5 314 6.9
130.5 323 6.6
132.5 329 6.8
135.5 338 6.9
137.5 344 7.1
140.5 353 7.0
142.5 359 7.4
145.5 368 7.2
147.5 374 7.3
150.5 383 6.9
152.5 389 6.5
155.5 399 6.9
157.5 405 7.5
160.5 414 7.1
162.5 420 6.7
165.5 429 6.6
167.5 435 6.8
170.5 444 6.8
172.5 450 6.8
175.5 459 6.2
177.5 465 7.3
180.5 474 7.0
182.5 478 6.9
185.5 486 6.4
187.5 490 6.7
190.5 498 7.3
192.5 502 7.5
195.5 510 7.0
197.5 515 6.6
200.5 522 7.0
202.5 527 6.8
205.5 534 6.6
207.5 539 6.7
210.5 548 6.9
212.5 555 6.7
215.5 566 7.0
217.5 573 7.5
220.5 584 6.1
222.5 591 7.3
225.5 601 6.8
227.5 609 7.2
230.5 620 6.3
232.5 627 7.0
235.5 637 7.1
237.5 645 8.0
240.5 658 7.3
242.5 669 7.3
245.5 685 7.2
247.5 696 7.3
250.5 712 7.7
252.5 722 7.6
255.5 739 7.7
257.5 749 7.8
260.5 765 7.6
262.5 776 8.2
265.5 792 7.4
267.5 803 7.5
270.5 819 7.2
272.5 830 8.0
275.5 846 6.9
277.5 853 7.6
280.5 863 7.7
282.5 870 7.5
285.5 881 6.9
287.5 888 7.8
290.5 898 7.3
292.5 905 8.0
295.5 916 7.6
297.5 923 8.1
300.5 935 7.6
302.5 949 7.2
305.5 970 7.3
307.5 985 7.2
310.5 1006 8.1
315.5 1041 7.4
319.5 1069 6.7
322.5 1088 7.6
327.5 1113 8.1
332.5 1139 7.2
337.5 1164 7.2
342.5 1190 7.6
347.5 1215 7.7
352.5 1241 7.4
357.5 1266 7.3
362.5 1292 7.3
367.5 1318 7.8
372.5 1343 8.2
377.5 1369 7.7
382.5 1394 7.9
387.5 1420 7.6
392.5 1446 7.9
397.5 1471 8.3
402.5 1497 7.9
407.5 1522 7.3
412.5 1548 8.0
417.5 1573 8.2
422.5 1599 8.0
427.5 1624 8.0
432.5 1650 7.4
437.5 1676 7.2
442.5 1701 7.5
447.5 1727 7.9
452.5 1752 8.1
457.5 1778 8.0
462.5 1804 7.6
467.5 1830 7.6
472.5 1856 7.5
477.5 1883 8.4
482.5 1909 8.0
487.5 1935 7.7
492.5 1961 7.6
497.5 1988 7.3
502.5 2014 7.7
512.5 2066 7.8
522.5 2118 8.2
532.5 2171 8.7
542.5 2223 9.3
552.5 2276 7.6
562.5 2328 8.2
572.5 2380 7.6
582.5 2433 8.0
592.5 2486 7.6
602.5 2538 8.5
612.5 2590 8.2
622.5 2643 7.4
632.5 2695 7.3
642.5 2748 7.6
652.5 2800 7.8
662.5 2852 8.5
672.5 2905 7.9
682.5 2958 7.9
692.5 3008 8.8
702.5 3056 8.3
712.5 3103 8.3
722.5 3152 8.7
732.5 3200 7.6
742.5 3248 8.1
752.5 3296 7.7
762.5 3344 7.9
772.5 3392 7.6
782.5 3440 8.5
792.5 3488 8.3
802.5 3536 8.4
812.5 3584 8.0
822.5 3632 8.5
832.5 3680 7.6
842.5 3729 8.2
852.5 3776 7.9
862.5 3825 8.7
872.5 3873 8.1
882.5 3921 7.8
892.5 3969 7.9
903.5 4022 7.8
912.5 4065 8.3
923.5 4118 7.6
932.5 4161 7.9
943.5 4214 8.4
952.5 4260 7.6
962.5 4312 8.8
972.5 4363 8.3
982.5 4414 8.3
992.5 4465 7.8
1002.5 4516 8.8
1012.5 4567 8.4
1022.5 4618 8.2
1032.5 4670 8.3
1042.5 4721 8.8
1052.5 4772 8.0
1062.5 4823 8.1
1072.5 4874 7.7
1082.5 4925 8.5
1092.5 4977 7.5
1102.5 5028 7.7
1112.5 5079 8.2
1122.5 5130 7.4
1132.5 5181 8.1
1142.5 5233 8.8
1152.5 5284 8.5
1162.5 5335 7.7
1172.5 5386 8.5
1182.5 5437 8.1
1192.5 5485 8.1
1202.5 5528 8.7
1212.5 5572 8.1
1222.5 5616 8.5
1232.5 5660 7.9
1242.5 5703 8.2
1252.5 5747 8.2
1262.5 5791 8.9
1272.5 5835 8.9
1282.5 5878 9.1
1292.5 5922 9.0
1302.5 5966 8.8
1312.5 6010 8.1
1322.5 6053 8.4
1332.5 6094 8.1
1342.5 6134 8.3
1352.5 6175 8.1
1362.5 6215 8.5
1372.5 6256 8.5
1382.5 6296 8.7
1392.5 6336 8.7
1402.5 6377 8.4
1412.5 6417 8.8
1422.5 6457 8.8
1432.5 6498 8.4
1442.5 6538 8.5
1452.5 6579 8.2
1462.5 6619 8.6
1472.5 6662 9.0
1482.5 6705 8.7
1492.5 6748 9.5
1502.5 6791 8.6
1512.5 6834 8.8
1522.5 6877 8.7
1532.5 6920 8.2
1542.5 6964 9.1
1552.5 7008 8.9
1562.5 7050 9.2
1572.5 7094 8.9
1582.5 7138 9.4
1592.5 7181 8.9
1602.5 7225 8.5
1612.5 7269 9.2
1622.5 7312 9.9
1632.5 7356 9.3
1642.5 7400 9.0
1652.5 7443 9.5
1662.5 7487 9.7
1672.5 7530 9.9
1682.5 7574 9.9
1692.5 7618 9.4
1702.5 7662 9.1
1712.5 7705 9.5
1722.5 7749 9.8
1732.5 7792 9.5
1742.5 7836 9.7
1752.5 7880 9.0
1762.5 7923 9.6
1772.5 7967 9.2
1782.5 8011 9.1
1792.5 8054 9.2
1802.5 8098 9.8
1812.5 8143 8.2
1822.5 8188 8.0
1832.5 8233 8.3
1842.5 8278 8.8
1852.5 8324 8.6
1862.5 8369 8.2
1872.5 8414 8.6
1882.5 8459 9.6
1892.5 8504 8.2
1902.5 8549 8.6
1912.5 8594 8.7
1922.5 8639 8.1
1932.5 8685 8.9
1942.5 8730 8.6
1952.5 8775 8.7
1962.5 8820 8.3
1972.5 8865 8.4
1982.5 8910 8.5
1992.5 8956 9.0
2002.5 9001 8.6
2012.5 9046 7.9
2022.5 9091 8.7
2032.5 9136 9.2
2042.5 9181 8.6
2052.5 9226 8.3
2062.5 9271 8.9