Overpeck et al., 1997, Arctic Environmental Change of the Last Four Centuries, Science, in press Table 1. Paleoclimate Site Information MAP SITE NAME PROXY TYPE Signal* Reference LAT LONG ELEVATION (m) NO. 1 Svalbard Ice Core percent summer melt Tarussov, 1992 79 0' 15 0'E 2 Tornetrask tree-ring widths Briffa et al., 1992; Briffa et al., 1996 68 15' 20 15'E 3 Polar Urals tree-ring widths Briffa et al., 1995;1996 66 30' 65 50' E 4 Lena River tree-ring widths MacDonald et al., this paper 70 41' 125 52' E 5 Kolyma (J. London Lake) tree-ring widths L. Brubaker et al., unpubl. 62 0' 150 0'E 6 Site 412 tree-ring widths Jacoby and D'Arrigo, 1989; D'Arrigo and Jacoby, 1992;1993 67 56' 162 18'W 7 Arrigetch Peaks tree-ring widths Jacoby and D'Arrigo, 1989; D'Arrigo and Jacoby, 1992;1993 67 26' 154 03' W 8 Dune Lake 13C isotopes B. Finney, this paper 64 50 146 0' W 9 Sheenjek tree-ring widths Jacoby and D'Arrigo, 1989; D'Arrigo and Jacoby, 1992;1993 68 38' 143 43' W 10 TTHH tree-ring widths Jacoby and D'Arrigo, 1989; D'Arrigo and Jacoby, 1992;1993 65 00 138 20'W 11 Eagle Fecal tree-ring widths Jacoby and D'Arrigo, 1989; D'Arrigo and Jacoby, 1992;1993 69 20' 126 50'W 12 Franklin Mtns tree-ring widths Jacoby and D'Arrigo, 1989; D'Arrigo and Jacoby, 1992;1993 65 21' 126 41'W 13 MacKenzie Mtns tree-ring widths Jacoby and D'Arrigo, 1989; D'Arrigo and Jacoby, 1992;1993 65 00' 127 50'W 14 Coppermine tree-ring widths Jacoby and D'Arrigo, 1989; D'Arrigo and Jacoby, 1992;1993 67 14' 115 55'W 15 Hornby Cabin tree-ring widths Jacoby and D'Arrigo, 1989; D'Arrigo and Jacoby, 1992;1993 64 02' 103 52'W 16 Churchill tree-ring widths Jacoby and D'Arrigo, 1989; D'Arrigo and Jacoby, 1992;1993 58 43' 94 04' W 17 Lake DV09 varve thicknesses Gajewski et al., 1997 75 34' 89 19' W 18 Devon Island Ice Core percent summer melt Koerner, 1977; Koerner and Fisher, 1990 75 30' 85 0'W 19 Lake C2 varve thicknesses Lamoureux and Bradley, 1996 82 47' 77 54' W 20 Lake C3 varve thicknesses Lasca, 1997 82 48' 77 55' W 21 Lake Tuborg varve thicknesses S. Smith, this paper 77 0' 82 30'W 22 Castle Peninsula tree-ring widths Jacoby and D'Arrigo, 1989; D'Arrigo and Jacoby, 1992;1993 56 10' 76 33' W 23 Kuujuaq tree-ring widths Jacoby and D'Arrigo, 1989; unpubl. 58 22' 68 23' W 24 Upper Soper Lake dark lamination thicknesses J Hughen et al., 1997 62 55' 69 53' W 1 25 Okak tree-ring widths Jacoby and D'Arrigo, unpubl. 57 30' 62 26'W 26 Salt Water Pond tree-ring widths Jacoby and D'Arrigo, unpubl. 56 30' 61 57'W 27 Donard Lake varve thicknesses J. Moore et al., this paper 66 40' 61 21'W 28 South Greenland Ice Corepercent summer melt Kameda et al., 1992; Bradley and Jones, 1993 67 52' 46 16'W 29 Nansen Fjord fossil foraminifera Jennings and Weiner, 1996 68 15' 29 55'W