... http://maps.grida.no/go/graphic/arctic-sea-ice-minimum-extent-in-september- 198 2 -and- 2008 (Accessed April 16 20 09) Wednesday, April 13, 2011 Arctic Sea Ice (minimum annual extent, September) http://maps.grida.no/go/graphic/arctic-sea-ice-minimum-extent-in-september- 198 2 -and- 2008 ... http://maps.grida.no/go/graphic/arctic-sea-ice-minimum-extent-in-september- 198 2 -and- 2008 (Accessed April 16 20 09) Wednesday, April 13, 2011 Great Aletsch Glacier (Switzerland) 1858 Wednesday, April 13, ... evaporation makes atmosphere gets “lighter” (more 16O) and oceans “heavier” (more 18O) Wednesday, April 13, 2011 -4 0 ** * * * -3 0 -1 0 -2 0 -3 0 -7 -2 Rain – enriched in 18O Wednesday, April 13, 2011...