Arctic GEOTRACES identified : Freshwater input Shelf-Ocean exchange Arctic rivers contribute ~10% of global river runoff Arctic shelves represent ~25% of global shelf area Arctic ecosystems contain ~33% of the world’s soil carbon The Arctic is sensitive to and a key area for understanding global change Fram Strait Barents Sea Despite IPY little is known about TEI in the Arctic

Arctic A GEOTRACES section across the Arctic Oden works in Antarctica during winter (2008-2012). possible return across the Pacific and Arctic Ocean A GEOTRACES section across the Arctic using icebreaker Oden in 2011/2012 Fram Strait Barents Sea