• Arctic ice is disappearing
• sea levels have been rising
• Glaciers are shrinking globally
• Greenland ice loss is accelerating
  • Greenland's interior ice sheet has grown from 1993 to 2002
    • The coastlines are losing ice
• Arctic permafrost is warming
• Historical ice data is ad hoc and haphazard
  • Systematic data for parts of Arctic since late 18th Century