In reply to wintertree:
There is no such thing as an Arctic "Ice Cap". You're talking about sea ice extent. For something to be an ice cap, it needs to a) be on the land and b) not be topographically constrained. Furthermore, if its >50,000 km^2 it's an ice sheet (see Greenland), or <50,000 km^2 then it's an ice cap (see Vatnajökull).
/pedantry