From : http://nsidc.org/images/arcticseaicenews/20101004_Figure6.png

Thanks to the surprising late season selective loss of multi-year ice (MYI) in the Arctic, we are likely to see the area of MYI more than triple over the next few weeks. All of the surviving areas of 1-2 year old ice (turquoise) will soon become multi-year ice (green.)

Perhaps 2010 will have a record gain in both extent and multi-year ice area this autumn.