The Polar Science Center has updated the PIOMAS ice volume numbers, and, whoa:
Usual disclaimers about short-term trends. The number could shoot back up. That said, there are a few interesting things about the latest numbers. Clearly this is the fastest decline we've ever seen. The anomaly is not only at its absolute lowest point, but is also the furthest from the trend line (-3,400km3/decade) which increasingly looks as though it needs to be replaced with an exponential function.