And the volume anomaly:
Another steep drop. As per the PSC/APL website:
Monthly averaged ice volume for June 2011 was 15,700 km3. This value is 37% lower than the mean over this period, 47% lower than the maximum in 1979, and 2.5 standard deviations below the trend. Shaded areas represent one and two standard deviations of the residuals of the anomaly from the trend.
Wipneus made a graph that shows all the trends in the period 2002-2011:
This year's volume is just below last year's.
And here's the monthly average with exponential trend:
Dominik Lenné made a graph showing the difference between the graph based on the old data and the new graph: