[soperj]

that's nonsense. It hasn't happened again in a decade despite the last 5 years being some of the warmest on record, and there was a cyclone that ripped through arctic dispersing sea ice in early August that year. It's clearly an anomaly.

[Retric]

Being 2 standard deviations from the trend line is hardly an anomaly, just expected variance over a sample that size.

0.05 * 40 = 2.