Video of the day – an interesting way to track the declining volume of Arctic summer sea ice:
Since 1979, the volume of Summer Arctic Sea Ice has declined by 75% and accelerating.
The first summer with an ice-free Arctic Ocean for at least a day is expected to happen within a decade. This video by Andy Lee Robinson illustrates the dramatic decline since 1979 until 2nd September 2012 (day 246). Sea Ice Volume is calculated using the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS, Zhang and Rothrock, 2003) developed at APL/PSC.