The above video graphically depicts sea ice volume losses as measured by PIOMAS since 1979.
Overall losses during the period of 1979 to this fall have been 78% of sea ice volume. It is these massive losses in volume that have lead some scientists and researchers to predict the potential for ice-free seas during late summer within the next decade.
Joe Romm and many others are starting to call these massive losses a ‘Death Spiral.’ When looking at trends for sea ice loss, death spiral does appear to be what is, indeed, happening.
Another video, shown below, gives a graphic representation of sea ice extent loss since 1979. Take a look at the graph on the right hand side of the visual measure. It provides a good visualization of where sea ice extent values, now 54% lower than 1979 are heading.