Not too difficult. Here is the same animation in RGB, just using Imagemagick commands.
It looks like the S2A sensors are not compensated correctly at the swath edges, it is not too hard to see the artifactual green striping. That fellow from NASA helping us last summer said to correct red and blue for more/less atmospheric scattering for ice and water scenes, so that should maybe be added to the canned Imagemagick commands (if that is allowed).
I am not seeing any persuasive shades of blue that would distinguish the different states of ice, melt, and water that we are after. Maybe wayne or someone living way up north can lay out some really large brightly colored tarps so we can see what it takes to get them color corrected with bands 234?
The final image shows Worldview Aqua 250m for three consecutive days, on the northern edge of the Beaufort Gyre. The blue band (day 22) is narrower than the green (day 23) or red (day 24) in the large lead, indicating that the lead is widening faster on the latter two days.
seems that every year there are ever more bullets to dodge. One year our luck will run out we'll get that 'poof' moment... wondering if we'll ever see the pack be detached from all the coastlines
That is the way I see it too, playing with a very dangerous slot machine. One day it will stop with the 3 lemons showing: high pressure anomaly, heat anomaly, cyclone anomaly at just the wrong times in the same summer season following a preconditioning. If each were independently probablility 1/2, that is an expectancy of (1/2)
3 or 8 years (for illustrative purposes only, no idea what the odds are, other than they appear to get worse with each passing emission year).
We've seen the ice pulled away from the entire CAA coastline, not that uncommon with an active Gyre. There is no question though that the off-center geometry of the bounding lands and north pole are very influential in constraining ice motion. For example, CAA ice can ground in the extensive shoals north of Greenland in the Kaffekluben area, a barrier to exiting the Fram Strait.