PETM - What do left and right sides represent? Thanks
Right side are the
original (cropped)
Bremen AMSR2 concentration maps, NIC color style (key attached here).
Left side are per-pixel
minimums for 5 trailing days.
Minimums are bad at detecting rapid ice motion from low to high concentration, melt pond refreeze or new ice formation unless it persists 5+ days, etc. But they are good for one key thing: seeing through the many cloud artifacts in the originals.
The idea is to use the minimums together with the original to help interpret what's happening in actively melting areas. They also seem to generally do a good job at mapping the true, persistent high- and low-concentration features.
PETM, perhaps it'd be best if you'd add exact description to each half in some automated way for future ones?
Good idea. I've gotten lazy. And you're most welcome.
Re: The O/T.
For me, I used to cheer for a big melt, thinking it might catalyze collective action, but I no longer believe it will matter. (There's zero chance our collective economy will change fast or far enough to avert catastrophe.) So now, I just watch for the enjoyment of witnessing and trying to understand a little of how such a mind-bogglinginly massive and complex system will lurch into a dramatically new state.