Will look at the whole arctic ocean another time
Thx, no rush! Here where this is going: The buoy tracks are colored by the matching time intervals as specified above (driven by critical features of itp128). Selection is needed but wasn't done against buoys with confusing or redundant tracks.
We are looking in part for trajectory parallelism that implies virtual buoys which then convert sparse point data into lines and area swept out, thus indicating regional rigidity of the ice pack.
Perfectly parallel trajectories (according to high precision high frequency distance GPS position differencing) means no leads or rafting because those change inter-buoy distances.
This could perhaps synergize with AMSR2 lead detection, give the widening history at 48x the temporal resolution of the daily satellite, and determine whether the lead froze over or just closed again. (This requires two buoys on opposite sides.)
The four frames are shown coloring the original, by themselves, 08 Dec-01 Jan parallel types, and overlaid on the 19 May 2023 Ascat.
The second animation shows the resolution limits of daily Ascat (which is one of the better satellites). It is no match for buoy GPS location and 30 minute sampling.
The third animation is at the better original scale (where colors are not pixelated). This will not animate without two clicks and few people will realize that. Ascat needs to be rotated 45º cw and enlarged 5.10x to overlay. It could have been done over an Ascat animation of the dates involved but wasn't.