that sudden change in direction opened up all the leads
Or whiplash. When the eye of a hurricane/cyclone passes overhead as it kinda did here, the wind reverses direction. Extensional leads rather than compressional ridges because ice on the edges moves centrifugally outwards. But where exactly and what good would advance knowledge do for the Polarstern?
In terms of replacing the white base under your buoy animations with appropriately dated S1AB or nullschool GFS winds (to get at the correlation pictorially), the S1AB go about 20 hours between 3 close coverages and the GFS 3 hours whereas the buoys commonly report hourly. So there is somewhat of a mismatch in time resolution to buoy GPS.
The Simb3 buoys report every four hours. However most buoys can be programmed to call in at whatever interval, from ten minutes on up. Some may be able to take downlink re-programming calls.
Windy gives update intervals and the time of update release (as of 2016 unfortunately) for all the common weather satellites and has stopped providing Arctic ECMWF.
https://community.windy.com/topic/3340/when-and-how-often-are-the-weather-data-updatedOn the four Simb3, call them abcd, retrieving their record of 924 dial-ups back to Oct 6th deployment revealed quite a mix of buoy position reporting combinations that complicate matters for making two delaunay triangles or just one (or just an inter-buoy line) consistently.
The attached csv database is tricked out with extra sort columns to enable extraction of any desired sub-collection. The Simb3 are key to local ice thickness development, in combination with whole-ocean 25x25 km cryo2smos.
636 abcd (all buoys reporting)
086 bcd (buoy a not reporting)
041 cd (buoys ab not reporting)
012 abd (buoy c not reporting)
012 acd (buoy b not reporting)
011 c (buoys abd not reporting)
006 abc (buoy d not reporting)
002 ac (buoys bd not reporting)
002 bd (buoys ac not reporting)Uniq and macID have built a
better mousetrap. That is, one-hour ice movement is much more refined than two-day OsiSaf as a better match to the intrinsic time scale of winter ice movement.
That is, the PS lat lon changed, in 1026 available hour increments at awiMet as poorly measured by one dp data are distributed as below. Note 0.1 in lon is a lot less distance travelled than 0.1 in lat this far north; the distribution estimate could be refined by using 4 hr windows. The Polerstern is currently moving very slowly south and east.
667 no change lat, no change lon
151 no change lat, westward 0.1 lon
117 no change lat, eastward 0.1 lon
010 0.1 south in lat, no change in lon
004 0.1 north in lat, no change in lon
002 no change lat, 0.3 westward in lon
006 no change lat, 0.2 westward in lon
008 no change lat, 0.2 eastward in lon
002 0.1 north in lat, 0.1 west in lon
003 0.1 north in lat, 0.1 east in lon
010 miscellaneous
While ice motion so described is limited to inside the buoy envelope, it could give advance notice to the Polarstern of leads and ridges outside their immediate location in advance of the next S1AB. The buoy pattern is in effect an imaging device, resembling the discretized ommatidia of a small invertebrate eye.
OsiSaf uses pattern recognition but those point features (virtual buoys) change from day to day and can be quite sparse. OsiSaf is not currently pointed at S1AB but could be, giving ultra-refined ice motion between timestamps in conjunction with the buoy product.
Clearly uniq could dump the gridded underlying data into netCDF time series format to distribute the underlying numerology though trailing tails (but not colors) would be lost.
