It's oh so cloudy up there in the Arctic due to all those nasty cyclones that it's virtually impossible to make intriguing animations of Passages, glaciers or ice floes the size of European islands. I decided therefore to have another look at sea ice concentration maps and how they have been evolving over the past couple of weeks.
Allow me to kick off with the sea ice concentration map of the University of Bremen because I was quite surprised by what I saw today. A huge part of the ice pack has suddenly turned to yellow, green and even some blue in the area of the Beaufort, Chukchi and East Siberian Seas. Mind you, I expressed my doubt following the last animation I made of the University of Bremen sea ice concentration map, noting that it looked like a blinking flash light. Not entirely fair perhaps as the ice really looks shaky for a while now and weather conditions are making the ice floes diverge and spread out.
Here's the animation where I compare yesterday's date, July 29th, to the same date in previous years. At the end I've added the map of the day before yesterday, just so you can see the change in one day:
I've also made an animation of the PIPS sea ice concentration maps from July 15-28. PIPS gets its sea ice concentration data from the SSM/I satellite sensor and I must say the shape agrees pretty well with Uni Bremen:
Artful Dodger has repeatedly pointed to the ftp-site of the University of Hamburg that also holds sea ice concentration maps, similar to those of Uni Bremen. This animation comprises July 19-29. Getting awfully dark out there:
What the heck, to top it off I've also made an animation of the OSI SAF sea ice concentration maps from July 19-28. The shape is slightly different, but look at that lilac go:
Cryosphere Today has its own 30-day animation, which is great, because it saves me a lot of time.