I've been playing around some more with my GIF animator and made some animated GIFs of sea ice concentration maps. Because they're not so big in size and show some discrepancies I thought it might be interesting to combine them in one blog post, just to see how it looks. Perhaps I could use them for updates every two weeks.
These images all show the ice concentration between June 5th and 15th. You can click on them for (slightly) bigger resolution.
Allow me to start off with the Uni Bremen sea ice concentration map:
I notice there's quite a bit of day-to-day variation. I don't know what's the reason for that. If you look at satellite images of the Beaufort Sea for instance you see there's a lot of floes packed very close together. I can imagine currents and/or winds (and the Beaufort Gyre) changing things radically within 24 hours, but that could also just be my imagination. Perhaps it has something to do with clouds or small lakes on the ice.
I've made a graph from the OSI SAF (I believe it's Norwegian?) sea ice concentration map as well:
Here the day-to-day variation looks more 'natural'.
I've decided to have a look as well at some maps that are popular at WUWT. I've been wondering for a while now why on the Cryosphere Today map comparisons seem to have 2010 showing a very high ice concentration in the Arctic Basin compared to other years. Is this real or is it some artefact due to different colour scales and lower resolution?
Hardly any change in ice concentration in the Arctic Basin, and the polynyi in the Beaufort and Kara Sea also look smaller than on other maps. For comparison you can have a look at Cryosphere Today's own 30-day animation of the map on the front page.
I'll end with the sea ice concentration map from the Navy's Polar Ice Prediction System (PIPS):
Here we see some yellow and green forming in the middle of the Arctic Basin. That doesn't look right to me, so I'll keep my eye on it for a few days.