How does multiyear sea ice get blown out of position over a couple of months? I marked its original position with a contour, and then overlaid the ice motion vectors on the ice type map. Thanks to OSISAF for the data.

Potential vorticity (purple is negative) during the exceptional January of 2021.

As well as watching weather advect around the Arctic, notice how the purple system just sits over the Beaufort Sea.

Paper about it here:
doi.org/10.1038/s432...

Modelled snow depth on Arctic sea ice in SnowModel-LG, for one year.

Full 1981-2020 video here
www.youtube.com/watch?v=S9bd...

How does sea ice intersect with the North East passage?

Red line indicates line from my house to Beijing, where I presented this slide last year.

The seasonal distribution of Arctic amplification, vs the seasonal distribution of global warming. Again against a midcentury baseline.

Some science - global temperatures against a mid-century baseline, with regions that have exceeded 1.5C shaded.

Fishing pancake ice floes out of the Weddell sea during a massive storm-induced algal bloom.

Releasing the daily weather balloon at Rothera near midwinter - this data feeds into World Meteorological Organisation's global network of 8000+ stations, plus the global historical climatology network.

Swell penetrating the marginal ice zone and hitting the ice shelf at Neumeyer station. Taken from the back deck of RV Polarstern.

John Yackel from U Calgary riding with our dual-frequency radar after a long day on the sea ice.

Helping the Rothera marine team with their CTD cast.

(We all know nothing's going on below the halocline, right?)

My co-winterer Vishnu Nandan dealing with a blizzard. If you want to go to Antarctica you need a warm hat.

Inspired by @zacklabe.com to put my invited talk slides online.

www.robbiemallett.com/presentations

One thing you'll notice is that I'm fond of the animated GIF!

A thread of my favourites, starting with not-graphs.

[Divers surfacing from under Antarctic sea ice at Rothera]