Jakobshavn Isbrae (Ilulisat Glacier) produces 10% of Greenland's icebergs (Wikipedia). Ten years of @esa.int Copernicus #Sentinel-1 SAR data shows ice pouring into Baffin Bay. Winter advance and summer retreat of the ice front show how calving is controlled by seasonal freeze-up of fjord ice melange

Nested glacier surges! This is Liestolbreen in Svalbard, surging into Nathorstbreen (which itself surged from 2008), and then being surged into by Doktorbreen. All brought to you by the magic of Sentinel-1 SAR

The journey of Iceberg A23a (largest, oldest, 'living' berg) since the beginning of 2024, as seen by NASA MODIS, including its five-month pirouette on the Taylor Column, short embrace by the pack ice in August, grounding on South Georgia's shelf in April, and baby calf. Watch this space for updates!

Large fractures continue to open up at the grounding line of Thwaites Glacier Eastern Ice Shelf. Animation contains @copernicusland.bsky.social #Sentinel-1C data alongside 1A and 1B

Kronebreen is one of the fastest flowing glaciers in Svalbard. Ten years of @esa.int #Sentinel-1 data shows us both the annual advance/retreat cycle characteristic of melt-undercut calving in a seasonally warmed fjord, and the long-term retreat caused by climate warming. Email me for hi-res version

So exciting! Sentinel-1C (launched December) is finally delivering data to users and we can get back to exploring 6-day-repeat interferometry and feature-tracking such as this lovely new velocity map of Helheim Glacier in East Greenland. Nice one Copernicus!

Update on Thwaites Glacier Eastern Ice Shelf from Copernicus Sentinel-1 SAR. Downloadable version here: aluckman4.wixsite.com/ade-s-world-...

As polar night ends and sunlight begins to return to Longyearbyen, lets see how the Svalbard seasons progressed last year - from ice-locked fjords in March, through to the first snows of October. Thanks to NASA MODIS via GIBS. Download at full resolution here: aluckman4.wixsite.com/ade-s-world-...

Pine Island Glacier accounts for a large proportion of recent Antarctic ice loss. This 7.5 year animation from Sentinel-1 shows the weakening of the lateral margins and the stochastic nature of the calving process. Grab a full-screen version here: aluckman4.wixsite.com/ade-s-world-...

Sentinel-1 SAR data from the EU Copernicus program can be used to measure ice surface speed. This decade long time-series of mean annual speeds shows the ebb and flow of glacier surges around Svalbard. Download a full-resolution version here:
aluckman4.wixsite.com/ade-s-world-...

Thwaites Glacier calves kilometre-scale icebergs every few weeks. Here's an animation of the process from Sentinel-1. For a longer and higher-resolution version, have a look here: aluckman4.wixsite.com/ade-s-world-...

Two Svalbard glacier surges (Arnesenbreen and Nordsysslebreen) in one frame, as seen by Sentinel-1. Hi-res video available here: aluckman4.wixsite.com/ade-s-world-...

Animation of Denman Glacier in East Antarctica from Sentinel-1 SAR. If you can't make out the fascinating surface movement at this scale, have a look at the full resolution version here aluckman4.wixsite.com/ade-s-world-...

This is the surge of Hamarbreen and Sefstrombreen, a pair of glaciers in Svalbard, as seen by #Sentinel-1. There had been interesting dynamic activity in the upper region (Hamarbreen) for some years. The speed with which the lower surge was triggered is impressive.

Is this the final death throes of the Thwaites Eastern Ice Shelf? Let's hope that tomorrow's launch of #Sentinel-1C is successful and polar ice monitoring can get even better!