Adrian Luckman
Polar scientist studying ice dynamics using satellite data. I create and share animations of icy activity from satellite images
- Reposted by Adrian Luckman💥 Boom! And it's just happened. The huge volumes of meltwater that had collected on the surface of iceberg A23a have triggered a massive and catastrophic hydrofracture event. Much of the berg has turned to mush. Three major segments remain, the largest about 500 sq km.
- Reposted by Adrian LuckmanOne big paddling pool becomes three. Today's view of iceberg A23a (left) and a view from the end of December (right). Notice how the raised rim effect, holding in surface meltwater, has re-established on all three main segments of the broken berg. A23a is turning to slush puppie.
- Reposted by Adrian LuckmanIceberg A-23A first broke off the Filchner Ice Shelf in 1986. NASA EO recently shared what's left, "waterlogged berg on December 26, 2025, extensive pools of blue meltwater were visible on its surface" and still one of the largest in the ocean. More at science.nasa.gov/earth/earth-...
- Reposted by Adrian LuckmanSentinel-1's decade of essential data over shifting ice sheets - @esa.int www.esa.int/Applications...
- Huge fractures opening at the Thwaites Glacier Eastern Ice Shelf grounding line
- Reposted by Adrian LuckmanAstonishingly, sea ice still hasn't started to reform over the Barents Sea area yet of the #Arctic. This includes record low conditions around Svalbard as well. It's been a very bad few months across the region. Check out more graphics here: zacklabe.com/arctic-sea-i...
- Reposted by Adrian Luckman⚒️ Article: Record grounded glacier retreat caused by an ice plain calving process @adrianluckman.bsky.social @etienneberthier.bsky.social @drnaomio.bsky.social www.nature.com/articles/s41...
- Reposted by Adrian LuckmanSwansea Uni co-author @adrianluckman.bsky.social put this Sentinel-1 movie together. "Although the paleo record indicates some very rapid retreats in the past, the pace of retreat of Hektoria Glacier and its neighbours is unprecedented in the observational record," Adrian says.
- Reposted by Adrian LuckmanIceberg A23a continues to break apart in the southern Atlantic Ocean, near the island of South Georgia.
- Reposted by Adrian LuckmanWe have a new preprint out reviewing the monitoring & detection of Svalbard surging glaciers: eartharxiv.org/repository/v... We also compiled a new database of Svalbard's surge-type glaciers: zenodo.org/records/1524... @dannipearce.bsky.social @hazlovell.bsky.social @adrianluckman.bsky.social
- Reposted by Adrian LuckmanCheck out this time-lapse video of waves eroding an ice front from an experiment conducted in our cryogenic wave tank at the University of Wisconsin-Madison. The tank is housed in a walk-in freezer, and the waves are precisely controlled. This video captures about an hour of wave erosion.
- Reposted by Adrian LuckmanIn case you were wondering... Iceberg A23a seen cruising around South Georgia today by Meteosat 12. The old berg still has an area of 2,846 sq km.
- Reposted by Adrian LuckmanI hope everyone on this website thinks very carefully about this graph and then considers whether or not they need to reorder their priorities at all.
- 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
- Reposted by Adrian LuckmanSentinel-1 has finally got a clear view of iceberg A23a (13/6/25). The berg is much diminished as it skirts around South Georgia. And the US National Ice Center has updated its stats: A23a is now only the world's second biggest berg at 829.79 sqNM, or 2846,11 sqKM.
- Reposted by Adrian Luckman📣 PhD position on #WorldSaltmarshDay! 🌱 👉Develop and deploy open-source sensors to measure #biophysical properties to predict #coastal #wetland #restoration success @ Swansea Uni + 3-month placement with Welsh Gov. Plz share! 🙏 www.swansea.ac.uk/postgraduate...
- 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
- Reposted by Adrian LuckmanThe movement of iceberg A23a over the past seven days. It's moved about 80km to the southeast of the position where it grounded off the coast of South Georgia in early March. Zoomed in animation from Meteosat-12.
- Reposted by Adrian LuckmanWith days shortening at South Georgia (it's about 8 hours from sunrise to sunset), optical satellite coverage in the region is getting more restricted. Not so for Meteosat, which images the Europe/Africa hemisphere regardless of season. Hence we get a few views of iceberg A23a. Still grounded.
- Reposted by Adrian LuckmanThere was a spectacular view of iceberg A23a on 3 May. Clear skies over the berg and South Georgia. By my measurement, A23a is no longer the world's biggest iceberg. At ~2850 sq km, it's now bested by D15a - but only just. The US National Ice Center will be the final judge on the matter.
- 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
- Reposted by Adrian LuckmanUS National Ice Center formally catalogues A23c, the big off-cut from grounded behemoth A23a. Daughter berg is ~130km² - or 2x Manhattan Island. A23a (~3,100km²) only needs to lose another ~30km² to hand "World's Biggest Iceberg" title to D15a (~3,070km²) in Amery Sea.
- Reposted by Adrian LuckmanA big chunk has broken away from iceberg A23a, currently grounded at South Georgia. I calculate ~110 sq km. Looks to have fractured sometime on 11/12 April. It will get a US National Ice Center designation. It should be A23c, unless I'm mistaken.
- Fantastic new animation from ESA featuring CryoSat-2 & Sentinel-1 animations, highlighting our Nature-Comms paper "The influence of subglacial lake discharge on Thwaites Glacier ice-shelf melting and grounding-line retreat" www.nature.com/articles/s41... led by Noel Gourmelan: youtu.be/vRMeiMsQkBE
- So sorry for the typo Noel Gourmelen!
- 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!
- Reposted by Adrian LuckmanYou don't need to be a seismologist to look at this figure and understand the huge forces that ripped through Myanmar on March 28. The M7.7 quake ruptured fully 500km of the Sagaing Fault, moving its western flank north, with >3m of slip at the surface. Data from EU Sentinel satellites.
- Update on Thwaites Glacier Eastern Ice Shelf from Copernicus Sentinel-1 SAR. Downloadable version here: aluckman4.wixsite.com/ade-s-world-...
- Reposted by Adrian LuckmanIceberg A23a pictured from the ISS. The space station is almost as far south as it can reach here (51.5° S, 49.0° W - altitude of 422km). Picture taken on 14 March, so the berg had been grounded at South Georgia for a fortnight by this time.
- 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-...
- Reposted by Adrian LuckmanEurope had its least snowy winter (Dec-Feb) in over 50 years. #ThisIsFine
- Reposted by Adrian LuckmanThe extent of sea ice around the world continues to remain the smallest in our satellite observation history for this time of year... More graphs at zacklabe.com/global-sea-i.... Data from @nsidc.bsky.social.
- Reposted by Adrian LuckmanThe world's largest iceberg, A23a, appears to have grounded close to South Georgia. We've been monitoring and mapping this berg for many years now and we're watching closely to see what it might do next! These maps show its route since 1986 and the latest position to the SW of South Georgia ❄️🐧 1/3
- Reposted by Adrian Luckman
- Reposted by Adrian Luckman
Pisgana West (Adamello, IT) 1990 | 2021 Remember the 1990s? ⌚️❄️ Seems so far away from a glaciological point of view! 😱 And the most recent pic here was taken before the recent record-breaking heatwaves which wiped out 10% of Alpine ice in just 2 years! 🔥 📷 Servizio Glaciologico Lombardo - 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-...
- Reposted by Adrian LuckmanAmericans proposed that Ukraine concede half of the profits from its mineral rights in perpetuity... in exchange for essentially nothing. This is not a monetary proposition, let alone a "deal," but rather the demand that Ukraine become a permanent American colony. snyder.substack.com/p/recoup-the...
- Reposted by Adrian LuckmanIn their latest update, the GLAMBIE Team show that the pace of glacier melting has increased by 36%. Community assessments are vital as they give non-experts the confidence to act on their findings. www.bbc.co.uk/news/article...
- Reposted by Adrian LuckmanAmid the majestic beauty of nature and the noble pursuit of science, the toilet tent can start to present pressing logistical issues... Today's ICEWORLD is all about a #polarscience investigation into ice shelf rifts and 'suture' ice on the Larsen C Ice Shelf ⬇️ podcasts.apple.com/gb/podcast/s...
- Reposted by Adrian LuckmanThe idea of renaming "Greenland" to "Red, White and Blueland" must have come from our 2020 Science paper where we (Ben Smith and 14 others) used NASA's ICESat and ICESat-2 laser altimetry to show how much the ice sheet surface went up or down in 16 years.
- Reposted by Adrian LuckmanA new iceberg, ~30x14 km in size, recently calved from the southern end of the George VI Ice Shelf. It's called A84 and is already making quite an impact, bumping into the Stange Ice Shelf over the weekend! These Copernicus Sentinel-1 images from Polar View show the new berg over the last few days.
- 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-...
- Reposted by Adrian LuckmanThis is by far the best modelling attempt of the Alpine Ice Field during the LGM (35-18 ka)! 🧊⌚ Thinner ice than previous attempts and better fit to the trimlines ❄️ Must read! www.nature.com/articles/s41... Don't miss the YT vids www.youtube.com/watch?v=wJ5-... Congrats @legertancrede.bsky.social!
- 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-...
- Reposted by Adrian LuckmanApplications are OPEN for our tuition-FREE, multi-day expeditions blending science, art, and backcountry travel! Open to high school girls* (ages 16-18 on June 1, 2025). Visit inspiringgirls.org for more details. Share to help spread the word - we can't wait to adventure! ♥️ #InspiringGirls
- Reposted by Adrian LuckmanSorry - a not so very good Sunday ice update. #Arctic sea ice extent is easily the *lowest* on record to kick off a new year (JAXA data)... 🌊 • about 610,000 km² below the 2010s mean • about 2,160,000 km² below the 1980s mean Additional long-term sea ice graphs: zacklabe.com/arctic-sea-i...
- 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-...
- Reposted by Adrian LuckmanA glacier that is far from being in peak condition, it's still beautiful #EarthArt. The ogive stripes are still really clear on the #MerDeGlace even though the front looks like it's becoming debris-covered.
- Reposted by Adrian LuckmanTo round of the year my wonderful friend @helen-amanda.bsky.social has been awarded the prestigious Seligmann Crystal by the International Glaciology Society !!!! What fabulous news !!! 🤩🎊🎉🥂🥳🛰❄️🧊🧪🍾🎆🌍 www.igsoc.org/about/awards...
- Reposted by Adrian LuckmanJust updated my visualization of change in land ice mass as observed by GRACE(-FO) satellite in #Antarctica (left) and #Greenland (right) 🧊📉🌊 Methods can be found at climate.nasa.gov/vital-signs/.... My graphic can also be downloaded: zacklabe.com/arctic-sea-i....
- 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-...
- Reposted by Adrian LuckmanA23a has finally escaped the vortex! 🏊♀️🌀 The biggest iceberg in the world is on the move again after a casual half-year sabbatical spent spinning in circles. Our @magic.bas.ac.uk colleagues have illustrated A23's super circuitous 2024 journey via satellite imagery ⬇️ www.bas.ac.uk/media-post/w...
- Reposted by Adrian LuckmanCongratulations to my collaborator and friend, Laurie Padman @lpadman.bsky.social, on being named an AGU Fellow. Well deserved 🎉🥂
