Stewart Jamieson
@changingice.bsky.social
I am a glaciologist at Durham University, UK who specialises in Antarctic ice sheet behaviour and subglacial topography.
Reposted by Stewart Jamieson
Excited to share that some of the results from my master’s research have been published! Using SAR, we found evidence of winter meltwater persistence on George VI Ice Shelf and upstream of its grounding line 🛰️🧊
www.frontiersin.org/journals/ear...
www.frontiersin.org/journals/ear...
Frontiers | Winter meltwater storage on Antarctica’s George VI Ice Shelf and tributary glaciers, from synthetic aperture radar
The presence and storage of meltwater on Antarctic ice shelves has implications for ice-shelf stability and collapse, while meltwater on grounded tributary g...
www.frontiersin.org
July 23, 2025 at 6:52 PM
Excited to share that some of the results from my master’s research have been published! Using SAR, we found evidence of winter meltwater persistence on George VI Ice Shelf and upstream of its grounding line 🛰️🧊
www.frontiersin.org/journals/ear...
www.frontiersin.org/journals/ear...
Reposted by Stewart Jamieson
Great work by our colleagues Stewart Jamieson and Guy Paxman: "We have been using satellite data to map an ancient river landscape beneath the East Antarctic Ice Sheet:. The landscape has been frozen in time for up to 34 million years." ⚒️🧪
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Extensive fluvial surfaces at the East Antarctic margin have modulated ice-sheet evolution - Nature Geoscience
Extensive flat surfaces observed beneath the East Antarctic Ice Sheet margin were formed by fluvial erosion and have modulated the ice-sheet response to climate change, according to an analysis of rad...
www.nature.com
July 11, 2025 at 10:57 AM
Great work by our colleagues Stewart Jamieson and Guy Paxman: "We have been using satellite data to map an ancient river landscape beneath the East Antarctic Ice Sheet:. The landscape has been frozen in time for up to 34 million years." ⚒️🧪
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Stewart Jamieson
Our @geogdurham.bsky.social researchers, led by @polarguy.bsky.social, have discovered the remains of landscapes thought to have formed when ancient rivers flowed across #EastAntarctica – and they could help predictions of future loss from the ice sheet 👉 www.durham.ac.uk/news-events/...
July 11, 2025 at 10:34 AM
Our @geogdurham.bsky.social researchers, led by @polarguy.bsky.social, have discovered the remains of landscapes thought to have formed when ancient rivers flowed across #EastAntarctica – and they could help predictions of future loss from the ice sheet 👉 www.durham.ac.uk/news-events/...
Reposted by Stewart Jamieson
It was my greatest pleasure to graduate with a PhD from @geogdurham.bsky.social earlier this week! Marking a decade since I started out as a curious undergrad there, Durham was not only a place that taught me the intricacies of Geography, but also where I met some of the brightest and kindest... 1/2
July 11, 2025 at 7:10 AM
It was my greatest pleasure to graduate with a PhD from @geogdurham.bsky.social earlier this week! Marking a decade since I started out as a curious undergrad there, Durham was not only a place that taught me the intricacies of Geography, but also where I met some of the brightest and kindest... 1/2
Reposted by Stewart Jamieson
‘Completely unexpected’: Antarctic sea ice may be in terminal decline due to rising Southern Ocean salinity
theconversation.com/completely-u...
theconversation.com/completely-u...
‘Completely unexpected’: Antarctic sea ice may be in terminal decline due to rising Southern Ocean salinity
Scientists once thought Antarctica might hold onto its sea ice as the world warmed. No longer.
theconversation.com
July 1, 2025 at 4:50 AM
‘Completely unexpected’: Antarctic sea ice may be in terminal decline due to rising Southern Ocean salinity
theconversation.com/completely-u...
theconversation.com/completely-u...
Reposted by Stewart Jamieson
Research finds using AI makes you stupid
From the latest Private Eye, out now.
From the latest Private Eye, out now.
July 1, 2025 at 8:44 AM
Research finds using AI makes you stupid
From the latest Private Eye, out now.
From the latest Private Eye, out now.
Reposted by Stewart Jamieson
What controls seasonal calving in Greenland? New preprint just landed in the EGUsphere - reporting our glacier melange results from fieldwork on the fast ice and (unusually for glaciology) in the melange zone itself in NW #Greenland near Qaanaaq: 🥼❄️🌊⛏️⚒️🧪
egusphere.copernicus.org/preprints/20...
egusphere.copernicus.org/preprints/20...
Mélange or landfast ice: What controls seasonal calving at Greenland outlet glaciers?
Abstract. Landfast sea ice and glacier mélange are part of a continuum of ice forms in front of marine-terminating outlet glaciers in Greenland. Mélange (sikussaq) has been posited to offer a buttress...
egusphere.copernicus.org
June 26, 2025 at 7:54 AM
What controls seasonal calving in Greenland? New preprint just landed in the EGUsphere - reporting our glacier melange results from fieldwork on the fast ice and (unusually for glaciology) in the melange zone itself in NW #Greenland near Qaanaaq: 🥼❄️🌊⛏️⚒️🧪
egusphere.copernicus.org/preprints/20...
egusphere.copernicus.org/preprints/20...
Reposted by Stewart Jamieson
📢 The final ArcticDEM & REMA release is here - and it might be the last. Funding cuts put vital polar data at risk. Help us rally support: take the survey! 🔗https://z.umn.edu/pgc-dem-survey #PolarScience #SavePolarData
April 28, 2025 at 5:37 PM
📢 The final ArcticDEM & REMA release is here - and it might be the last. Funding cuts put vital polar data at risk. Help us rally support: take the survey! 🔗https://z.umn.edu/pgc-dem-survey #PolarScience #SavePolarData
Reposted by Stewart Jamieson
Learn more: www.pgc.umn.edu/news/final-p...
Final Polar DEM Release 2024 & Community Impact Assessment – Polar Geospatial Center
www.pgc.umn.edu
April 28, 2025 at 5:38 PM
Learn more: www.pgc.umn.edu/news/final-p...
Reposted by Stewart Jamieson
New book!! 📕
Antarctica is intimately connected to the rest of our planet, affecting climate, ecosystems, cultures and society. Our new book draws together international experts to explore this influence, and to understand what humans are doing to Antarctica (1/n)
www.routledge.com/Antarctica-a...
Antarctica is intimately connected to the rest of our planet, affecting climate, ecosystems, cultures and society. Our new book draws together international experts to explore this influence, and to understand what humans are doing to Antarctica (1/n)
www.routledge.com/Antarctica-a...
April 22, 2025 at 1:51 PM
New book!! 📕
Antarctica is intimately connected to the rest of our planet, affecting climate, ecosystems, cultures and society. Our new book draws together international experts to explore this influence, and to understand what humans are doing to Antarctica (1/n)
www.routledge.com/Antarctica-a...
Antarctica is intimately connected to the rest of our planet, affecting climate, ecosystems, cultures and society. Our new book draws together international experts to explore this influence, and to understand what humans are doing to Antarctica (1/n)
www.routledge.com/Antarctica-a...
Reposted by Stewart Jamieson
🎉 Imagery from the newly launched Sentinel-1C Copernicus satellite is now accessible via Polar View www.polarview.aq and the Ice Logistics Portal www.icelogistics.info/antarctic?ce...! This addition significantly increases the repeatability of SAR observations in the Polar Regions 🛰️
April 8, 2025 at 4:48 PM
🎉 Imagery from the newly launched Sentinel-1C Copernicus satellite is now accessible via Polar View www.polarview.aq and the Ice Logistics Portal www.icelogistics.info/antarctic?ce...! This addition significantly increases the repeatability of SAR observations in the Polar Regions 🛰️
Reposted by Stewart Jamieson
I wrote up a tiny 2d shallow ice approximation python notebook for my continuum mechanics course.
gist.github.com/grinsted/d5d...
gist.github.com/grinsted/d5d...
shallow ice approximation
shallow ice approximation. GitHub Gist: instantly share code, notes, and snippets.
gist.github.com
March 26, 2025 at 11:56 AM
I wrote up a tiny 2d shallow ice approximation python notebook for my continuum mechanics course.
gist.github.com/grinsted/d5d...
gist.github.com/grinsted/d5d...
Reposted by Stewart Jamieson
Out now! Available in the #C3S data store: ERA5 hourly time-series data on single levels from 1940 to present. As a regridded subset of the full #ERA5 dataset on native resolution, it is designed for retrieving long time-series for a single point.
👉 cds.climate.copernicus.eu/datasets/rea...
👉 cds.climate.copernicus.eu/datasets/rea...
March 19, 2025 at 8:57 AM
Out now! Available in the #C3S data store: ERA5 hourly time-series data on single levels from 1940 to present. As a regridded subset of the full #ERA5 dataset on native resolution, it is designed for retrieving long time-series for a single point.
👉 cds.climate.copernicus.eu/datasets/rea...
👉 cds.climate.copernicus.eu/datasets/rea...
My first achievement of the week. Probably peaked too early.
March 18, 2025 at 8:11 AM
My first achievement of the week. Probably peaked too early.
Reposted by Stewart Jamieson
Finally published @science.org:
Can AI help yield new insights from vast amounts of Earth data?
We use large-scale data and neural nets to find the constitutive laws of glacial ice, which differ from commonly assumed forms in conventional models. #ScienceResearch
www.science.org/doi/10.1126/...
Can AI help yield new insights from vast amounts of Earth data?
We use large-scale data and neural nets to find the constitutive laws of glacial ice, which differ from commonly assumed forms in conventional models. #ScienceResearch
www.science.org/doi/10.1126/...
March 14, 2025 at 3:55 PM
Finally published @science.org:
Can AI help yield new insights from vast amounts of Earth data?
We use large-scale data and neural nets to find the constitutive laws of glacial ice, which differ from commonly assumed forms in conventional models. #ScienceResearch
www.science.org/doi/10.1126/...
Can AI help yield new insights from vast amounts of Earth data?
We use large-scale data and neural nets to find the constitutive laws of glacial ice, which differ from commonly assumed forms in conventional models. #ScienceResearch
www.science.org/doi/10.1126/...
Reposted by Stewart Jamieson
A reminder that abstract submission for the @igsoc.bsky.social Symposium on Ice Streams & Outlet glaciers @geogdurham.bsky.social closes 24th March. We're looking forward to presentations from both contemporary & palaeo perspectives to encourage cross-pollination of ideas & research approaches! ❄️⚒️🧪
⚒️🧪 Registration & abstract submission for the
@igsoc.bsky.social Symposium on Ice Streams & Outlet Glaciers, hosted at @geogdurham.bsky.social from 21st-25th July 2025, is now open! ❄️ Abstracts can be submitted until 24th March & registration is open until 5th May: pay.durham.ac.uk/event-durham...
@igsoc.bsky.social Symposium on Ice Streams & Outlet Glaciers, hosted at @geogdurham.bsky.social from 21st-25th July 2025, is now open! ❄️ Abstracts can be submitted until 24th March & registration is open until 5th May: pay.durham.ac.uk/event-durham...
March 17, 2025 at 10:30 AM
A reminder that abstract submission for the @igsoc.bsky.social Symposium on Ice Streams & Outlet glaciers @geogdurham.bsky.social closes 24th March. We're looking forward to presentations from both contemporary & palaeo perspectives to encourage cross-pollination of ideas & research approaches! ❄️⚒️🧪
Reposted by Stewart Jamieson
Joint RINGS & @royalsociety.org Meeting on Ice-Sheet Bed Measurements, 6–9 May 2025, University of Edinburgh
📍 8 May: Advancing Antarctic bed topography data
📍 9 May: #AntarcticRINGS initiatives in the Antarctic Peninsula & Weddell Sea
scar.org/scar-news/cr...
Please register in advance.
📍 8 May: Advancing Antarctic bed topography data
📍 9 May: #AntarcticRINGS initiatives in the Antarctic Peninsula & Weddell Sea
scar.org/scar-news/cr...
Please register in advance.
March 10, 2025 at 4:50 PM
Joint RINGS & @royalsociety.org Meeting on Ice-Sheet Bed Measurements, 6–9 May 2025, University of Edinburgh
📍 8 May: Advancing Antarctic bed topography data
📍 9 May: #AntarcticRINGS initiatives in the Antarctic Peninsula & Weddell Sea
scar.org/scar-news/cr...
Please register in advance.
📍 8 May: Advancing Antarctic bed topography data
📍 9 May: #AntarcticRINGS initiatives in the Antarctic Peninsula & Weddell Sea
scar.org/scar-news/cr...
Please register in advance.
Reposted by Stewart Jamieson
Reposted by Stewart Jamieson
Heartening to see so many people organise for facts. Solidarity to all colleagues in the US #standupforscience2025
March 7, 2025 at 6:28 PM
Heartening to see so many people organise for facts. Solidarity to all colleagues in the US #standupforscience2025
Reposted by Stewart Jamieson
February 21, 2025 at 1:33 PM
Reposted by Stewart Jamieson
Glad to contribute so much data to this project from mass balance work 1984-2024.
February 20, 2025 at 12:24 AM
Glad to contribute so much data to this project from mass balance work 1984-2024.
Reposted by Stewart Jamieson
This (and this is just the tip of the iceberg) is what happens when you try to run government like a business.
25-50% of staff will be laid off at NSF, and with it, no doubt, an end of US supremacy in science. Absolutely catastrophic. 🧪⚒️❄️
www.politico.com/news/2025/02...
25-50% of staff will be laid off at NSF, and with it, no doubt, an end of US supremacy in science. Absolutely catastrophic. 🧪⚒️❄️
www.politico.com/news/2025/02...
Science funding agency threatened with mass layoffs
National Science Foundation staff heard the plans at a meeting Tuesday.
www.politico.com
February 4, 2025 at 11:41 PM
This (and this is just the tip of the iceberg) is what happens when you try to run government like a business.
25-50% of staff will be laid off at NSF, and with it, no doubt, an end of US supremacy in science. Absolutely catastrophic. 🧪⚒️❄️
www.politico.com/news/2025/02...
25-50% of staff will be laid off at NSF, and with it, no doubt, an end of US supremacy in science. Absolutely catastrophic. 🧪⚒️❄️
www.politico.com/news/2025/02...
Reposted by Stewart Jamieson
The #Greenland Ice Sheet is cracking open more rapidly as it responds to climate change. Research led by @tomchudley.bsky.social from @geogdurham.bsky.social found crevasses had significantly increased in size and depth in just five years 👉 bit.ly/4aKE8l7
@leverhulme.bsky.social #DUresearch
@leverhulme.bsky.social #DUresearch
February 4, 2025 at 4:05 PM
The #Greenland Ice Sheet is cracking open more rapidly as it responds to climate change. Research led by @tomchudley.bsky.social from @geogdurham.bsky.social found crevasses had significantly increased in size and depth in just five years 👉 bit.ly/4aKE8l7
@leverhulme.bsky.social #DUresearch
@leverhulme.bsky.social #DUresearch
Reposted by Stewart Jamieson
Beautiful Sentinel-2 imagery of George VI Ice Shelf with lots of meltwater from yesterday. The patterns that this water produces is like artwork! Fossil Bluff is shown in the second image, and Hodgson Lake shown in the last - a former subglacial lake sealed under ice thick perennial ice ❄️
January 30, 2025 at 5:14 PM
Beautiful Sentinel-2 imagery of George VI Ice Shelf with lots of meltwater from yesterday. The patterns that this water produces is like artwork! Fossil Bluff is shown in the second image, and Hodgson Lake shown in the last - a former subglacial lake sealed under ice thick perennial ice ❄️
Currently 50 hours without power since storm. @northernpowergrid.bsky.social are suggesting it will be at least another day. Old energy infrastructure in this region seems very vulnerable to our increasingly stormy weather.
January 26, 2025 at 6:01 PM
Currently 50 hours without power since storm. @northernpowergrid.bsky.social are suggesting it will be at least another day. Old energy infrastructure in this region seems very vulnerable to our increasingly stormy weather.