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Keir Nichols

@cosmokeir.bsky.social
366 followers 342 following 43 posts

Scientist at SUERC/University of Glasgow 🧪 PhD - Tulane ⚜️🏔️ Geographer masquerading as a geologist (he/him) linktr.ee/keirnichols

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Reposted by Keir Nichols
Rob Larter @polarrobs.bsky.social · 21/03/2026
🧵🧪❄️🌊As today is UN World Day for Glaciers I'm taking the opportunity to post this reminder that the main reason nobody can confidently predict how much sea-level will rise over the rest of this century and beyond is "deep uncertainty in ice sheet processes" (IPPC AR6). #WorldDayOfGlaciers #Sealevel
An ice cliff at the edge of the floating ice shelf in front of Thwaites Glacier, within which several crevasses can be seen. In the foreground is an area of calm water, within which there is a small sea ice floe that a seal is resting on.
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David Small @davidsmall.bsky.social · 05/02/2026
🚨job opportunity🚨 Durham is advertising 3-year fellowships (any field). We are very keen to hear from Antarctic/Cryo people who might be interested in joining a great group. The positions come with some travel & research funds. See here for details or get in touch www.durham.ac.uk/research/ins...
durham.ac.uk
addison-wheeler-fellowship - Durham University
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Rob Larter @polarrobs.bsky.social · 26/10/2025
🧪🧵 Future change to #ThwaitesGlacier, Antarctica constitutes the largest uncertainty in #sea-level rise forecasts. The Science Coordination Office of the International Thwaites Glacier Collaboration recently issued a briefing document summarising some key findings - thwaitesglacier.org/findings
Image showing front page of briefing document
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Caroline Clason @carolineclason.bsky.social · 13/10/2025
Excited to advertise a new interdisciplinary PhD opportunity at @geogdurham.bsky.social - "From ice to ecosystem: assessing the risk of glacier melt and legacy contamination for reindeer in Sápmi (Lapland)" ❄️ 🦌 To learn more about the project and how to apply visit: iapetus.ac.uk/studentships...
Reindeer in Ljungris, Berg Municipality, Jämtland County, Sweden. Arild Vågen.
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Stephen Roberts @stever60.bsky.social · 10/10/2025
Applications are now open for this years’ @iapetusdtp.bsky.social PhD projects … including this one investigating ice sheet and glacier history of the Sør Rondane Mountains in East Antarctica by developing in-situ 14C cosmogenic exposure dating methods - more here: iapetus.ac.uk/studentships...
Black and white landscape photo of the Sør Rondane mountains in East AntarcticaBlack and white photo of three people on top of the Utsteinen Nunatak in the Sor Rondane mountains in East Antarctica - some of the samples in this project were taken from this massif and its surrounding moraineA black and white landscape photo of the Utsteinen Nunatak in the Sør Rondane mountains in East Antarctica taken while collecting cosmogenic exposure dating samples from the Teltet Nunatak Black and white photo of two people walking across blue ice of the East Antarctic ice sheet surrounding the Sor Rondane mountains
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Keir Nichols @cosmokeir.bsky.social · 09/10/2025
Applications are now open for a Glasgow-based Iapetus DTP project centred on using in situ 14C to study glacier histories in East Antarctica! tinyurl.com/3ddvynn2 @stever60.bsky.social @uofglasgow.bsky.social @iapetusdtp.bsky.social @bas.ac.uk
A person standing on a moraine which is in front of a mountain. The mountain is in East Antarctica, with a small glacier between the mountain and moraine. The person is using a saw to collect a rock sample from the surface of a boulder on top of the moraine. A photo taken from a mountain in East Antarctica, with moraines and blue ice in the foreground, and the vast East Antarctic Ice Sheet extending to the horizon. Some small mountains (nunataks) are poking out above the surface of the ice sheet at varying distances.
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Stephen Roberts @stever60.bsky.social · 08/10/2025
Applications are now open for this years’ BAS Iapetus PhD projects … including one working on our Big Thaw project investigating extreme precipitation in Nepal from sediment core and climate data - more details in this link @iapetusdtp.bsky.social @bas.ac.uk iapetus.ac.uk/studentships...
Photo of Lake Tilicio in Nepal with an inset core showing our team collecting sediment cores from the lake
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Ruth Mottram @ruthmottram.eurosky.social · 03/10/2025
🚨New paper 🚨@natgeosci.nature.com Greenlandification of Antarctica - comment by me + colleagues @dmidk.bsky.social @eo4cryo.bsky.social + @universityofleeds.bsky.social showing how Antarctica increasingly resembles Greenland- drawing on a mass of work from @esaclimate.bsky.social rdcu.be/eJiqJ
rdcu.be
The Greenlandification of Antarctica
Nature Geoscience - Climate and ice sheet processes in Antarctica increasingly reflect those observed earlier in Greenland. Applying process insights from Greenland can improve projections of...
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Simon Cook 🏔❄🌊 @glaciocook.bsky.social · 29/09/2025
🏔️❄️New paper: “Multi-temporal DEMs used to quantify the geomorphological impact of a late 20th century glacier re-advance at Schwarzberggletscher, Switzerland”. www.sciencedirect.com/science/arti... #glaciers #climatechange #sfm #geomorphology
Archive images of Schwarzberggletscher, Switzerland, showing the glacier front and its advance to produce a moraine. Repeat DEMs from the 1974 to 2010 show that the glacier advanced and built a moraine, but that the landscape thawed since the early 1990s.
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EDIG @ediggeo.bsky.social · 15/09/2025
📣 📣 We are back! 📣 📣 After more than 2 years away from social media, we are excited to reconnect and engage with the community. Life changes, new jobs, and moves around the world have kept us quiet - but behind the scenes, we have been planning and building. Now we are ready to relaunch EDIG! 1/6
The EDIG logo. The EDIG Logo is a blue and green (representing land masses and the ocean) globe, with a grey banner wrapping around its centre. Within the grey banner are the letters 'E. D. I. G'. There are three blue hands holding up the globe.
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Keir Nichols @cosmokeir.bsky.social · 10/09/2025
Chuffed to be included in this review paper on the Foundation-Patuxent-Academy ice stream system, Antarctica led by Neil Ross - you can see the preprint in open review here: doi.org/10.5194/egus... - featuring the busiest figure I've ever made 🇦🇶🧊
A busy figure with three panels (a, b, and c). Panel a is a plot with distance along centreline (in km) on the x axis and elevation (in metres above sea level) on the y axis. The plot shows the location (along flowline) and elevation of samples collected for cosmogenic nuclide exposure dating at sites adjacent to the Foundation Ice Stream. Panel b is a map that shows the Foundation Ice Stream (and neighbouring ice streams and glaciers), the flowline used in panel a, and the locations from which the samples in panel a were collected. Panel c is a plot with age (in thousands of years) on the x axis and elevation above modern ice surface (in metres) on the y axis. Exposure ages (between 20 ka and the present day) from the sites in panels a and b are plotted, with most of them falling between ~4 and 9 ka. The ages show that the Foundation Ice Stream thinned by hundreds of metres (at least 700 to 800 m) between about 9 and 4 ka.
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Keir Nichols @cosmokeir.bsky.social · 22/08/2025
New paper alert 🚨🏔️ We use 10Be exposure dating and ELA reconstructions to shed light on glacier advances in the tropical Andes during the Younger Dryas. You can find the paper led by Neil Glasser @aberuni.bsky.social in Scientific Reports tinyurl.com/uwmt8rcn
tinyurl.com
Younger Dryas glacier advances in the tropical Andes driven by increased precipitation - Scientific Reports
Scientific Reports - Younger Dryas glacier advances in the tropical Andes driven by increased precipitation
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Will Harcourt @willharcourt.bsky.social · 22/08/2025
We 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
eartharxiv.org
Surging glaciers in Svalbard: Observing their distribution, characteristics and evolution
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Helen Millman @helenmillman.bsky.social · 01/08/2025
Are you an ECR working in some kind of cryosphere-related field? Are you interested in learning about international climate diplomacy and the COP process? Do you want to go to COP30 in Brazil in November? If yes, apply to volunteer with ICCI: iccinet.org/cop30-cryosp... It's an experience!
Large plenary meeting room at COP27. There are rows of desks, with people seated at the desks, facing a large stage with two big screens either side of it.A diorama of 3 polar bears standing on a small iceberg, wearing orange lifejackets. One of them is looking at a penguin that appears to have been hanged.Screenshot of text from The Times. It reads: "Then, this year, I arrived at the Glasgow Cop to see that the Qatar stand - the stand of the country with the highest per capita emissions in the world
- was especially popular because it had the best coffee. The Indonesian stand had the best food but a stern sign saying you had to listen to a talk before eating. The Tuvalu stand, just beyond it, inexplicably has a diorama of polar bears lynching a penguin."
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Bipedal Meatbag @bipedalmeatbag.bsky.social · 25/07/2025
We were lucky enough to deploy a ground-based radar during one of Kīlauea’s 2023 eruptions and captured some interesting deformation signals — you can lear more about it in our open access paper, lead by USF graduate student Taha Sadeghi Chorsi! link.springer.com/article/10.1...
link.springer.com
Small intrusions may help maintain Kīlauea’s lava lake - Bulletin of Volcanology
We collected rapid-repeat radar data capturing the deformation of the active Halema‘uma‘u summit lava lake surface on January 19, 2023, an otherwise quiescent period during the January–March 2023 erup...
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Mike K @mikekapglacier.bsky.social · 14/07/2025
New paper alert! Holocene glacier and climate changes in central Patagonia. Led by Carly Peltier. Also with @rlsoteres.bsky.social , and others... authors.elsevier.com/c/1lN53-4PSD...
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Pete Tuckett @petetuckett.bsky.social · 04/07/2025
I’m delighted to share that our new paper is now out in @natclimate.nature.com! Our long-term, monthly Antarctic-wide dataset of surface meltwater shows that the East Antarctic Ice Sheet is becoming increasingly prone to surface meltwater ponding.
nature.com
Continent-wide mapping shows increasing sensitivity of East Antarctica to meltwater ponding - Nature Climate Change
This study provides a continent-wide assessment of surface meltwater area in Antarctica between 2006 and 2021, highlighting recent increases in magnitude and variability in East Antarctica, with indic...
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Melaine Le Roy @subfossilguy.bsky.social · 01/06/2025
People often think ice is 'millennial' in the Alps 🧊⏱️ It is not 🤔 Or in very small patches, very high up, and very close to the bedrock 🏔️ Look at this charred spruce needle fragment found at 73m deep, on top of Ortles (3859 m asl) Iit is 2232 yr old! 🤩 1/
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Bethan Davies @iceybethan.bsky.social · 30/05/2025
The #Blatten Landslide and the role of climate change. As the lake builds up behind the landslide dam, this disaster continues to unfold. www.antarcticglaciers.org/2025/05/birc...
antarcticglaciers.org
Birch Glacier and Blatten Landslide - AntarcticGlaciers.org
The collapse of Birch Glacier and the devastating landslide that impacted the Swiss village of Blatten occurred as a result of supraglacial landslides.
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James Kirkham @jdkirkham.bsky.social · 20/05/2025
⚠️New study shows that even warming of 1.5°C is too high to prevent long term global damage from the melt of Earth's polar ice sheets 🌊❄️ @geogdurham.bsky.social @iccinet.bsky.social www.nature.com/articles/s43...
nature.com
Warming of +1.5 °C is too high for polar ice sheets - Communications Earth & Environment
Warming of +1.5 °C above pre-industrial levels is too high for the Greenland and Antarctic ice sheets, and even the current climate forcing of +1.2 °C is likely to lead to several meters of sea-level ...
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Keir Nichols @cosmokeir.bsky.social · 06/05/2025
The PGC were an invaluable resource during my PhD in the US and have been super helpful for the Thwaites project, too. This will be a huge loss for the polar science community, I hope they're able to survive and support US colleagues in the future
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Claire G. Griffin @polargriffin.bsky.social · 05/05/2025
Absolutely devastating news. I haven't worked directly with them, but PGC has done such great work. ArcticDEM is a masterpiece of geospatial data.
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Roger Creel @rogercreel.bsky.social · 28/04/2025
North American ice sheets may have persisted into past warm periods --- and this matters for projections of future ice sheet mass loss. Check out our new preprint! eartharxiv.org/repository/v... With @bobkopp.net , @drandreadutton.bsky.social , and co.
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Keir Nichols @cosmokeir.bsky.social · 14/04/2025
I'm thrilled to have started a new role as an "In situ Radiocarbon Scientist" at @uofglasgow.bsky.social/ SUERC/ @isotopesuk.bsky.social! I'll be setting up a new NEIF in situ 14C lab over the next year 🧪🏔️
A photo of me standing in front of the Gilbert Scott Building at the University of Glasgow. As per Google, "the building is a striking Gothic Revival structure...and features an iconic bell tower, one of Glasgow's most notable landmarks." A photo of the side of the AMS Laboratory at the Scottish Universities Environmental Research Centre (SUERC) with lovely clear blue skies above it. A sign on the side of the building includes the logo for SUERC, "AMS Laboratory", and different universities and organisations associated with it.
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Simon Cook 🏔❄🌊 @glaciocook.bsky.social · 01/04/2025
🏔️🌊❄️NEW PAPER in Natural Hazards & Earth System Sciences (NHESS) Causes, consequences and implications of the 2023 landslide-induced Lake Rasac glacial lake outburst flood (GLOF), Cordillera Huayhuash, Peru. nhess.copernicus.org/articles/25/... #glof #landslide #climatechange #climate #hazards
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Ruth Mottram @ruthmottram.eurosky.social · 19/03/2025
🚨 New position alert! 🚨 Climate and ice sheet modelling at DMI, come and work with me and my colleague Christian Rodehacke on coupled ice sheet - climate models. 3 year position in #HorzionEurope #LiquidIce candidate.hr-manager.net/ApplicationI...
candidate.hr-manager.net
Scientist for Modeling Ice Sheet–Climate Interaction
Are you interested in working with climate and ice sheet models? And motivated by understanding climate change in the Arctic and Antarctic regions? Here is a gr
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Prof Andrew Mackintosh @andrewmackintosh.bsky.social · 19/03/2025
📢 New paper alert 📢 Amazing interdisciplinary effort by Emma bringing together Antarctic ice sheet and biological evidence. But what does it tell us? 👇
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Emma Cooper @emlcpeer.bsky.social · 19/03/2025
Our new paper, published today in Quaternary Science Reviews: Can we use springtails to improve our understanding of Antarctic Ice Sheet history? — A case study from Dronning Maud Land www.sciencedirect.com/science/arti... with: Mark Stevens @rsjones.bsky.social @andrewmackintosh.bsky.social 1/4
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Tim Lane @glaciologytim.bsky.social · 24/02/2025
Interested in submitting a Marie Curie Postdoctoral Fellowship with me at Aarhus University? Send me a message or email! The university offers an excellent Masterclass to support your application! medarbejdere.au.dk/administrati... @au.dk
medarbejdere.au.dk
MSCA PF Masterclass 2025
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Anna Hughes @annalchughes.bsky.social · 21/02/2025
Peatland and peatland-adjacent researchers take note - my place is hiring a Lecturer in Physical Geography (Research & Teaching position, NOT fixed term). Apply by 27 March 2025. www.jobs.manchester.ac.uk/Job/JobDetai...
jobs.manchester.ac.uk
Lecturer in Physical Geography :Oxford Road
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Roger Creel @rogercreel.bsky.social · 18/02/2025
Thanks to @pnas.org Science Sessions and Paul Gabrielson for this podcast about our recent paper! @whoi.edu www.pnas.org/post/podcast...
pnas.org
Climate effects and shifting Arctic coastlines
Roger Creel describes how compounding forces could reshape a thawing Arctic coastline.
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Seth Campbell @alpinesciences.bsky.social · 17/02/2025
Please share this REAL impact! AK colleagues tell me 17 of 20 ppl were terminated from Mendenhall Glacier Visitors Center (MGVC) in AK. I’ve worked w/ this professional and wonderful group serving the public & they have a display in their museum about the Juneau Icefield Research Program (JIRP). 🧪
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UK Centre for Polar Observation and Modelling @cpom-uk.bsky.social · 17/02/2025
This Research Fellow post @northumbriauni.bsky.social is closing for applications this week! Deadline 19/2/25 Love Earth Observation research?🛰️ Don't miss out! Apply now 👇
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Helen Amanda Fricker @helen-amanda.bsky.social · 10/02/2025
Last week there was a Special Issue in @science.org on "The Polar World" It contained three reviews -- "Antarctica in 2025" (led by me), “Disappearing Landscapes” (Arctic, by Julienne Stroeve) and a 3rd on Antarctic biodiversity www.science.org/toc/science/... 1/14
science.org
Contents | Science 387, 6734
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Julia Andreasen @juliaandreasen.bsky.social · 03/02/2025
Has your science ever been twisted, misrepresented, or taken wildly out of context? My latest Eos article dives into how I navigated this whirlwind—and what it taught me. Check it out (published this morning)!
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Nick Golledge @nick-golledge.bsky.social · 29/01/2025
Out today in @nature.com we present ice core evidence that the Ronne Ice Shelf survived the last interglacial, despite a global #climate 1-2C warmer than pre-industrial. Previous work showed that the West #Antarctic Ice Sheet collapsed, so what's happening? www.nature.com/articles/s41...
nature.com
The Ronne Ice Shelf survived the last interglacial - Nature
Sea salt data from an ice core record show that Antarctica’s Ronne Ice Shelf survived the last interglacial, the last period of enhanced and sustained global warmth about 125,000 years ago.
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Mike MacFerrin @icesheetmike.myatproto.social · 07/01/2025
Looking for physical scientists 🧪⚒️ who do fieldwork, who've had bad experiences w/ "medical screening" or "physical qualifying (PQ)" exams & restrictions. Stereotypes used against you, disqualified w/o consultation, etc. We're putting together a book. A new vision how PQ should work. DMs open. 📖
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Tim Lane @glaciologytim.bsky.social · 13/01/2025
Nice paper out resulting from our joint @ljmuofficial.bsky.social and @scsu.bsky.social fieldtrip to Iceland. We explored the benefits of a joint fieldtrip, the issues, and advice if you want to make one happen! www.tandfonline.com/doi/full/10....
tandfonline.com
Divided by a common language? The impact of a joint international field trip on student skills
Fieldwork is often cited as one of the most important and effective parts of geography education, despite increasing scrutiny over its environmental and financial cost. As a result, it is imperativ...
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Alex Robel @iceclimate.bsky.social · 08/01/2025
Our new paper is out! Led by Jason Amundson, it describes GLACIOME1D: a continuum 1D model for ice mélange based on nonlocal granular rheology that can be run over centuries doi.org/10.5194/tc-1...
doi.org
A quasi-one-dimensional ice mélange flow model based on continuum descriptions of granular materials
Abstract. Field and remote sensing studies suggest that ice mélange influences glacier–fjord systems by exerting stresses on glacier termini and releasing large amounts of freshwater into fjords. The ...
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Henry Patton @rhewlif.xyz · 08/01/2025
A newly revised bathymetry dataset for #Antarctica reveals previously unknown troughs and a greater vulnerability of the Antarctic grounding line to warm waters. "The new product will allow for improvements in future in the modeling of ice-ocean interactions in Antarctica" doi.org/10.1038/s415...
doi.org
Bathymetry of the Antarctic continental shelf and ice shelf cavities from circumpolar gravity anomalies and other data - Scientific Reports
Scientific Reports - Bathymetry of the Antarctic continental shelf and ice shelf cavities from circumpolar gravity anomalies and other data
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Keir Nichols @cosmokeir.bsky.social · 08/01/2025
Chuffed to have contributed to this new QSR paper led by @geologicaljo.bsky.social! Check it out of you fancy learning about glacial deposits in the Hudson Mountains, West Antarctica, and what they tell us about past ice thicknesses, thermal regimes, and ice flow directions 🧊🇦🇶🏔️ tinyurl.com/yh9je8sf
Two maps - the first shows the Amundsen Sea Embayment, West Antarctica, and major glaciers that flow into it (most notably Pine Island and Thwaites glaciers). The second map shows the Hudson Mountains, a series of volcanoes adjacent to Pine Island Glacier and dissected by Larter and Lucchita glaciers.Three plots showing the surface profile (elevation) of Pine Island, Larter, and a Lucchitta glaciers against distance from ice shelf front or grounding line (km). Grey boxes above the surface profiles show the extent of exposed rock at each nunatak (a volcano in each case here). Different symbols in/on the grey boxes show the location and elevation of erratic cobbles collected or observed at each nunatak. There is a pie chart above each nunatak showing the different erratic lithologies observed.
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Holly Wytiahlowsky @hollywytia.bsky.social · 07/01/2025
Our new preprint (and the first of my PhD!) is now open for discussion in The Cryosphere ❄️. We produced the first large-scale inventory of supraglacial channels in an alpine environment and provide insight into meltwater pathways and channel distribution. doi.org/10.5194/egus...
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Rachel Lupien @loopdlupien.bsky.social · 02/01/2025
Godt nytår! I'm hiring an isotope-loving postdoc with applications due January 15th 🇩🇰
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Roger Creel @rogercreel.bsky.social · 30/12/2024
In a 🔥 new Nature Communications paper 🔥 led by me, Jacky Austermann, and @bobkopp.net, we show that global mean sea level was likely higher in the Holocene than at 1850. 🎁: rdcu.be/d5fHn 🧵
rdcu.be
Global mean sea level likely higher than present during the holocene
Nature Communications - Sea level data and models of solid Earth effects and ocean thermal expansion are used to show that global mean sea level and Antarctic ice volume were likely higher and...
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Christopher Darvill @chrisdarvill.bsky.social · 20/12/2024
Postdoc available: 𝗠𝗼𝗱𝗲𝗹𝗹𝗶𝗻𝗴 𝘁𝗵𝗲 𝗹𝗮𝘀𝘁 𝗱𝗲𝗴𝗹𝗮𝗰𝗶𝗮𝘁𝗶𝗼𝗻 𝗼𝗳 𝘁𝗵𝗲 𝗖𝗼𝗿𝗱𝗶𝗹𝗹𝗲𝗿𝗮𝗻 𝗜𝗰𝗲 𝗦𝗵𝗲𝗲𝘁. Work on an NSF-NERC-funded project with brilliant UK, USA and Canada team. A great opportunity to combine modelling and field-based ice sheet reconstructions! Deadline: 𝟮𝟯 𝗝𝗮𝗻𝘂𝗮𝗿𝘆 𝟮𝟬𝟮𝟱 jobs.leeds.ac.uk/Vacancy.aspx...
jobs.leeds.ac.uk
Job Opportunity at University of Leeds: Research Fellow in Modelling Quaternary Ice-sheet Evolution
Salary: Grade 7 (£39,105 – £46,485 p.a. depending on experience) This role will be based on the university campus, with scope for it to be undertaken in a hybrid manner. We are also open to discussing...
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Keir Nichols @cosmokeir.bsky.social · 19/12/2024
🚨New paper just in time for the holidays 🚨 We combine exposure ages, glacial geomorphology, and sea level data to show that this pile of rocks near Thwaites Glacier is a moraine that formed in the Late Holocene (~1.4 ka) when a glacier thickened/advanced tinyurl.com/4sanafnb 🧵
A photo taken from a plane that shows a mountain (Mount Murphy, West Antarctica), moraine, and outcrops of a scoria cone, all of which are surrounded by ice and snow. A small glacier that flows from the flanks of Mount Murphy toward the moraine and scoria cone is highlighted in purple. Arrows show our interpreted ice flow directions.
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Roger Creel @rogercreel.bsky.social · 17/12/2024
🔥New paper alert! 🔥 Jacky Austermann and I show that simultaneous Antarctic collapse + Laurentide persistence during the Last Interglacial (130,000 - 115,000 years ago) could explain the local sea level oscillation observed in the Bahamas, Seychelles, Australia, and elsewhere. tinyurl.com/yjj7w2mr 🧵
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Caroline Clason @carolineclason.bsky.social · 04/12/2024
Join us at @geogdurham.bsky.social on 20th February for the the @geolsoc.bsky.social "Climate and Ecology: Off the Rails" series. I'll be speaking about the importance of glaciers for resource security, followed by a Q&A discussion with Rachel Oien @geogeordie.bsky.social & @mikebentley.bsky.social.
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Seth Campbell @alpinesciences.bsky.social · 30/11/2024
I’ve spent LOTs of time in crevasses, ice caves, & tunnels over the years. I’m fascinated by how they are formed. In the case of this video, water is the cause. This is a major water conduit under a glacier in Alaska. In this video, you can see the interface between deformable bed and the ice above.
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