colin r meyer

🔬Verifying GPR data with ice cores and refractometers

📹Here is the final instalment of our 5 part series from @alibanwell.bsky.social @cires.colorado.edu in #Antarctica

👏Thank you Ali Banwell, Ryan Cassotto, Michela Savignano and Allie Berry for sharing this incredible work with CPOM!

Sediment Transport by Greenland Icebergs (ice-rafted debris) contribute about 1/3 of the Greenland's total sediment output. See research by Ethan Pierce, Dartmouth and Irina Overeem, CU, Boulder published in Nature Communications: www.nature.com/articles/s41...

www.colorado.edu/instaar/2026...

YouTube video by The Daily Show Lonnie Thompson - “Canary” & Letting Glaciers Tell Their Story | The Daily Show

Check out this great interview with ice-coring legend Lonnie Thompson on @thedailyshow.com. youtu.be/oQoXNtcfwvA

🧪🌊❄️🥼

Influence of water extraction on subglacial hydrology and glacier velocity Abstract. Subglacial water modulates glacier velocity across a wide range of space and time scales by influencing friction at the glacier bed. Observations show ice acceleration due to supraglacial la...

Interesting new preprint from @colinrmeyer.bsky.social and colleagues -> “we perform transient model experiment…to determine the effects of water extraction on glacier velocity. With continuous pumping, we simulate a modest impact on velocity…”

egusphere.copernicus.org/preprints/20...

A great explainer on @dgrau13.bsky.social’s recent paper finding simple equations describing the size of melt lakes on ice sheets doi.org/10.1038/s414...

Glaciers in California’s Sierra Nevada are likely disappearing for the first time in the Holocene! 🧊😲

What a surprise! (nope) 🙃

Another evidence we are leaving the climate crucible that saw human societies develop! 🔥📈

www.science.org/doi/10.1126/...

The Greenland Ice Sheet Large Ensemble (GrISLENS): simulating the future of Greenland under climate variability Abstract. The Greenland ice sheet has lost ice at an increasing pace over recent decades, driven by a combination of human-caused climate change and internal variability in the climate system. In proj...

What humans do to change climate matters much, much more than natural climate variations in determining future ice loss from Greenland 👉 Read about the results of the Greenland Ice Sheet Large Ensemble (GrISLENS) Project in our paper out now in The Cryosphere doi.org/10.5194/tc-1...

New paper from GLACIOME project: laboratory experimental constraints on iceberg mélange rheology led by Kavinda Nissanka from @emoryuniversity.bsky.social doi.org/10.1029/2024...

A Python library for solving ice sheet modeling problems using physics-informed neural networks, PINNICLE v1.0 Abstract. Predicting the future contributions of the ice sheets to sea-level rise remains a significant challenge due to our limited understanding of key physical processes (e.g., basal friction, ice ...

Cool new library for physics-informed neural networks for glaciology problems, led by Gong Cheng @dartmouthears.bsky.social gmd.copernicus.org/articles/18/...

natalya gomez Podcast Episode · snow & ice pod · 08/27/2025 · 58m

Roadtripping to the beach this weekend and listening to this great podcast with @natalyagomez.bsky.social on @colinrmeyer.bsky.social’s Snow and Ice pod 🧊🧊 podcasts.apple.com/us/podcast/s...

Predicting mean depth and area fraction of Antarctic supraglacial melt lakes with physics-based parameterizations - Nature Communications This study uses the physics of bumpy surfaces to derive simple equations that predict the size of lakes that form from melt on the surface of ice sheets, finding that there are fundamental limits on t...

Thrilled for this paper @natcomms.nature.com led by @dgrau13.bsky.social‬, PhD Candidate @gtsciences.bsky.social, putting forward the first physics-based parameterizations for the area and depth of supraglacial lakes 🧵👇 www.nature.com/articles/s41...

YouTube video by London Mathematical Society Toy models, Tadashi Tokieda | LMS Popular Lectures 2008

When the world gets you down, let the joyful wisdom of Tadashi Tokieda brighten your day.

youtu.be/pkfDYOZ1p4Y?...

My first thing, pretty much, pretty pleased with it eartharxiv.org/repository/v...

Subglacial water amplifies Antarctic contributions to sea-level rise - Nature Communications Hidden water beneath Antarctica’s ice can accelerate ice loss, potentially raising sea levels by over 2 meters by 2300. These findings highlight the urgent need to incorporate evolving subglacial hydr...

📣 Our new paper is out in Nature Communications!
Subglacial water—often overlooked—can change sea-level rise projections by up to a factor of three. Big implications for how we model Antarctica.
🔗 www.nature.com/articles/s41...

A beautiful branching snowflake on a blue background. A natural snow crystal observed in the central area Hokkaido, Japan. Copyright: Y. Furukawa, Hokkaido University, Japan.

We have an opening for a postdoctoral researcher to join us at Dartmouth College. The focus of the project is on snow sintering. Together we will develop new models for snow evolution on the surface of glaciers. Please feel free to reach out if you have any questions.

Inside a new quest to save the “doomsday glacier” Arête Glacier Initiative has raised $5 million to improve sea-level rise forecasts and explore the possibility of refreezing glaciers in place.

Here's more from @jtemple.bsky.social on what the stakes of a Thwaites glacier collapse are and why this initiative is so important

Impacts of global warming on (A) marine ecosystem functioning and fisheries, (B) large marine mammals, (C) local transportation, and (D) infrastructure. Colors indicate risk level as a function of global warming: white, undetectable; yellow, moderate; red, high; purple, very high. Black bar indicates 2.7°C. Confidence in assessment of risk transitions by warming levels is indicated by the number of dots shown, from three (high) to one (low). No dots indicate confidence could not be assessed or a risk transition threshold was not met.

A new #ScienceReview provides a preview of what the Arctic region may look like in a warmer world. https://scim.ag/41rrYuF

The Glacier Mass Balance Intercomparison Exercise is out! Herculean effort bringing together >200 estimates of glacier loss outside the ice sheets. Bottom line is 273 gigatonnes per year of ice loss since the year 2000! 😲

Open-access article: doi.org/10.1038/s415...

🥼❄️ @natureportfolio.nature.com

A wire stuck in ice

For Valentine’s Day 💙💙 we honored my favorite glaciological love story, Julia and Hans Weertman, by regelating some ice in class while deriving the regelation velocity from first principles

Come work with us at Arête Glacier Initiative! 👇

We are seeking a full-time Executive Director (equivalent to CEO) to help lead and grow Arête, a mission-driven non-profit cofounded by Colin Meyer @colinrmeyer.bsky.social and me.

drive.google.com/file/d/12svQ...

(PDF) Experimental constraints on transient glacier slip with ice-bed separation PDF | Fast glacier motion is facilitated by slip at the ice-bed interface. For slip over rigid beds, areas of ice-bed separation (cavities) can exert... | Find, read and cite all the research you need...

Accepted in Journal of Glaciology! Work co-led with @subglacial.bsky.social testing glacier slip theory in the lab. We characterize new slip behaviors on short forcing timescales, while also finding theoretical models are reasonable over longer periods.

www.researchgate.net/publication/...

❄️ Check out this fabulous new paper by Sarah Wells-Moran seeking to constrain the stresses at which ice fractures - it's a fun read by a particularly awesome scientist! 🧊 www.cambridge.org/core/journal...

Introducing the Cryosphere Publication feed!
🥼❄️ ⚒️

A feed that brings you cryosphere publications.
Posts will appear if they...
- include cryosphere keywords accompanied by a doi, arxiv, or pubmed link
- links from (some) cryosphere-related journals

bsky.app/profile/did:...

How the odds for a white Christmas changed in the most recent climatological period (1991-2020) relative to 1951-1980. Red colors indicate a decreasing chance (in percentage points), with darker shading indicating a larger decrease. Blue colors mean an increased chance, relative to the earlier period.

One month until Christmas Eve 🎄🎅🏼

❄️ The chance for a white Christmas is decreasing across Europe.

📉 Here’s how the odds for a snowy Christmas Eve have changed in the latest climatological period (1991-2020) relative to 1951-1980.

🧵 (1/3)

@leighstearns.bsky.social shining bright at #AGU24 telling the fascinating story of changes at Greenland’s Helheim Glacier Greenland since the 1940s. Advance and thickening up to the 1980s followed by retreat and thinning, all in response to warming atmosphere and ocean and adding to sea level rise

Subglacial sediments migrate UP into temperate ice. From Ethan Pierce of @colorado.edu at #AGU24

Dynamics of ice stream temporal variability: Modes, scales, and hysteresis We find two modes of ice stream variability: steady-streaming and binge-purge There is hysteresis in ice stream variability Siple Coast ice streams are near an abrupt transition to steady-streaming

Nonlinear dynamics, ice streams, Heinrich events, ODEs all wrapped together in a bow by @iceclimate.bsky.social:

doi.org/10.1002/jgrf...

We spend a few months on the Juneau Icefield each summer conducting glacier, geophysics, Polar engineering, geoscience, & climate related research with the Juneau Icefield Research Program. We are open to other scientists joining our team so reach out if you are interested!

A screenshot saying: EarthArXiv We just hit 5000 pre/post prints in the archive! Many. thanks to everyone who worked on this effort by Bruce Caron Seven years and 5000 published submissions later... EarthArXiv is on a roll!

The EarthArxiv logo. It’s the word earth and arxiv, with an unlocked lock shape in the middle, on which is the globe and the concentric layers of the earth

WOOHOO! 🥳

We’re a little over 7 years old and #EarthArXiv has reached 5000 pre- and post-prints! Thanks to all of those who have supported us over the years 🤗

Check out EarthArxiv for yourself at: eartharxiv.org and learn more about us here: en.m.wikipedia.org/wiki/EarthAr...

E S 369N fall 2024 - YouTube Lectures from my class Engineering Studies 369N: Sustainability Issues in Energy, recorded fall semester 2024

Hey #energysky, I decided to record all the lectures in my Sustainability Issues in Energy class this fall. I am posting them to my YouTube channel every Friday. Follow along here: youtube.com/playlist?lis... 🔌💡