New paper published in PNAS today! Joint work with Jeffrey Shrader, Stephan Thies, Derek Lemoine, and Laura Bakkensen: www.pnas.org/doi/10.1073/...

IN THE DANCE 😤

Woo!!

Abstract: The case is made that machine-learning statistical estimation neither can nor should be expected to supplant physics-based simulation for weather forecasting. journals.ametsoc.org/view/journal...

Stephen Lewis has gone to the angels. He was a relentless fighter for justice. When I was 9 my Granny (an immigrant mining widow) made me sit in front of the TV and listen to him speak about compensation for mining victims. His passion and commitment stayed with me. substack.com/home/post/p-...

The production of ERA6, coming up in 2027, has started. The next‑generation climate reanalysis from #CopernicusClimate will offer >2× finer resolution than ERA5, a coupled ocean–atmosphere–wave model, improved data access & more. Read more: climate.copernicus.eu/copernicus-c... @ecmwf.int

There is no excuse to be posting on twitter. None.

WHAT A CAREER Brad Gushue has just played his last game at the Brier. A remarkable career. Six Brier titles. World title. Olympic gold and bronze. 15 Slam titles. It’s been an honour to cover so many of those moments. Congratulations @BradGushue.

Wonderful news: my university has announced it will stop using X. uwimprint.ca/uw-announced... And no, this does not violate institutional neutrality, properly understood. Nothing about neutrality in communications requires a university to use any and all platforms.

So, so instructive to compare media response to Afghanistan withdrawal -- months of hysterical garment-rending & catastrophizing, relentless criticism of the admin -- with the response to an unprovoked, unmotivated, illegal war of aggression, ie, "some critics say maybe Trump should have reasons."

3 on 3 to decide a gold medal game is garbage

The Wall Street Journal is reporting that ChatGPT conversations from the Tumbler Ridge teenager who carried out a horrific school shooting were flagged by employees at OpenAI. They raised their concerns but the company ultimately did nothing, according to the reporting. archive.is/GUweE#select...

A new paper shows that less than 2 months of exposure to Twitter’s algorithmic feed significantly shifts people’s political views to the right. Moving from chronological feed to the algorithmic feed also increases engagement. This is one of the most concerning papers I’ve read in awhile.

As a Sens fan I do enjoy this.

GOOOOOOAAAAALLLLLL CANADA 🇨🇦 WINS IT IN OVERTIME MOVING ON AT THE OLYMPICS EXHALE CANADA

Peak athleticism! 🐶 A dog got loose on the cross-country ski course. #MilanoCortina2026

Why do otherwise rational people disagree about the same evidence? Our new paper finds that group membership is a deeply rooted influence on how we form beliefs, leading even preschoolers to bias their evidential standards and form inaccurate beliefs. www.nature.com/articles/s41...

Can we assume the elimination of the diploma in Newfoundland and Labrador studies is the elimination of the only such program in the world? www.cbc.ca/news/canada/...

Updated climate indicators graphics, now including 2025 ed-hawkins.github.io/climate-visu...

1/ If I understand yesterday's Ontario budget announcement correctly, here's what provincial transfers to institutions will look like for the coming few years. Scale is millions of $2025.

Crosby to McDavid to MacKinnon. Come on, man. That shit's unfair. 4-0 Canada.

Our pup is certainly enjoying all the snow and ice this year along Lake Ontario

Beautiful design by Tsmishian (Alaska Native) artist to support those in MN via the ACLU NARF fund www.customink.com/fundraising/...

Despite perfect flying weather this evening, we are stuck in Halifax for the next 2 days because Air Canada cancelled our flight to Goose Bay because of 'weather' (i.e. no compensation). The real reason we are cancelled is cause they didn't want a plane 'stuck' in Labrador tomorrow.

Physical activity and the reduction of all-cause mortality, from 2 very large prospective cohorts 1. The relationship is non-linear, suggesting a threshold effect for many types of exercise as seen below

LAST CALL: We have graduate positions in cryosphere science open for applications in our lab (www.labradorgeolab.ca). Feel free to reach out if they are of interest!

Back in 2008, the EIA believed that natural gas production would be flat through 2030. Then came fracking.

At ArcticNet's ASM 2025 in December I presented on some really troubling developments in Canada's premier weather and climate observing network. I'll share a couple highlights (or lowlights depending on your perspective) in this thread. /1

Big day! CBC News will add 33 local journalists and create 11 new bureaus this year, adding to last year's expansion of 30 journalists in 22 communities across Canada. Many of the new positions are based in Central and Western Canada. My editor's blog: www.cbc.ca/news/editors...

Globally, no single day in 2025 was cooler than its 1991-2020 average. climate.copernicus.eu/global-clima...

Important to see provinces investing more in weather stations. But ultimately this is an example of the Federal Government abdicating its responsibilities for weather monitoring and seeing this downloaded to the provinces without financial support. www.cbc.ca/news/canada/...

Colleagues @frosty-feng.bsky.social & Emma Street have led this really interesting chapter on the Impacts of permafrost thaw on Indigenous livelihoods. Reach out via ResearchGate or contact the author team if you'd like to read it but can't get access. www.sciencedirect.com/science/chap...

News got you down? How about this little pick-me-up from my friend Brian Menounos at @unbcgeographyensc.bsky.social "What we're finding is that these glaciers are disappearing much faster than previously projected." 🧪⚒️ www.cbc.ca/news/canada/...

Published today: Importance of beginning industrial-era climate simulations in the eighteenth century Defining pre-industrial to be 1750, rather than 1850, produces different (simulated) historical climate changes after 1850. Pre-1850 volcanoes & land use matter. iopscience.iop.org/article/10.1...

Queen's University is recruiting through the Canada Impact+ Research Chairs program. Geography and Planning is a particularly great option for international scholars seeking to do northern or climate change research. Feel free to reach out if interested. www.queensu.ca/vpr/recruitm...

If you are interested in studying participatory cryosphere science or permafrost science feel free to reach out about these opportunities. Will be recirculating in early January. Also for international scholars there's funding opportunities for PhDs/postdocs where these projects could apply as well!

The world as 100 people over the last two centuries

RealClimate: 1.5ºC and all that www.realclimate.org/index.php/ar...

If you are interested in studying participatory cryosphere science or permafrost science feel free to reach out about these opportunities. Will be recirculating in early January. Also for international scholars there's funding opportunities for PhDs/postdocs where these projects could apply as well!

If you are interested in studying participatory cryosphere science or permafrost science feel free to reach out about these opportunities. Will be recirculating in early January. Also for international scholars there's a new funding opportunity for postdocs where these projects could apply as well!

Giving a talk shortly at ArcticNet ASM 2025 in Calgary on Canada's climate observing network. It isn't a pretty story.

On FB, Yukon Geological Survey posted some spectacular photos of landslides & snow avalanches triggered by the magnitude 7.0 earthquake on Dec 6 in the St Elias Mountains. Here are some of my favs. @geocron.bsky.social @theronfinley.bsky.social @davepetley.bsky.social @ksvenenvig.bsky.social 🧪⚒️

An interesting piece and discussion. The only thing I'd add is the radiative imbalance has been unusually large. Many of these factors contribute to it but it's not the whole story.

There must be some non-Euclidean geometric term that may be applied to this

#CopernicusClimate has released its first data from the Copernicus pan-Arctic Regional Reanalysis (CARRA2): 2.5 km pan‑Arctic coverage, 24 years of data in the Climate Data Store, more realistic physics & improved details for local extremes, lots of added details with respect to ERA5. ⬇️

Imagine if there was a program like this for Indigenous Scholars from Canada....

The recent massive cuts to climate change adaptation and hazard expertise at the Federal Gov of Canada are just going to end up costing Canadians millions (billions?) of dollars eventually. We've seen this story before. www.nationalobserver.com/2025/12/05/n...

Interesting thread. A reminder that models do not have updated forcing data to account for changes to aerosols (reductions) over the last number of years. Without that updated data it is tougher to assess short-term (recent) differences in trends.

Christ on a cracker — these seemingly hostile drones only missed Zelensky’s plane because he was unexpectedly early www.thejournal.ie/drones-dubli...

Colleen Jones was larger than life. I’m devastated by her death. And will be forever inspired by how she lived. And fought. And loved. More than anything I’ll miss our laughs and lattes. And am so grateful for every second we had together. I love you, Coll.