All the models simulate rain (so does ERA5) but whereas they all agree on snowfall, rain is not such a clear picture. Hi-res really helps here, and it's all we've got to go on because there are no observations of rainfall in this region - this really should change! 4/8 - ThreadSky

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drgilbz.bsky.social • 20 days ago

All the models simulate rain (so does ERA5) but whereas they all agree on snowfall, rain is not such a clear picture.

Hi-res really helps here, and it's all we've got to go on because there are no observations of rainfall in this region - this really should change!

4/8

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drgilbz.bsky.social•20 days ago

🗻The effects of atmospheric rivers in West Antarctica are strongly controlled by the steep terrain.

The slopes also drive warming near the surface, and ramp up the production of snow via a phenomenon called the seeder-feeder effect.

Fig from https://wasatchweatherweenies.blogspot.com/2020/04/the-seeder-feeder-effect.html

5/8

drgilbz.bsky.social•20 days ago

I've made a video summarising the results (of course)

Watch here: ▶️ https://youtu.be/0-zLGu2t_e0

6/8

drgilbz.bsky.social•20 days ago

And you can also check out my @carbonbrief.org guest post here:

https://www.carbonbrief.org/guest-post-how-atmospheric-rivers-are-bringing-rain-to-west-antarctica

7/8

drgilbz.bsky.social•20 days ago

The full paper is out today on the Cryosphere website, check it out here:

https://tc.copernicus.org/articles/19/597/2025/

HUGE thanks to my co-authors (the only one on Bsky is @michelle-maclennan.bsky.social ) and to @polarres.bsky.social for funding the work.

8/8

drgilbz.bsky.social•20 days ago

Also paging @bas.ac.uk 😘

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