Björn Lütjens
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bjornlutjens.bsky.social
Björn Lütjens
@bjornlutjens.bsky.social
68 followers 64 following 5 posts
Research Scientist@IBM (he/him). Previously MIT. Research in machine learning and Earth system modeling 🌎

https://blutjens.github.io/
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bjornlutjens.bsky.social
MIT News writes today about our new paper: A simple linear model can outperform a large-scale AI foundation model in climate emulation. We offer an explanation with lessons on benchmarking, bias-variance tradeoff, and natural climate variability.

news.mit.edu/2025/simpler...
A table with NRMSE scores showing that Linear Regression has a better score than the Foundation Model, Vision Transformer, Random Forest, CNN-LSTM, and Gaussian Process.
August 26, 2025 at 3:39 PM
bjornlutjens.bsky.social
AGU abstracts due today, 07/30, 23.59 EDT. We're organizing the session on Advances in Emulating Earth System Models with speakers Mike Pritchard (NVIDIA), Sarah Schöngart (Climate Analytics), and Noelle Selin (MIT).

Submission link:
agu.confex.com/agu/agu25/pr...
Advances in Emulating Earth System Models
Running Earth system models (ESMs) requires a heavy computational cost. As a result, ESMs are often only run for a few emission scenarios with a limited number of realizations per scenario. Emulators ...
agu.confex.com
July 30, 2025 at 12:42 PM
bjornlutjens.bsky.social
We just released the first lecture from this year's workshop on Computer Vision for Ecology at Caltech with MIT Prof Sara Beery giving an Intro to Computer Vision - Deep Learning, CNNs, and Transformers. Pls lmk if you have any comments:) youtu.be/5rE2ogBh0zc?...
Caltech CV4E - Intro to Computer Vision - Deep Learning, CNNs, Transformers - Prof. Sara Beery
YouTube video by CV4Ecology
youtu.be
March 20, 2025 at 3:59 PM