Chris Roberts

@cdroberts.bsky.social

Senior scientist @ECMWF working on sub-seasonal (s2s) prediction.

Just received reviews from a rerevised paper I reresubmitted. Only 1 of 3 reviewers returned comments, which seem to be for ORIGINAL manuscript rather than revision 2, which included major changes to address reviewer concerns. I checked the online system and the correct version was resubmitted.

We have taken the ensemble version of the Artificial Intelligence Forecasting System (#AIFS) into operations! It will run side by side with the traditional physics-based Integrated Forecasting System (IFS). Find out more here ➡️ www.ecmwf.int/en/about/med...

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Last Tuesday, I was set to give a talk on 'climate change in the Northeast' at a retirement home but had to cancel due to hourly job threats. After nearly two weeks of overwhelming uncertainty, today it happened. I was fired from my dream of working at NOAA. I'm so sorry to everyone also affected.

And here is an example 10 day forecast of 850 hPa Zonal Wind from AIFS-CRPS provided by Simon Lang. This animation illustrates that probabilistic CRPS-based training does not suffer from smoothing and/or reduced variance for longer rollouts that is inherent to deterministic MSE-based training.

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Chris Roberts@cdroberts.bsky.social · 2y ago

🚨New preprint🚨from @ecmwf.bsky.social introducing AIFS-CRPS, a new data-driven ensemble system for medium-range and subseasonal forecasting. arxiv.org/abs/2412.15832

Join us at #EGU25 to hear and discuss the latest advances in subseasonal-to-seasonal #S2S prediction and applications. Please submit your abstracts to AS1.7 meetingorganizer.copernicus.org/EGU25/sessio... by 15 January 2025 13:00 CET.

Session AS1.7

meetingorganizer.copernicus.org

Chris Roberts@cdroberts.bsky.social · 2y ago

The #EGU25 call for abstracts is open! Join our session AS1.7 to discuss recent advances in #S2S prediction, including process understanding and applications. We look forward to your contribution!

EGU 2025 S2S session.

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