2025-10-09 All-Hands Presentation Meeting Notes
QuadTune: A poor man’s tuner for expensive global models
Vince Larson
University of Wisconsin Milwaukee
Abstract: A useful method to explore parameter sensitivities of global physics models is perturbed parameter experiments (PPEs). However, PPEs require a hundred or more global simulations, and many interesting global models — such as global convection-permitting models and coupled ocean-atmosphere models — are expensive. Hence reducing the cost of tuning is desirable.
To reduce the number of global simulations needed, we are developing a ``poor man’s” tuner, based on a simple quadratic emulator. The simple quadratic form requires us to run only 2P+1 global simulations, and it also aids interpretability, which in turn allows us to create diagnostic plots that elucidate model structural errors.
Date Oct 9, 2025
Time
PT: 8:30 am
ET: 11:30 am
Call Info
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Time | Title | Presenter | Presentation | Recording | Notes |
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30 min | QuadTune: A regional tuner for global atmospheric models | Vince Larson | 
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