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Stephan Rasp

Building the next generation of weather models

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    WeatherBench 2: A benchmark for the next generation of data-driven global weather models
    Alex Merose
    Peter Battaglia
    Tyler Russell
    Alvaro Sanchez
    Vivian Yang
    Matthew Chantry
    Zied Ben Bouallegue
    Peter Dueben
    Carla Bromberg
    Jared Sisk
    Luke Barrington
    Aaron Bell
    arXiv (2023) (to appear)
    Preview abstract WeatherBench 2 is an update to the global, medium-range (1-14 day) weather forecasting benchmark proposed by Rasp et al. (2020), designed with the aim to accelerate progress in data-driven weather modeling. WeatherBench 2 consists of an open-source evaluation framework, publicly available training, ground truth and baseline data as well as a continuously updated website with the latest metrics and state-of-the-art models: https://sites.research.google/weatherbench. This paper describes the design principles of the evaluation framework and presents results for current state-of-the-art physical and data-driven weather models. The metrics are based on established practices for evaluating weather forecasts at leading operational weather centers. We define a set of headline scores to provide an overview of model performance. In addition, we also discuss caveats in the current evaluation setup and challenges for the future of data-driven weather forecasting. View details
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