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README.md
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Here, we introduce the **Artificial Intelligence Forecasting System (AIFS)**, a data driven forecast
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model developed by the European Centre for Medium-Range Weather Forecasts (ECMWF).
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We show that AIFS produces highly skilled forecasts for upper-air variables, surface weather parameters and
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tropical cyclone tracks. AIFS is run four times daily alongside ECMWF’s physics-based NWP model and forecasts
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are available to the public under ECMWF’s open data policy.
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AIFS is based on a graph neural network (GNN) encoder and decoder, and a sliding window transformer processor,
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and is trained on ECMWF’s ERA5 re-analysis and ECMWF’s operational numerical weather prediction (NWP) analyses.
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It has a flexible and modular design and supports several levels of parallelism to enable training on
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high resolution input data. AIFS forecast skill is assessed by comparing its forecasts to NWP analyses
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and direct observational data.
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Here, we introduce the **Artificial Intelligence Forecasting System (AIFS)**, a data driven forecast
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model developed by the European Centre for Medium-Range Weather Forecasts (ECMWF).
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We show that AIFS produces highly skilled forecasts for upper-air variables, surface weather parameters and
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tropical cyclone tracks. AIFS is run four times daily alongside ECMWF’s physics-based NWP model and forecasts
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are available to the public under ECMWF’s open data policy.
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AIFS is based on a graph neural network (GNN) encoder and decoder, and a sliding window transformer processor,
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and is trained on ECMWF’s ERA5 re-analysis and ECMWF’s operational numerical weather prediction (NWP) analyses.
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<div style="display: flex;">
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<img src="encoder_graph.jpeg" alt="Encoder graph" style="width: 50%;"/>
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<img src="decoder_graph.jpeg" alt="Decoder graph" style="width: 50%;"/>
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</div>
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It has a flexible and modular design and supports several levels of parallelism to enable training on
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high resolution input data. AIFS forecast skill is assessed by comparing its forecasts to NWP analyses
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and direct observational data.
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