This chart shows the spatial variation in the Anomaly Correlation Coefficient (ACC) for the ...

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The reliability diagram shows the reliability of the ECMWF seasonal forecast system (SEAS5) with ...

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This chart shows the Relative Operating Characteristics (ROC) diagram for the three-month ...

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This chart shows the spatial variation in the Relative Operating Characteristics (ROC) skill ...

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The ECMWF seasonal forecasts (SEAS5) are produced every month with a 51-member ensemble at a ...

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The 850 hPa level is usually just above the boundary layer and at this level the day-night variation in temperature is generally negligible...

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This chart shows 7-day mean anomalies of 500hPa geopotential height from the ECMWF Sub-seasonal ...

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500-1000 hPa thickness is a measure of the mean temperature of a column of the atmosphere between these pressure levels and can be used to distinguish between warm and cold air masses and...

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Detailed information on these EXPERIMENTAL products can be found

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This diagram gives a measure of the effectiveness of the model in forecasting 500 hPa heights at ...

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**Note:** In **June 2023** ECMWF implemented a **major upgrade ...**

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The reliability diagram shows the reliability of the ECMWF seasonal forecast system (SEAS5) with ...

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This chart shows the Relative Operating Characteristics (ROC) diagram for the three-month ...

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open_in_newview in Open Charts

This chart shows the spatial variation in the Relative Operating Characteristics (ROC) skill ...

calendar_today Interval/period: N/A

open_in_newview in Open Charts

The ECMWF seasonal forecasts (SEAS5) are produced every month with a 51-member ensemble at a ...

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This chart shows the spatial variation in the Anomaly Correlation Coefficient (ACC) for the ...

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Wind speed at 200 hPa highlights the jet stream (areas of strong winds in the upper troposphere) which can help identify movement and development of depressions...

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Wind speeds near the surface are roughly proportional to the distance between isobars so closely packed isobars mean strong surface winds...

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This chart shows probabilities for the 7-day mean anomalies of mean sea level pressure (mslp) to ...

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This chart shows probabilities that the 7-day mean of mean sea level pressure (from the 101 ...

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This chart shows 7-day mean anomalies of mean sea level pressure (mslp) from the ECMWF ...

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These plots compare recent IFS and experimental AIFS verification scores for 500 hPa ...

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These plots compare recent IFS and experimental AIFS verification scores for 500 hPa ...

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Aurora: a deep learning-based system developed by Microsoft. It is initialised with ECMWF analysis. Aurora operates at 0.1° resolution.

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open_in_newview in Open Charts

Aurora: a deep learning-based system developed by Microsoft. It is initialised with ECMWF analysis. Aurora operates at 0.1° resolution.

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open_in_newview in Open Charts