Datasets

Atmospheric Model Ensemble 15-day forecast (ENS), III-v-c: Shift of Tails (SOT) 1-day ranges

The products provide the shift-of-tails of single level parameters of instantaneous, averaged and accumulated values at each grid point. The products are encoded in GRIB form. For more information on the Extreme Forecast Index, please consult the ECMWF Forecast User Guide: https://confluence.ecmwf.int/display/FUG/Extreme+Forecast+Index+-+EFI%2…

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Atmospheric Model Ensemble 15-day forecast (ENS), III-v-d: Shift of Tails (SOT) 3, 5 and 10-day ranges

The products provide the extreme forecast index of single level parameters of instantaneous, averaged and accumulated values at each grid point. The products are encoded in GRIB form. For more information on the Extreme Forecast Index, please consult the ECMWF Forecast User Guide: https://confluence.ecmwf.int/display/FUG/Extreme+Forecast+Index+-+EFI%2…

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Atmospheric Model Ensemble 15-day forecast (ENS), III-vi-a: Ensemble means - Single level

The ENS provides the ensemble mean (or the ensemble median) forecast which tends to average out the less predictable atmospheric scales.

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Atmospheric Model Ensemble 15-day forecast (ENS), III-vi-b: Ensemble means - Pressure levels

The ENS provides the ensemble mean (or the ensemble median) forecast which tends to average out the less predictable atmospheric scales.

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Atmospheric Model Ensemble 15-day forecast (ENS), III-vii-a: Ensemble standard deviations - Single level

The spread of the ENS forecast, measured by the standard deviation (Std) of ENS values at a given point and lead time, is normalised against the mean of the spread of the 30 most recent 00UTC ENS (Mstd) for 00UTC runs (or 12UTC ENS (Mstd) for 30 most recent 12UTC ENS runs) for the same lead-times and geographical locations.

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Atmospheric Model Ensemble 15-day forecast (ENS), III-vii-b: Ensemble standard deviations - Pressure levels

The spread of the ENS forecast, measured by the standard deviation (Std) of ENS values at a given point and lead time, is normalised against the mean of the spread of the 30 most recent 00UTC ENS (Mstd) for 00UTC runs (or 12UTC ENS (Mstd) for 30 most recent 12UTC ENS runs) for the same lead-times and geographical locations.

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Atmospheric Model Ensemble 15-day forecast (ENS), III-viii: Tropical Cyclone tracks

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Atmospheric Model Sub-seasonal forecast, VI-i-a: Weekly means of ensemble means - Single level

The following fields are weekly means computed from data of the daily individual forecast runs (section VI-v) and averaged over all ensemble members. The fields are provided in GRIB code.

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Atmospheric Model Sub-seasonal forecast, VI-i-b: Weekly means of ensemble means - Pressure levels

The following fields are weekly means computed from data of the daily individual forecast runs (section VI-v) and averaged over all ensemble members. The fields are provided in GRIB code.

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Atmospheric Model Sub-seasonal forecast, VI-ii-a: Weekly mean anomalies of ensemble means - Single level

The following products correspond to the products in section VI-i with the model climate mean subtracted. The model climate is derived from hindcast statistics. The fields are provided in GRIB code.

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Atmospheric Model Sub-seasonal forecast, VI-ii-b: Weekly mean anomalies of ensemble means - Pressure levels

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Atmospheric Model Sub-seasonal forecast, VI-iii-a: Weekly means of individual ensemble members - Single level

The following fields are weekly means computed from data of the daily individual forecast runs (section VI-v) for the individual ensemble members. The fields are provided in GRIB code.

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Atmospheric Model Sub-seasonal forecast, VI-iii-b: Weekly means of individual ensemble members - Pressure levels

The following fields are weekly means computed from data of the daily individual forecast runs (section VI-v) for the individual ensemble members. The fields are provided in GRIB code.

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Atmospheric Model Sub-seasonal forecast, VI-iv-a: Weekly mean anomalies of individual ensemble members - Single level

The following products correspond to the products in section VI-iii with the model climate mean subtracted. The model climate is derived from hindcast statistics. The fields are provided in GRIB code.

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Atmospheric Model Sub-seasonal forecast, VI-iv-b: Weekly mean anomalies of individual ensemble members - Pressure levels

The following products correspond to the products in section VI-iii with the model climate mean subtracted. The model climate is derived from hindcast statistics. The fields are provided in GRIB code.

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Atmospheric Model Sub-seasonal forecast, VI-v-a: Individual forecast runs - 6-hourly - Single level

The products contain values for each ensemble member of the Monthly Prediction System plus the equivalent hindcast products. The fields are provided in GRIB code.

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Atmospheric Model Sub-seasonal forecast, VI-v-b: Individual forecast runs - 12-hourly - Pressure levels

The products contain values for each ensemble member of the Monthly Prediction System plus the equivalent hindcast products. The fields are provided in GRIB code.

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Atmospheric Model Sub-seasonal forecast, VI-v-c: Individual forecast runs - 6-hourly - wave

The products contain values for each ensemble member of the Monthly Prediction System plus the equivalent hindcast products. The fields are provided in GRIB code.

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Atmospheric Model Sub-seasonal forecast, VI-v-d: Individual forecast runs - 12-hourly - potential vorticity levels

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Atmospheric Model Sub-seasonal forecast, VI-vi-a: Probabilities - Weekly averaged

The fields provide the probabilities of the occurrence of weather events at each grid point. Weather events are either averaged or accumulated over a period of one week. The products are provided in GRIB code.

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