Datasets

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

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

The charts show mean frequency and accumulated cyclone energy of tropical storm activity. ...

This chart provides information on the verification of forecasts of the expected number of ...

The charts show the evolution of existing and potential tropical cyclone activity. ...

These charts aim to point towards areas where anomalous weather is likely to occur. ...

This chart shows 7-day mean anomalies for a range of parameters from the ECMWF Sub-seasonal ...

These diagrams show verification scores for significant wave height and 10 m wind for three ...

These charts show surface pressure patterns. Areas of high pressure (anticyclones) are usually associated with settled weather...

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...

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

The charts show the forecast value of the vertically integrated total column water (vapour + cloud water + cloud ice but with no precipitation included) in units of kg m⁻²...

Forecast precipitation is considered to be snow if the model atmosphere above and at the ground surface is forecast to be below 0°C. Where the ground surface lies near the 0°C level...

The air flow is not the same at all levels and can be very different in strength and direction when associated with vigorous weather systems...

These charts show the difference between the latest HRES Long Window Data Analysis (LWDA) for the main synoptic hours of 00, 06, 12 and 18UTC, and its corresponding background field taken from the previous HRES LWDA run with the same validity time...

Bulk Wind Shear charts show the scalar value of the shear between the winds at the two pressure levels selected. Shear can be useful in assessing the strength of a front or...

This dataset provides daily air quality analyses and forecasts for Europe.

CAMS produces global forecasts for atmospheric composition twice a day. The forecasts consist of more than 50 chemical species (e.g. ozone, nitrogen dioxide, carbon monoxide) and seven different types of aerosol (desert dust, sea salt, organic matter, black carbon, sulphate, nitrate and ammonium aerosol). In addition, several meteorological variables are available as well.

Emissions of atmospheric pollutants from biomass burning and vegetation fires are key drivers of the evolution of atmospheric composition, with a high degree of spatial and temporal variability, and an accurate representation of them in models is essential.

This dataset provides aerosol optical depths and aerosol-radiation radiative effects for four different aerosol origins: anthropogenic, mineral dust, marine, and land-based fine-mode natural aerosol. The latter mostly consists of biogenic aerosols.

These charts show areas where anomalous 10 m wind gusts are likely to occur. These charts are based on the ECMWF ensemble fore ...

These charts show areas where anomalous 10 m wind speeds are likely to occur. These charts are based on the ECMWF ensemble for ...

Spread usually, but not always, increases with forecast range. Spread refers to the uncertainty of the values of a parameter but it does not necessarily refer to the flow patterns...

The ensemble mean is the mean value derived from all the 50 ensemble members plus the control member. This value attempts to capture the general picture while smoothing out spurious detail...

These charts show the mean and variation in the latest ECMWF ensemble forecast (ENS). ...