Using ECMWF’s Forecasts (UEF2024)

This talk will give an overview of latest developments on ECMWF's graphical products and applications (Opencharts and ecCharts) as well as outlining the plan for upcoming changes and new products. The talk also aims to have a Q&A session at the end to discuss user's feedbacks and issues.

This presentation introduces a new simple diagnostic, called CURV (Curvature Using Radial Variation), that identifies cyclonic and anticyclonic regions using surface pressure or geopotential height, over a range of scales (typically 500-4000km). CURV has been developed as part of work to assess the benefit of combining forecasts from the medium-range and extended-range ensembles.

The method...

The generation of near-real-time simulated satellite images has been further developed in the operational ECMWF’s Integrated Forecasting System (IFS) Cycle 48r1 to include visible simulated images in addition to the existing infrared images. Following progress in the radiative transfer modelling for visible wavelengths, reflectances that would be seen in a visible channel (635 nm and 810 nm of...

Whilst the users and the uses of extended range forecasts are inevitably wide-ranging, a common, basic user requirement for map products is visualising these two factors: (i) where there is a shift in the distribution of the ensemble member forecasts, and what the sign and magnitude of that shift is, and (ii) how ensemble member forecast spread compares with climatological (reforecast)...

Based on code ported from the Met Office, and as part of a collaborative effort connected to the Extratropical Cyclone product suite, ECMWF has been testing out a new set of medium range products related to the "density of fronts" across the ensemble. Products from each data time include the front density itself, and also a list of the "most representative member" for each lead time....