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Placeholder CEMS-flood sub-seasonal and seasonal forecast anomaly and uncertainty computation methodology

Sub-seasonal prodcuts

There are two products sub-seasonal layers available on the EFAs EFAS and GloFAS websites, listed below:

Product no-1: Seasonal outlook

This product highlights the forecast signal on the rivers, including all river pixels above 50 km² in EFAS and above 250 km² in GloFAS. The forecast signal is indicated by colouring, which . The colours will represent the forecast anomaly and uncertainty categories, with 5 anomaly and 3 uncertainty sub-categories, in total with 15 different types of forecast signal. Each (large enough area) river pixel will be coloured all the time, as there is always a forecast signal, even a no signal , (i.e. perfectly normal condition, ) is going to be displayedindicated.

Each forecast lead time is going to be individually plotted in the layer, which can be animatedwith the control panel allowing the option to navigate/animate, the users being able to go back and force within the forecast horizon and check each forecast weekly lead time.

Product no-2: Seasonal outlook - basins

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