From 2021 ECMWF extracts regional observational data available in real-time from Meteo-Hub and uses them for the data assimilation of forecast models, enriching the existing observational database.

The European weather agency collects data from Meteo-Hub through a scheduled request that is activated every hour. With this request, both the institutional regional data and the Meteonetwork amateur network data, are extracted.

The use of observational data by ECMWF testifies to the added value that regional observational weather data acquire by sharing on Meteo-Hub.

Data from 15 regions plus the autonomous provinces of Trento and Bolzano are currently available on the platform for a total of 4447 weather stations. The data is updated sub-hourly every 20 minutes and immediately made available through the OBSERVATIONS graphic map where the user, even if not registered, can select and download. Another way to obtain data, accessible to registered users, is the DATA EXTRACTION function which can be used both via API and via the interface.

Products available:

• PRESSURE
• WIND DIRECTION
• WIND SPEED
• MAXIMUM WIND GUST SPEED
• TEMPERATURE / DRY-BULB TEMPERATURE
• RELATIVE HUMIDITY
• TOTAL PRECIPITATION / TOTAL WATER EQUIVALENT
• TOTAL SNOW DEPTH
• RIVER LEVEL

The data are viewable and downloadable on the OPEN maps of Meteo Hub here: https://meteohub.mistralportal.it/app/maps/observations

A synthetic guide to the use of the different data extraction methods is available here:   https://www.mistralportal.it/user-guide/