The CEMS Meteorological Data Collection Centre annual report 2023 : prepared by the CEMS Meteorological Data Collection Centre, in collaboration with the EC Joint Research Centre

The Copernicus Emergency Management Service (CEMS) Meteorological Data Collection Centre (METEO) collects, quality-controls and post-processes in situ and ground-based remote sensed meteorological data to provide input data tailored to the needs of CEMS European Flood Awareness System, and the CEMS European Forest Fire Information System. All data are quality-controlled. Data post-processing includes the calculation of minimum, maximum and mean values as well as the aggregation of totals over different accumulation periods. Data are then provided to CEMS as station lists or grids. This report provides an overview of the data collection, quality control, and post-processing activities completed during the year 2023. In 2023, METEO collected real-time data for 11 parameters from 35 data providers and around 22,000 stations. On average, 9,000,000 records were added to the database each day. Furthermore, the database included more than 31,500 stations with historical data. METEO constantly strives to improve the configuration of the database to enhance the product generation. In 2023, considerable efforts led to a substantially revised data validation protocol which leverages on improvements to existing checks and on newly developed routines. These efforts will enable the generation of a new version of the European Meteorological Observation high-resolution multi-variable gridded dataset in 2024. Finally, an analysis on data availability led to a proposal for future data collection strategy.