Two main topics will be presented, namely climate monitoring and forecast diagnostics at the European Centre for Medium-Range Weather Forecasts (ECMWF). First, the climate monitoring activities undertaken as part of the Copernicus Climate Change Service (C3S) will be introduced. These activities include the publication of the monthly climate bulletins and the annual European State of the Climate report. Second, forecast diagnostics, and in particular the use of observations collected during the Atmospheric River Reconnaissance observational campaign in the northeast Pacific will be discussed. This topic is going to provide an overview of observations gathered from dropsondes and ocean buoys and present some of the main results found with these data, including the latest research on the jet stream.

David Lavers is a scientist at the European Centre for Medium-Range Weather Forecasts (ECMWF). His work focuses on the global water cycle and includes diagnostics of the ECMWF integrated forecasting system and climate monitoring. He has held previous positions at Scripps Institution of Oceanography, the University of Iowa, the University of Reading, and Princeton University. His PhD on seasonal hydrological prediction was from the University of Birmingham and the Centre for Ecology and Hydrology in the UK.