The Copernicus
Climate Change Service (C3S), implemented by the European Centre for
Medium-Range Weather Forecasts on behalf of the European Commission with
funding from the EU, routinely publishes monthly climate bulletins reporting on
the changes observed in global surface air and sea temperatures, sea ice cover
and hydrological variables. Additionally, the bulletin also includes highlights
regarding the boreal spring (March-April-May). Most of the reported findings
are based on the ERA5 reanalysis dataset, using billions of measurements from
satellites, ships, aircraft and weather stations around the world.
















