State of the Global Climate 2021

The WMO report provides an update on the annual state of the climate observed in the year 2021, and shows continued trends (also reported in the IPCC reports) in terms of key indicators. These include concentrations of greenhouse gases, global annual mean surface temperature, global mean sea level, ocean heat content, ocean acidification, sea-ice extent and changes in mass of the ice sheets and glaciers. While the key indicators show that climate continues to change, information on socioeconomic impacts highlights the vulnerability of populations to current weather and climate events. The publication also provides most recent finding on climate related risks and impacts including on food security, humanitarian and population displacement aspects and impact on ecosystems.

The report is intended to help organizations to update leaders and citizens on the latest information about the state of the Earth system, the weather and  climate conditions in 2021, and the impacts of weather and climate events.