Greenhouse gas concentrations rose to a new record in 2023: WMO

Greenhouse gases surged to a new record in 2023, with CO2 levels rising by 2.3 parts per million in a year, according to a report by the World Meteorological Organization (WMO). The report stated that CO2 concentrations increased by 11.4% in just 20 years. CO2 is the most important greenhouse gas and accounts for 64% of climate warming effect.