Greenhouse gas levels hit high in 2021, EU scientists call for immediate action

With an average temperature 1.1-1.2C above 1850-1900 levels globally, 2021 was the fifth hottest year on record,. The last seven years were the world’s warmest on record “by a clear margin”, the European Union’s C3S said in a report on Monday.

The levels of planet-warming carbon dioxide and methane in the atmosphere hit record highs in 2021, one of the world’s hottest years ever and underlined the need for change, the EU’s Copernicus Climate Change Service (C3S) said, a report in The Peninsula, Qatar, said.

With an average temperature 1.1-1.2C above 1850-1900 levels globally, 2021 was the fifth hottest year on record,. The last seven years were the world’s warmest on record “by a clear margin”, the European Union’s C3S said in a report on Monday.

As greenhouse gases change the planet’s climate, the long-term warming trend continued and record-shattering extreme weather swept the world last year, from floods in Europe, China and South Sudan, to wildfires in Siberia and the United States.

“These events are a stark reminder of the need to change our ways, take decisive and effective steps toward a sustainable society and work towards reducing net carbon emissions,” C3S director Carlo Buontempo said.

Global levels of CO2 and methane, the main greenhouse gases, continued to climb, and both hit record highs in 2021.

Levels of CO2 in the atmosphere reached 414.3 parts per million in 2021, up by around 2.4ppm from 2020, C3S said.

C3S said levels of methane, a particularly potent greenhouse gas, have jumped in the last two years, but the reasons why are not fully understood. 

Europe had experienced its hottest summer on record in 2021, after a warm March and unusually cold April had almost wiped out fruit crops in countries, including France and Hungary. Sicily set a new European temperature high of 48.8C, a record awaiting official confirmation.

In July and August, a Mediterranean heat-wave stoked wildfires in countries including Turkey and Greece. 

In July, more than 200 people died when torrential rain triggered flooding in western Europe. 

Also that month, floods in China’s Henan province killed more than 300 people. In California, a record-smashing heat-wave was followed by the second-biggest wildfire in the state’s history, destroying forest land and adding to air pollution.

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