Of the three main types of heat-trapping greenhouse gases — carbon dioxide, methane and nitrous oxide — the biggest jump from 2020 to 2021 was in methane, according to the World Meteorological Organization.
A natural gas flare emits methane and other gases at an LNG plant in Cameron, La., on April 21, 2022.
Of the three main types of heat-trapping greenhouse gases — carbon dioxide, methane and nitrous oxide — the biggest jump from 2020 to 2021 was in methane, whose concentrations in the air came in with the biggest year-on-year increase since regular measurements began four decades ago, WMO said. Earlier on Wednesday the U.N’s climate office said current pledges to cut greenhouse gas emissions put the planet on course to blow past the limit for global warming countries agreed to in the 2015 Paris climate accord.It said its latest estimate based on 193 national emissions targets would see temperatures rise to 2.5 degrees Celsius above pre-industrial averages by the end of the century, a full degree higher than the ambitious goal set in the Paris pact to limit warming by 1.5 C .
A report published Wednesday by Climate Action Tracker who track nations’ pledges to reduce warming found that of 40 indicators for reducing emissions — like weaning off coal, ramping up electric vehicles or reducing deforestation — the world wasn’t on track for any of them to match the levels of emissions reductions scientists say are needed to limit warming to 1.5C.
Methane accounts for about more than one-sixth of the warming effect, said WMO. Three-fifths of methane reaches the atmosphere through the burps and farts of livestock, rice farming, use of fossil fuels, biomass burning and landfills; the rest comes from natural sources like wetlands and termites. “As the top and most urgent priority, we have to slash carbon dioxide emissions which are the main driver of climate change and associated extreme weather, and which will affect climate for thousands of years through polar ice loss, ocean warming and sea level rise,” he said.
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