Lockdown measures to stop the spread of the coronavirus pandemic had the added benefit of reducing greenhouse gas emissions by around seven percent, or 2.6 billion metric tons, in 2020.
This is the largest emissions reduction that has ever been recorded. But to reach the Paris agreement goal of limiting global warming to well below two degrees celsius above pre-industrial levels, the world needs to reduce emissions by one to two billion metric tons every year for the next decade and beyond, according to a new analysis published in Nature Climate Change.
“We need a cut in emissions of about the size of the fall [from the lockdowns] every two years, but by completely different methods,” Corinne Le Quéré, lead study author from the Tyndall Center for Climate Change Research at the University of East Anglia in England, told The Guardian.
Before the pandemic, emissions were already declining in some countries due to policy changes, the report found. In 64 countries, emissions declined by 160 million metric tons a year between 2016 to 2019 compared to 2011 to 2015. However, that reduction is only a tenth of what is needed worldwide to meet the Paris agreement goals. In 150 countries, emissions continued to increase by 370 million metric tons a year during the four years before the lockdown. Read more…