A study, published in the journal Environmental Research Letters, calculated that a full-scale push using existing technologies could cut methane emissions in half by 2030. Such reductions could have a crucial impact in the global effort to limit warming below 2 degrees Celsius (3.6 Fahrenheit) compared to preindustrial levels — a central aim of the Paris climate accord.
It follows new data that showed that both carbon dioxide and methane levels in the atmosphere reached record highs last year, even as the coronavirus pandemic brought much of the global economy to a halt. The report also comes as a growing body of scientific evidence has shown that releases of methane from oil and gas production, one of the biggest sources of methane linked to human activity, may be larger than earlier estimates.
While cutting back on carbon dioxide emissions will remain urgent, “it’s going to be next to impossible to remove enough carbon dioxide to get any real benefits for the climate in the first half of the century,” said Drew Shindell, the study’s lead author and a professor of earth science at Duke University. “But if we can make a big enough cut in methane in the next decade, we’ll see public health benefits within the decade, and climate benefits within two decades,” he said.
Read more about it:
Washington Post https://www.washingtonpost.com/climate-environment/2021/04/27/cut-methane-emissions-30-percent/
New York Times https://www.nytimes.com/2021/04/24/climate/methane-leaks-united-nations.html