A recent study stated that Methane emissions from wetlands raised 5-6% from 2000-2006.
Findings of the report:
Methane emissions from wetlands rose at a rate of 1.3-1.4 teragrams (1 Tg equals 1,000,000 tonnes) per year from 2000 to 2021.
Emissions in 2020 and 2021 increased by 14-26 Tg per year and 13-23 Tg per year, respectively, compared to 2000-2006.
Methane is responsible for roughly 30 per cent of the rise in temperature since the pre-industrial period. It is also 84 times more potent on a 20-year timescale.
Methane, a short-lived climate pollutant (SLCP) with an atmospheric lifetime of roughly a decade, is a potent greenhouse gas tens of times more powerful than carbon dioxide at warming the atmosphere.
Methane’s atmospheric concentration has more than doubled since pre-industrial times and is second only to carbon dioxide in driving climate change during the industrial era.
Methane contributes to the formation of ground-level ozone, a dangerous air pollutant.
Ozone attributable to anthropogenic methane emissions causes approximately half a million premature deaths per year globally and harms ecosystems and crops by suppressing growth and diminishing production.
Approximately 60 per cent of total global methane emissions come from anthropogenic sources.
Of these, more than 90 per cent originate from three sectors:
fossil fuels- 35 per cent;
agriculture- 40 per cent;
Waste- 20 per cent
Wetlands like swamps, marshes, permafrost (permanently frozen ground), bog and fens are responsible for a third of total methane emissions.
Reducing human-caused methane emissions is one of the most cost-effective strategies to rapidly reduce the rate of warming and contribute significantly to global efforts to limit temperature rise to 1.5°C.
Steps were taken to Curb Methane Emissions:
COP 26 Pledges: At COP26 in Glasgow, over 100 countries signed an agreement to cut methane emissions by 30% by 2030.
MethaneSAT: Controlling methane emissions will require further scrutiny of its sources. To this end, satellites that will track methane leakage such as MethaneSAT have been planned to launch.
The International Energy Forum (IEF) launched the IEF Methane Initiative in June 2021 to develop a methane emissions measurement methodology.