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Home Environment

The Global Methane Assessment baseline report

November 26, 2022
in Environment
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The Global Methane Assessment baseline report
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In news– The Global Methane Assessment: 2030 Baseline Report was launched at the Climate and Clean Air Ministerial Meeting at COP27 to the United Nations Framework Convention on Climate Change(UNFCCC). 

Key highlights of the report-

  • Report was prepared by the Climate and Clean Air Coalition and United Nations Environment Programme (UNEP).
  • As per the report, methane emissions can rise 5-13 per cent above 2020 levels by 2030 under a business-as-usual scenario.
  • This represents an estimated increase of 20-50 million tonnes of methane per year above current levels.
  • This greenhouse gas is responsible for nearly 45 percent of current net warming, the report underlined. 
  • The report evaluated the baseline, a scenario of what would happen without efforts such as the Global Methane Pledge.
  • The Global Methane Pledge was announced last year at CoP26. The goal is to slash global methane emissions by at least 30 per cent from 2020 levels by 2030.
  • Achieving the pledge could eliminate over 0.2 degree Celsius of warming from 2040-2070. 
  • At CoP27, 150 nations joined the pledge. India and China have not made the commitment yet.
  • Around 95 per cent of the Nationally Determined Contributions (NDC) now include methane or will include it in revised versions. 
  • Methane levels in the atmosphere in 2021 reached a record high of 1908 parts per billion. This is 262 per cent of the preindustrial era levels.
  • Agriculture, fossil fuels as well as solid waste and wastewater are the three major sources of methane.
  • Human activities release 350-390 million tonnes of methane annually. Emissions from the agriculture and fossil fuel energy sectors are around 120-140 million tonnes per year, roughly twice that of the waste sector.
  • Emissions are projected to rise by about 11 million tonnes annually by 2030 under a business-as-usual scenario from the agriculture sector.
  • Emissions from fossil fuels and waste are estimated to go up by 10 million tonnes and 9 million tonnes respectively by the decade’s end under the same scenario.
  • But the world could reduce emissions from these sectors by roughly 180 million tonnes per year (45 per cent) by 2030 using currently available measures.
  •  It added that the least-cost scenario requires reducing methane emissions by about 60 per cent from fossil fuels, 30-35 per cent from waste and 20-25 per cent from agriculture by 2030, compared to 2020. This can help contain global warming to 1.5°C — the goal set by the Paris Agreement.
  • The report highlighted substantial uncertainties in tracing emissions to specific sub-sectors such as livestock or oil.
  • At CoP27, the UN launched the Methane Alert and Response System (MARS) to track methane emissions. It will go live in January 2023. 
  • These developments, according to the report, will guide mitigation efforts more effectively, while also helping track changes in emissions over time as methane reduction policies are implemented.
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Source: Down To Earth
Tags: Down to EarthPrelims

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