Tags:EnvironmentUPSC
For Prelims: Methane (CH₄), Global Warming Potential (GWP), COP (Conference of the Parties), Global Methane Pledge (GMP), Landfill Gas, COP31 Host, COP31 Dates, Methane potency vs CO₂ (first 20 years)
For Mains: Methane mitigation, short-lived climate pollutants, waste-to-energy, satellite monitoring (Tanager-1), COP31 priorities
Source:
The Hindu
5 facts for one-day exams
SSC, railway, police and teaching exams ask direct questions like these.
- COP31 is being held in Antalya, Turkiye from November 9-20, 2026.
- Methane is over 80 times more potent than carbon dioxide in its first 20 years.
- Turkiye is the world's 5th largest emitter of methane from solid waste.
- The Tanager-1 satellite detected methane plumes from Turkiye's landfills.
- The Global Methane Pledge aims for a 30% cut in methane emissions by 2030.
Why in the news?
COP31 is being held in Antalya, Turkiye (Nov 9-20, 2026), with methane reduction as a priority. Satellite data reveals Turkiye's landfills are among the world's largest methane emitters, with the Seymen landfill near Istanbul emitting an average of 7.4 tons of methane per hour. Methane is over 80 times more potent than CO₂ in the short term, making its reduction critical for slowing climate change.
Summary
- Methane is the second biggest cause of climate change after CO₂, being over 80 times more potent in its first 20 years.
- Turkiye is the world's fifth-largest emitter of methane from solid waste, after China, US, Russia and Brazil, per Climate TRACE.
- Satellite observations (Tanager-1, Jan 2025 to May 2026) identified 70 plumes from Turkiye's 10 highest-emitting waste sites, with rates from 841 kg to 7.4 tons per hour.
- The Global Methane Pledge (GMP), launched at COP26, seeks a 30% cut in methane emissions from 2020 levels by 2030; Turkiye is not a participant.
- Turkiye's Zero Waste Initiative aims to reduce landfill waste and has raised the national recovery rate to 37.53% in 2025 from 13% in 2017.
Highlights
COP31 in Turkiye
The UN climate summit is being held in Antalya from November 9-20, 2026, with methane reduction as a key priority.
Satellite Detects Methane Plumes
Tanager-1 satellite data revealed 70 methane plumes from Turkiye's top 10 landfill sites, with the Seymen landfill emitting an average of 7.4 tons per hour.
Mitigation Potential and Challenges
Addressing the largest landfills could deliver disproportionate emission cuts, but requires diverting organic waste and improving gas capture systems.
Background
Methane (CH₄) is the second most significant greenhouse gas after CO₂, with a global warming potential over 80 times greater than CO₂ over a 20-year period. The waste sector is a major anthropogenic source, as organic material in landfills decomposes anaerobically to release methane. The Global Methane Pledge (GMP), launched at COP26 in 2021, aims for a collective 30% cut in methane emissions from 2020 levels by 2030.
Key Analysis and Impact
Turkiye's waste sector illustrates the gap between policy intent and ground reality. Despite having gas capture systems at major landfills, satellite data shows persistent large leaks. The Seymen landfill's average detected rate of 7.4 tons/hour places it among the world's largest recorded emitters. Turkiye's methane emissions from waste rose nearly 25% in the decade to 2024, far exceeding the global average rise of 6.5%. The country is not a signatory to the GMP, but COP31 provides a platform to potentially join.
Way Forward
Experts suggest that cutting landfill methane requires a two-pronged approach: diverting organic waste before it reaches dumps (e.g., through composting and recycling), and improving capture rates at existing landfills through better-designed collection systems and repairs to cracked covers or faulty gas wells. Turkiye's Zero Waste Initiative, which raised recovery rates to 37.53%, shows progress but needs stronger regulation to enforce methane capture and reuse. Joining the GMP could signal commitment but must be backed by effective implementation.
Methane vs Carbon Dioxide (CO₂)
| Feature | Methane (CH₄) | Carbon Dioxide (CO₂) |
|---|---|---|
| Atmospheric lifetime | ~12 years | Hundreds to thousands of years |
| Global Warming Potential (20-yr) | Over 80 times CO₂ | 1 (baseline) |
| Global Warming Potential (100-yr) | ~28-36 times CO₂ | 1 (baseline) |
| Main sources | Landfills, livestock, fossil fuels | Fossil fuel burning, deforestation |
Background GK
Textbook concepts you need to understand this news
- Methane (CH₄)
- A potent greenhouse gas, the primary component of natural gas. It is released from landfills, agriculture (livestock), and fossil fuel extraction. Its global warming potential is 28-36 times that of CO₂ over 100 years, and over 80 times over 20 years.
- Global Warming Potential (GWP)
- A measure of how much energy the emissions of 1 ton of a gas will absorb over a given period, relative to 1 ton of CO₂. A higher GWP means greater warming effect.
- COP (Conference of the Parties)
- The supreme decision-making body of the United Nations Framework Convention on Climate Change (UNFCCC). It meets annually to assess progress and negotiate climate action.
- Global Methane Pledge (GMP)
- A voluntary initiative launched at COP26 in 2021, aiming to reduce global methane emissions by at least 30% from 2020 levels by 2030.
- Landfill Gas
- A mixture of gases (mainly methane and CO₂) produced by the decomposition of organic waste in landfills. It can be captured and used to generate electricity.
Facts to remember
Tap a card to see the answer. Try to recall it first.
How exams will ask this
- Data: Turkiye's Seymen landfill emits an average of 7.4 tons of methane per hour; methane is over 80 times more potent than CO₂ in the first 20 years.
- Nodal Body: United Nations Framework Convention on Climate Change (UNFCCC) for COP; no single Indian ministry for this foreign news.
- Legal Point: Global Methane Pledge (GMP) target: 30% cut from 2020 levels by 2030.
Don't make this mistake!
Confusing 'Global Methane Pledge' with a legally binding treaty (it is a voluntary pledge). Also, swapping the 20-year GWP (80x) with the 100-year GWP (~28x) of methane. Turkiye is a host, not a signatory to the GMP.
Write these in mains answers
- Methane mitigation, short-lived climate pollutants, waste-to-energy, satellite monitoring (Tanager-1), COP31 priorities
Stuck? Get it in one tap
COP31, the UN climate summit, is taking place in Turkiye. Methane, a gas that traps much more heat than CO₂, is a focus. Satellites found that Turkiye's landfills are releasing huge amounts of methane, especially the one near Istanbul. Reducing these leaks could help slow global warming quickly.
- COP31 is being held in Antalya, Turkiye from November 9-20, 2026.
- Methane is over 80 times more potent than carbon dioxide in its first 20 years.
- Turkiye is the world's 5th largest emitter of methane from solid waste.
- The Tanager-1 satellite detected methane plumes from Turkiye's landfills.
- The Global Methane Pledge aims for a 30% cut in methane emissions by 2030.
- Environment: Climate change and greenhouse gases
- International Relations: Global environmental governance (UNFCCC, COP)
Related concepts: Methane (CH₄), Global Warming Potential (GWP), COP (Conference of the Parties), Global Methane Pledge (GMP)
Practice questions
Pick an answer, then read the explanation.
- Q1Easy
Which international initiative, launched at COP26, aims to reduce methane emissions by 30% from 2020 levels by 2030?
Explanation: The Global Methane Pledge (GMP) was launched at COP26 in Glasgow, with a collective goal to cut methane emissions by 30% by 2030. The Paris Agreement is broader, the Kigali Amendment targets HFCs, and the Glasgow Climate Pact covers overall climate action.
- Q2Hard
Consider the following statements regarding methane emissions:
- 1.Methane is over 80 times more potent than carbon dioxide in its first 20 years in the atmosphere.
- 2.Turkiye is a signatory to the Global Methane Pledge.
- 3.The Tanager-1 satellite was used to detect methane plumes from Turkiye's landfills.
Which of the statements given above is/are correct?
Explanation: Statement 1 is correct: methane is over 80 times more potent than CO₂ over 20 years. Statement 2 is incorrect: Turkiye is not listed among the GMP participants. Statement 3 is correct: the UCLA analysis used data from the Tanager-1 satellite. Hence option C is correct.
- Q3Medium
What was the average detected methane emission rate from the Seymen landfill near Istanbul?
Explanation: The satellite data showed an average detected rate of about 7.4 tons per hour from the Seymen landfill. 4-6 tons per hour was cited by an ISTAC official as typical, while 12 tons was a single-day high reading that raised the average.
- Q4Medium
What is a key reason why cutting methane emissions is considered critical for slowing climate change in the near term?
Explanation: Methane has a high global warming potential (over 80 times CO₂) but a shorter atmospheric lifetime (~12 years). Reducing methane emissions can therefore deliver relatively rapid climate benefits. It is not the most abundant gas (CO₂ is), and it does not directly deplete the ozone layer.
Frequently asked questions
1. What is COP31 and where is it being held?
COP31 is the 2026 UN Climate Change Conference, being held in Antalya, Turkiye, from November 9 to 20, 2026.
2. Why is methane reduction a priority at COP31?
Methane is over 80 times more potent than CO₂ in its first 20 years, so cutting it can slow warming relatively quickly. Turkiye has made methane reduction a key theme for the summit.
3. What did satellites reveal about Turkiye's landfills?
Satellite data (Tanager-1) detected 70 methane plumes from Turkiye's 10 highest-emitting waste sites, with the Seymen landfill near Istanbul emitting an average of 7.4 tons of methane per hour.
4. What is the Global Methane Pledge?
Launched at COP26, it is a voluntary pledge to reduce global methane emissions by at least 30% from 2020 levels by 2030. Turkiye is not a participant.
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- Original7 November 2026 · Read story
