Methane – Study Finds India’s Emissions Lower Than Some Global Estimates
A recent scientific analysis indicates that methane emissions across India could be lower than several widely referenced global estimates, highlighting the importance of improving national monitoring frameworks for this critical greenhouse gas.
Findings Point to Gaps in Global Estimates
The research suggests that commonly used international emission inventories may overstate methane levels in India. At the same time, the findings show that current domestic estimates may not fully capture the complete picture either. This gap underscores the need for more refined measurement systems capable of delivering consistent and reliable data.
Methane plays a significant role in global warming. Although it remains in the atmosphere for a shorter duration compared to carbon dioxide, its heat-trapping ability is much stronger. Because of this, reducing methane emissions is considered one of the fastest ways to slow near-term climate change.
Key Sources of Methane in India
In India, methane emissions mainly originate from agriculture, particularly livestock and rice cultivation, along with waste management practices and the energy sector. These sectors are deeply tied to the country’s economy and population needs, making it essential to understand emission levels accurately before designing reduction strategies.
Researchers emphasize that without precise data, efforts to cut emissions may fall short or lead to inefficient policy decisions. Improved tracking systems can help authorities target the most significant sources and adopt practical mitigation measures.
Study Details and Methodology
The study was led by Dhanyalekshmi Pillai from the Indian Institute of Science Education and Research in Bhopal, along with a team of Indian and international scientists. The team examined methane emissions during 2018 and 2019 using a combination of advanced tools and datasets.
Their approach integrated satellite-based observations, ground-level measurements, and atmospheric transport models. This combination allowed researchers to estimate methane levels with greater accuracy than traditional activity-based inventories.
According to the findings, India’s methane emissions are estimated to range between 21.9 and 24.9 teragrams annually. These figures are lower than several global inventory estimates but still higher than the country’s official estimate of 19.6 teragrams per year reported in its Fourth Biennial Update Report.
Role of Satellite Technology
A major component of the study involved data collected from the Sentinel-5P satellite operated by the European Space Agency. Its TROPOMI instrument measures methane concentrations by analyzing how sunlight interacts with atmospheric gases.
This technology provides near-daily global coverage and high-resolution data, enabling scientists to track methane levels across various regions, including agricultural zones, urban areas, wetlands, and coastal regions. When combined with scientific models, the data offers a more detailed understanding of how methane moves and accumulates in the atmosphere.
Need for Stronger Monitoring Systems
Researchers stress that the differences between global and national estimates highlight a clear need for improved observation networks in India. Better monitoring can help identify emission hotspots and ensure that inventories are both accurate and up to date.
Enhanced measurement systems could also support policymakers in developing targeted climate actions. Instead of relying on broad assumptions, authorities could focus on specific sectors or regions where reductions would have the greatest impact.
Implications for Climate Policy
As India continues to balance economic growth with environmental responsibility, accurate methane data will play a crucial role in shaping future climate strategies. Reliable estimates can help the country meet international commitments while minimizing economic disruptions.
The study suggests that integrating satellite technology with ground-based observations could become a standard approach for emission tracking in the coming years. Such advancements may not only improve national reporting but also contribute to global efforts in addressing climate change.