Jharia Underground Coal Fires May Emit 750 MT CO₂‑eq Annually, Study Finds

<h2>Overview</h2> <p>The <span class="key-term" data-definition="Jharia coal fields — a large coal mining region in Jharkhand, India, known for long‑standing underground fires (GS3: Environment/Energy)">Jharia coal fields</span> have been burning beneath the ground for decades. A recent joint study by researchers from the UK and India, including the <span class="key-term" data-definition="CSIR‑Central Institute of Mining and Fuel Research (CIMFR) — a premier Indian research institute under CSIR focusing on mining, fuel and related technologies (GS3: Science & Technology)">CSIR‑Central Institute of Mining and Fuel Research (CIMFR)</span>, reveals that the fire‑affected zones may be hotter and emit more <span class="key-term" data-definition="Greenhouse gases — gases like CO₂ that trap heat in the atmosphere, contributing to global warming (GS3: Environment/Economy)">greenhouse gases</span> than earlier estimates.</p> <h3>Key Developments</h3> <ul> <li>Collapse structures created by burning coal seams can extend vertically over 100 m, acting as chimneys for hot gases.</li> <li>Field work (2018‑2023) in the Ena, Bastacolla and Tisera collieries documented cavities up to 10 m wide and identified melted rock forms.</li> <li>Researchers discovered <span class="key-term" data-definition="Paralava — rock that has melted and resolidified due to the high temperature of coal fires (GS3: Geology/Environment)">paralava</span> and a glass‑enveloped rock dubbed “<span class="key-term" data-definition="Birianiite — a newly identified glass‑enveloped rock formed in Jharia’s fire‑collapsed cavities, named for its resemblance to a rice dish (GS3: Geology)">birianiite</span>”.</li> <li>Computer simulations suggest isolated collapse structures could reach temperatures close to <strong>4,000 °C</strong>, far above typical underground fire estimates.</li> <li>Using modeled coal consumption, the study estimates a <span class="key-term" data-definition="Global warming potential (GWP) — a measure of how much heat a greenhouse gas traps compared to CO₂ over a specific time horizon (GS3: Environment)">global warming potential</span> of up to <strong>748.72 MT CO₂‑equivalent per year</strong> for Jharia – nearly double India’s total territorial emissions in 2023.</li> </ul> <h3>Important Facts</h3> <p>When mining exposes coal to oxygen, natural oxidation can trigger an <span class="key-term" data-definition="Underground coal fire — a fire that burns beneath the earth’s surface, often ignited when mining exposes coal to oxygen; it releases heat and gases for decades (GS3: Environment/Energy)">underground coal fire</span>. These fires spread irregularly, making direct measurement difficult. The study combined field observations with numerical modelling to overcome this limitation.</p> <p>The authors note that their temperature and emission estimates exclude certain real‑world processes such as chemical reactions and mechanical deformation, which could modify the results. Moreover, the emission figure hinges on assumptions about the extent of burning and the size of collapse cavities.</p> <h3>UPSC Relevance</h3> <p>Understanding Jharia’s fire dynamics is vital for several UPSC topics:</p> <ul> <li><strong>Energy &amp; Environment (GS3):</strong> The case illustrates challenges of fossil‑fuel extraction, unregulated <span class="key-term" data-definition="Fugitive emissions — unregulated releases of gases, often from uncontrolled sources like coal fires, that are not captured in official inventories (GS3: Environment/Energy)">fugitive emissions</span>, and their impact on climate change.</li> <li><strong>Science &amp; Technology (GS3):</strong> The use of remote sensing, mineralogical analysis, and computer modelling showcases interdisciplinary research methods.</li> <li><strong>Policy &amp; Governance (GS2):</strong> Highlights the need for stronger monitoring mechanisms and regulatory frameworks for non‑point source pollution.</li> </ul> <h3>Way Forward</h3> <p>To mitigate the climate impact of Jharia’s fires, policymakers should consider:</p> <ul> <li>Integrating <span class="key-term" data-definition="Fugitive emissions — unregulated releases of gases, often from uncontrolled sources like coal fires, that are not captured in official inventories (GS3: Environment/Energy)">fugitive emissions</span> from underground fires into national GHG inventories.</li> <li>Deploying advanced remote‑sensing and ground‑based monitoring to map collapse structures and temperature hotspots.</li> <li>Exploring controlled extinguishing techniques, such as inert gas injection or surface sealing, while assessing ecological and social impacts.</li> <li>Strengthening inter‑agency coordination between the Ministry of Coal, Ministry of Environment, and research institutes like <span class="key-term" data-definition="CSIR‑Central Institute of Mining and Fuel Research (CIMFR) — a premier Indian research institute under CSIR focusing on mining, fuel and related technologies (GS3: Science & Technology)">CIMFR</span> for continuous research and policy guidance.</li> </ul> <p>Addressing these challenges will not only curb local air pollution but also contribute to India’s commitments under the Paris Agreement.</p>