Ecologists urge scientists and policymakers to study imminent ‘Super’ El Niño to prepare for the future
Scientists and ecologists say that India’s natural systems are likely to experience a range of potentially devastating impacts as a result of El Niño
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Context
A group of 188 Indian scientists and ecologists have issued an urgent warning about an imminent and potentially catastrophic 'Super' event projected for 2026-27. With Pacific Ocean temperatures rising significantly above the threshold, this event threatens to trigger severe droughts, heatwaves, coral bleaching, and widespread ecological disruption across India, prompting calls for extensive documentation and proactive mitigation strategies.
UPSC Perspectives
Geographical
The impending crisis revolves around the (ENSO), a critical climate pattern in the Pacific Ocean that profoundly influences global weather. El Niño is characterized by the unusual warming of sea surface temperatures (SSTs) in the central and eastern equatorial Pacific. The current data indicates an extreme deviation, with SSTs projected to reach +4°C above average, far exceeding the 0.5°C threshold that defines an El Niño event. This severe warming disrupts the normal trade winds, altering atmospheric circulation. For India, this typically results in a suppressed or delayed , leading to diminished rainfall and elevated temperatures. The severity of the impact will also be heavily modulated by the (IOD), a similar temperature fluctuation in the Indian Ocean. A positive IOD can partially offset El Niño's drying effects, while a negative IOD exacerbates them. Understanding this complex interaction is crucial for UPSC Geography, as questions frequently test the mechanics of ENSO and its correlation with the Indian monsoon system.
Environmental
The projected 'Super' poses an unprecedented threat to India's biodiversity and delicate ecosystems. The article highlights the extreme vulnerability of marine environments, specifically predicting severe coral bleaching. Corals, which have a symbiotic relationship with algae, expel these algae when stressed by elevated ocean temperatures, turning white and frequently dying. The emphasizes that reefs require at least a decade to recover from such events, making consecutive shocks devastating. Terrestrial ecosystems are equally at risk, with the , a global biodiversity hotspot, facing the prospect of large-scale tree mortality due to heat stress and prolonged drought. This disrupts the entire ecological balance, leading to changes in animal behavior, delayed fruiting, and increased frequency of forest fires. The concept of ecological resilience—an ecosystem's ability to absorb disturbance and reorganize while undergoing change—will be severely tested. UPSC questions often focus on the impacts of climate change on specific biomes and the mechanisms of phenomena like coral bleaching.
Economic
The economic ramifications of a severe are profound, cascading through multiple sectors of the Indian economy. The most immediate and critical impact is on agriculture, which remains highly dependent on the . A significant rainfall deficit leads to depleted soil moisture, reduced water storage in reservoirs, and stressed crops. This threatens food security, elevates inflation (specifically food inflation), and devastates the livelihoods of farmers. The crisis extends beyond agriculture; fisheries suffer due to disrupted marine ecosystems and coral bleaching, while pastoral communities face challenges due to lack of fodder and water for livestock. The article warns of a cascading effect, where diminished rural incomes depress overall economic demand. This scenario underscores the necessity of climate-resilient agriculture—strategies like crop diversification, efficient irrigation techniques, and drought-resistant varieties. For UPSC, analyzing the socio-economic impacts of climate anomalies and the policy responses required to mitigate agricultural distress is essential.