When El Niño becomes an economic crisis


When El Niño Becomes an Economic Crisis

UPSC Prelims + Mains Study Note


1. At a Glance


2. Why in the News


3. Background & Evolution

Period Milestone
1950s onward ENSO systematically studied; El Niño named by Peruvian fishermen for anomalous warm current near Christmas.
1982–83 One of the strongest El Niños on record; global crop failures and economic losses.
1997–98 Most intense 20th-century event; India's 1997 kharif output severely hit.
2002–03 India: monsoon deficient by ~19%; severe drought across 14 states.
2009 Weakest monsoon since 1972 (77% LPA); India's food inflation spiked to ~18% YoY.
2014–16 Back-to-back El Niño events (2014–15, 2015–16); India experienced two consecutive deficient monsoons. In 2015, India's maize output fell 4%, rice output fell 1%. [S4]
2023–24 Strong El Niño emerged mid-2023; IMD recorded below-normal monsoon in 2023; kharif sowing disrupted; rice export ban imposed (August 2023).
2025–26 New El Niño cycle forecast by NOAA; IMD projects 92% LPA for 2026. [S3]

4. Core Static Facts

El Niño — Definitional Basics - Full form of ENSO: El Niño–Southern Oscillation - Threshold: Sea Surface Temperature (SST) anomaly of +0.5°C above average in the Niño 3.4 region (central tropical Pacific) for ≥5 consecutive 3-month periods. - Opposite phase: La Niña (SST anomaly ≤ −0.5°C) - Monitoring agency (global): NOAA (USA); WMO coordinates international outlook - Monitoring agency (India): India Meteorological Department (IMD), under Ministry of Earth Sciences (MoES) - Indian monsoon season: June–September (JJAS); contributes ~70% of India's annual rainfall - LPA (Long Period Average): 87 cm (for 1971–2020 baseline) - "Below Normal" classification: 90–95% of LPA [S5] - "Deficient" classification: <90% of LPA - Rice yield correlation: During 2015 El Niño, India's rice output fell ~1%, maize ~4% [S4] - Food in India's CPI basket: ~46% weight — making food inflation highly sensitive to monsoon shocks [S3] - India's agriculture GDP share: ~18% of GVA; employs ~45–47% of workforce (Census/NSSO) - Key vulnerable crops (kharif): Rice, coarse cereals (maize, bajra), pulses, oilseeds, sugarcane - El Niño → Sugar: 2026–27 El Niño forecast to reduce sugar output in India and Thailand, tightening global export availability [S1] - NOAA probabilities (2026): 82% (May–Jul 2026); 96% (winter 2026–27) [S5]


5. Multi-Dimensional Analysis

Economic

Social

Environmental

Geopolitical / Strategic

Administrative

Scientific / Technological


6. Recent Developments (Last 12–18 Months)


7. Prelims Hooks (High-Density Factual Bullets)

  1. El Niño is defined by SST anomaly of +0.5°C or more in the Niño 3.4 region of the central tropical Pacific for ≥5 overlapping 3-month periods.
  2. ENSO stands for El Niño–Southern Oscillation; the Southern Oscillation refers to the atmospheric pressure seesaw between Darwin (Australia) and Tahiti.
  3. India's Long Period Average (LPA) for monsoon rainfall is 87 cm (1971–2020 baseline).
  4. IMD classifies monsoon as "below normal" when rainfall is 90–95% of LPA; "deficient" when it is below 90% LPA.
  5. Monitoring of El Niño in India is the mandate of IMD, under the Ministry of Earth Sciences — NOT the Ministry of Environment, Forest and Climate Change.
  6. NOAA's ENSO Diagnostic Discussion (2026) gives an 82% probability of El Niño during May–July 2026 and 96% probability for continuation through winter 2026–27. [S3]
  7. During the 2015–16 El Niño, India's maize output fell ~4% and rice output fell ~1%. [S4]
  8. El Niño can reduce sugar output in both India and Thailand simultaneously — affecting global export availability. [S1]
  9. Food items account for approximately 46% of India's CPI basket — making India's inflation especially vulnerable to El Niño-driven agricultural shocks. [S3]
  10. MGNREGS serves as the primary fiscal stabiliser during El Niño-linked rural distress — demand for work under the scheme spikes during drought years.
  11. IMD's Agrometeorological Advisory Services (AAS) are delivered to farmers via District Agrometeorological Units (DAMUs).
  12. A positive Indian Ocean Dipole (IOD) can partially offset El Niño's suppression of the Indian southwest monsoon.
  13. IMD's Long Range Forecast for 2026 projects monsoon at 92% of LPA — placing it in the "below normal" category. [S5]
  14. FAO Food Price Index agricultural sub-index rose 3% and cereal sub-index rose 4% between March and June 2026. [S1]
  15. Countries with a higher share of food in CPI experience larger inflation responses to El Niño shocks — a finding from IMF research. [S3]

8. Mains Relevance

GS Paper Syllabus Heading
GS-I Important geophysical phenomena — El Niño, La Niña, ENSO, monsoon variability
GS-III Agriculture — food security, irrigation, crop production; Economy — inflation, informal sector; Disaster Management — drought
GS-II Government policies and interventions — MGNREGS, NFSA, PM-AASHA; International organisations — FAO, WMO, NOAA

Plausible Mains Questions:

  1. "El Niño is no longer merely a meteorological event for India; it is a development crisis." Critically examine this statement with reference to India's informal economy, food security architecture, and adaptive capacity. (GS-III)
  2. Discuss the linkages between ENSO variability and India's agricultural GDP, food inflation, and fiscal management. What institutional mechanisms exist to mitigate El Niño-induced economic shocks? (GS-III)
  3. How does El Niño affect India's obligations under international food trade and its bilateral relations with food-importing nations? Illustrate with recent examples. (GS-II/III)

9. Related Topics to Study Next

Topic Connection
Indian Monsoon System Mechanistic basis — how ENSO modulates Indian Ocean SST and monsoon circulation
Indian Ocean Dipole (IOD) Moderating variable that can counteract or amplify El Niño's impact on monsoon
PM-AASHA & Price Stabilisation Fund Government's supply-side interventions during El Niño-driven food inflation
MGNREGS Rural employment safety net that expands during drought years — fiscal and social implications
National Food Security Act (NFSA), 2013 Legal framework for food entitlements — stress-tested by El Niño supply shocks
Groundwater Crisis in India El Niño intensifies aquifer depletion; connects to CGWB, Jal Jeevan Mission
Heat Action Plans (HAPs) Urban adaptation to El Niño-driven heat waves — Ahmedabad model, NDMA guidelines
WTO & Food Export Restrictions India's rice/wheat export bans during El Niño years test WTO disciplines on export curbs

10. Common Errors / Trap Areas

  1. El Niño ≠ always bad for India: El Niño can benefit the northeast monsoon (October–December) in southeastern India (Tamil Nadu, Andhra coast) — examiners test this nuance. Do not generalise "El Niño = drought everywhere in India."
  2. Ministry confusion: El Niño monitoring and IMD fall under Ministry of Earth Sciences (MoES) — NOT MoEFCC (Ministry of Environment, Forest & Climate Change), which many aspirants conflate.
  3. "Below Normal" vs "Deficient": These are distinct IMD categories. 90–95% LPA = Below Normal; <90% LPA = Deficient. The 2026 forecast (92%) is "below normal", not "deficient." [S5]
  4. NOAA vs IMD role: NOAA provides global ENSO forecasts; IMD issues India-specific monsoon forecasts. They are not interchangeable — questions may test which body issues which forecast.
  5. El Niño ≠ only agricultural problem: A common mistake is to confine El Niño's impact to farming. The article and IMF research explicitly show its reach into labour markets, inflation, fiscal policy, groundwater, and export diplomacy — all fair game for GS-III.

11. Sources