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VOL. I · EST. 11.2025 
SatyaDheesh
सत्याधीश
India's Ground Truth Record
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ISRO Detects Strong El Niño Looming, Threatening Global Weather and India’s Monsoon

GS3Economy · S&T · Environment · Security· Space technology (ISRO, missions)· Prelims + Mains·

Remote sensing and climate monitoring: a key GS3 topic for disaster management and science & technology.

Why in news

ISRO's EOS-06/Oceansat-3 satellite detected declining marine productivity and wind reversals in the equatorial Pacific, indicating a developing El Niño.

Background

ISRO's EOS-06/Oceansat-3 satellite orbits at 741 km above Earth. The World Meteorological Organization (WMO) forecasts an 80% probability for El Niño conditions between June and August 2026.

Facts for Prelims

  • S&TEOS-06/Oceansat-3: ISRO satellite used to monitor marine productivity and wind patterns.
  • FactEOS-06/Oceansat-3 orbital altitude: 741 km above Earth.
  • FactWMO forecast: 80% probability of El Niño conditions by June–August 2026.
  • PlaceEquatorial Pacific: Region where wind reversals and reduced chlorophyll-a levels indicate El Niño.

Prelims practice question

What is the orbital altitude of the ISRO EOS-06/Oceansat-3 satellite used to monitor marine productivity?

  1. (a)741 km
  2. (b)850 km
  3. (c)1200 km
  4. (d)500 km
Show answer

Answer: (a) 741 km — The note specifies that the EOS-06/Oceansat-3 satellite orbits at 741 km above Earth.

For Mains

Q. Discuss how satellite-based remote sensing enhances India's ability to mitigate the socio-economic impacts of extreme climatic phenomena like El Niño.

Dimensions to cover in your answer

  • Data integration: Combining ISRO's marine productivity data with WMO forecasts for early warning
  • Agricultural vulnerability: Impact of erratic monsoon patterns on food security and rural livelihoods
  • Technological sovereignty: Reducing reliance on foreign meteorological data for climate modeling

Keywords: Remote Sensing · Climate Resilience · Monsoon Dynamics · Marine Productivity · Early Warning Systems

Read the full news →Report a mistake in this noteSource: NDTV ↗Also: GS3 · Climate change & international agreementsAlso: GS1 · Geophysical phenomena (earthquakes, cyclones, volcanoes)

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This note is generated automatically from SatyaDheesh's news feed and mapped to the UPSC CSE syllabus. Check facts against the original report or PIB before using them in an answer.