What is geo-engineering?

Deliberate large-scale intervention in the Earth's climate system intended to counteract warming.

What is termination shock?

The rapid warming that would follow if solar radiation management were stopped abruptly, since it masks warming without removing the greenhouse gases causing it.

Geo-engineering

noun (uncountable)

/ˌdʒiː.əʊ.ˌen.dʒɪˈnɪər.ɪŋ/

The deliberate large-scale technological intervention in Earth's natural systems, primarily the climate system, to counteract global warming. Two main categories are: Solar Radiation Management (SRM), which aims to reduce incoming solar energy (e.g., stratospheric aerosol injection, marine cloud brightening), and Carbon Dioxide Removal (CDR), which extracts CO₂ from the atmosphere (e.g., bioenergy with carbon capture and storage — BECCS, enhanced weathering). Geo-engineering is highly contested in UPSC GS3 and global climate governance because of its unintended transboundary consequences, equity concerns, and the 'moral hazard' it may create by reducing pressure to cut emissions.

✍️ Usage in a UPSC answer

India's official submissions to IPCC working groups have called for a multilateral governance framework before any state or private actor deploys stratospheric aerosol injection, warning that unilateral geo-engineering could disrupt the South Asian monsoon.

Synonyms

climate engineeringEarth-system interventionclimate interventionsolar radiation management (subset)

Antonyms

emissions reductionmitigationnatural climate regulationhands-off conservation

🌱 Word Family

geo-engineer (verb/noun), geo-engineered (adjective), geoengineering (variant spelling), solar geoengineering (noun phrase)

🔡 Root

Greek gē = Earth; Greek engineer from Latin ingenium = natural capacity, cleverness

📜 Etymology

The compound word fuses Greek gē (Earth) with engineering, a 19th-century English word derived via French ingénieur from Latin ingenium (cleverness, device). The climate-specific sense was popularised by physicist Freeman Dyson in the late 1970s and gained IPCC attention from the Fourth Assessment Report (2007) onward.

🧠 Memory Hook

GEO (Earth) + ENGINEERING (designing systems). Geo-engineering is humans trying to re-engineer the entire planet's thermostat — bold, risky, and potentially irreversible. Think of it as 'planetary plumbing' done with consequences no one fully understands.

🎯 How This Word Works in UPSC Writing

Deliberate large-scale intervention in the Earth's climate system to counter warming. The two families to distinguish in GS3 are solar radiation management, which reflects incoming sunlight without touching the cause, and carbon dioxide removal, which addresses the concentration itself. The strongest objection to the first is the termination shock: because it treats a symptom, stopping abruptly would produce rapid warming, and it also raises governance questions no single State can settle alone.

⚖️ Don’t Confuse It With

Geo-engineering is deliberate large-scale climate intervention. Solar radiation management reflects sunlight, treating symptoms. Carbon dioxide removal extracts the gas, addressing the cause. Mitigation reduces emissions at source and adaptation adjusts to impacts, and neither is geo-engineering.

🇮🇳 Hindi Meaning

भू-अभियांत्रिकी (bhū-abhiyāntrikī).

❓ Common Questions

What is geo-engineering?: Deliberate large-scale intervention in the Earth's climate system intended to counteract warming.
What is termination shock?: The rapid warming that would follow if solar radiation management were stopped abruptly, since it masks warming without removing the greenhouse gases causing it.

🌿 Environment & Ecology 📖 Seen in: Ecology Fundamentals — Ecosystems, Foo...

Relevant across:GS3 · Economy, Environment, S&T & Security

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