Why Cloud Seeding is Not a Sustainable Solution for Delhi’s Air Pollution Crisis
Cloud seeding is often proposed as a 'quick fix' for Delhi’s winter air pollution, but experts argue it is scientifically unreliable and ethically questionable. Cloud seeding requires specific pre-existing cloud conditions and moisture, which are often absent during Delhi's dry winters. Even if successful, the relief is temporary as pollution levels typically rebound within days. Furthermore, the use of silver iodide or sodium chloride raises environmental and health concerns. Experts advocate for addressing root causes—vehicle emissions, construction dust, and biomass burning—through long-term systemic changes rather than relying on unproven 'snake-oil' technological interventions.
Key Points
- Cloud seeding depends on natural clouds and cannot create rain from thin air; it only triggers existing moisture.
- The process involves dispersing silver iodide or sodium chloride to trigger condensation and ice crystal formation.
- Relief from pollution via rain is temporary, and levels often rise again quickly once the rain stops.
- Experts call for focus on source reduction (vehicles, industry, dust) rather than reactive technological interventions.
Exam Facts
- Common chemicals used in cloud seeding: Silver iodide, sodium chloride.
- Primary winter pollution sources in Delhi: Vehicles, construction, power plants, and biomass burning.
- Cloud seeding is considered an 'untested' solution for large-scale urban air purification.
Read it. Retain it. Recall it.
Get spaced-repetition flashcards, daily quizzes and offline access — free on Android.