Q6.Mumbai, Delhi and Kolkata are the three Megacities of the country but the air pollution is a much more serious problem in Delhi as compared to the other two. Why is this so?

Despite Mumbai, Delhi, and Kolkata being major megacities, Delhi consistently faces a far more severe air pollution crisis. This disparity stems from a complex interplay of geographical, climatic, and anthropogenic factors unique to the National Capital Region.

Geographical and Climatic Vulnerabilities

• Delhi's landlocked location and bowl-shaped topography hinder pollutant dispersion, unlike coastal Mumbai and Kolkata which benefit from strong sea breezes.
• Prevalent low wind speeds and frequent winter temperature inversions in Delhi further exacerbate pollutant accumulation close to the ground.

Anthropogenic and Regional Contributions

• High vehicular density, industrial emissions, and construction dust are significant local sources of pollution within Delhi.
• Stubble burning in neighboring states during specific seasons significantly contributes to Delhi's severe winter air pollution.
• Rapid urbanization, population growth, and inadequate waste management also worsen the city's pollution burden.

This confluence of adverse geography, unfavorable climate, intense local emissions, and regional factors collectively makes Delhi's air pollution problem far more acute than in Mumbai or Kolkata.