IndiaTop StoryTop StoryLatest News
Study Traces How an El Niño Changed the Pollution Map
Sentiment: NeutralHigh Priority
What Happened?
A new study reveals that atmospheric conditions, specifically El Niño and La Niña, significantly influence PM2.5 pollution levels in India. The research highlights a stark contrast in air quality between winters of 2022-23 and 2023-24.
Key points
- The winter of 2022-23 saw PM2.5 levels drop by up to 30% in north India.
- In contrast, Mumbai experienced a 45% increase in PM2.5 levels during the same period.
- The study published in Atmospheric Pollution Research links pollution changes to El Niño and La Niña conditions.
- During La Niña, stronger winds helped disperse pollutants, while El Niño led to stagnation in northern India.
- Jaipur recorded a 50% increase in PM2.5 levels compared to the 2019-22 average under El Niño.
Key insights
- The study suggests that even with low emissions, stagnant atmospheric conditions can lead to poor air quality.
- Conversely, high emissions may have less impact if strong winds disperse pollutants effectively.
- The findings highlight the need for broader climate considerations in local air quality management.
Why it matters
Understanding how atmospheric conditions affect pollution can help in developing better air quality management strategies.
Source
Times of India
