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On processes controlling fine particulate matters in four Indian megacities
Vrinda Anand1, Nikhil Korhale1, Aditi Rathod2
1Indian Institute of Tropical Meteorology, Pune, Maharashtra, 411008, India; Savitribai Phule Pune University, India.
Environmental Pollution (Barking, Essex : 1987)
|August 17, 2019
Summary
Particulate matter pollution varies significantly across Indian cities. Geography and meteorology influence pollution levels, requiring city-specific strategies for improvement.
Area of Science:
- Environmental Science
- Atmospheric Chemistry
- Urban Climatology
Background:
- Particulate matter (PM2.5 and PM10) are significant air pollutants in Indian megacities.
- Anthropogenic emissions contribute to varying pollution levels despite similar sources.
Purpose of the Study:
- To analyze the role of geography and meteorology in seasonal particulate matter variability.
- To compare pollution footprints across Delhi, Mumbai, Pune, and Ahmedabad.
Main Methods:
- Utilized data from the SAFAR observational network in four Indian megacities.
- Analyzed particulate matter (PM2.5 and PM10) data across different seasons.
- Correlated pollution levels with geographical location and prevailing meteorological conditions.
Main Results:
- Delhi exhibits the highest particulate matter levels, while Mumbai has the highest PM2.5 share (60%) in PM10.
- Pollutant levels in Delhi, Mumbai, and Pune show strong seasonal variations.
- Ahmedabad displays minimal seasonal variation in pollutant levels.
- Landlocked (Delhi) and coastal (Mumbai) geographies significantly impact air pollutant distribution.
Conclusions:
- Geographical location and prevailing meteorology are key determinants of seasonal particulate matter variability in Indian megacities.
- Unique pollution profiles necessitate tailored, integrated mitigation strategies for each city.
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