CAQM report says “secondary particulate” top cause of Delhi winter pollution
GS3Economy · S&T · Environment · Security· Pollution (air, water, plastic)· Prelims + Mains·
Why in news
The Commission for Air Quality Management (CAQM) released a report identifying secondary particulate matter as the primary driver of Delhi's winter pollution to inform the Air Quality Early Warning System.
Background
The CAQM report released on January 21, 2026, identifies secondary particulate matter as the largest contributor to winter pollution at 27%. Other major contributors include transport (23%) and biomass burning (20%).
Facts for Prelims
- BodyCAQM: Commission for Air Quality Management, established to oversee air quality in the NCR.
- FactSecondary particulate matter contributes 27% to Delhi's winter pollution.
- FactTransport and biomass burning contribute 23% and 20% respectively to winter pollution.
- BodyIITM Pune: Developed the Air Quality Early Warning System and Decision Support System.
For Mains
Q. Analyze the role of source apportionment studies and real-time monitoring systems in mitigating urban air pollution in the National Capital Region.
Dimensions to cover in your answer
- Data integration: Need for standardized analysis methodologies across diverse regional studies
- Technological intervention: Leveraging IITM Pune's Decision Support System for proactive policy response
- Source-specific mitigation: Addressing secondary particulate formation vs primary biomass burning
Keywords: Source Apportionment · Secondary Particulate Matter · Air Quality Management · Decision Support System · Emissions Inventory
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