What is the CAQM studying about Delhi's air quality?

The CAQM has launched a source apportionment study to create a new inventory of Delhi-NCR's air pollution emissions.

How do secondary particulates affect Delhi's air quality?

Secondary particulates, formed from gases like those emitted by vehicles, significantly contribute to pollution, especially in winter.

What role does weather play in Delhi's pollution?

Meteorology, particularly low wind speeds and shallow boundary layers in winter, traps pollutants near the ground, worsening air quality.

Home / Environment / Delhi Pollution: New Study Targets Hidden Emission Sources

Delhi Pollution: New Study Targets Hidden Emission Sources

21 Jan

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Summary

A new study aims to create an updated emission inventory for Delhi's air quality.
Secondary particulates, formed from gases, significantly contribute to pollution.
Meteorology plays a crucial role in trapping pollutants during winter.

Delhi Pollution: New Study Targets Hidden Emission Sources

Delhi's air quality is undergoing a rigorous scientific investigation with the launch of a new source apportionment study by the Commission for Air Quality Management (CAQM). This comprehensive study aims to develop an updated inventory of emissions, utilizing high-resolution mapping to pinpoint sources ranging from household heating to crop residue burning.

The initiative seeks to overcome inconsistencies in previous studies by adopting a unified, data-driven approach. Findings will be integrated into the Air Quality Early Warning System and Decision Support System for more accurate, real-time data. The study will map emissions on a high-resolution 500m x 500m grid.

Recent reports highlight that secondary particulates, formed from gases emitted by vehicles and biomass, are a significant contributor to pollution, especially during winter. Atmospheric chemistry within the Indo-Gangetic Plain amplifies particulate pollution through secondary aerosol formation. Transport remains a primary source, with non-exhaust emissions and daily vehicle influx aggravating the issue.