A new study is underway to assess how pollution sources in Delhi have changed in the past decade (AI image)
The high-resolution emission inventory and source apportionment study will provide updated emissions estimates for Delhi and 27 NCR districts using a 500mx500m grid, with each cell covering 0.25 sq km and 2026 as base year. Attri said the 500 m x 500 m resolution divides the region into small geographical cells.
For example, coal has been banned in NCR, except specified processes, and industries have shifted to cleaner fuels,” SD Attri, member technical, CAQM, said. NEW DELHI: What has changed in Delhi’s pollution mix over the past decade? Have cleaner fuels, vehicle technologies and tighter emission norms altered the contribution of different sources? “Changes in vehicle technology, fuel standards, industrial practices, pollution control measures, urban development, waste management and agricultural activity may have altered emissions and their relative contributions. It would enable detailed identification of emission hotspots and help distinguish areas with different source profiles. Apart from AI-based mapping using satellite imagery, several teams have been deployed for field verification to improve the identification of smaller sites. For example, vehicular emissions can be estimated using road networks, traffic volumes, vehicle categories and activity patterns. Industrial emissions can be assessed using information on industrial locations, production, fuel consumption and pollution control equipment. Road dust emissions require information on road characteristics, silt loading and relevant activity patterns.
geographical coverage, source-sector classification and base years, this study will follow a common framework, using high-resolution mapping, activity data, emission factors, geographical information, seasonal changes and ground verification by teams to estimate emissions from sources While earlier assessments differed in methodologies.
