Emission list will be prepared afresh for Delhi-NCR. file photo
Sanjeev Gupta, New Delhi. A consortium of four institutions led by the Pune-based Automotive Research Association of India (ARAI) - IIT Delhi, The Energy and Resources Institute (TERI) and IITM Pune - will prepare a new emissions inventory and source assessment study for NCR, including Delhi.
Suggestions have been invited from the public on this till 10th February. Remember that in its January 3 issue, Jagran had raised this issue prominently in a news titled “The share of pollutants is being told on the basis of five year old emissions list”.
The Commission on Air Quality Management (CAQM) has directed this study and inventory to map emissions at high resolution to cover major polluting areas, taking 2026 as the base year.
There will be improvement in forecast
According to CAQM, the new emissions inventory will be integrated with air quality early warning systems (EWS) and decision support systems (DSS) to improve air quality forecasting. It can also help in formulating more effective strategies in the fight against pollution.
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CAQM officials said a committee of experts was also constituted in April last year to develop a framework of emissions inventory and source apportionment for Delhi and NCR. The CAQM also noted pronounced seasonal variations, summarizing previous source apportionment studies conducted between 2015 and 2025. Officials said this emissions inventory will incorporate recent activity data, improved methodology and ongoing policy measures to more accurately assess emissions.
Emissions will be used for predictive modeling to further strengthen source apportionment and improve real-time assessment of pollution sources.
The following data and facts will also be taken into account in the new emissions inventory and source assessment study:-
Share of pollutants in winter
share of pollutants in summer
1. The current pollution control (PUC) system does not monitor particulate matter (PM) emitted from the tailpipe and is not an accurate representation of emissions.
2. Action is a challenge due to the presence of small and unorganized units operating in unauthorized or peripheral areas. Industrial pollution is further aggravated by illegal burning and uncontrolled emissions of non-harmful industrial wastes such as plastics and rubber.
3. Debris from construction and demolition activities is generated in large quantities every day and is often dumped illegally near roads and open areas. This increases particulate matter pollution significantly.
4. Unreliable grid power supply has significantly increased the use of diesel generator sets in NCR. Operations at regional airports also contribute to pollution, primarily due to emissions of gaseous pollutants during flight activities. Hotels and restaurants' reliance on solid fuels and lack of emission control systems have also been identified as the main sources of pollution.
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