New Delhi, October 24: In a significant step towards strengthening India’s scientific response to the worsening air pollution crisis in Delhi-NCR, Union Minister of State (Independent Charge) for Science and Technology, Dr. Jitendra Singh, today inaugurated the world’s first-of-its-kind integrated air pollution analysis facility, designed to identify not only the level of pollution in the atmosphere but also its chemical composition, toxicity and real-time sources.
Named the Integrated Atmospheric Chemistry and Aerosol Toxicity Analysis Laboratory (AATAL), the facility has been established at the Delhi branch of the Indian Institute of Tropical Meteorology (IITM) under Mission Mausam, an initiative announced by Prime Minister Narendra Modi to strengthen India’s capabilities in weather and climate science.
The new laboratory marks an important shift in the country’s approach to air pollution management, moving beyond conventional air-quality monitoring and pollution-level reporting towards scientific identification of the sources responsible for deteriorating air quality. By providing real-time source apportionment and detailed chemical analysis, AATAL is expected to help policymakers and implementing agencies formulate more precise and evidence-based interventions for Delhi-NCR.
The facility brings together advanced atmospheric measurement instruments, chemical characterisation of pollutants, source identification, toxicity analysis and decision-support capabilities under one integrated scientific framework.
One of the most significant capabilities of AATAL is its ability to distinguish between different sources contributing to air pollution, including vehicular emissions, industrial activities, biomass burning, agricultural and crop-residue burning, construction activities, road dust and pollutants transported into Delhi-NCR from neighbouring regions.
By estimating the relative contribution of these sources at a particular time, the laboratory will help authorities understand which sectors are driving pollution episodes and where corrective action is likely to have the greatest impact.
This is particularly important for Delhi-NCR, where air pollution is influenced by multiple sources whose relative contributions change with weather conditions, seasonal variations, atmospheric chemistry and regional transport of pollutants.
For instance, the contribution of vehicular emissions, industrial activities and crop-residue burning may vary considerably from one pollution episode to another. AATAL’s real-time analytical capabilities are expected to provide a more dynamic understanding of these variations, enabling authorities to move away from broad-based interventions towards measures targeting the most significant sources at a given time.
Explaining the significance of the facility, Dr. Jitendra Singh said Delhi-NCR had been selected because of the serious public concern surrounding air pollution in the region.
He said the new system would take air-quality assessment beyond simply reporting whether pollution levels were high or low. It would help establish what the pollution consists of, where it originates, the relative contribution of different sources and the potential health implications of various pollutants.
“Earlier, the discussion would largely revolve around whether the pollution level was 100 or 200. This facility will help us understand the composition of pollution as well as the contribution of different sources. This is important for addressing the concerns of the people of Delhi and ensuring that action is based on scientific evidence,” the Minister said.
Demonstrating the practical application of the facility, Dr. Jitendra Singh referred to the live information displayed on the laboratory’s monitoring screen, which showed that transport-related emissions were contributing approximately 25 per cent of Delhi’s air pollution at that particular moment, while the overall pollution level was around 180.
The example illustrated how the new facility could provide authorities with information about the sources contributing to pollution in real time, rather than relying exclusively on aggregate air-quality readings.
Such information could help pollution-control agencies determine whether vehicular emissions, industrial activities, dust or other sources require greater attention during a particular pollution episode.
The Minister said the capability would enable a more targeted approach to pollution management, ensuring that interventions are based on actual scientific assessments rather than general assumptions about the sources of pollution.
However, the relative contribution of individual sources is expected to vary with time, location and atmospheric conditions, making continuous monitoring and analysis essential.
Another important feature of AATAL is its advanced capability to analyse the chemical composition of atmospheric gases and aerosols, including fine particulate matter (PM2.5), metals, toxic elements and other potentially harmful constituents.
While conventional air-quality monitoring largely focuses on measuring the concentration of pollutants, the new facility will allow scientists to examine what these pollutants actually contain and how their chemical composition changes in the atmosphere.
The laboratory will investigate the interactions and transformations of different pollutants and assess how various chemical constituents contribute to the overall pollution burden.
Dr. Jitendra Singh emphasised that all particulate pollution does not necessarily have the same health implications. The presence of metallic elements and other potentially harmful components makes it important to understand not only the concentration of particulate matter but also its chemical characteristics and potential toxicity.
The scientific evidence generated by the laboratory could help health authorities develop a better understanding of the potential risks associated with different types of particulate pollution.
It could also facilitate stronger coordination between atmospheric scientists, medical researchers, public-health institutions and environmental agencies to examine the relationship between pollution composition and its health impacts.
AATAL has been integrated with IITM’s AIRWISE (Air Quality Warning and Integrated Decision Support System for Emissions), which combines air-quality observations, forecasts and source-apportionment information to support pollution-management decisions.
One of the key strengths of AIRWISE is its ability to provide air-quality forecasts at a spatial resolution of 400 metres for the next 72 hours.
This high-resolution forecasting capability will enable scientists and authorities to assess how pollution levels may vary across different neighbourhoods and locations within Delhi, rather than treating the entire city as a single pollution zone.
The system can also help identify the likely sources expected to contribute to deteriorating air quality in specific pockets, providing authorities with advance information to prepare appropriate interventions.
Dr. Jitendra Singh described the integrated capability as a major advancement, stating that it would provide real-time information and forecasts for the coming days, helping authorities anticipate changing pollution conditions and take timely preventive action.
Dr. Sachin Ghude, Project Director, MAQWS, said the integrated facility would significantly strengthen air-quality management in Delhi-NCR by providing early warnings and detailed information on pollution sources, including stubble burning, vehicular emissions, construction activities and road dust.
He said the information would be particularly useful for the Commission for Air Quality Management (CAQM) and other implementing agencies in identifying major pollution sources, planning targeted interventions and assessing the effectiveness of measures taken.
Dr. Ghude also highlighted the technological significance of the 400-metre-resolution forecasting system, describing it as a major advance in India’s air-quality forecasting capabilities and comparable with global forecasting systems.
He said the technology also offered the potential to extend similar forecasting capabilities to other Indian cities in the future.
The launch of AATAL comes at a time when Delhi-NCR continues to face recurring air pollution episodes, particularly during the winter months, when unfavourable meteorological conditions, low wind speeds and atmospheric inversion can aggravate the accumulation of pollutants.
The region’s pollution challenge is complex, involving emissions from transport, industries, construction and road dust, biomass burning and regional sources. The relative contribution of these sources can change depending on weather conditions and seasonal factors.
In this context, the availability of real-time source-apportionment information could strengthen the implementation of the Graded Response Action Plan (GRAP), which prescribes a series of emergency measures depending on the severity of air pollution.
For the CAQM and other implementing agencies, the facility is expected to provide measurement-based scientific evidence to identify the sources responsible for deteriorating air quality, prioritise sectors and locations for intervention and assess whether corrective measures are delivering the desired results.
For example, if vehicular emissions are found to be a major contributor during a particular period, authorities could give greater attention to traffic management and transport-related emission controls. Similarly, if dust or industrial emissions are identified as significant contributors, interventions could be directed towards construction sites, road-dust management or industrial pollution-control measures.
The system could also help authorities anticipate pollution hotspots and prepare preventive measures before air quality deteriorates further.
However, the effectiveness of this scientific infrastructure will ultimately depend on how quickly its findings are translated into coordinated action by the agencies responsible for implementing pollution-control measures.
Emphasising the need for institutional coordination, Dr. Jitendra Singh said air pollution could not be addressed by a single ministry or department working in isolation.
He described AATAL as an example of the whole-of-government approach advocated by Prime Minister Narendra Modi, bringing together scientific institutions, environmental authorities, pollution-control agencies and disaster-management stakeholders.
The Minister underlined the importance of coordinated engagement among the Ministry of Earth Sciences, the Ministry of Environment, Forest and Climate Change, pollution-control authorities and disaster-management agencies to ensure that scientific information is converted into effective action on the ground.
The inauguration ceremony was attended by Dr. T. Srinivasa Kumar, Secretary, Ministry of Earth Sciences; Dr. A. Suryachandra Rao, Director, IITM; and DG IMD Dr. Mahapatra, among other officials and scientists.
The inauguration of AATAL represents an important development in India’s efforts to strengthen its scientific understanding of air pollution and improve the effectiveness of pollution-control strategies.
Its significance lies in bringing together four critical capabilities: real-time atmospheric measurements, detailed chemical characterisation, identification of pollution sources and high-resolution air-quality forecasting.
For years, air pollution management has faced a fundamental challenge: knowing that air quality has deteriorated does not necessarily reveal which sources are responsible for the deterioration at a particular time and location.
AATAL seeks to address this gap by providing scientific evidence on the composition, origin and potential toxicity of pollutants. When integrated with AIRWISE forecasting, the facility could help authorities anticipate pollution episodes, identify the sectors requiring immediate attention and evaluate the effectiveness of interventions.
Nevertheless, scientific monitoring and forecasting alone cannot clean the air. Their real value will depend on the willingness and capacity of government agencies to act on the evidence, enforce emission standards and ensure accountability across sectors and states.
As Delhi-NCR confronts another challenging pollution season, the new laboratory offers an opportunity to make air-quality management more precise, transparent and science-driven. The larger test will be whether this advanced scientific infrastructure can translate better data into measurable improvements in the air breathed by millions of people across the region.
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