The problem of finding source of pollution in Delhi persists
1 month ago

The problem of finding source of pollution in Delhi persists

Hindustan Times  

On November 18, as Delhi’s Air Quality Index soared to a staggering 494 – the city’s second-most polluted day on record – questions loomed over the reasons behind the sudden spike. Yet, pinpointing the exact sources of pollution proved elusive, as key studies and real-time data systems remain outdated or defunct, leaving a critical void in the battle against Delhi’s toxic air. The Delhi government’s real-time source apportionment analysis, which sought to provide a granular understanding of pollution sources, has been inactive since November last year. This means that Delhi is left with only one model – the Decision Support System under the Union ministry of earth sciences, which can only “estimate” the contribution of pollution sources and relies on a three-year old emissions inventory. On November 18, DSS – managed by the Indian Institute of Tropical Meteorology in Pune – attributed 46.21% of Delhi’s PM2.5 pollution to “other sources,” which includes cross-border pollutants and contributions from outside the National Capital Region.

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History of this topic

Seven-year-long IIT-Kanpur study reveals worst pollution trends in Delhi
3 weeks, 5 days ago

Seven-year-long IIT-Kanpur study reveals worst pollution trends in Delhi

India Today  

Air pollution remains a persistent environmental challenge for Delhi, with rising levels of particulate matter, particularly PM2.5, severely affecting air quality. The findings of the study, from 2017 to 2023, also suggest that 10 pm to 11 am is the worst time for PM2.5 pollution owing to atmospheric conditions. Researchers from IIT proposed a public advisory to address pollution-related health …

Did Delhi's AQI exceed 1,500? Decoding conflicting air pollution readings
1 month ago

Did Delhi's AQI exceed 1,500? Decoding conflicting air pollution readings

India Today  

During the transitional months of October and November, Delhi often finds itself shrouded in a thick haze of pollution. IQAir, known for its real-time air quality data, does not impose an upper limit on AQI readings, unlike the CPCB's standards. This methodology offers a fresh perspective on pollution levels but has also highlighted the limitations of India's air quality monitoring …

Delhi Air Quality - Delhi pollution in ‘severe’ category, first this season, AQI soars to 429 - Delhi News
1 month, 1 week ago

Delhi Air Quality - Delhi pollution in ‘severe’ category, first this season, AQI soars to 429 - Delhi News

India Today  

The air quality in New Delhi and surrounding areas plummeted to the 'severe' category for the first time this season on Wednesday, with the Air Quality Index spiking to 429, posing a significant health hazard to residents, officials said. According to the Central Pollution Control Board, of the 36 monitoring stations in Delhi, 30 reported air quality in the 'severe' …

Real-time or average Air Quality Index: Which is more useful for Delhiites?
1 month, 1 week ago

Real-time or average Air Quality Index: Which is more useful for Delhiites?

India Today  

Delhi has once again found itself engulfed in a dense layer of smog, as air quality plummeted on Wednesday morning, entering the "severe" or "hazardous" category in several parts of the city. While the Central Pollution Control Board categorises the current air quality as 'very poor' based on 24-hour average figures, this does not capture the real-time severity experienced by …

DPCC seeks revised real-time pollution study, unlikely this year
3 months ago

DPCC seeks revised real-time pollution study, unlikely this year

Hindustan Times  

New Delhi The super-site set up by the Delhi government to track real-time pollution. Earlier this month, DPCC took over the super-site of the Delhi government at Rouse Avenue and a mobile van — both of which were being used till last year by IIT Kanpur to provide real-time data. A senior DPCC official, requesting anonymity, said there were concerns …

Delhi Minister directs DPCC to ensure functioning of air pollution control mechanisms ahead of winter
3 months, 3 weeks ago

Delhi Minister directs DPCC to ensure functioning of air pollution control mechanisms ahead of winter

New Indian Express  

NEW DELHI: Delhi Environment Minister Gopal Rai on Tuesday directed the principal secretary to ensure that the Real Time Source Apportionment infrastructure, an exercise to determine the air quality status based on real-time pollutant measurements and meteorological conditions, is fully operational before winter begins. it is directed that the existing infrastructure set up for conducting the study on Real Time …

Govt seeks to make operational real-time pollution data before winter onset
3 months, 3 weeks ago

Govt seeks to make operational real-time pollution data before winter onset

Hindustan Times  

New Delhi A view of the super-site for the real time source apportionment study of air pollution in New Delhi on Monday. Delhi’s environment minister Gopal Rai on Tuesday directed the principal secretary to ensure the real-time source apportionment study is made operational by the Delhi Pollution Control Committee before the onset of winter, to keep a tab on air …

Sixteen out of 65 pollution hot spots in Delhi fixed: Govt
11 months, 2 weeks ago

Sixteen out of 65 pollution hot spots in Delhi fixed: Govt

Hindustan Times  

Delhi’s environment department has said 16 or around 25% of the 65 “major” sources of local pollution identified at Delhi’s 13 pollution hot spots have so far been fixed this winter, with 43 other sources being “constantly monitored” to prevent local pollution. The review also revealed that a total of 4,555 “minor” dispersed sources of pollution were identified by the …

‘Gas chamber’ Delhi needs action, not posturing, L-G says as air quality worsens
1 year, 1 month ago

‘Gas chamber’ Delhi needs action, not posturing, L-G says as air quality worsens

The Hindu  

Saxena on Thursday took on the Delhi government over the deteriorating air quality, saying the city needs action, “not mere posturing”. Mr. Saxena’s comments came on a day when Delhi’s air quality index deteriorated to the ‘severe’ category from ‘very poor’ registered a day earlier. In response, the Aam Aadmi Party, in a statement, said the Delhi government has taken …

Delhi’s air quality remains in ‘very poor’ category, AQI remains 393
1 year, 1 month ago

Delhi’s air quality remains in ‘very poor’ category, AQI remains 393

Hindustan Times  

Delhi’s air quality remained on the brink of severe category as the air quality index was recorded at 393, according to the Central Pollution Control Board’s national bulletin released at 8am on Thursday– which is slightly better than Wednesday’s 4pm reading of 401. This comes barely a day after 24 of the city’s 35 air quality monitors run by the …

Real-time apportionment study up and running again in Delhi
1 year, 1 month ago

Real-time apportionment study up and running again in Delhi

Hindustan Times  

The Delhi government’s real-time source apportionment study has been operationalised, with real-time data on the sources of pollution from PM2.5 particulates impacting the Capital now available on the R-asmaan portal, officials aware of the matter said. The apportionment study looks at nine sources of PM2.5 particulates — secondary inorganic aerosols, road dust, vehicles, industries, construction, biomass burning, coal and fly …

Ways to manage air pollution in Delhi
1 year, 1 month ago

Ways to manage air pollution in Delhi

Hindustan Times  

As we approach Diwali, concerns about air quality gain momentum in the National Capital Region. These are: One, pollution source apportionment and source inventory by the Indian Institute of Technology-Kanpur for Delhi ; two, The Energy and Resources Institute study ; three, Automotive Research Association of India study ; and four, System of Air Quality and Weather Forecasting and Research …

Pollution source info in Delhi may restart next week
1 year, 1 month ago

Pollution source info in Delhi may restart next week

Hindustan Times  

Indian Institute of Tropical Meteorology on Friday said it will resume sharing data on the sources of pollution impacting Delhi’s air quality from next week, and that information from the two mechanisms it is involved in — the System of Air Quality and Weather Forecasting And Research and the Decision Support System — will be combined from now. HT Image …

AAP govt in Delhi says it does not know the source of Delhi air pollution
1 year, 1 month ago

AAP govt in Delhi says it does not know the source of Delhi air pollution

Op India  

On Wednesday, Delhi minister and AAP leader Atishi said that there was no official data available that could tell the different sources contributing to the pollution in Delhi. Notably, many times in the past, AAP leaders including Atishi and Arvind Kejriwal have blamed the stubble burning in Punjab and Haryana for the pollution in Delhi. Previously, AAP blamed stubble burning …

Centre for finding source of pollutants shuts down in Delhi as air quality drops
1 year, 1 month ago

Centre for finding source of pollutants shuts down in Delhi as air quality drops

India Today  

With a significant drop in its air quality, Delhi has once again started grappling with a formidable battle against pollution. The much-hyped real-time source apportionment center which was established by the Delhi government in collaboration with IIT-Kanpur, IIT-Delhi, and TERI stopped working within the months of its inauguration in January this year. PURPOSE OF APPORTIONMENT CENTER The supersite was designed …

Kejriwal unveils study, devices to help combat air pollution in Delhi
1 year, 10 months ago

Kejriwal unveils study, devices to help combat air pollution in Delhi

Hindustan Times  

Delhi chief minister Arvind Kejriwal on Monday unveiled a critical scientific study and a comprehensive set up commissioned by the state government to identify various sources of air pollution in the city as well as record their contribution in real time. Delhi chief minister Arvind Kejriwal at the launch of a Supersite and van for the real time source apportionment …

Soon, Delhi’s air pollution sources to be available in real time
1 year, 10 months ago

Soon, Delhi’s air pollution sources to be available in real time

The Hindu  

Delhiites would soon be able to know the different sources of air pollution in Delhi and their percentages on a real-time basis with the Aam Aadmi Party government all set to put the data in the public domain through a new website, an official source told The Hindu. This coming week, Chief Minister Arvind Kejriwal is scheduled to inaugurate a …

Minimal improvement in air quality in cities under National Clean Air Programme
1 year, 11 months ago

Minimal improvement in air quality in cities under National Clean Air Programme

The Hindu  

Four years since the introduction of the National Clean Air Programme — India’s firstnational policy on curbing air pollution — air quality has improved in only 49 out of 131 cities inFY 21-22, compared to the previous year, according to a report by the Centre for Research on Energy and Clean Air, on January 10. CREA estimates India will need …

What's the source of Delhi's winter pollution? 60% from external sources, says study
2 years, 6 months ago

What's the source of Delhi's winter pollution? 60% from external sources, says study

India TV News  

Highlights Around 64% of Delhi's winter pollution load comes from outside the capital's boundaries: Study Transport, dust, domestic biomass are major sources of locally-generated pollution Open fires, dust, transport major sources in "stubble burning" phase Around 64 per cent of Delhi's winter pollution load comes from outside the capital's boundaries, with "burning of agricultural waste" and "burning for heating and …

Delhi plans mesh of sensors to monitor pollution air hot spots
2 years, 11 months ago

Delhi plans mesh of sensors to monitor pollution air hot spots

Hindustan Times  

The national capital’s 40 real-time ambient air quality monitoring stations account for a network that roughly covers every 37 sq km of Delhi’s 1,484 sq km area, if these stations were spread out at equal distance from each other across the city. The denser the grid, the more accurate the readings will be,” he says, stating while costing nearly 30-40 …

Delhi Air Pollution News 69 Per Cent Of Air Pollution In Delhi Comes From Outside Delhi Environment Minister Gopal Rai
3 years, 1 month ago

Delhi Air Pollution News 69 Per Cent Of Air Pollution In Delhi Comes From Outside Delhi Environment Minister Gopal Rai

ABP News  

New Delhi: The air quality in Delhi-NCR has severely deteriorated due to increasing pollution. Meanwhile, Delhi Environment Minister Gopal Rai on Thursday said that no matter how hard they try, it is not possible to get rid of 69 per cent "outdoor pollution" without a joint action plan by the Centre and a monitoring team. The report matches 2016 TERI …

Vehicles accounted for 50 per cent Delhi pollution in early winter: Report
3 years, 1 month ago

Vehicles accounted for 50 per cent Delhi pollution in early winter: Report

India TV News  

Vehicles accounted for more than 50 per cent of Delhi's pollution during the early phase of this year's winter, from October 24 to November 8, according to an analysis by the green think tank Centre for Science and Environment. The Decision Support System of IITM is part of the Air Quality Early Warning System and provides information on the potential …

Vehicles biggest contributor of pollution in Delhi, reveals study
3 years, 1 month ago

Vehicles biggest contributor of pollution in Delhi, reveals study

India Today  

According to a study by the Think Tank Centre for Science and Environment, vehicles in Delhi have emerged as the major reason for air pollution. The Indian Institute of Tropical Meteorology has generated data showing that after traffic, household sources, industries and construction are the major leading sources of pollution in the national capital. Vehicles have emerged as the biggest …

Delhi’s 13 hotspots continue to record alarmingly high levels of pollution
3 years, 1 month ago

Delhi’s 13 hotspots continue to record alarmingly high levels of pollution

Hindustan Times  

Delhi’s 13 pollution hot spots – identified first in 2018, jointly by the Central Pollution Control Board and the Delhi Pollution Control Committee -- for area-specific action, continue to record alarmingly high levels of pollution, data shows. In a review meeting held by the DPCC on Tuesday evening, air quality data analysed between November 1 and November 8 shows that …

Scientists come up with THIS solution to fight Delhi-NCR air pollution
3 years, 5 months ago

Scientists come up with THIS solution to fight Delhi-NCR air pollution

India TV News  

Much ahead of the air pollution season in northwest India, especially in Delhi-NCR, scientists have come up with a Decision Support System that will not just help zero in on the exact sources contributing to Delhi's pollution, but also predict practical scenarios in winters. Since 2018, IITM has been issuing three-day and 10-day air quality forecasts for Delhi, based on …

Delhi Cabinet approves study for real time information on air pollution
3 years, 5 months ago

Delhi Cabinet approves study for real time information on air pollution

India TV News  

The Delhi Cabinet on Friday approved a proposal for conducting a study to find out real time information to help identify the factors behind the spike in air pollution in the national capital. Delhi Environment Minister Gopal Rai said: "The technology to carry out real-time source apportionment of pollution has not been implemented in any other city in the country." …

Cabinet okays real-time source study to combat air pollution
3 years, 5 months ago

Cabinet okays real-time source study to combat air pollution

The Hindu  

The Delhi Cabinet on Friday approved a real-time source apportionment study with an aim to curb air pollution in the city. Delhi Environment Minister Gopal Rai said the project would go a long way in identifying the various factors contributing to Delhi’s pollution and mitigating them. Identifying factors “The real-time source apportionment project will help identify the factors responsible for …

Pollution curbing project: problems outscore solutions
4 years ago

Pollution curbing project: problems outscore solutions

The Hindu  

A committee appointed by the Delhi government has raised red flags about a study to find sources of air pollution on a real time basis, which is being done for the government by the University of Washington in St. Louis and the study is "likely to be cancelled", multiple officials told The Hindu. The "real time source appropriation study of …

India’s air quality data for comparing annual pollution is patchy
4 years, 1 month ago

India’s air quality data for comparing annual pollution is patchy

The Hindu  

The base data available for monitoring trends in air pollution from 2016-2019 is irregular in most of the States in which the 102 cities that have been targeted for improving air quality are situated. Ideally, all of the cities ought to have 104 readings, from every monitor, every year, but this was rarely the case, and this data discrepancy would …

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