Not Delhi alone, pollution pan-india issue
SKEWED FOCUS An absence of uptodate analysis and research have created a virtual black hole about air quality in other parts of India compared to Delhincr
Smog and dust in Delhi and north India have for long hogged the headlines, sidelining the dangerous levels of air pollution in south India and Maharashtra. Despite the much-touted favourable weather conditions, about a third of ‘nonattainment cities’ identified by the Central Pollution Control Board (CPCB) that consistently fall short of air quality standards are spread across Andhra Pradesh, Telangana, Tamil Nadu and Maharashtra.
A non-attainment area is one which consistently flouts air quality standards set by the National Ambient Air Quality Standards (NAAQS).
The Centre has tried to put a positive spin on the narrow focus on Delhi. “We will use the experiences from Delhi in other cities,” Union environment minister Harsh Vardhan said. “The air everywhere is the same. There is no boundary when it comes to air.”
However, an absence of up-to-date analysis and research have created a virtual black hole about air quality in other parts of India compared to DelhiNCR.
Less than half of the real-time air quality monitoring stations are spread across south India and Maharashtra, compared to Delhi which alone has 17% of all monitoring stations.
“Monitoring is very poor across India and this is why the extent of pollution is not known,” Sunita Narain, director general, Centre for Science and Environment, said. “No data, but all sources exist, except for the fact that weather is on their side.” Invisible pollutants, visible damage
SOUTHERN DISCOMFORT
For decades, the argument that meteorological factors are driving pollution in north India has been used to avoid tackling sources that are under human control.
The same argument is used to deny that pollution is a problem in south India.
Natural factors may work to disperse pollutants in south India but the region is not exceptional when it comes to manmade sources of pollution.
“Both natural and man-made factors contribute to higher pollution in north India,” Gufran Beig, head of the System of Air Quality and Weather Forecasting And Research (SAFAR) programme, said.
“The higher the number of people, more the economic activity and more the pollution.”
In that regard, Bengaluru is no different from Delhi. Rapid urbanisation, growing vehicular traffic and energy needs and expanding industrial activity are not features of north India alone.
A CPCB report from 2006 and more recent studies show that vehicles and industries are the key pollution sources in major cities in south India.
In Bengaluru, transport, road dust resuspension and construction are major contributors to particulate matter pollution, a 2011 TERI study found. For nitrogen oxides (NOX), another pollutant, the major contributors are the transport sector, diesel generator (DG) sets and the industry.
Emissions from industries, transport and the residential sector accounted for more than 80% of particulate pollution for PM2.5 in the Mumbai Metropolitan Region (MMR) in 2016, revealed a study by SAFAR.
For Chennai, the CPCB found that dust was the main culprit followed by vehicular exhausts and construction activities. Industrial estates, a power plant, petrochemical plant and oil refineries in north Chennai add to the pollution in the city.
In Hyderabad, vehicles have also contributed significantly to particulate matter levels for both PM10 and PM2.5.
“An increase in air pollution in Andhra Pradesh and Odisha is expected in the next 25 years because of cement and iron and steel and power plants,” Chandra Venkataraman, a scientist at IIT Bombay said of particulate pollution.
In Tamil Nadu, despite a big push for renewable energy, 4.5GW of thermal power plants are under construction while another 5GW capacity plants have been sanctioned.
TOXIC COCKTAIL
Power plants are not just a source of particulate matter but also sulphur oxides (SOX), nitrogen oxides (NOX).
Some of the sources of particulate matter also emit other harmful pollutants SOX, NOX and volatile organic compounds (VOCS) which lead to the formation of surface-level ozone, a particularly harmful pollutant.
A 2006 CPCB study also found that Mumbai and Pune had higher levels of NO2 and SO2 than Delhi. In terms of benzene, a VOC, Bengaluru and Pune and higher levels compared to Delhi.
“Unlike the North, many cities in the southern part of the country may not need emergency response plans but most of them do need long-term action plans to bring down pollution levels below NAAQS limits and to meet World Health Organisation (WHO) standards for air quality,” a recent Greenpeace India report said, calling the problem a “national crisis”.
This is not news to the Indian government. For over a decade now, the Supreme Court has directed the Centre to pay attention to dangerous levels of air pollution in cities across India.
In a 2002 order, the court noted that the Respirable Suspended Particulate Matter (“RSPM”) levels in Ahmedabad, Kanpur, Sholapur, Lucknow, Bangalore, Chennai, Hyderabad, Mumbai and Kolkata are alarming and directed states to formulate a plan to tackle the air pollution.
What followed were half-hearted efforts through piecemeal measures. Fifteen years later, in December 2017, the Supreme Court again asked the Union environment ministry to notify a nationwide plan for tackling pollution.
The ministry responded saying it had directed states to draft action plans for non-attainment cities.
“The focus is on non-attainment cities it does not depend on the region,” CK Mishra, environment secretary, said.
No other city apart from Delhi has a comprehensive plan to tackle air pollution. Last October, Delhi-ncr got a graded response system for pollution when the Supreme Court-mandated Graded Response Action Plan came into force. stations as of Dec 14, 2017. Around 40% are located in south India
Tamil Nadu Maharashtra
Andhra Pradesh Telangana
Karnataka Kerala
LESS THAN HALF OF THE REALTIME AIR QUALITY MONITORING STATIONS ARE SPREAD
ACROSS SOUTH INDIA AND MAHARASHTRA, COMPARED TO DELHI, WHICH ALONE HAS 17% OF ALL MONITORING STATIONS
Long-term plans, the need of the hour No other city apart from Delhi has a comprehensive plan to tackle air pollution
Many cities in south India may not need emergency response plans but most need long-term action plans