Pollution

For an effective air quality management plan, a lot of information is required at various stages to ascertain the sources, their impacts on health, and their potential to control emissions. However, the most basic information that every city requires is ambient monitoring data. This data tells us, what is the level of air pollution, where and when is it the highest (spatial and temporal trends). It is very important that the ambient monitoring network for a city is representative, spatially and temporally, to support an effective long-term air quality management plan for the entire airshed of the city. For example,…

With rising concerns about air quality in the city, a number of private citizens have begun measuring pollutant levels in the atmosphere, and are publishing them. The Karnataka Pollution Control Board (KSPCB), which is tasked with monitoring air quality and protecting the public from the health risks of poor air, disputes these measurements, arguing that these are taken by un-certified sensors. That's true, but it's also not the end of the matter. The problem is quite simple - secrecy is the weakness of pollution control efforts in the country. The government has taken the view that it will collect its…

In response to the statement issued by the Karnataka State Pollution Control Board refuting the findings of the air-quality monitoring work released by Co Media Lab and Climate Trends, the organisations have in turn issued a clarification that the exercise was done to measure peak hour pollution levels in the city for a select amount of time on select routes in the morning as well as in the evening. The objective of the study was to measure and bring to fore the personalised exposure levels one is being subjected to while traveling on busy roads for a few hours every…

The Karnataka State Pollution Control Board has issued the following rejoinder on 22nd February to the press release by Climate Trends, on the air quality data monitoring exercise, published on 19th February. [Update] On 23rd February, the team behind the study, Climate Trends and Co Media Lab issued an addendum to clarify the points made in KSPCB's statement below.  On 21st February 2018, Co- Media Lab and Climate Trends have released the report on air quality of Bengaluru City, where it is reported that there are huge gaps in the KSPCB data on the smaller particulate matter ( PM 2.5).…

Even as the gentle city of soft, light breezes, namma Bengaluru, is getting gritty with particulate matter, there seems to be a disconnect between the citizen and the data. What exactly is blowing around? Is it possible to sense and detect the quality of air? How does Bangalore rate in the Air Quality Index (AQI)? Not too good. It has been found that the biggest air pollutant in the city is particulate matter (PM), specifically PM10 and PM2.5. These are tiny, irritant suspensions in the air that tend to enter and cause respiratory and even cardiovascular diseases. In 2015, Greenpeace…

What are we leaving behind for the next generation? If our grandchildren were to question us on the kind of water, river or environment that we have created for them and if that was how we had received it from our previous generations, would you be guilt-ridden? These were some of the questions that hung over the audience, as the Waterman of India, Dr Rajendra Singh, questioned the interest levels of Chennaiites in restoring the city’s river bodies. Dr Rajendra Singh was in the city to talk on Community and River Rejuvenation as part of the DAMned ART festival organised…

Bengaluru's air quality crisis, unlike that in the cities of the north, is a silent one; most online ambient stations which provide information to the public paint a fairly clean picture of the city’s air, though most of its citizens feel otherwise. In an effort to understand the palpable pollution levels in the air we breathe, in comparison to the ambient data being generated by the KSPCB, Co Media Lab and Climate Trends carried out a 7-day air quality monitoring exercise with the help of a low-cost monitor used to measure personalised exposure levels. The activity was spread over a…

The alarming air quality in the National Capital region (NCR), comprised of Delhi and adjoining areas, has found fresh mention in the Economic Survey 2017-18 tabled in Parliament on January 29th. It is well known by now that the average annual levels of PM2.5 – one of the most critical contaminants in the air we breathe – remain at above three times the prescribed level in this region. The Survey reiterates the four main reasons for Delhi’s worsening air quality – crop residue and biomass burning; vehicular emissions and re-destributed road dust; construction, industries, and power plants; winter temperature inversion,…

Four days before the Bhogi festival, the state Environment Minister, K C Karupannan had flagged off an awareness campaign at the Tamil Nadu Pollution Control Board (TNPCB) office in Guindy with a view to ensuring an improved post-Bhogi situation in the city. “Auto rickshaws sounded a recorded message over microphones as they plied across the city, warning citizens against the hazardous pollution created by festival practices. We sensitised people in all the fifteen zones in Chennai,” said a spokesperson from the TNPCB. But all claims by the TNPCB came to nought on Bhogi day when thick smoke engulfed the city,…

On Bhogi, people discard old and derelict things and look for new things that signal change or transformation. At dawn, people light a bonfire with logs of wood, other combustible stuff  (mainly knick knacks that are no longer useful at home). We knew it was coming. The burning of random stuff in the name of tradition. The pollution on Bhogi day. The itching eyes, burning throat, breathlessness.. But it turned out to be much worse than last year. Probably because we actually have a winter this year. so cooler temperatures, combined with zero wind this morning, caused a dense impenetrable…