MEF

What is Choking Delhi’s Air ?

The title could have, as well been “What is choking the Indian Skies”. After all, the air in whole of India seems polluted.

To start with, we pulled up a real-time map of air pollution across the world. Here is the view we see on most of the days. It’s not just Delhi, it’s Kolkata, and Mumbai, and Lucknow, and Kanpur, and Varanasi, and Allahabad, and most of the major Indian cities. By many parameters, India has 14 of the Top 20 polluted cities in the world!
Few months back, we started on a “massive” journey to solve the most critical problems facing the Earth. Crisis situations like the one above is a sign of something gone terribly wrong in the way India is progressing. We knew things will not be intuitive, much less easy.

One of the problems we looked at recently, was that of pollution in Delhi’s air. One widely used index to measure air pollution is called the AQI (Air Quality Index). AQI normally has 6 grades, with values ranging from 0 to 300. Anything above 300, is Hazardous. For example, here is the AQI levels in Tokyo, Japan & Delhi, India.
As you can see, most of it is green with AQI of less than 50. And almost all within 70. Apart from the glaring difference in AQI level, there is also a huge difference in number of air quality stations in Tokyo vs those in Delhi. One would think that, extreme levels of pollution ought to have sprung Delhi into action, but we don’t seem to care. The popular adage ‘You can’t solve what you don’t measure’, seems relevant here.
The most troubling thing about Delhi’s Air is not that it is so highly polluted, but that we are oblivious to it. While in many countries, alarms go ringing across the establishment at AQI in USG range (101 – 150), we hardly seem to care even in Hazardous zone (300+).
Most digital displays for AQI have only 3 digits since anything above 300 is Hazardous. Delhi is one of the few cities and perhaps the only national capital in the world to have maxed out the AQI displays as well.
So, what is choking Delhi’s Air? And why we don’t seem to care even at AQI levels that would be terrifying for most Govts and Policy Makers across the world? Why is that California, even after massive forest fires still is at AQI levels that is 2 grades less than us? And how can we solve it?

While there is visibility on the sources, like Paddy Burning, Dust, Vehicular Pollution, Power Generation etc, we found there is very little clarity on the quantum of each source. This is hardly surprising given the low number of air pollution monitoring stations Delhi has. Different sources, experts and institutions have widely different numbers – sometimes varying by as much as 200%. While we see lot of noise about Paddy Burning, we hardly see any noise about the others. Why is that so?

What are the alternatives farmers have? Why is paddy being burned at all? And is Paddy really as big a source?

The Prime Suspect – Paddy Burning


When we look at paddy burning, we ask a simple question why and when did it start? Why is it prevalent in North India, mainly Punjab and Haryana, but not in other states? Studies gives us two important pointers.

Level of Farm Mechanization: We looked at the level of farm mechanization in India.


Punjab and Haryana have the highest level of farm mechanization among all Indian state. Combine Harvester sales have grown exponentially from 2500 units in 2009, to 12380 in 2010 and 54,230 in 2011.

So how does it affect us? Paddy, when harvested by hand, is cut close to the ground. However, decreasing labour supply, increasing wages and factors like subsidies have led to higher harvester sales. Combine harvesters, while faster than human labour, leave more crop residue. There are better machines but their usage is low.


An unintentional affect of a Government Policy: Paddy has a cultivation period of 120 days between sowing and harvesting. Before 2009, the farmers used to sow Paddy in April, and harvest in August. The next crop cycle is of Wheat. Sowing of Wheat starts towards end of October. Any delays into November has a steep negative impact on the yield. Till 2009, farmers had a good 2 months time (August to October) between the two cropping seasons. So what changed?

Punjab Preservation of Subsoil Water Act was passed in 2009. According to this Act, farmers can no longer sow rice in April, but have to wait until the middle of June (the notified dates) to do so. Haryana too has followed Punjab, and passed a similar law. So the paddy sowing and harvesting cycle has been artificially shifted by about 2 months. Since 2009, farmers have only 15 days to ready their land for wheat sowing.

How can you help?


Solving a problem requires two things.
1. Awareness that a problem exists, and
2. Knowledge of the root causes of the problem.

We believe that creating an awareness about pollution and its root causes is important. If the primary sources of year-long pollution remain unsolved, we have the risk of only targeting the sources that are temporary in nature like Paddy (only 15 days a year), and our cities will still be having higher levels of pollution throughout the rest of the year. So, how can you help? For the start, one small but impactful action you can take is to Share this Insight with your network using one of the icons alongside. The more people are aware about the real causes of pollution and their nature and magnitude, the better chances of right actions being taken. So, go ahead and share.
– MEF Research

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