Delhi Pollution: Odd even scheme starts, yet Delhi continues to remain a gas chamber

November 4, 2019 11:09 AM |

Delhi Pollution

Right after Diwali, Delhi and NCR have been witnessing one of the worst Air Quality of this season. On November 2, many areas of Delhi and NCR recorded hazardous Air Quality Index (AQI) levels wherein PM 2.5 crossed the mark of 1000. Although pollution levels have lowered today still AQI is around 588.

Yesterday evening the AQI crossed the 700 mark. The winds picked up pace from the evening of November 2, but they failed to decrease the pollution. Various reasons can be linked to the same. On November 2, patchy rains were seen over parts of Haryana, Rajasthan, and Delhi –NCR.

These rains were not heavy, continuous in nature and were not a widespread activity. Therefore, they failed to wash away the pollutants. On the other hand, these rains increased the humidity levels that have resulted in the formation of shallow fog. Low visibility due to smog at the Delhi airport led to a diversion of 37 flights.

The pollutants mixed with shallow fog and helped in the formation of smog. And this layer of smog remained in the lower levels near the earth's surface. From the past two to three days, the cloudy sky was a sight with medium and high clouds. These clouds restricted the sun rays, moreover, the layer of smog further obstructed the sun’s insulation to reach the earth's surface. Lack of sun rays resulted in cooling down the earth's surface which did not allow the air or layer of smog near the earth's surface to heat up. Hence, this cool air remained trapped near the earth's surface. Usually, the air rises when it heats up, but this wasn’t the case. As per our experts, moderate westerlies and north westerlies will continue until tomorrow. These moderate winds will help in reducing pollution to some extent. It seems that most of the places will still witness pollution levels in the ‘severe to very severe’ category only.

The odd-even scheme in the national capital kicked in from 8 am today as pollution levels peaked to a three-year high in the Capital and a thick smog enveloped the city.

In order to curb pollution, Delhi Chief Minister Arvind Kejriwal on Monday urged citizens to support the odd-even vehicle rationing scheme, in which only even-numbered non-transport vehicles allowed on Delhi roads on the first day of the exercise.

Under the scheme, which will be implemented from 8 am to 8 pm till November 15, non-transport four-wheeled vehicles with registration numbers ending with an odd digit (1, 3, 5, 7, 9) will not be allowed on the roads on November 4, 6, 8, 12 and 14. Similarly, vehicles with registration numbers ending with an even digit (0, 2, 4, 6, 8) will not be allowed on the roads on November 5, 7, 9, 11, 13 and 15.

The good news is that the rains are expected to commence over the Northwestern Plains especially over Punjab, parts of Haryana and West Rajasthan on November 6. By November 7, many parts of Haryana, East Rajasthan as well as Delhi and NCR will witness rain and thundershower activities. It is likely to be a widespread activity with light to moderate showers in sight.

These rains will be due to the interaction of a Western Disturbance and the influence of Cyclone Maha and it will reach the Gujarat coast. Due to this, humid winds will reach up to Northwest India.

Thus, we can say that significant relief in pollution levels is foreseen in wake of the upcoming rains. Till then Delhiites will continue to inhale toxic air.

Image Credits – The Indian Express

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