Consider the following statements:
1. During winter in Delhi, two winds collide – one blowing from Punjab and another from Uttar Pradesh
2. Temperature inversion can contribute to prolonged periods of photochemical smog
Which of the above statement(s) is/are correct?
Consider the following statements:
1. During winter in Delhi, two winds collide – one blowing from Punjab and another from Uttar Pradesh
2. Temperature inversion can contribute to prolonged periods of photochemical smog
Which of the above statement(s) is/are correct?
The correct option is C Both 1 and 2
In Delhi, there are two winds — one carrying pollutants from stubble burning in Punjab and the other bringing in moisture from Uttar Pradesh — that are colliding above the national capital. This, combined with the near-still wind conditions near the ground level, have effectively trapped the pollutants, leading to the smog.
In the context of air pollution situation currently in NCT:
“This stagnation occurs when there is an inversion layer in the atmosphere. An inversion layer refers to instances where the air does not cool as one moves up in the atmosphere,” it explained. “Instead, warmer air sits on top of denser, colder air near the ground. Since that cold air has no place to go thanks to the warm lid placed atop it, it just sits there gathering pollution like a hazy snow-globe,” NOAA said.
In Delhi, there are two winds — one carrying pollutants from stubble burning in Punjab and the other bringing in moisture from Uttar Pradesh — that are colliding above the national capital. This, combined with the near-still wind conditions near the ground level, have effectively trapped the pollutants, leading to the smog.
In the context of air pollution situation currently in NCT:
“This stagnation occurs when there is an inversion layer in the atmosphere. An inversion layer refers to instances where the air does not cool as one moves up in the atmosphere,” it explained. “Instead, warmer air sits on top of denser, colder air near the ground. Since that cold air has no place to go thanks to the warm lid placed atop it, it just sits there gathering pollution like a hazy snow-globe,” NOAA said.
