Consider the following statements with reference to frequently occurring ldquo smog rdquo episodes i...........

Geography Monsoons and Climate in India

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Consider the following statements with reference to frequently occurring “smog” episodes in urban areas of North India:

1. When the ‘mixing depth’ in the atmosphere is shallow, pollution gets enhanced.

2. Stronger winds in area enhance pollution.

Which of the statements given above is/are correct?

1 only

2 only

Both 1 and 2

Neither

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Explanation:

Explanation:
• The word “smog” was originally derived from the combination of the words smoke and fog.
• The atmospheric stability determines the extent to which vertical motions will mix the pollution with cleaner air above. The vertical distance between Earth’s surface and the height to which convectional movements extend is called the mixing depth. Generally, the greater the mixing depth, the better the air quality.
• The stronger the wind, the more turbulent the air. Thus, strong winds mix polluted air more rapidly with the surrounding air, thereby causing the pollution to decrease.