Question

how low temperature pollutes air​

Answer 1

Answer:

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Explanation:

Temperature, Sunlight, and Humidity. Air temperature affects the movement of air, and thus the movement of air pollution. ... The warmer, lighter air at the surface rises and the cooler, heavier air in the upper troposphere sinks. This is known as convection and it moves pollutants from the ground to higher altitudes.

Answer 2

Answer:

When the weather is cold, exhaust from vehicles, chimneys, and smokestacks is more visible. Does this mean that there are more pollutants in the air, or just that the warm vapor exhaust is more visible? Typically, both are true. While industrial emissions remain mostly constant throughout the year, particulate matter and carbon monoxide pollutants from wood burning increases during the cold winter months. Idling cars to defrost or keep them warm increases the amount of air pollution as well.

Typically warm, rising air near the ground lifts pollution away, but during the winter the layer of warm air acts as a lid keeping cold air at the surface. This creates a thermal inversion, which forms when a layer of warm air above traps cool air and pollution close to the ground. Thermal inversions are more common above cities where cold, dense air gets trapped in mountain basins or valleys, such as Los Angeles, Denver, and Mexico City.

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