Rain significantly affects air by cleansing it of pollutants and altering its temperature and humidity. As raindrops fall, they act as natural scrubbers, attracting and collecting various particles from the air.
Cleansing the Air
The primary way rain affects air is by removing pollutants. This process is known as coagulation.
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Coagulation: As a raindrop descends, it attracts and absorbs tiny aerosol particles, such as soot, sulfates, and organic particles, effectively cleaning the air. These particles are carried to the ground with the rain.
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Reduced Air Pollution: This cleansing action helps to reduce air pollution, improving air quality, particularly in urban and industrial areas.
Temperature and Humidity Changes
Rain also influences the temperature and humidity of the air.
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Cooling Effect: Rainwater absorbs heat from the air as it evaporates, leading to a cooling effect. This is especially noticeable after a heavy rainfall on a hot day.
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Increased Humidity: As rainwater evaporates, it increases the moisture content in the air, raising the humidity level. High humidity can make the air feel heavier and more uncomfortable.
Summary
In short, rain acts as a natural air purifier by removing pollutants and also influences air temperature and humidity.
