Which of the following statements are true about aerosols in the atmosphere?

A. Aerosols include sea salts, fine soil, smoke, pollens, soot.
B. Aerosols in the air contribute to the various hues of red and orange at sunrise and sunset.
C. The concentration of aerosols is maximum in mesosphere.
D. Aerosols act as surfaces on which water vapor condenses.

Choose the correct answer from the options given below:

Correct option is C

The correct statements are:

• Aerosols include sea salts, fine soil, smoke, pollens, soot (A). Aerosols are solid or liquid particles suspended in the atmosphere, including a variety of substances such as sea salts, fine soil, and soot.
• Aerosols in the air contribute to the various hues of red and orange at sunrise and sunset (B). Aerosols scatter light, particularly during sunrise and sunset, contributing to the vivid colors observed.
• Aerosols act as surfaces on which water vapor condenses (D). Aerosols provide nucleation sites for water vapor to condense, leading to cloud formation and precipitation.

Information Booster:

1. Aerosols are tiny particles suspended in the atmosphere that play a critical role in atmospheric processes, including weather and climate patterns.
2. The scattering of light by aerosols leads to the color effects seen during sunrise and sunset. This is due to the shorter wavelengths of light being scattered away, leaving longer wavelengths (reds and oranges).
3. Mesosphere has a very low concentration of aerosols because it is the middle layer of the atmosphere and does not have the same level of atmospheric dust, sea salts, or pollutants found in the troposphere.
4. Aerosols also serve as surfaces for water vapor condensation, contributing to cloud formation and precipitation.

Additional Knowledge:

​The concentration of aerosols is maximum in mesosphere (C):Incorrect Answer. Aerosol concentrations are higher in the troposphere, not the mesosphere. The troposphere contains the majority of the Earth's weather systems and aerosols.​​