Visibility

Question 1

Factors affecting visibility

Answer 1

• Clouds
• Haze
• Fog
  – Advection Fog
  – Radiation Fog

Question 2

Advection fog

Answer 2

Advection fog forms when warm, moist air moves horizontally over a cooler surface, causing the air to cool to its dew point and condense into fog. This type of fog is common in coastal areas and can persist for several days.

Question 3

Radiation fog

Answer 3

Radiation fog forms at night under clear skies and calm winds when the earth’s warm moist surface cools, causing the air near the ground to cool to its dew point, leading to condensation and fog formation.