Physics · Thermodynamics & Meteorology
Why does atmospheric condensation and subsequent precipitation occur when a parcel of air cools significantly below its fixed dew point?
- 1The air parcel undergoes rapid volumetric expansion, raising its absolute capacity to hold vapor
- 2The air parcel mechanically contracts and experiences localized adiabatic warming
- 3The maximum capacity of the air to hold water vapor decreases, forcing excess vapor to condense✓
- 4Water vapor undergoes a molecular phase change that makes it lighter than surrounding dry air
Correct answer
The maximum capacity of the air to hold water vapor decreases, forcing excess vapor to condense
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