What is latent heat of condensation and why is it important in precipitation processes?

• A. Latent heat is released when water vapour condenses into liquid water, warming the surrounding air and promoting uplift and heavy precipitation.
• B. Latent heat is absorbed when water vapour condenses, cooling the surrounding air.
• C. Latent heat is released during evaporation, warming the surface.
• D. Latent heat has no role in precipitation processes.

Answer: (A)

Latent heat of condensation is the energy released when water vapour changes into liquid water. That release warms the surrounding air. In the atmosphere, this added heat makes rising air parcels less prone to stop, boosting uplift and driving deep convection. As the air rises and cools, more moisture condenses, releasing even more latent heat in a feedback loop that sustains strong updrafts, clouds, and heavy rainfall. This energy source is a major reason storms can intensify and produce intense precipitation. It isn’t about condensation absorbing heat (it releases it), and evaporation actually requires energy from the surface, cooling it—so the idea that latent heat is released during evaporation is incorrect.