An atmospheric inversion occurs when ambient air temperature is cooler near the ground than at elevation. true or false?

An atmospheric inversion occurs when ambient air temperature is cooler near the ground than at elevation. true or false?

• A. Ambient air temperature is warmer near the ground than at higher elevations.
• B. Ambient air temperature is cooler near the ground than at higher elevations.
• C. The plume remains buoyant regardless of the temperature gradient.
• D. The ambient temperature gradient matches the moist adiabatic rate.

Answer: (B)

An atmospheric inversion is a situation where temperature increases with height over a layer, creating stability and preventing vertical mixing. The statement is true because cooler air at the ground with warmer air above it means the temperature rises with elevation, opposite to the usual lapse rate. This stable layer can trap pollutants and keep plumes from rising freely, which is a hallmark of an inversion. The other options don’t fit because they describe warmer surface conditions, continuous buoyancy of a plume regardless of the gradient, or a specific gradient alignment with the moist adiabatic rate, none of which define an inversion.

An atmospheric inversion is a situation where temperature increases with height over a layer, creating stability and preventing vertical mixing. The statement is true because cooler air at the ground with warmer air above it means the temperature rises with elevation, opposite to the usual lapse rate. This stable layer can trap pollutants and keep plumes from rising freely, which is a hallmark of an inversion. The other options don’t fit because they describe warmer surface conditions, continuous buoyancy of a plume regardless of the gradient, or a specific gradient alignment with the moist adiabatic rate, none of which define an inversion.