Which statement best describes the vertical sequence of temperature in a typical atmospheric inversion from the surface upward?

Which statement best describes the vertical sequence of temperature in a typical atmospheric inversion from the surface upward?

• A. Temperature increases with height through the inversion layer
• B. Temperature decreases with height through the inversion layer
• C. Temperature remains constant with height
• D. Temperature oscillates with height

Answer: (A)

An atmospheric inversion is a layer where the air near the surface is cooler than the air above it, so as you move upward through that layer, temperature actually increases. This reversal from the usual cooling with height creates a stable condition that traps pollutants near the ground, because vertical mixing is suppressed. Inversions commonly form when the surface cools quickly at night while the air above remains relatively warm, or when sinking air compresses and warms aloft. Outside the inversion layer, the normal pattern—temperature decreasing with height—returns. The other patterns don’t describe what's happening inside an inversion: a decrease with height would be the usual lapse rate, a constant temperature would show no gradient, and oscillation with height isn’t characteristic of a single inversion layer.

An atmospheric inversion is a layer where the air near the surface is cooler than the air above it, so as you move upward through that layer, temperature actually increases. This reversal from the usual cooling with height creates a stable condition that traps pollutants near the ground, because vertical mixing is suppressed. Inversions commonly form when the surface cools quickly at night while the air above remains relatively warm, or when sinking air compresses and warms aloft. Outside the inversion layer, the normal pattern—temperature decreasing with height—returns. The other patterns don’t describe what's happening inside an inversion: a decrease with height would be the usual lapse rate, a constant temperature would show no gradient, and oscillation with height isn’t characteristic of a single inversion layer.