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What typically indicates a temperature inversion?

  1. A decrease in temperature with altitude

  2. No change in temperature with altitude

  3. An increase in temperature with altitude

  4. A fluctuation of temperature with altitude

The correct answer is: An increase in temperature with altitude

A temperature inversion is characterized by an increase in temperature with altitude, which is contrary to the normal atmospheric conditions where temperature typically decreases as altitude increases. During a temperature inversion, a layer of warm air traps cooler air at the surface, often leading to stagnant weather conditions. This phenomenon can affect weather patterns, air quality, and can contribute to the formation of fog or low clouds beneath the inversion layer. Understanding temperature inversions is critical for various aspects of aviation, including flight planning and weather forecasting, as they can impact aircraft performance and safety.