What is the standard lapse rate in terms of temperature?

The standard lapse rate defines how temperature changes with altitude in the troposphere, which is the lowest layer of Earth's atmosphere. The correct answer indicates that, under standard atmospheric conditions, the temperature decreases by approximately 2°C for every 1,000 feet of increased altitude.

This temperature decrease occurs because, as you ascend in the atmosphere, there is less air above you, resulting in lower atmospheric pressure and consequently lower temperatures due to the expansion of air as it rises. This is crucial for understanding various aerospace physiology concepts such as how temperature changes can affect flight performance and the comfort of personnel in high-altitude flight environments.

In practical applications, knowledge of the standard lapse rate helps pilots and aviation personnel make better decisions about altitude and performance, as well as understanding weather patterns. Therefore, being familiar with the standard lapse rate, especially the widely accepted rate of about 2°C per 1,000 feet, is essential for anyone studying aerospace physiology or engaged in flight operations.