What is the temperature lapse rate in the troposphere according to the standard atmosphere?

In the standard atmosphere, the temperature lapse rate in the troposphere is defined as decreasing by approximately 6.5°C for every 1,000 feet of altitude gain. This rate indicates how temperature changes with elevation, with the troposphere being the lowest layer of Earth's atmosphere where weather occurs.

Focusing on the provided answer, the correct temperature lapse rate of -6.5°C per 1,000 feet reflects the general understanding of atmospheric behavior in the troposphere. This decrease is significant because it influences various aviation factors, such as aircraft performance, altitude selection for flight, and weather predictions.

Understanding this lapse rate is vital for pilots and meteorologists for operational planning and navigation, as it impacts temperature conditions, air density, and consequently, aircraft lift capabilities.