What is the standard temperature lapse rate?

The standard temperature lapse rate is defined as the rate at which temperature decreases with an increase in altitude in the troposphere. This rate is typically set at approximately 6.5 degrees Celsius for every 1000 meters (or about 2 degrees Celsius per 1000 feet) in practical applications. Therefore, saying that the lapse rate is 2 degrees Celsius per 1000 feet aligns with the standard model used in aviation and meteorology.

This understanding is crucial for flight planning and operations, as it influences aircraft performance, weather prediction, and altitude-related considerations. The lapse rate provides valuable information for dispatchers and pilots regarding the expected temperature at various flight altitudes, which affects fuel consumption, aircraft weight limitations, and overall safety during flight operations.