What is the term for the rate at which pressure decreases with an increase in height?

The term that defines the rate at which pressure decreases with an increase in height is known as the Pressure Lapse Rate. This concept is fundamental in meteorology, as it describes how atmospheric pressure changes with altitude. As you ascend in the atmosphere, the weight of the air above decreases, leading to a reduction in pressure.

The Pressure Lapse Rate is typically expressed in terms of pressure change per unit of height, often in units like hPa per meter. Understanding this rate is crucial for various applications in meteorology, including weather forecasting, aircraft operations, and understanding the behavior of the atmosphere.

In comparison, Atmospheric Pressure Lapse Rate refers to a specific context of pressure changes in relation to temperature changes, while Temperature Gradient specifically addresses the change in temperature with height, and Density Gradient pertains to variations in air density rather than pressure. These distinctions highlight the importance of the Pressure Lapse Rate in understanding atmospheric dynamics and behavior.