What does the pressure gradient indicate?

The pressure gradient indicates the change in atmospheric pressure over a certain distance. It is crucial for understanding wind patterns and how air moves in the atmosphere. A steep pressure gradient, where pressure changes rapidly over a short distance, typically results in stronger winds, as air moves from areas of high pressure to areas of low pressure in an effort to equalize the pressure differences. This concept is foundational in meteorology as it helps in predicting weather conditions and understanding how winds will behave in various situations.

While changes in temperature, wind speed, or humidity are important meteorological factors, they are not what the pressure gradient specifically measures. The pressure gradient is solely concerned with how pressure varies across a spatial area, and this distinction is vital for correctly interpreting meteorological data.