 Temperature gradient

The temperature gradient is the gradient $\nabla T$ of the temperature field. It points in the direction of fastest temperature increase.

The temperature gradient is a measure of how temperature changes with distance in a specific direction. It is essentially the rate at which temperature increases or decreases over a certain distance. The concept is important in various fields, including meteorology, geology, and engineering, as it can affect processes such as heat transfer, weather patterns, and geological phenomena.