What does a "frost pocket" refer to?

A "frost pocket" refers specifically to a local spot that is protected from wind, which can contribute to a lower temperature in that area. This phenomenon occurs because cold air is denser than warm air, and it tends to settle in low-lying areas, especially where there is protection from wind. As a result, these areas can experience frost formation even when surrounding regions do not, due to the lack of airflow that would otherwise help to moderate temperature.

The surrounding topography, such as trees or buildings, can provide that protection from wind, helping to create microclimates where frost is more likely to form. Understanding this concept is crucial for agriculture and plant care, as it informs decisions about planting and cultivation in areas susceptible to late spring or early fall frosts.