Which wind system is NOT a part of global wind patterns?

Local land breezes are not considered part of the global wind patterns. Instead, they represent localized wind phenomena that occur in specific areas, primarily near coastlines. Land breezes arise due to the differential heating of land and water. During the night, land cools faster than the water, causing the air over the land to cool and become denser, which leads to the movement of air from the land to the sea.

In contrast, trade winds, the jet stream, and prevailing westerlies are components of global wind circulation patterns that extend across large areas of the Earth's surface. Trade winds blow primarily in the tropics and are crucial for weather patterns across different regions. The jet stream is a high-altitude, fast-flowing air current that influences weather systems and is also part of the broader global circulation. Prevailing westerlies occur in mid-latitudes and generally blow from west to east, affecting weather patterns over larger distances.

Understanding these wind patterns helps to differentiate between global atmospheric processes and local phenomena like land breezes.