What is one effect of jet streams on weather patterns?

Jet streams are fast-flowing air currents located high in the atmosphere, typically found at the boundaries between different air masses. Their primary effect on weather patterns is significant because they influence both temperature and precipitation across various regions.

The position and strength of jet streams can steer weather systems, such as low and high pressures, guiding the path of storm systems and the movement of air masses. For instance, when a jet stream dips southward, it can bring colder air from the poles, causing temperature drops, while a jet stream positioned to the north can allow warm air to move into a region. Additionally, these currents can affect where precipitation falls by steering storm systems and moisture-laden air.

Thus, the role of jet streams in temperature and precipitation influences weather conditions globally and locally, making them a critical aspect of meteorology.