Hayat Ashraf

The jet stream is a high-speed, narrow air current found in the upper levels of the atmosphere, typically at altitudes between 9 to 16 kilometers (30,000 to 52,000 feet). It is characterized by strong winds that blow predominantly from west to east in a meandering, wavy pattern. Here are some key features and characteristics of the jet stream: Formation: The jet stream forms due to the large temperature contrasts between air masses in the mid-latitudes, particularly between cold polar air and warmer subtropical air. The interaction of these contrasting air masses sets up a strong pressure gradient, which drives the high-speed winds. Polar Jet Stream: The primary and most well-known jet stream is the polar jet stream. It occurs at higher latitudes, usually between 30 and 60 degrees in both the Northern and Southern Hemispheres. The polar jet stream is influenced by the temperature differences between the cold polar regions and the relatively warmer mid-latitudes. Subtropical Jet Stream:...