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Jet Streams and its affect on Weather Video Lecture | Geography for UPSC CSE
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| 1. What is a jet stream and how does it affect weather? |  |
Ans. A jet stream is a narrow, fast-flowing air current found in the upper atmosphere. It moves in a wavy pattern from west to east. Jet streams play a crucial role in shaping weather patterns by influencing the movement and intensity of weather systems. They can bring storms, affect temperature patterns, and impact the speed of aircraft.
| 2. How do jet streams form? | |
Ans. Jet streams form due to the temperature differences between air masses. When there is a significant contrast in temperature, such as between polar and tropical air masses, it creates a pressure gradient. As air flows from high to low pressure, the Coriolis effect (caused by the Earth's rotation) deflects the wind, resulting in the formation of jet streams.
| 3. What are the different types of jet streams? | |
Ans. There are two main types of jet streams: the polar jet stream and the subtropical jet stream. The polar jet stream is stronger and found at higher latitudes, around 30,000-40,000 feet above the surface. The subtropical jet stream is weaker and found closer to the equator, around 20,000-30,000 feet above the surface.
| 4. How do jet streams affect the movement of weather systems? | |
Ans. Jet streams act as steering currents for weather systems. They can push weather systems, such as storms, along their path. If a weather system encounters a strong jet stream, it may be accelerated and move faster. Conversely, a weak or meandering jet stream can cause weather systems to stall or become more persistent.
| 5. Can jet streams influence local weather conditions? | |
Ans. Yes, jet streams can influence local weather conditions. When a jet stream dips southward, it can bring cold air from higher latitudes, leading to cooler temperatures and potential storms. Conversely, when a jet stream moves northward, it can allow warm air to flow into an area, resulting in higher temperatures. The position and strength of jet streams directly impact the weather conditions experienced at a particular location.
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Oct 25, 2024 Last updated |
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