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Role of Jet Stream Video Lecture | Geography for UPSC CSE
FAQs on Role of Jet Stream Video Lecture - Geography for UPSC CSE
| 1. What is a jet stream and how does it form? |  |
Ans.A jet stream is a fast-flowing, narrow air current in the atmosphere, typically found at altitudes of 6 to 12 kilometers (20,000 to 40,000 feet). It forms due to the temperature differences between polar and tropical regions, which create pressure gradients. As warm air rises and cold air sinks, the resulting airflow creates these high-speed winds.
| 2. What are the main types of jet streams? | |
Ans.The main types of jet streams are the polar jet stream and the subtropical jet stream. The polar jet stream occurs at higher latitudes and is associated with cold air masses, while the subtropical jet stream is found at lower latitudes and is linked to warm air. Both play significant roles in weather patterns and systems.
| 3. How do jet streams affect weather patterns? | |
Ans.Jet streams influence weather patterns by steering weather systems, such as storms and high-pressure areas. They can cause changes in temperature and precipitation by transporting air masses of different temperatures and moisture levels. For instance, when a jet stream dips southward, it can lead to colder weather and increased precipitation in affected regions.
| 4. Can jet streams impact aviation? | |
Ans.Yes, jet streams can significantly impact aviation by affecting flight times and fuel efficiency. Pilots often take advantage of tailwinds from jet streams to reduce flight duration, while headwinds can increase travel time and fuel consumption. Understanding jet streams is crucial for flight planning to optimize routes and ensure safety.
| 5. How do jet streams change with the seasons? | |
Ans.Jet streams change with the seasons due to variations in temperature and atmospheric pressure. In winter, the polar jet stream typically moves further south, bringing colder air and stormy weather to mid-latitudes. In summer, it shifts northward, resulting in milder weather. These seasonal shifts are important for predicting weather changes throughout the year.
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