Consider the following statements:
Statement-I: The Jet Streams are the strong cores of upper-level westerly winds which follow a meandering path
Statement-II: The term ‘jet stream’ was first applied to high velocity upper-level winds during World War-11
How many of the statements given above are correct?
Options
AStatement-I and Statement-II both are correct.
BStatement-I is correct but Statement-II is incorrect
CStatement-I is incorrect but Statement-II is correct.
DStatement-I and Statement-II both are incorrect.
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Correct Answer
AStatement-I and Statement-II both are correct.
Model Answer
Jet Streams are powerful, narrow currents of upper-level westerly winds that follow a wavy or meandering path in the Earth's atmosphere. They are essential for influencing weather patterns and temperature distribution, with their position and strength varying based on the season and atmospheric conditions.
During World War II, pilots and meteorologists observed that aircraft flying at high altitudes experienced strong, fast-moving winds. These winds were later identified as jet streams.
The term "jet stream" was coined by American meteorologist Carl-Gustaf Rossby and his colleagues. Rossby and his team were researching these high-altitude winds, and the term became widely accepted.
Understanding jet streams was crucial for aviation during the war as pilots needed to account for these strong winds when planning long-distance flights. This understanding also helped in improving flight efficiency and safety.
Hence, both statements are correct.
Diagram titled Jet Stream showing a globe with polar and subtropical jet streams, noting that jet streams shift north and south and blow west to east in both hemispheres.
