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Partially. The pressure difference between warm air near equator and cold air near arctic causes air to rise at equator travel north to arctic then down and south back to equator. The rotation of the earth bends that north-south belt - faster at the equator than at the slower rotation at arctic. The result of both is the jet stream.
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Fast moving currents of air found near the top of the troposphere are called?
Jet streams. They are high altitude bands of fast-moving air that flow from west to east in the upper troposphere and lower stratosphere. Jet streams are driven by a combination of temperature gradients, the Earth's rotation, and atmospheric pressure differences.
What is the origin of the jet streams?
Jet streams originate from the combination of the Earth's rotation and the uneven heating of its surface by the sun. These fast-flowing air currents form at the boundaries of different air masses, particularly between polar and tropical regions, where temperature gradients are strongest. The Coriolis effect, resulting from the Earth's rotation, helps shape and direct these streams. Jet streams typically occur in the upper levels of the atmosphere, influencing weather patterns and systems.
How many jet streams are there on earth?
There are typically four jet streams on Earth: two in each hemisphere. These are the polar jet streams and the subtropical jet streams. Polar jet streams are found closer to the poles, while subtropical jet streams are located closer to the equator.
How does Earth's rotation affect the direction of the jet streams?
Earth's rotation, known as the Coriolis effect, influences the direction of the jet stream by causing it to meander from west to east in the upper atmosphere. This effect results in the jet stream following a wavy, meandering path as it travels around the globe.
Why does a jet stream curve and bend?
Think about it this way. If it was flat then jet streams would be straight. But the Earth is round so jet streams are curved because of the curvature of the Earth.
What cause of rotation of earth?
The rotation of the Earth is primarily the result of its initial spin and angular momentum created during its formation. This rotational motion has been maintained over billions of years due to the conservation of angular momentum, with minor adjustments caused by factors like tidal interactions with the Moon and the Sun.
How many jet streams are there total on earth?
There are typically six jet streams on Earth: three in each hemisphere. The strongest and most well-known ones are the polar jet streams and the subtropical jet streams. These high-altitude, fast-flowing air currents have a significant impact on weather patterns.
Where are jet streams located?
Jet streams are fast flowing, narrow, meandering air currents in the atmospheres of some planets, including Earth. On Earth, the main jet streams are located near the altitude of the tropopause and are westerly winds (flowing west to east).
What is the polar jet stream?
The northernmost (and/or southernmost) of the various jet streams that circle the Earth.
Which statement is true of jet streams?
Jet streams are fast, narrow air currents in the atmosphere, typically found at high altitudes between 7 and 12 kilometers. They flow from west to east due to the Earth's rotation. Jet streams play a significant role in shaping weather patterns and can influence the movement of storms.
What makes the curved shape of the Jet Stream?
The curved shape of the jet stream is primarily influenced by the Earth's rotation and the temperature differences between air masses. The Coriolis effect, caused by the Earth's rotation, leads to the jet stream following a meandering path at high altitudes. Additionally, temperature contrasts between warm and cold air masses can create areas of low and high pressure, which further shapes the jet stream pattern.
What causes jet streams to blow?
Jet streams are fast moving belts of wind high in the atmosphere- there are two of them in the hemisphere, with the Polar Jet being the stronger of the two. The reasons for its existence are twofold: one being the rotation of the Earth causes angular momentum to be transported to higher latitudes whereupon it is basically "released" and returned to the Earth via the jet stream. The subtropical jet stream owes its existence to this as well as the mechanism of this momentum transport from the Tropics - via large-scale eddies in the atmosphere (largely, the Hadley Cell). The eddy flux of zonal (west-east) momentum peaks at about the tropopause level at 35 degrees latitude, where it is poleward in both hemispheres and strongest in winter.
