Jet-stream
noun
1.
strong, generally westerly winds concentrated in a relatively narrow and shallow stream in the upper troposphere of the earth.
2.
similar strong winds in the atmosphere of another planet:
jet streams on Jupiter.
3.
the exhaust of a jet or rocket engine.
noun
1.
(meteorol) a narrow belt of high-altitude winds (about 12 000 metres high) moving east at high speeds and having an important effect on frontogenesis
2.
the jet of exhaust gases produced by a gas turbine, rocket motor, etc
jet stream
A narrow current of strong wind circling the Earth from west to east at altitudes of about 11 to 13 km (7 to 8 mi) above sea level. There are usually four distinct jet streams, two each in the Northern and Southern hemispheres. Jet stream wind speeds average 56 km (34 mi) per hour in the summer and 120 km (74 mi) in the winter. They are caused by significant differences in the temperatures of adjacent air masses. These differences occur where cold, polar air meets warmer, equatorial air, especially in the latitudes of the westerlies.
A narrow band of swiftly moving air found at very high altitudes.
Note: Movements of the jet stream have important (but generally short-lived) effects on weather patterns.
Note: Travel time in an airplane can be lengthened or shortened by the jet stream, depending on the direction of flight and the strength of the stream.
Read Also:
- Jetted
[jet] /dʒɛt/ noun 1. a stream of a liquid, gas, or small solid particles forcefully shooting forth from a nozzle, orifice, etc. 2. something that issues in such a stream, as water or gas. 3. a spout or nozzle for emitting liquid or gas: a gas jet. 4. . 5. . verb (used without object), […]
- Jettied
[jet-ee] /ˈdʒɛt i/ noun, plural jetties. 1. a pier or structure of stones, piles, or the like, projecting into the sea or other body of water to protect a harbor, deflect the current, etc. 2. a wharf or landing pier. 3. the piles or wooden structure protecting a pier. 4. Also, jutty. an overhang, as […]
- Jetting
[jet] /dʒɛt/ noun 1. a stream of a liquid, gas, or small solid particles forcefully shooting forth from a nozzle, orifice, etc. 2. something that issues in such a stream, as water or gas. 3. a spout or nozzle for emitting liquid or gas: a gas jet. 4. . 5. . verb (used without object), […]
- Jettison
[jet-uh-suh n, -zuh n] /ˈdʒɛt ə sən, -zən/ verb (used with object) 1. to cast (goods) overboard in order to lighten a vessel or aircraft or to improve its stability in an emergency. 2. to throw off (something) as an obstacle or burden; discard. 3. Cards. to discard (an unwanted card or cards). noun 4. […]
- Jettisonable
[jet-uh-suh n, -zuh n] /ˈdʒɛt ə sən, -zən/ verb (used with object) 1. to cast (goods) overboard in order to lighten a vessel or aircraft or to improve its stability in an emergency. 2. to throw off (something) as an obstacle or burden; discard. 3. Cards. to discard (an unwanted card or cards). noun 4. […]