Sentences with phrase «rising air column»
An AVE with a diameter of 200 meters (m) and a height of 50 m to 100 m would produce a rising air column (the vortex) with a diameter of 30 m extending up to 15 km into the atmosphere.
http://www.powermag.com/ Not exact matches
In the same process that occurs over Earth's deserts, the rising cells form spinning columns while cool air descends through the middle.
This is because terrestrial hurricanes form when an inflow of air along the ocean surface sops up moisture and rises in a halo of updrafts to create towering columns of rain clouds.
Habib explains that it would have been able to cross broad stretches of ocean by taking advantage of thermals (rising columns of air created over warmer - than - normal patches of ocean) to gain altitude, then gliding until it reached the next thermal.
These spinning columns of dirt can rise hundreds of feet in the air.
ACME: Launch Radio sounding balloon to investigate the water vapour in the air column rising up to the troposphere.
Simply put: There is less air within the column of air that rises upward from the surface.
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The oily vapour (carrying the «comforting messages») rises in a column of warm air above the diffuser.
Burnt orange glow observed in the crater of volcano and in thick column of ash rising nearly two miles into the air
Because contraction of the vortex tends to require faster rotation (conservation of angular momentum), which increases centrifugal acceleration, which opposes contraction, it becomes hard for air to flow in sideways to take the space of warmer air that is rising when the air is spinning; thus, a rising column of air can pull up on air from below.
As the waves rise, the air inside each column (above sea level) is compressed and forced out of a small opening at the top.
The Annual Mean graph shows there is slightly more CO2 near the ground... and levels decrease slightly until you reach 4 km... so it is back to the drawing board... either CO2 sinks because it is heavier than air and / or near ground CO2 doesn't heat up enough to rise in the air column.
The latter results from kinetic energy being converted to potential energy as warm air rises against the force of gravity in a convective column.
Stephen Wilde says: July 18, 2013 at 9:17 pm «The latter results from kinetic energy being converted to potential energy as warm air rises against the force of gravity in a convective column.»
The solar gain on those columns of air can provide up to a 100 degree Fahrenheit rise in temperature.
This rising column of air will soon cool down to the temperature of the surrounding air and stop rising unless condensation begins first.
A thunderstorm event might be best depicted as a run - away rising column of air that is becoming progressively warmer than the surrounding air as condensing water vapor yields its heat of vaporization until almost all water vapor has condensed out and then cooling at a rate of 9.8 deg C per 1000 meters, it eventually reaches a warmer layer of air and spreads out like smoke over a ceiling.
The rising arrows represent columns of air, but I believe the descending arrows represent, by in large, a more diffuse long - term circulation.
Each column of collector glazing has corrugated aluminum behind it, and as the air heats up, it rises naturally.
In a column of air under a gravitational field which, unlike our atmosphere, is in thermal isolation, the quicker molecules will tend to rise higher and lose some of that velocity (or energy) and the slower ones will fall and gain velocity.
That air would sink and then get pulled under the rising column of convection, adding more energy.
One interesting question is to what extent they fall in the rising column and to what extent the end up outside that in drier air where evaporation occurs rapidly and changes the properties of adjoining air.
What makes air rise from the surface when evaporation occurs is increased pressure horizontally which increases buoyancy of the less dense parcel by forcing it upward vertically for a reduction of pressure at the base of the column.
Thus condensation must result in an increase in surface pressure and if the rising column of fresh vapour rich air is continued then the descending column is displaced to an adjacent location as we see all the time in the real atmosphere.
People here are not distinguishing between localised pressure effects where one parcel of air abuts another and surface pressure effects as a result of a rising or descending column.
Stephen said, «What makes air rise from the surface when evaporation occurs is increased pressure horizontally which increases buoyancy of the less dense parcel by forcing it upward vertically for a reduction of pressure at the base of the column.»
Thus there would be no precipitation in the middle of a wide rising column of moist air.
The rising water compresses the air column above it.
As we get hotter, more megatons of water evaporate and rise to the top of the air column, then condense dumping their heat high above the CO2 blocking level letting it rush to space.
Not only bubbles of methane rising off the sea bottom, but also methane «chimneys» - columns of potent methane gas that are strong enough that they don't break apart while journeying to the surface but rise straight up and burst into the air.