Sentences with phrase «cloud updraft»

The greater lesson: Cloud microphysics and cloud updraft dynamics interact with surface processes in very complex and unexpected ways which defy simple hypotheses.

One promising alternative is to represent clouds using models with grids that capture the cloud updrafts and downdrafts based on principles of conservation of momentum and energy.

Not exact matches

11 Roll clouds form when updrafts and downdrafts churn clouds into a long, spinning cylinder.

Water + seeds + updraft = clouds.

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.

Similar but larger particles are known to play a role in feeding powerful, fast - moving updrafts of air from the land surface to the atmosphere, creating the clouds that play a central role in the formation of water droplets that fall as rain.

The birds ride on the strong updrafts under cumulus clouds in the open ocean to gain altitude.

Unlike other birds, most of which avoid clouds because of their turbulence, frigatebirds seem to seek them out to ride on the strong updrafts under cumulus clouds in the open ocean to gain altitude.

Hailstones are produced by severe summer thunderstorms, when frozen water droplets are tossed within a cloud and accumulate bulk until they're too heavy for the updrafts to support.

If the column is snagged in a supercell updraft, funnel - shaped clouds form.

For nearly a century, scientists had assumed Jupiter's weather worked like Earth's, with light zones forming around updrafts just as white clouds condense around rising currents here.

«Almost all lightning occurs in clouds that have ice, and where there's a strong updraft.»

As the blaze burns, it generates updrafts that cool and condense, forming fluffy cumulus clouds.

These little droplets are especially light and so it is easier for them to rise to higher levels of the cloud on thermal updrafts.

As the updraft moves, it rotates; if the rotation grows sufficiently intense, the storm can evolve into a tornado or funnel cloud (a tornado whose bottom does not touch the ground).

Obviously the heaviest precipitation and strongest updrafts are on the northern side of the storm evidenced by the radar signature at the surface and strong in - cloud echoes extending to or through the tropopause.»

«Cloud - resolving model intercomparison of an MC3E squall line case: Part I - Convective updrafts.»

For example, Rimensberger's visualisations show how clouds form over Germany and change over time, how they are carried upwards by updrafts and then transported by winds in the troposphere more than 10 kilometres above the ground.

What this argument fails to consider is that the greater SST also produces a more vigorous updraft, so that the rising moist air has less time in which the collision / coalescence process can work before the air reaches the upper cloud layers where spontaneous ice nucleation takes place (at somewhere around -40 C, reached near the top of the troposphere).

This argument hinges on the contention that more water vapor means greater density of water droplets in the active rising updraft of the storm clouds.

The typical enhancement of rainfall and updraft motion in deep cumulus and cumulonimbus clouds within heavy raining meso - scale disturbance areas acts to increase the return flow mass subsidence in the surrounding broader clear and partly cloudy regions (Figure 8).

Then there's humidity averages, gradients, regional effects, cloud albedo, heat circulation in the atmosphere, winds, storms, updrafts, downdrafts, you name it.

In general, clouds with more ice, and thus lower brightness temperatures, are more likely to produce lightning and to have moderate to strong updrafts and precipitation.

Since the sun is almost never directly over head the shadow of the cloud would cool another piece of ground (not under the main updraft) that used to be heated by the sun.

In cumulonimbus clouds during conditions where graupels are repeatedly wetted and then injected back toward high altitudes by strong updrafts, very large graupels called hail result.

Kellogg sank RAND Corp's 1950s fallout prediction computer model by formulating it in terms of very wooden assumptions (a static mushroom cloud, with particles unaffected by the central updraft and the toroidal downdraft around the periphery), unlike the rival USNRDL «dynamic» or D - model of fallout, which allowed heavy particles to fallout while small ones were still rising.

Clouds are negative feedback driven nucleation points — when daytime clouds start to form the albedo causes further cooling beneath them and heat - engine thunderstorms form from the updrafts of warm wet air lofted up to the stratosphere to efficiently cool and spread, creating a local convective cell that pulls heat out of the ocean (or the moist land or air) and moves it to a cold reservoir.

Now, a rain drop remain buoyant until it reaches a certain size, and cloud with updrafts can have larger raindrops kept buoyant and rain rain may increase it's size falling.

At the top of the column where the updraft can go no higher then all the remaining vapour condenses out and the air containing the remains of the cloud then spreads out horizontally before starting to fall back towards the surface.

Cirrus clouds — high - altitude clouds of ice crystals — typically form as a byproduct of the life cycle of cumulus towers created by rising updrafts of heated, moist air.