Sentences with phrase «vortex winds high»

Changes in polar vortex winds high in the stratosphere can alter the global conveyor belt of ocean circulation.

Not exact matches

Water heats more slowly than land, creating pressure differences that drive high - speed winds; fast - burning fires spawn flame - breathing vortices; the pressure waves of a plane on takeoff transform water into ice.

Colder temperatures and weaker high - altitude winds may make the arctic polar vortex even more intense in future winters and trigger greater ozone loss, says atmospheric scientist Paul Newman of NASA's Goddard Space Flight Center in Greenbelt, Maryland, although the losses probably won't approach those in Antarctica.

The model also predicts a radial flow, which sucks winds from the high - speed jet streams toward the vortex center.

Wind vortices blowing across the crater slowly formed a radial moat in the sediment, eventually leaving only the off - center Mount Sharp, a 3 - mile - high peak similar in height to the rim of the crater.

Material from both eruptions was unable to penetrate the Antarctic stratosphere at high altitudes last year because the eruptions occurred after the establishment of the winter vortex of circumpolar winds, which cuts off the upper stratosphere above Antarctica.

Normally, cold air is kept locked up in the Arctic by a spinning vortex of air bounded by fast winds high in the atmosphere called the jet stream.

This phenomenon, called von Kármán vortex shedding, affects any elongated structure caught in wind or water currents such as lampposts, high rises and the long vertical pipes used for drilling oil at sea.

For one thing there has been a noticeable expansion of the great belt of dry, high - altitude polar winds — the so - called circumpolar vortex — that sweep from west to east around the top and bottom of the world.»

It was determined that a major cause of changes in the size and extent of the Antarctic ozone hole are the intense wind patterns and circulations associated with the extensive Antarctic high - pressure zone and the surrounding wind pattern known as the Circumpolar Vortex.

«In winter, the freezing Arctic air is normally «locked» by strong circumpolar winds several tens of kilometers high in the atmosphere, known as the stratospheric polar vortex, so that the cold air is confined near the pole,» said study co-author Marlene Kretschmer from the Potsdam Institute of Climate Impacts Research in Germany, in a press release.

These are both complex phenomena, but a sudden stratospheric warming event typically occurs when energy from the lower atmosphere travels upwards, and this can disrupt the area of low pressure and high westerly winds that comprise the polar vortex.

At times of high winds speeds, the vortex may be «blown away» and de-stabilised but power would be adequate in any case.

If the wind field contains energy at the inertial frequency or higher (daily and six - hourly cases), then Vortex Rossby waves and near inertial waves are excited as ageostrophic expression of the vigorous eddy field.