Sentences with phrase «polar jet stream»

If a weakening, slowing polar jet stream is causing weather patterns to stall, leading to extreme weather (7 July, p...

Cassini brought new detail to Saturn's mysterious hexagon - shaped polar jet stream, shown here from 2 million miles away.

Barbosa Aguiar and Read suggest that Saturn's north polar jet stream spins at a rate relative to the rest of the atmosphere that favors a six - sided figure, hence the hexagon.

The northern polar jet stream (it has a counterpart in the Southern Hemisphere) is driven partly by the temperature contrast between masses of icy air over the North Pole and warmer air near the equator.

Answer: N. Atlantic & Arctic atmospheric pressure — polar jet stream link.

The jet stream is short for «tropospheric polar jet stream,» and is a current of fast - moving air found in the area of the atmosphere where weather occurs and jets fly.

It was Francis who, with a colleague, proposed in 2012 that sea ice loss in the Arctic slows the polar jet stream, a band of air currents flowing above the northern and middle latitudes of Earth.

It's called the polar jet stream, and as it writhes eastward across the North American continent, it can bring storms in its wake or herald an unseasonable change in temperature — north of the jet stream lies cold, Arctic air, while to its south are warmer conditions.

In summer months the polar jet stream flows mostly across Canada.

Some scientists have suggested that the lower temperature gradient is weakening the winds that circle the globe, particularly the polar jet stream.

• One is that the cold air above the Laurentide Ice Sheet created a tremendous high pressure system that shifted the polar jet stream to the south, pushing the track followed by winter storms down into the Southwest, which had the effect of dramatically reducing the amount of rainfall in the Northwest while increasing it in the Southwest.

There was also a big bend in the polar jet stream.

The polar jet stream can be several miles deep and more than 100 miles wide, with the strongest winds typically 5 to 10 miles above the ground.

Changes in climate can cause the polar jet stream — the boundary between the cold North Pole air and the warm equatorial air — to migrate south, bringing with it cold, Arctic air.

With that said, the polar jet stream will remain well to the north in Canada through at least mid-week, rather far north for early May.

Although the theory is still being explored, teleconnections are thought to link land use to changes in the polar jet stream, the paths of tropical cyclones, and the frequencies and intensities of droughts, floods, heat waves, and other weather events.

When a weak or moderate El Niño system develops, it forces the southern jet stream farther north than usual, causing the jet stream to interact with the polar jet stream.

We find an equatorward shift of the polar jet stream, which is mostly as a result of loss of sea ice concentration.

Model biases are compared to biases in the sea surface temperature (SST) gradient, the polar jet stream, the Eady growth rate, and model resolution.

The polar jet stream, an air current whipping around the northern latitudes from west to east, also has contributed to the higher temperatures by bringing warm air from the lower latitudes north — while pushing the frigid air normally cloaking the North Pole over Siberia.

The idea, first outlined in a 2012 paper in Geophysical Research Letters, involves a narrow current of westerly winds that circumnavigates the top of the globe, called the polar jet stream.

If El Niño is a moderate or weak system, it can force the southern jet stream farther north than usual causing it to interact with the polar jet stream.

This will further impact the shape and incursion of the polar jet streams.

The polar jet stream and associated surface front that typically swings through the United States in late winter has been hovering close to the U.S. / Canada border, with intrusions of seasonally cold air into the central and eastern United States either absent or short - lived over the last few days.

The polar jet streams are narrow, fast - flowing rivers of wind high in the Earth's atmosphere that push cold and warm air masses around, playing an important role in determining the weather.

Climatologists say that changes in the jet streams are closely tied to global warming, especially the polar jet streams, because there is a great deal of evidence that the North and South poles are warming faster than the remainder of the planet.

Changes in climate can cause the polar jet stream — the boundary between the cold North Pole air and the warm equatorial air — to migrate south, bringing with it cold, Arctic air.

These ultra-long waves determine the path of the polar jet stream, which travels within the transitional zone between the tropopause and the Ferrel cell.

For example, the 2010 heat wave in Russia coincided with a large, stationary, long - lived peak in the polar jet stream.

Predicting the changes is a complicated business, but a recent study by Jennifer Francis and Stephen Vavrus made headway on the polar jet stream.

The interactions between the polar jet stream and the subtropical jet stream determine a large portion of the weather in the continental US For instance, California tends to get a very wet winter in an El Niño year.

While climate change does not affect Earth's tilt, it does have potential implications for many of the other factors that influence winter weather in the US, including Arctic sea ice, the polar jet stream, the polar vortex, and El Niño.

Earlier this year, climate scientist Marco Tedesco of Columbia University published data supporting an earlier proposal that the retreat of Arctic sea ice has disrupted the polar jet stream, causing weather systems to meander more slowly from west to east.

This is happening as Northern Hemisphere Winter transitions to Spring and as the polar jet stream appears to be reasserting itself a bit after a major polar vortex collapse event during February.