Sentences with phrase «cold air mass»

Long story short, the polar vortex is the result of global warming changing the semi-permanent weather system over the arctic regions resulting in movement of cold air masses from the arctic region to parts of North America, such as Canada and, unfortunately, poor Buffalo.

Certainly the strength of thunderstorms and thermal columns increases with a higher lapse rate — a nice post-frontal day with a very cold air mass moving in over warm moist air on the ground makes for great hang glider flying and, yes, much more turbulent air.

[37][70] In the winter, cold air masses from the north reach the state, and can produce below freezing temperatures and high winds at night in the higher elevations, but the temperature can then jump back up to over 20C during the day.

The highest surface air pressures occur in the winter over Asia and North America where cold air masses form and become very deep.

According to NASA Goddard Institute of Space Studies, Kansas will be 4 degrees warmer in winter without Arctic ice, which regularly generates cold air masses that flow southward into the U.S. (You've probably heard weather forecasters say the following hundreds of times: People in the middle part of the country had better button up.

While an active area of research, new studies show that Arctic ice may also influence weather patterns around the world by creating cold air masses.

Because tornado propagation is sensitive to sheer wind and differences between warm and cold air masses meeting, tornado intensity and frequency may not increase in a warming world.

«The trough approaching from the west will inject into Sandy what is called «baroclinic» energy — the energy one can derive from the atmosphere when warm and cold air masses lie in close proximity to each other.

For a rope cloud to form, the leading edge of the cold air mass must be advancing straight and steady, which can happen only if it is flowing over a smooth, flat surface like the ocean.

These cold air masses often cause nor'easter s, winter storms that move up the Eastern Seaboard and dump massive amounts of snow on the East Coast, as with «Snowmageddon» in 2010.

Creating a supercell takes moisture, updraft, spin, and then the trigger — a boundary between hot and cold air masses.

The more intensive variations during glacial periods are due to the greater difference in temperature between the ice - covered polar regions and the Tropics, which produced a more dynamic exchange of warm and cold air masses.

Each spring, a cold air mass called the Siberian High swoops down on the Gobi and hoists soil particles into the atmosphere.

«The cold air mass helps to cool the warm and wet mass, causing significant precipitation at low levels,» explains Gascón, lead author of the study, who reiterates that this situation does not happen very frequently in winter.

Explain the thermal differences which will occur when: (a) an air mass has a maritime track; (b) a cold air mass moves over a warmer surface.

A cold air mass flowing away from its source region over a warmer surface will be warmed from below making the air more unstable in the lowest layers.

Snow cover can keep heat from escaping from the land, allowing the formation of cold air masses and limiting frost's penetration into the ground.

However, they tend to rearrange warm and cold air masses, and this latest one has also been linked not only to the Arctic warmth but also to the «Beast from the East» cold spell over Europe.

Storms, which are violent when there is a clash between warm and cold air masses, would be less frequent and less violent.

Depending on the depth and extent of the cold air mass, the overriding warm Atlantic air can cause different parts of the state to simultaneously experience rain, freezing ice, sleet and snow.

A frontal inversion occurs when a cold air mass undercuts a warm air mass and lifts it aloft; the front between the two air masses then has warm air above and cold air below.

If the jet stream dips south, for example, it takes the colder air masses with it.