Exam 12: Middle-Latitude Cyclones

Temperature advection does not occur when the winds do not cross the isotherms.

Which of the following is one of the typical paths of a winter anticyclone in the United States?

A lee-side low forms ____.

During the March, 1993 storm off the coast of Texas, a region of ____ air in the upper air above the storm caused the rapid decrease of surface pressure, leading to the development of a wave cyclone.

Why is it important to locate and follow the movements of atmospheric shortwaves?

How can shortwaves be identified and followed on 500 mb charts?

In the polar front theory of a developing wave cyclone, energy for the storm is usually derived from an increase in surface winds, rising of warm air and sinking of cold air, and latent heat of condensation.

Aloft, waves are a fundamental feature of an unevenly heated, rotating sphere, such as Earth.

Developing low pressure areas in mid-latitude cyclones generally have ____________________ air near the surface and ____________________ air aloft.

Like hurricanes, polar lows have a clear area in their center.

Storms that form over polar water behind (or poleward of)the main polar front are called ____.

Strong storms that develop over water, poleward of the polar front, are called ____.

Compare shortwaves and long waves.

Polar lows form most often during the ____.

Outline the conveyor belt model.

When an upper-level low lies directly above a surface low, ____.

Which statement about vorticity is least accurate?

When a shortwave disturbs a longwave trough that lies parallel to and directly above a stationary front, the rising of warm air and the sinking of cold air establishes a condition known as ____________________.

In a mid-latitude cyclone, the warm sector is located ____.

The planetary vorticity of an air parcel moving from low toward high latitude in the Northern Hemisphere will ____.