Exam 10: Wind - Global Systems

At Barrow, Alaska (latitude 70°N), you would expect the prevailing wind to be​

On a weather map of the Northern Hemisphere, one would observe the westerlies​

The jet stream that forms in summer near the tropopause above Southeast Asia, India, and Africa is known as the ____ jet stream.​

The ____ jet is known to show seasonal variations. In winter, the winds are stronger and the jet moves farther south as the leading edge of the cold air can extend into subtropical regions, as far south as Florida and Mexico. In summer, the jet is weaker and is usually found over more northerly latitudes.​

Straight-line momentum-called ____________________-is the product of the mass of the object times its velocity.​

At any given time, only one jet stream can be found in the atmosphere.

You are given an upper-level map that shows the position of two jet streams. You would be able to tell which is which, because the subtropical jet stream forms to the ____________________ of the polar-front jet.​

The Southern Hemisphere has ____________________ semipermanent lows than the Northern Hemisphere.​

Why is the single cell model of the general circulation not an accurate description of the actual circulation of the atmosphere?​

During the warm (or positive) phase of the Pacific Decadal Oscillation, unusually cold surface water exists along the west coast of North America, whereas over the central North Pacific, warmer-than-normal surface water prevails.

The north-south temperature contrast along the polar front is strongest in ____ and weakest in ____.​

The low-level jet that forms over the Central Plains of the United States in the summer appears to be responsible for​

Generally, in the Northern Hemisphere during July, we would expect to find the tropical easterly jet stream​

If Earth's surface was homogeneous (either all land or all water),​

A condition where the central and eastern tropical Pacific Ocean turns cooler than normal is called​

Not all jet streams form at the tropopause.

The ____________________ is a boundary separating cold polar air to the north from warm subtropical air to the south, the greatest contrast in air temperature occurs along the ____________________.​

The subtropical jet stream is usually found between​

On a weather map of the Northern Hemisphere, the trade winds would be observed​

An increase in either the mass or the velocity (or both) produces a decrease in momentum.