Exam 12: Middle-Latitude Cyclones

When a surface low-pressure area with a deep upper-level trough is to the west, in which of the following directions will it tend to move?

Which conveyor belt is responsible for the comma head of a middle-latitude cyclone?

Which of the following is accurate regarding the development and intensification of a middle-latitude cyclone?

Describe with a sketch, a wind flow pattern that results in upper-level divergence.

On a 500 hPa chart, why does middle-latitude cyclone development occur beneath troughs rather than ridges?

Which of the following is the likely direction of movement of an upper-level trough that shows retrograde motion?

If a shortwave passes over your location, what kind of weather might be expected?

Which of the following is the name given to the piling up of air above a region?

Which of the following is a characteristic that polar lows share with hurricanes?

Which of the following locations is considered a region where cyclogenesis often occurs?

Which of the following terms refers to a small, moving disturbance embedded in a longwave?

In which of the following orders of measurement are the lengths of longwaves in the middle and upper troposphere usually described?

When making a weather forecast, which kind of chart is more important: a surface chart or a 500 hPa chart? Why?

What does the term "shortwave" refer to? Why is it important to locate and follow the movements of atmospheric shortwaves? How is this done? How is a shortwave different from a "longwave?"

According to the polar front theory of a developing wave cyclone, the energy for a storm is usually derived from several sources. Which of the following is one of the sources of energy for a storm?

Which of the following terms is used when a middle-latitude storm system develops or strengthens?

Consider an air parcel that moves from low to high latitude in the northern hemisphere. Which of the following describes what happens to the planetary vorticity?

In which of the following countries did the polar front theory of a developing wave cyclone originate?

Which of the following is an accurate statement about polar lows?

Which of the following conditions will occur when an upper-level low lies directly above a surface low?