Arctic CyclonesQuestions

Question 1

[True/False] The occurrence of Arctic cyclones correlates well with strong surface temperature gradients.

The correct answer is True.

Question 2

Use the selection boxes to choose the answers that best complete the statements.

The maximum occurrence of Arctic cyclones in winter occurs over the , while the summer maximum occurs over the .

The correct answer is the maximum occurrence of Arctic cyclones in winter occurs over the Norwegian Sea, while the summer maximum occurs over the North Pole.

Question 3

In the winter, cyclones that form over Eurasia tend to be steered in which direction? (Choose the best answer.)

The correct answer is c) "to the southeast."

500 mb heights over the Arctic show a large trough from the North Pole to Japan, which tends to steer cyclones to the southeast over Eurasia.

Question 4

In the summer, cyclones that form over Eurasia tend to be steered in which direction? (Choose the best answer.)

The correct answer is a) "to the East."

500-mb heights over the Arctic show have contours that run east-west. This takes cyclone parallel to the coast, tracking the strong temperature gradient there.

Question 5

Where do Polar Lows develop? (Choose the best answer.)

The correct answer is c) "Over water."

Polar Lows form where frigid Arctic air flows over a body of warmer water, which results in a strong flux of heat and moisture from sea to atmosphere, which destabilizes the lower atmosphere.