Fog/Stratus/VisibilityQuestions
Question 1
When does the peak frequency of fog/low stratus occur in the Arctic? (Choose the best answer.)
The correct answer is c) "summer."
In summer, moisture is abundant and temperature gradients are strong, particularly along the coast.
Question 2
Match the type of fog to the mechanism of formation. (Use the selection box to choose the answer that best completes the statement.)
a) Warm moist air passes over a cold surface matches "Advection Fog".
b) Cold dry air passes over warm water matches "Steam Fog".
c) Water vapor suspended in air freezes matches "Ice Fog".
Question 3
Which of the following factors most hampers fog forecasting in the Arctic? (Choose the best answer.)
The correct answer is a) "Dearth of observations."
Very few weather observations are made in the Arctic, and even fewer soundings are taken. The Arctic region is covered by global weather models, in addition to some Arctic–specific mesoscale models. And while geostationary satellite fail to adequately image the Arctic, polar-orbiting satellites provide frequent images at high latitudes.
Question 4
Use the selection boxes to choose the answers that best complete the statements.
The correct answer is warmer.
Due to the strong inversion, the top of the cloud or fog will be warmer than the surface.