January dew point temperatures are extremely low in northern areas of the United States because
A)there is an abundance of insolation to drive the condensation.
B)of the presence of frequent midlatitude cyclones.
C)there is little insolation to drive the evaporation.
D)relative humidity values are uniformly high.

Question

Quizplus · Accepted Answer

Dew point temperature is the temperature at which air becomes saturated with water vapor and condensation occurs. In January, northern areas of the U.S. receive less insolation (sunlight) and have lower temperatures, leading to less evaporation and lower moisture in the air. Therefore, the dew point temperature is low because there is little insolation to drive the evaporation.

January Dew Point Temperatures Are Extremely Low in Northern Areas