Continental Airline Tickets

Why in winter do continental polar air modifies more rapidly when travailing of bare ground then snow ground?

Public Comments

1. It has to do with how air is warmed. The Sun does not warm the air much, but instead warms the ground as the ground absorbs the solar radiation. Different surfaces absorb different amounts of solar radiation, with snow/ice being a poor absorber/excellent reflector as opposed to bare ground. The air is warmed based on how much the adjacent ground warms.
2. This is strange because the way I've been taught is that it wouldn't be modified more over the snow ground because snow (as the meteorologist said) doesn't absorb heat to radiate. In this case the bare ground would release more radiation than the snow and affect the air mass.