The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elavation <span />
well saying that the sun dose create heat it wouldn't do as much
considering the fact that is it freezing there it would be like 20% heat from the sun and 80% cold im not sure if this helps
If the temperatures are increasing in a mountainous region, in order to be sure in that, the evidence can simply be obtained by the vegetation. The mountains tend to be warmer at the lower parts, and as the elevation increases, the temperature decreases. If it is a higher mountain, then we will see that there is certain type of vegetation in the lower parts, above it a belt of another vegetation type, above that one there's usually a belt of grasses, and the highest parts are usually with little to no vegetation. If the temperature increases though, then the vegetation from the bottom will start moving upwards, occupying larger portion, the second layer will move upwards as well, and the grasses will come around the top part of the mountain, with the barren part disappearing from the scene.