is rising air generally high or low in pressure?

Question

i think it's low, but i'm not sure, and if it is does atmospheric pressure always decrease with increasing hight? i know upper winds are usually stronger than surface winds, is that a factor?

Answer 1

You are correct. For a given type of gas, the lower the pressure, the lighter it becomes per unit area, thus it will rise above all of that gas of higher pressure. Ever hear "heat rises"? This is consistent in that when you heat up a gas, it expands, so it density per unit area decreases (or pressure decreases), thus rises. The lightest gas, hydrogen, does not stay in our atmosphere because it is too light for our gravity to hold it. Unlike a place like Jupiter, whose gravitational pull is so great that it is a large mass of gases. And look at the moon, all gas, if there ever was any, has escaped. Also correct, the higher you go, the less pressure, as the bulk of heavier gases (including pollutants) tend to stay near the surface.

Answer 2

yeah right, its generally low in pressure.

i think best example would be : have you ever seen an Oil Rig and Platforms you'll always find a burning flame there, that is the gas which is at such low pressure that even professionals can't use it so it rises and escapes(get burnt in this case)

Answer 3

I believe it's low and that's why it's rising, it's being "pushed up" by higher pressure air.

Answer 4

I know when it's hot out.. Hot air rises. Don't think it matters what millibar your at..