Atmospheric pressure contributes to gravity?

Question

It's related to weight of the atmosphere per specific volume, and air pushes down on us, so i guess it does.

http://en.wikipedia.org/wiki/Atmospheric_pressure

It must act in one way or another, but not outwards and inwards.

Otherwise the forces would be opposed and neutralised, and we would not feel it. Underwater pressure is the same, and we feel crunched, not pulled towards the surface.

Hence I guess that pressure pushes us down.

Answer 1

No, atmospheric pressure acts in all directions. The weight of the atmosphere causes the pressure, but not the way it acts. Exactly the same as pumping up a balloon, the pressure acts equally.