STASH Output


I was hoping to ask a few questions regarding STASH output. I require some time independent output data but I am not sure if time profile for this exists (specifically for land area fraction, surface altitude and cell area). Also, I can see there is a stash output for Grid Cell Volume m^3 in stash 50255 but not one for Cell Area. How would recommend getting the area of the grid cell out of the model (at the surface)?