Which of the following are the three individual components/dimensions best used to describe air motion on earth?

• A. A meridional component pointing south-to-north, a zonal component pointing north-to-east, a vertical upward component pointing from ground to sky
• B. A zonal component pointing south-to-north, a meridional component pointing west-to-east and downward component pointing from sky to ground
• C. A meridional component pointing north-to-south, a zonal component pointing east-to-south, a vertical upward component pointing from ground to sky
• D. A meridional component pointing south-to-north, a zonal component pointing west-to-east, a vertical upward component pointing from ground to sky