On average, the total weight of the atmospheric mass exerts a pressure at sea level of around 1.0 × 10 5 pascals (Pa; or one atmosphere), which is equivalent to 1.0 kg per cm 2 . The density of the at...On average, the total weight of the atmospheric mass exerts a pressure at sea level of around 1.0 × 10 5 pascals (Pa; or one atmosphere), which is equivalent to 1.0 kg per cm 2 . The density of the atmospheric mass is much greater close to the surface and decreases rapidly with increasing altitude.
