How does it work? Atmospheric pressure is the force that air exerts on the earth's surface. It is measured in atmospheric pressure, millibars, or millimeters of mercury, with 760 mm of mercury being the value at sea level. Atmospheric pressure decreases with altitude, but not proportionally. Standard atmospheric pressure (standard atmospheric pressure), referred to as "atmospheric pressure". One of the units of pressure. When the temperature is 0°C (273.15 K), the acceleration due to gravity is 980.655 cm/s2 (that is, at sea level at the earth's latitude of 45°), so that. Atmospheric pressure, also known as atmospheric pressure, referred to as air pressure, refers to the weight of the atmospheric column per unit area. Meteorologically, it is often expressed in millibars or millimeters of the height of the mercury column.
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