static pressure

Static pressure is the force exerted by a fluid on a surface when the fluid is at rest relative to that surface. In physics, pressure is defined as the perpendicular force per unit area. This can be understood by considering atmospheric pressure, which is the weight of the atmosphere pressing down on Earth's surface, approximately 15 pounds per square inch at sea level.12

In meteorology and physics, pressure is measured in pascals (Pa) or kilopascals (kPa) in the International System of Units (SI). One pascal is equal to one newton per square meter. Atmospheric pressure at sea level is about 100,000 pascals, or 101.325 kPa. Pressures less than atmospheric are referred to as negative gauge pressures, indicating partial vacuums.32