What is sea level gauge pressure?

Sea level gauge pressure refers to the pressure measured relative to the atmospheric pressure at sea level. It is commonly used in various applications, such as meteorology and engineering, to express pressure measurements in a way that eliminates the influence of atmospheric pressure. This allows for a clearer understanding of the pressure exerted by fluids or gases in a system. The gauge pressure is typically expressed in units such as pascals (Pa) or pounds per square inch (psi).