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Standard atmospheric pressure, often referred to as standard pressure, is a reference pressure defined by the International Organization for Standardization (ISO) as 101325 pascals (Pa). It is commonly used as a reference point for various scientific and engineering calculations. The term "standard pressure" is often used interchangeably with "standard atmosphere" or "atmosphere" (atm), which is approximately equal to 101325 Pa.
Standard pressure is the average atmospheric pressure at sea level at a temperature of 15 degrees Celsius.
Standard pressure is used in various fields, including meteorology, aviation, and engineering. In meteorology, it is
Standard pressure is also used in the definition of other units of pressure, such as the bar