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Saturation Vapor Pressure Equation:
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Saturation vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature. It represents the maximum amount of water vapor the air can hold at a specific temperature.
The calculator uses the saturation vapor pressure equation:
Where:
Explanation: This empirical formula approximates the relationship between temperature and the maximum water vapor pressure the air can hold.
Details: Saturation vapor pressure is crucial in meteorology for humidity calculations, weather forecasting, and understanding atmospheric processes. It's also important in various engineering applications involving air conditioning and drying processes.
Tips: Enter the temperature in degrees Celsius. The calculator will compute the saturation vapor pressure in hectopascals (hPa).
Q1: What units are used for saturation vapor pressure?
A: The result is given in hectopascals (hPa), which is equivalent to millibars (mb) in meteorological applications.
Q2: How does temperature affect saturation vapor pressure?
A: Saturation vapor pressure increases exponentially with temperature. Warmer air can hold significantly more water vapor than cooler air.
Q3: What is the relationship between saturation vapor pressure and relative humidity?
A: Relative humidity is the ratio of actual vapor pressure to saturation vapor pressure, expressed as a percentage.
Q4: Are there different formulas for calculating saturation vapor pressure?
A: Yes, there are several empirical formulas, with the Magnus formula (used here) being one of the most common for meteorological applications.
Q5: Why is 6.11 used in the formula?
A: The constant 6.11 hPa represents the saturation vapor pressure at 0°C, which serves as the reference point for this empirical relationship.