1. What is Saturated Vapor Pressure?

Saturated 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.

2. How Does the Calculator Work?

The calculator uses the Magnus formula:

Where:

• \( e_s \) — Saturated vapor pressure (hPa)
• \( T \) — Temperature in degrees Celsius (°C)
• \( \exp \) — Exponential function

Explanation: This empirical formula provides an accurate approximation of saturated vapor pressure over water for meteorological applications.

3. Importance of Saturated Vapor Pressure

Details: Saturated vapor pressure is crucial in meteorology for calculating humidity, predicting fog formation, and understanding evaporation processes. It's also important in various engineering applications involving air conditioning and drying processes.

4. Using the Calculator

Tips: Enter the temperature in degrees Celsius. The calculator will compute the saturated vapor pressure in hectopascals (hPa).

5. Frequently Asked Questions (FAQ)

Q1: What is the range of validity for this formula?
A: The Magnus formula is valid for temperatures between -45°C and 60°C for calculations over water.

Q2: How does temperature affect saturated vapor pressure?
A: Saturated vapor pressure increases exponentially with temperature. Warmer air can hold significantly more water vapor than colder air.

Q3: What units are used for vapor pressure?
A: Vapor pressure is typically measured in hectopascals (hPa) or millibars (mb), which are equivalent (1 hPa = 1 mb).

Q4: How is this different from actual vapor pressure?
A: Saturated vapor pressure is the maximum possible vapor pressure at a given temperature, while actual vapor pressure is the current amount of water vapor in the air.

Q5: Why is 6.112 used in the formula?
A: 6.112 hPa is the saturated vapor pressure at 0°C, serving as the baseline constant in the Magnus formula.