Equation For Parameter Including Wind Velocity And Saturation Deficit Calculator

Equation For Parameter Including Wind Velocity And Saturation Deficit:

\[ Ea = 0.35 \times (1 + \frac{Wv}{160}) \times (es - ea) \]

Mean Wind Velocity (Wv):

m/s

Saturation Vapour Pressure (es):

mm Hg

Actual Vapour Pressure (ea):

mm Hg

Actual Mean Vapor Pressure (Ea):

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1. What is the Equation For Parameter Including Wind Velocity And Saturation Deficit?

The Equation For Parameter Including Wind Velocity And Saturation Deficit calculates the actual mean vapor pressure, which is the vapor pressure exerted by the water in the air, taking into account wind velocity and the difference between saturation and actual vapor pressure.

2. How Does the Calculator Work?

The calculator uses the equation:

\[ Ea = 0.35 \times (1 + \frac{Wv}{160}) \times (es - ea) \]

Where:

\( Ea \) — Actual Mean Vapor Pressure (mm Hg)
\( Wv \) — Mean Wind Velocity (m/s)
\( es \) — Saturation Vapour Pressure (mm Hg)
\( ea \) — Actual Vapour Pressure (mm Hg)

Explanation: The equation accounts for the effect of wind velocity on vapor pressure and the saturation deficit in the atmosphere.

3. Importance of Actual Mean Vapor Pressure Calculation

Details: Accurate calculation of actual mean vapor pressure is crucial for meteorological studies, evaporation estimation, and understanding atmospheric moisture conditions.

4. Using the Calculator

Tips: Enter mean wind velocity in m/s, saturation vapor pressure in mm Hg, and actual vapor pressure in mm Hg. All values must be valid non-negative numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of the 0.35 coefficient?
A: The 0.35 coefficient is an empirical constant that scales the equation based on experimental data and atmospheric conditions.

Q2: Why is wind velocity divided by 160?
A: The division by 160 normalizes the wind velocity effect, making it a dimensionless ratio that appropriately scales the wind's influence on vapor pressure.

Q3: What units should be used for input values?
A: Wind velocity should be in meters per second (m/s), and both vapor pressures should be in millimeters of mercury (mm Hg).

Q4: Are there limitations to this equation?
A: This equation is an empirical approximation and may have limitations under extreme weather conditions or in specific geographical locations.

Q5: How accurate is this calculation for practical applications?
A: The equation provides a reasonable estimate for many meteorological applications, but for precise measurements, direct instrumentation may be required.