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Dalton-Type Equation Formula

GoMeyers formula (1915) Formula

GoRohwers formula (1931) Formula

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Lake Evaporation is a sensitive indicator of the hydrological response to climate change. Variability in annual lake evaporation is assumed to be controlled by the surface solar radiation. Check FAQs

E lake = K \cdot f u \cdot (e s - e a)

E_lake - Lake Evaporation?K - Coefficient?f_u - Wind Speed Correction Factor?e_s - Saturation Vapour Pressure?e_a - Actual Vapour Pressure?

Dalton-Type Equation Example

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Here is how the Dalton-Type Equation equation looks like with Values.

Here is how the Dalton-Type Equation equation looks like with Units.

Here is how the Dalton-Type Equation equation looks like.

12.359 = 0.5 \cdot 1.7 \cdot (17.54 - 3)

12.359 = 0.5 \cdot 1.7 \cdot (17.54mmHg - 3mmHg)

12.359 = 0.5 \cdot 1.7 \cdot (17.54 - 3)

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Dalton-Type Equation Solution

Follow our step by step solution on how to calculate Dalton-Type Equation?

FIRST Step Consider the formula

E lake = K \cdot f u \cdot (e s - e a)

Next Step Substitute values of Variables

∴

E lake = 0.5 \cdot 1.7 \cdot (17.54mmHg - 3mmHg)

Next Step Prepare to Evaluate

∴

E lake = 0.5 \cdot 1.7 \cdot (17.54 - 3)

LAST Step Evaluate

∴

E lake = 12.359

Dalton-Type Equation Formula Elements

Variables

Lake Evaporation

Lake Evaporation is a sensitive indicator of the hydrological response to climate change. Variability in annual lake evaporation is assumed to be controlled by the surface solar radiation.

Symbol: E_lake

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Lake Evaporation

Coefficient

The coefficient used in Dalton's Empirical equation.

Symbol: K

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Coefficient

Wind Speed Correction Factor

The wind speed correction factor used in Dalton's Empirical Equation.

Symbol: f_u

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Wind Speed Correction Factor

Saturation Vapour Pressure

Saturation Vapour Pressure at Water Surface (mm of mercury) is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature.

Symbol: e_s

Measurement: PressureUnit: mmHg

Note: Value can be positive or negative.

Formulas to find Saturation Vapour Pressure

Actual Vapour Pressure

Actual Vapour Pressure is the air in mm of mercury is the vapour pressure exerted by the water in the air.

Symbol: e_a

Measurement: PressureUnit: mmHg

Note: Value should be greater than 0.

Formulas to find Actual Vapour Pressure

Other Formulas to find Lake Evaporation

Go Meyers formula (1915)

E lake = K m \cdot (e s - e a) \cdot (1 + \frac{u 9}{16})

Go Rohwers formula (1931)

E lake = 0.771 \cdot (1.465 - 0.00073 \cdot P a) \cdot (0.44 + 0.0733 \cdot u 0) \cdot (e s - e a)

Other formulas in Evaporation category

Go Dalton's Law of Evaporation

E = K o \cdot (e s - e a)

Go Vapour Pressure of Water at given Temperature for Evaporation in Water Bodies

e s = (\frac{E}{K o}) + e a

Go Vapour Pressure of Air using Dalton's Law

e a = e s - (\frac{E}{K o})

How to Evaluate Dalton-Type Equation?

Dalton-Type Equation evaluator uses Lake Evaporation = Coefficient*Wind Speed Correction Factor*(Saturation Vapour Pressure-Actual Vapour Pressure) to evaluate the Lake Evaporation, The Dalton-Type Equation formula is defined as the product of the wind speed correction factor and a coefficient to the difference between saturated vapour pressure and actual vapour pressure. Lake Evaporation is denoted by E_lake symbol.

How to evaluate Dalton-Type Equation using this online evaluator? To use this online evaluator for Dalton-Type Equation, enter Coefficient (K), Wind Speed Correction Factor (f_u), Saturation Vapour Pressure (e_s) & Actual Vapour Pressure (e_a) and hit the calculate button.

FAQs on Dalton-Type Equation

What is the formula to find Dalton-Type Equation?

The formula of Dalton-Type Equation is expressed as Lake Evaporation = Coefficient*Wind Speed Correction Factor*(Saturation Vapour Pressure-Actual Vapour Pressure). Here is an example- 12.359 = 0.5*1.7*(2338.46788-399.966).

How to calculate Dalton-Type Equation?

With Coefficient (K), Wind Speed Correction Factor (f_u), Saturation Vapour Pressure (e_s) & Actual Vapour Pressure (e_a) we can find Dalton-Type Equation using the formula - Lake Evaporation = Coefficient*Wind Speed Correction Factor*(Saturation Vapour Pressure-Actual Vapour Pressure).

What are the other ways to Calculate Lake Evaporation?

Here are the different ways to Calculate Lake Evaporation-

Lake Evaporation=Coefficient Accounting for Other Factors*(Saturation Vapour Pressure-Actual Vapour Pressure)*(1+Monthly Mean Wind Velocity/16)
Lake Evaporation=0.771*(1.465-0.00073*Atmospheric Pressure)*(0.44+0.0733*Mean Wind Velocity at Ground Level)*(Saturation Vapour Pressure-Actual Vapour Pressure)

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Dalton-Type Equation Formula

​GoMeyers formula (1915) Formula

​GoRohwers formula (1931) Formula

Dalton-Type Equation Example

Dalton-Type Equation Solution

Dalton-Type Equation Formula Elements

Other Formulas to find Lake Evaporation

Other formulas in Evaporation category

How to Evaluate Dalton-Type Equation?

FAQs on Dalton-Type Equation

Variable Name

GoMeyers formula (1915) Formula

GoRohwers formula (1931) Formula