✖The Actual vapour pressure refers to the pressure exerted by the water vapour present in the air, reflecting the current humidity and temperature, typically measured in cm Hg or kPa.ⓘ Actual Vapour Pressure [v]			+10% -10%
✖Evaporation loss per month refer to the amount of water that transitions from liquid to vapor and escapes into the atmosphere over a specific time period, typically measured on a monthly basis.ⓘ Evaporation Loss per Month [E_m]			+10% -10%
✖The Meyer's constant refers an empirical coefficient in the Meyer evaporation formula, 1.1 for deep water and 1.5 for shallow water.ⓘ Meyer's Constant [C]			+10% -10%
✖Mean wind velocity refers to the wind in kilometres per hour at a height of about 9 meters above the ground.ⓘ Mean Wind Velocity [u]			+10% -10%

✖The Maximum vapour pressure refers to the highest pressure exerted by a vapour in equilibrium with its liquid at a given temperature, often measured in cm Hg or kPa.ⓘ Maximum Vapour Pressure given Evaporation Loss Per Month [V]

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Maximum Vapour Pressure given Evaporation Loss Per Month

Formula

`"V" = "v"+("E"_{"m"}/("C"*(1+("u"/16))))`

Example

`"0.6cmHg"="0.4cmHg"+("8.2cm"/("0.36"*(1+("8km/h"/16))))`

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Maximum Vapour Pressure given Evaporation Loss Per Month Solution

STEP 0: Pre-Calculation Summary

Formula Used

Maximum Vapour Pressure = Actual Vapour Pressure+(Evaporation Loss per Month/(Meyer's Constant*(1+(Mean Wind Velocity/16))))
V = v+(E_m/(C*(1+(u/16))))
This formula uses 5 Variables

Variables Used

Maximum Vapour Pressure - (Measured in Centimeter Mercury (0 °C)) - The Maximum vapour pressure refers to the highest pressure exerted by a vapour in equilibrium with its liquid at a given temperature, often measured in cm Hg or kPa.
Actual Vapour Pressure - (Measured in Centimeter Mercury (0 °C)) - The Actual vapour pressure refers to the pressure exerted by the water vapour present in the air, reflecting the current humidity and temperature, typically measured in cm Hg or kPa.
Evaporation Loss per Month - (Measured in Meter) - Evaporation loss per month refer to the amount of water that transitions from liquid to vapor and escapes into the atmosphere over a specific time period, typically measured on a monthly basis.
Meyer's Constant - The Meyer's constant refers an empirical coefficient in the Meyer evaporation formula, 1.1 for deep water and 1.5 for shallow water.
Mean Wind Velocity - (Measured in Meter per Second) - Mean wind velocity refers to the wind in kilometres per hour at a height of about 9 meters above the ground.

STEP 1: Convert Input(s) to Base Unit

Actual Vapour Pressure: 0.4 Centimeter Mercury (0 °C) --> 0.4 Centimeter Mercury (0 °C) No Conversion Required
Evaporation Loss per Month: 8.2 Centimeter --> 0.082 Meter (Check conversion here)
Meyer's Constant: 0.36 --> No Conversion Required
Mean Wind Velocity: 8 Kilometer per Hour --> 2.22222222222222 Meter per Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V = v+(E_m/(C*(1+(u/16)))) --> 0.4+(0.082/(0.36*(1+(2.22222222222222/16))))

Evaluating ... ...

V = 0.6

STEP 3: Convert Result to Output's Unit

799.932 Pascal -->0.6 Centimeter Mercury (0 °C) (Check conversion here)

FINAL ANSWER

0.6 Centimeter Mercury (0 °C) <-- Maximum Vapour Pressure

(Calculation completed in 00.004 seconds)

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Home » Engineering » Civil » Environmental Engineering » Surface Water Hydrology » Evaporation and Transpiration » Maximum Vapour Pressure given Evaporation Loss Per Month

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< 17 Evaporation and Transpiration Calculators

Mean Wind Velocity at Ground Level given Evaporation Loss Per Day

Go Mean Wind Velocity = ((Evaporation Loss per Day/(Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(Maximum Vapour Pressure-Actual Vapour Pressure)))-0.44)/0.0732

Constant used in Rohwer's Formula given Evaporation Loss Per Day

Go Rohwer's Formula Constant = Evaporation Loss per Day/((1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))*(Maximum Vapour Pressure-Actual Vapour Pressure))

Maximum Vapour Pressure given Evaporation Loss Per Day

Go Maximum Vapour Pressure = Actual Vapour Pressure+(Evaporation Loss per Day/(Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))))

Actual Vapour Pressure given Evaporation Loss Per Day

Go Actual Vapour Pressure = Maximum Vapour Pressure-(Evaporation Loss per Day/(Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))))

Atmospheric Pressure given Evaporation Loss Per Day

Go Atmospheric Pressure = (1.456-(Evaporation Loss per Day/(Rohwer's Formula Constant*(0.44+(0.0732*Mean Wind Velocity))*(Maximum Vapour Pressure-Actual Vapour Pressure))))/0.00732

Evaporation Loss Per Day

Go Evaporation Loss per Day = Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))*(Maximum Vapour Pressure-Actual Vapour Pressure)

Constant used in Rohwer's Formula given Change in Vapour Pressure

Go Rohwer's Formula Constant = Evaporation Loss per Day/((1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))*Change in Vapour Pressure)

Change in Vapour Pressure given Evaporation Loss Per Day

Go Change in Vapour Pressure = Evaporation Loss per Day/(Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity)))

Atmospheric Pressure given Change in Vapour Pressure

Go Atmospheric Pressure = (1.456-(Evaporation Loss per Day/(Rohwer's Formula Constant*(0.44+(0.0732*Mean Wind Velocity))*Change in Vapour Pressure)))/0.00732

Evaporation Loss Per Day given Change in Vapour Pressure

Go Evaporation Loss per Day = Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))*Change in Vapour Pressure

Monthly Mean Wind Velocity given Evaporation Loss Per Month

Go Mean Wind Velocity = ((Evaporation Loss per Month/(Meyer's Constant*(Maximum Vapour Pressure-Actual Vapour Pressure)))-1)*16

Maximum Vapour Pressure given Evaporation Loss Per Month

Go Maximum Vapour Pressure = Actual Vapour Pressure+(Evaporation Loss per Month/(Meyer's Constant*(1+(Mean Wind Velocity/16))))

Actual Vapour Pressure given Evaporation Loss Per Month

Go Actual Vapour Pressure = Maximum Vapour Pressure-(Evaporation Loss per Month/(Meyer's Constant*(1+(Mean Wind Velocity/16))))

Evaporation Loss Per Month

Go Evaporation Loss per Month = Meyer's Constant*(Maximum Vapour Pressure-Actual Vapour Pressure)*(1+(Mean Wind Velocity/16))

Constant Dependent on Depth of Water Bodies given Change in Vapour Pressure

Go Meyer's Constant = Evaporation Loss per Month/(Change in Vapour Pressure*(1+(Mean Wind Velocity/16)))

Change in Vapour Pressure given Evaporation Loss Per Month

Go Change in Vapour Pressure = Evaporation Loss per Month/(Meyer's Constant*(1+(Mean Wind Velocity/16)))

Evaporation Loss Per Month given Change in Vapour Pressure

Go Evaporation Loss per Month = Meyer's Constant*Change in Vapour Pressure*(1+(Mean Wind Velocity/16))

Maximum Vapour Pressure given Evaporation Loss Per Month Formula

Maximum Vapour Pressure = Actual Vapour Pressure+(Evaporation Loss per Month/(Meyer's Constant*(1+(Mean Wind Velocity/16))))
V = v+(E_m/(C*(1+(u/16))))

What is Vapour Pressure ?

Vapour pressure is a measure of the tendency of a material to change into the gaseous or vapour state, and it increases with temperature. The temperature at which the vapour pressure at the surface of a liquid becomes equal to the pressure exerted by the surroundings is called the boiling point of the liquid.

How to Calculate Maximum Vapour Pressure given Evaporation Loss Per Month?

Maximum Vapour Pressure given Evaporation Loss Per Month calculator uses Maximum Vapour Pressure = Actual Vapour Pressure+(Evaporation Loss per Month/(Meyer's Constant*(1+(Mean Wind Velocity/16)))) to calculate the Maximum Vapour Pressure, The Maximum Vapour Pressure given Evaporation Loss Per Month is defined as the highest pressure exerted by a vapor in equilibrium with its liquid at a given temperature, often measured in cm Hg or kPa. Maximum Vapour Pressure is denoted by V symbol.

How to calculate Maximum Vapour Pressure given Evaporation Loss Per Month using this online calculator? To use this online calculator for Maximum Vapour Pressure given Evaporation Loss Per Month, enter Actual Vapour Pressure (v), Evaporation Loss per Month (E_m), Meyer's Constant (C) & Mean Wind Velocity (u) and hit the calculate button. Here is how the Maximum Vapour Pressure given Evaporation Loss Per Month calculation can be explained with given input values -> 0.0003 = 533.288+(0.082/(0.36*(1+(2.22222222222222/16)))).

FAQ

What is Maximum Vapour Pressure given Evaporation Loss Per Month?

The Maximum Vapour Pressure given Evaporation Loss Per Month is defined as the highest pressure exerted by a vapor in equilibrium with its liquid at a given temperature, often measured in cm Hg or kPa and is represented as V = v+(E_m/(C*(1+(u/16)))) or Maximum Vapour Pressure = Actual Vapour Pressure+(Evaporation Loss per Month/(Meyer's Constant*(1+(Mean Wind Velocity/16)))). The Actual vapour pressure refers to the pressure exerted by the water vapour present in the air, reflecting the current humidity and temperature, typically measured in cm Hg or kPa, Evaporation loss per month refer to the amount of water that transitions from liquid to vapor and escapes into the atmosphere over a specific time period, typically measured on a monthly basis, The Meyer's constant refers an empirical coefficient in the Meyer evaporation formula, 1.1 for deep water and 1.5 for shallow water & Mean wind velocity refers to the wind in kilometres per hour at a height of about 9 meters above the ground.

How to calculate Maximum Vapour Pressure given Evaporation Loss Per Month?

The Maximum Vapour Pressure given Evaporation Loss Per Month is defined as the highest pressure exerted by a vapor in equilibrium with its liquid at a given temperature, often measured in cm Hg or kPa is calculated using Maximum Vapour Pressure = Actual Vapour Pressure+(Evaporation Loss per Month/(Meyer's Constant*(1+(Mean Wind Velocity/16)))). To calculate Maximum Vapour Pressure given Evaporation Loss Per Month, you need Actual Vapour Pressure (v), Evaporation Loss per Month (E_m), Meyer's Constant (C) & Mean Wind Velocity (u). With our tool, you need to enter the respective value for Actual Vapour Pressure, Evaporation Loss per Month, Meyer's Constant & Mean Wind Velocity and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Maximum Vapour Pressure?

In this formula, Maximum Vapour Pressure uses Actual Vapour Pressure, Evaporation Loss per Month, Meyer's Constant & Mean Wind Velocity. We can use 1 other way(s) to calculate the same, which is/are as follows -

Maximum Vapour Pressure = Actual Vapour Pressure+(Evaporation Loss per Day/(Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))))

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