✖Evaporation loss per day refers to the amount of water lost from a surface due to evaporation within a single day, typically measured in millimeters (mm).ⓘ Evaporation Loss per Day [E]			+10% -10%
✖Rohwer's formula constant refers to an empirical coefficient used in Rohwer's equation to estimate evaporation rates, adjusting for local climatic conditions.ⓘ Rohwer's Formula 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 [V]			+10% -10%
✖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%

✖Atmospheric pressure refers to the force exerted by the weight of the atmosphere on a surface, typically measured in pascals (Pa), millibars (mb), or inches of mercury (inHg).ⓘ Atmospheric Pressure given Evaporation Loss Per Day [P_a]

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Formula

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Atmospheric Pressure given Evaporation Loss Per Day

Formula

`"P"_{"a"} = (1.456-("E"/("C'"*(0.44+(0.0732*"u"))*("V"-"v"))))/0.00732`

Example

`"73.62904cmHg"=(1.456-("8.29cm"/("0.75"*(0.44+(0.0732*"8km/h"))*("0.6cmHg"-"0.4cmHg"))))/0.00732`

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Atmospheric Pressure given Evaporation Loss Per Day Solution

STEP 0: Pre-Calculation Summary

Formula Used

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
P_a = (1.456-(E/(C'*(0.44+(0.0732*u))*(V-v))))/0.00732
This formula uses 6 Variables

Variables Used

Atmospheric Pressure - (Measured in Centimeter Mercury (0 °C)) - Atmospheric pressure refers to the force exerted by the weight of the atmosphere on a surface, typically measured in pascals (Pa), millibars (mb), or inches of mercury (inHg).
Evaporation Loss per Day - (Measured in Meter) - Evaporation loss per day refers to the amount of water lost from a surface due to evaporation within a single day, typically measured in millimeters (mm).
Rohwer's Formula Constant - Rohwer's formula constant refers to an empirical coefficient used in Rohwer's equation to estimate evaporation rates, adjusting for local climatic conditions.
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.
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.

STEP 1: Convert Input(s) to Base Unit

Evaporation Loss per Day: 8.29 Centimeter --> 0.0829 Meter (Check conversion here)
Rohwer's Formula Constant: 0.75 --> No Conversion Required
Mean Wind Velocity: 8 Kilometer per Hour --> 2.22222222222222 Meter per Second (Check conversion here)
Maximum Vapour Pressure: 0.6 Centimeter Mercury (0 °C) --> 0.6 Centimeter Mercury (0 °C) No Conversion Required
Actual Vapour Pressure: 0.4 Centimeter Mercury (0 °C) --> 0.4 Centimeter Mercury (0 °C) No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_a = (1.456-(E/(C'*(0.44+(0.0732*u))*(V-v))))/0.00732 --> (1.456-(0.0829/(0.75*(0.44+(0.0732*2.22222222222222))*(0.6-0.4))))/0.00732

Evaluating ... ...

P_a = 73.6290439576381

STEP 3: Convert Result to Output's Unit

98163.7139852023 Pascal -->73.6290439576381 Centimeter Mercury (0 °C) (Check conversion here)

FINAL ANSWER

73.6290439576381 ≈ 73.62904 Centimeter Mercury (0 °C) <-- Atmospheric Pressure

(Calculation completed in 00.004 seconds)

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Home » Engineering » Civil » Environmental Engineering » Surface Water Hydrology » Evaporation and Transpiration » Atmospheric Pressure given Evaporation Loss Per Day

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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))

Atmospheric Pressure given Evaporation Loss Per Day Formula

What is Atmospheric Pressure ?

Atmospheric pressure, also known as barometric pressure (after the barometer), is the pressure within the atmosphere of Earth.

How to Calculate Atmospheric Pressure given Evaporation Loss Per Day?

Atmospheric Pressure given Evaporation Loss Per Day calculator uses 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 to calculate the Atmospheric Pressure, The Atmospheric Pressure given Evaporation Loss Per Day is defined as the force exerted by the weight of the atmosphere on a surface, typically measured in pascals (Pa), millibars (mb), or inches of mercury (inHg). Atmospheric Pressure is denoted by P_a symbol.

How to calculate Atmospheric Pressure given Evaporation Loss Per Day using this online calculator? To use this online calculator for Atmospheric Pressure given Evaporation Loss Per Day, enter Evaporation Loss per Day (E), Rohwer's Formula Constant (C'), Mean Wind Velocity (u), Maximum Vapour Pressure (V) & Actual Vapour Pressure (v) and hit the calculate button. Here is how the Atmospheric Pressure given Evaporation Loss Per Day calculation can be explained with given input values -> 0.056133 = (1.456-(0.0829/(0.75*(0.44+(0.0732*2.22222222222222))*(799.932-533.288))))/0.00732.

FAQ

What is Atmospheric Pressure given Evaporation Loss Per Day?

The Atmospheric Pressure given Evaporation Loss Per Day is defined as the force exerted by the weight of the atmosphere on a surface, typically measured in pascals (Pa), millibars (mb), or inches of mercury (inHg) and is represented as P_a = (1.456-(E/(C'*(0.44+(0.0732*u))*(V-v))))/0.00732 or 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 refers to the amount of water lost from a surface due to evaporation within a single day, typically measured in millimeters (mm), Rohwer's formula constant refers to an empirical coefficient used in Rohwer's equation to estimate evaporation rates, adjusting for local climatic conditions, Mean wind velocity refers to the wind in kilometres per hour at a height of about 9 meters above the ground, 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 & 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.

How to calculate Atmospheric Pressure given Evaporation Loss Per Day?

The Atmospheric Pressure given Evaporation Loss Per Day is defined as the force exerted by the weight of the atmosphere on a surface, typically measured in pascals (Pa), millibars (mb), or inches of mercury (inHg) is calculated using 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. To calculate Atmospheric Pressure given Evaporation Loss Per Day, you need Evaporation Loss per Day (E), Rohwer's Formula Constant (C'), Mean Wind Velocity (u), Maximum Vapour Pressure (V) & Actual Vapour Pressure (v). With our tool, you need to enter the respective value for Evaporation Loss per Day, Rohwer's Formula Constant, Mean Wind Velocity, Maximum Vapour Pressure & Actual Vapour Pressure 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 Atmospheric Pressure?

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

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

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