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Actual Evapotranspiration Formula

GoActual Evapotranspiration given Aridity Index Formula

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Actual Evapotranspiration is the quantity of water that is actually removed from a surface due to the processes of evaporation and transpiration. Check FAQs

E act = P - ΔS - S r - G o

E_act - Actual Evapotranspiration?P - Precipitation?ΔS - Change in Moisture Storage?S_r - Surface Runoff?G_o - Subsurface Outflow?

Actual Evapotranspiration Example

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Here is how the Actual Evapotranspiration equation looks like with Values.

Here is how the Actual Evapotranspiration equation looks like with Units.

Here is how the Actual Evapotranspiration equation looks like.

0.16 = 0.3 - 0.02 - 0.05 - 0.07

0.16m³/s = 0.3m - 0.02m - 0.05m³/s - 0.07m³/s

0.16 = 0.3 - 0.02 - 0.05 - 0.07

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Actual Evapotranspiration Solution

Follow our step by step solution on how to calculate Actual Evapotranspiration?

FIRST Step Consider the formula

E act = P - ΔS - S r - G o

Next Step Substitute values of Variables

∴

E act = 0.3m - 0.02m - 0.05m³/s - 0.07m³/s

Next Step Prepare to Evaluate

∴

E act = 0.3 - 0.02 - 0.05 - 0.07

LAST Step Evaluate

∴

E act = 0.16m³/s

Actual Evapotranspiration Formula Elements

Variables

Actual Evapotranspiration

Actual Evapotranspiration is the quantity of water that is actually removed from a surface due to the processes of evaporation and transpiration.

Symbol: E_act

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value can be positive or negative.

Formulas to find Actual Evapotranspiration

Precipitation

Precipitation is the primary water input to the hydrologic cycle and is evaluated for all water budget calculations.

Symbol: P

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Precipitation

Change in Moisture Storage

Change in Moisture Storage is the total amount of water that is stored within the specified reservoir or catchment area.

Symbol: ΔS

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Change in Moisture Storage

Surface Runoff

Surface Runoff water, from rain, snowmelt, or other sources, that flows over the land surface, and is a major component of the water cycle.

Symbol: S_r

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value should be greater than 0.

Formulas to find Surface Runoff

Subsurface Outflow

Subsurface Outflow is the flow of water beneath earth's surface as part of the water cycle.

Symbol: G_o

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value can be positive or negative.

Formulas to find Subsurface Outflow

Other Formulas to find Actual Evapotranspiration

Go Actual Evapotranspiration given Aridity Index

E act = PET - (AI \cdot \frac{PET}{100})

Other formulas in Evapotranspiration category

Go Change in Moisture Storage

ΔS = P - S r - G o - E act

Go Precipitation given Change in Moisture Storage

P = ΔS + S r + G o + E act

Go Runoff given Change in Moisture Storage

S r = - (ΔS - P + G o + E act)

Go Subsurface Outflow given Change in Moisture Storage

G o = P - ΔS - S r - E act

How to Evaluate Actual Evapotranspiration?

Actual Evapotranspiration evaluator uses Actual Evapotranspiration = Precipitation-Change in Moisture Storage-Surface Runoff-Subsurface Outflow to evaluate the Actual Evapotranspiration, The Actual Evapotranspiration is the combination for the processes of evaporation and transpiration from the land surface plus transpiration from plants. Actual Evapotranspiration is denoted by E_act symbol.

How to evaluate Actual Evapotranspiration using this online evaluator? To use this online evaluator for Actual Evapotranspiration, enter Precipitation (P), Change in Moisture Storage (ΔS), Surface Runoff (S_r) & Subsurface Outflow (G_o) and hit the calculate button.

FAQs on Actual Evapotranspiration

What is the formula to find Actual Evapotranspiration?

The formula of Actual Evapotranspiration is expressed as Actual Evapotranspiration = Precipitation-Change in Moisture Storage-Surface Runoff-Subsurface Outflow. Here is an example- 0.16 = 0.3-0.02-0.05-0.07.

How to calculate Actual Evapotranspiration?

With Precipitation (P), Change in Moisture Storage (ΔS), Surface Runoff (S_r) & Subsurface Outflow (G_o) we can find Actual Evapotranspiration using the formula - Actual Evapotranspiration = Precipitation-Change in Moisture Storage-Surface Runoff-Subsurface Outflow.

What are the other ways to Calculate Actual Evapotranspiration?

Here are the different ways to Calculate Actual Evapotranspiration-

Actual Evapotranspiration=Daily Potential Evapotranspiration-(Aridity Index*Daily Potential Evapotranspiration/100)

Can the Actual Evapotranspiration be negative?

Yes, the Actual Evapotranspiration, measured in Volumetric Flow Rate can be negative.

Which unit is used to measure Actual Evapotranspiration?

Actual Evapotranspiration is usually measured using the Cubic Meter per Second[m³/s] for Volumetric Flow Rate. Cubic Meter per Day[m³/s], Cubic Meter per Hour[m³/s], Cubic Meter per Minute[m³/s] are the few other units in which Actual Evapotranspiration can be measured.

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Actual Evapotranspiration Formula

​GoActual Evapotranspiration given Aridity Index Formula

Actual Evapotranspiration Example

Actual Evapotranspiration Solution

Actual Evapotranspiration Formula Elements

Other Formulas to find Actual Evapotranspiration

Other formulas in Evapotranspiration category

How to Evaluate Actual Evapotranspiration?

FAQs on Actual Evapotranspiration

Variable Name

GoActual Evapotranspiration given Aridity Index Formula