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Chapter 9: Problem 8

Explain how to derive actual evapotranspiration (ACTET) in the water-balance equation.

Short Answer

Expert verified
ACTET, the actual evapotranspiration in the water-balance equation, can be derived by rearranging the water-balance equation as \( ACTET = P - \Delta S \), where P is precipitation and \(\Delta S\) is the change in water storage. This equation can be used to calculate ACTET if you are given the P and \(\Delta S\) values.

Step by step solution

01

Understand the Water Balance Equation

The water balance equation can be written as: \( P = ACTET + \Delta S \), where P is precipitation, ACTET is actual evapotranspiration, and \(\Delta S\) is the change in water storage.
02

Rearrange the Water-Balance Equation to Solve for ACTET

To derive ACTET from the equation, rearrange the equation to isolate ACTET on one side. The rearranged equation becomes: \( ACTET = P - \Delta S \)
03

Substituting the Values

Substitute the values of precipitation (P) and change in water storage (\(\Delta S\)) into the equation to calculate ACTET.

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