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The pan evaporation can also be determined by Christiansen formula.

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in Irrigation Engineering by (75.2k points)
The pan evaporation can also be determined by Christiansen formula.

(a) True

(b) False

I got this question in an interview for job.

I need to ask this question from Water Requirements of Crops topic in portion Water Requirements of Crops of Irrigation Engineering

1 Answer

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by (106k points)
The correct option is (a) True

Explanation: Christiansen formula for pan evaporation is Ep = 0.459 R.Ct.Cw.Ch.Cs.Ce where, R = Extra-terrestrial radiation in cm

Ct = Coefficient of temperature

Cw = Coefficient for wind velocity

Ch = Coefficient for relative humidity

Cs = Coefficient for percent of possible sunshine

Ce = Coefficient of elevation.

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