Campbell Q-7.1 Manuel de l'opérateur télécharger pdf (Page 64)

Installation, Operation and Maintainance of Buoy Operated Automatic Meteorological Stations

Evaporation Rate E

E = (1.74 /

w ) x / ( + y) x (R

- ES)

Inserting in this formula the values calculated above, it follows that:

E = (1.74 / (2450 * 0.99836 x 10

) x 0.145 / (0.145 + 0.066) x (13.27 – 3.13) x10

E = 5.0 x 10

-3

[M day

-1

]

Thus, the open water evaporation for this particular situation is estimated at 5.0 mm per day.

The reader should note that the specified conditions do not represent the actual Lake Nasser environment and are

solely used for demonstration purposes.

5. References

Dingman, S. L. (1993) Physical Hydrology, Macmillan Publishing Company, New York

Fawzy, A (2003) Private notes

Maidment, D. R. (et al) (1992) Handbook of Hydrology, McGraw-Hill Inc., New York

Annexes

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Campbell Q-7.1 Manuel de l'opérateur Page 64