PENMAN SAMPLE DATA SET
    INPUT

  • Enter [mean monthly] temperature (degree Celsius): 20

  • Select month: June

  • Enter [mean monthly] net radiation (cal/cm2/day): 550

  • Enter relative humidity (%): 70

  • Enter wind velocity at 2-m depth (km/day): 200

  • Enter project description or comments:

    Example 2-5, page 47, Ponce, V. M., 1989: Engineering Hydrology, Principles and Practices, Prentice Hall.

    OUTPUT

  • Your results are [PET (cm)]:

    Daily PET = 0.74

    Monthly PET = 22.2

RUN!