WATER RESOURCES ENGINEERING: Evaporation The temperature and relative humidity for the month of October have the following values: Mean air temperature at 4m: 18o C Maximum lake temperature: 13.5o C Maximum pan temperature: 15o C Relative humidity: 35% During the month, the evaporation measured from the pan was 9.2 cm. Determine the monthly evaporation from the lake by: a. The simple formula, assuming K = 0.75 b. The refined formula, assuming K' = 1.5 c. Solve for lake evaporation using the Aerodynamic method for evaporation using the actual vapor pressure at 4m. The wind speed at 4 m is 2.5 m/s and z0 is 0.04 cm. For calculating the saturation vapor pressure at the surface, assume mean lake temperature to be 80% of the maximum.
WATER RESOURCES ENGINEERING: Evaporation The temperature and relative humidity for the month of October have the following values: Mean air temperature at 4m: 18o C Maximum lake temperature: 13.5o C Maximum pan temperature: 15o C Relative humidity: 35% During the month, the evaporation measured from the pan was 9.2 cm. Determine the monthly evaporation from the lake by: a. The simple formula, assuming K = 0.75 b. The refined formula, assuming K' = 1.5 c. Solve for lake evaporation using the Aerodynamic method for evaporation using the actual vapor pressure at 4m. The wind speed at 4 m is 2.5 m/s and z0 is 0.04 cm. For calculating the saturation vapor pressure at the surface, assume mean lake temperature to be 80% of the maximum.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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WATER RESOURCES ENGINEERING: Evaporation
The temperature and relative humidity for the month of October have the following values:
- Mean air temperature at 4m: 18o C
- Maximum lake temperature: 13.5o C
- Maximum pan temperature: 15o C
- Relative humidity: 35%
During the month, the evaporation measured from the pan was 9.2 cm. Determine the monthly evaporation from the lake by:
a. The simple formula, assuming K = 0.75
b. The refined formula, assuming K' = 1.5
c. Solve for lake evaporation using the Aerodynamic method for evaporation using the actual vapor pressure at 4m. The wind speed at 4 m is 2.5 m/s and z0 is 0.04 cm. For calculating the saturation vapor pressure at the surface, assume mean lake temperature to be 80% of the maximum.
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