#1 The maximum and minimum temperature recorded at a Lake is 18°C and 15°C in February. The mean air temperature (T), pan evaporation (EP), wind speed (uz), relative humidity (RH), and net radiation (Rn) in a nearby weather station were found to be 23°C, 15 mm/day, 23 m/s, 47%, 20.54 MJ/m²/day, respectively. Estimate Lake evaporation (mm/day) using: (b) Aerodynamic method, Data you may need: (19.65 T Saturation vapor pressure, es = 611 e 273+T) where T is temperature in °C and e, in Pa (You can also use table to read off the value of e, from internet or textbook (Table 2.9 or Appendix A) Assume, Pan Coefficient = 0.7 Bulk evaporation coefficient, CE = 1.3×10-3 Vapor pressure at elevation Z; ez = RH*es Atmospheric pressure at sea level = 101.3 kPa Density of air = 1.19 kg/m³ and for water = 1000 kg/m³ Bowen ratio = 0.1 Latent heat of vaporization (2) = 2.447 MJ/kg Disregard the soil head index (G= 0) Constants for the Penman method (Table 2.9): at 23°C, A = 0.17 and y = 0.0669 kPa/°C

#1 The maximum and minimum temperature recorded at a Lake is 18°C and 15°C in February. The mean air temperature (T), pan evaporation (EP), wind speed (uz), relative humidity (RH), and net radiation (Rn) in a nearby weather station were found to be 23°C, 15 mm/day, 23 m/s, 47%, 20.54 MJ/m²/day, respectively. Estimate Lake evaporation (mm/day) using: (b) Aerodynamic method, Data you may need: (19.65 T Saturation vapor pressure, es = 611 e 273+T) where T is temperature in °C and e, in Pa (You can also use table to read off the value of e, from internet or textbook (Table 2.9 or Appendix A) Assume, Pan Coefficient = 0.7 Bulk evaporation coefficient, CE = 1.3×10-3 Vapor pressure at elevation Z; ez = RH*es Atmospheric pressure at sea level = 101.3 kPa Density of air = 1.19 kg/m³ and for water = 1000 kg/m³ Bowen ratio = 0.1 Latent heat of vaporization (2) = 2.447 MJ/kg Disregard the soil head index (G= 0) Constants for the Penman method (Table 2.9): at 23°C, A = 0.17 and y = 0.0669 kPa/°C

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Hydrology Problem: A reservoir is being planned for Albuquerque, NM. The design evaporation is set as the critical period of July. Compute evaporation depth during July using the Penman method. The net radiation is 361 ly/day with a pressure of 838 mb. Max Temperature: 92°FMax Wind Speed: 7.3 mphRelative Humidity: 31%
Which of the following data is needed to calculate reference evapotranspiration using the Blaney-Criddle. Select one: a. Minimum and maximum temperature b. Minimum temperature and Pan evaporation c. Maximum temperature and relative humidity d. Solar radiation and maximum temperature
A weatherman carried an aneroid barometer from the ground floor to his office atop a certain building. On the level ground, the barometer reads 40 in.Hg.A; topside read 29in.Hg.A. The average atmospheric air density was 0.08 lb/cu.ft. Estimate the height of the building.
a) Estimate the atmospheric mixing depth from a ground source (0 m) at ambient temperature (12 °C) from the following readings:Altitude, m 100 200 300 400 500 600 700Temperature, °C 9 10 11 12 13 14 15 b) For the same readings, estimate the mixing depth (or plume rise) from a 50-m elevated source with a temperature of 20°C.
At a given location, the net radiation was 200 W/m2, the air temperature was 28°C, and the wind velocity at 2 m height was 3.0 m/s, relative humidity is 80%, roughness height is 0.1 cm. Use density of water = 1000 kg/m3 and psychrometric constant = 66.8 Pa/°C. Use energy balance method, aerodynamic method, and combined method to determine the evaporation rate (in mm/day). Using Energy Balance Method in mm/day Round to two (2) decimal places
Calculate the evaporation using Combination Method (mm/day) from an open water surface with air temperature 22°C, relative humidity is 40% and wind speed is 3 m/s, all measured at height 2 m above the water surface. Assume a roughness height of 0.03 cm. The net radiation is 200 W/m^2. Cp=1005 J/kg-K *Kelvin = Degree Celsius + 273.2 , use this in computing for the density of air
Estimate monthly evaporation for a large lake for the month of July using the Meyer Equation for the folowing data: - Mean montly air temperature: 70F - Mean montly relative humidity: 60% - Mean monthly wind speed at 25 ft height: 30 mile/hr Also compute for the amount of evaporation expected from a lake per week for the data as: -Lake water temperature: 78F - Air temperature: 90F - Wind mileage - 1680 miles/week at 25 ft
Civil Q- The infiltration rates in a region during various periods of time following the 0.20 to 0.30 0.10 to 0.20 0.25 0.15 Table 5.1 displays the storm's onset. 900 mm of rain fell in all. Using Horton's approach, calculate the total rain, total infiltration loss, and excess rain.
Which technique is applied in analysing fresh water aquifers free of thermotolerant contaminant in an unconfined bed?
A reporter carried an aneroid barometer from the ground floor to his office atop a building. On ground floor, the barometer read 30.15 in. Hg absolute while on the top of the building, it read 28.607 in. Hg absolute. Assume that the average atmospheric air density was 0.075 lb/ft3 and estimate the height (in feet) of the building.
At a given location, the net radiation was 200 W/m2, the air temperature was 28°C, and the wind velocity at 2 m height was 3.0 m/s, relative humidity is 80%, roughness height is 0.1 cm. Use density of water = 1000 kg/m3 and psychrometric constant = 66.8 Pa/°C. Use energy balance method, aerodynamic method, and combined method to determine the evaporation rate (in mm/day). Using Combined Method in mm/day Round to two (2) decimal places
What is the effect of evaporation and fog formation on the radiation inversion?