Module 4_3 Quiz

1. Which of the following parameter values near or at the surface are needed to estimate the evaporation duct profile using the bulk method?

a) Water temperature
b) Air-sea temperature difference
c) Wind speed
d) Air humidity
e) All of the above

2. Which of the following would always cause an increase in the height of the evaporation duct, Z_*. Assume other parameters remain constant, unless otherwise stated.

a) Increase in wind speed, U.
b) Increase in vapor pressure, e, and increase in relative humidity, RH
c) Decrease in sea temperature, T_sea, with constant relative humidity RH and constant air see temperature difference, ΔT
d) Decrease in air temperature, T_air, with constant vapor pressure, e
e) All of the above

3.If we keep the wind speed, U, constant at 5 m/s, the relative humidity, RH, constant at 80%, and the sea temperature, T_sea constant at 15 C and increase the air temperature from 13 C to 20 C, what would happen to the height of the evaporation duct Z_*? Hint: see the slide with these values)

a) It would decrease throughout the temperature change.
b) It would increase throughout the temperature change.
c) It would first decrease and then increase.
d) It would first increase and then decrease.
e) It would not change.