To obtain friction velocity (u∗) and scaling humidity (q∗) values for calculating the transfer coefficient for latent heat (Cez), you typically need to conduct experiments, perform field measurements, simulate airflow and humidity profiles, or review existing literature for empirical formulas. Once obtained, these values can be used along with other relevant parameters to calculate Cez.
To obtain the friction velocity (u*) and scaling humidity (q*) values for calculating the transfer coefficient for latent heat (Cez), you typically need to measure the shear stress at the surface for u* and calculate it using the air density. For q*, calculate it using the latent heat of vaporization, specific heat capacity of air, and temperature. These values are crucial for determining the transfer coefficient for latent heat in atmospheric boundary layer studies.