Is the BD[gr/cm^3] used in the Neural network procedure of RETC:
a- The saturated unit weight bulk density: (Gama) or
b- The unit mass bulk density: Gama/g (where g is the gravity accerlation) or
c- The dry unit weight bulk density:: GamaD= Gama-n *GamaW
(where n is the soil porosity and GamaW=the water unit weight density
or
d- The dry unit mass density :GamaD/g (where g is the gravity accerlation)
If it is a or c then the dimension should be (gf/cm^3)
Thanks