List of Symbols
Symbol | description | Units |
C | concentration | kg m-3 |
Cv | soil heat storage capacity | J m-3 °C-1 |
d | diameter | m or cm |
D | diffusivity (or diffusion coefficient) | m2 s-1 |
Ds | diffusion coefficient, of solutes | m2 s-1 |
f | porosity or total porosity | m3 m-3 or cm3 cm-3 or % |
fa | porosity, air-filled | m3 m-3 or cm3 cm-3 or % |
fw | porosity, water-filled | m3 m-3 or cm3 cm-3 or % |
H | soil water potential, total | KPa or m of water |
hg | soil water potential, gravimetric | KPa or m of water |
hm | soil water potential, matric | KPa or m of water |
ho | soil water potential, osmotic | KPa or m of water |
hp | soil water potential, pressure | KPa or m of water |
J | diffusion flux (Fick’s law) | mg m-2 s-1 |
K | hydraulic conductivity | m s-1 |
Ks | hydraulic conductivity, saturated | m s-1 |
M | mass | kg or g |
Mg | mass of gas | negligible |
Ml | mass of liquid | kg or g |
Ms | mass of solid | kg or g |
Mt | mass, total | kg or g |
q | flux density | |
qs | flux, solutes | kg m-2 s-1 |
qw | flux density, soil water | m s-1 |
R | radius | m or cm |
T | temperature | °C |
t | time | s |
V | volume | m3 or cm3 |
Vt | volume, total | m3 or cm3 |
Vs | volume of solids | m3 or cm3 |
Vl | volume of liquid | m3 or cm3 |
Vg | volume of gas | m3 or cm3 |
x | distance | m or cm |
z | depth | m or cm |
ρ | density | kg m-3 |
ρb | dry bulk density | kg m-3 or g cm-3 |
ρp | particle density | kg m-3 or g cm-3 |
ρl | density of liquid (soil water) | kg m-3 or g cm-3 |
θ | soil water content | % |
θw | gravimetric soil water content | kg kg-1 or g g-1 |
θv | volumetric soil water content | m3 m-3 or cm3 cm-3 |
λ | thermal conductivity | J m-1 s-1 °C– |