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-1 |