Glossary¶
Symbol |
Definition |
Unit |
|---|---|---|
D |
Turbine rotor diameter (fixed parameter) |
m |
t |
Time |
s |
x, y, z |
Coordinates (east-west, north-south, vertical) |
m |
nt, nx, ny, nz |
Number points in time and space dimensions |
|
u |
Wind vector component along East - West, positive going from West to East |
m/s |
v |
Wind vector component along North - South, positive going from South to North |
m/s |
w |
Wind vector component along vertical, positive going up |
m/s |
U |
Magnitude of horizontal wind speed vector |
m/s |
WS |
Magnitude of 3D wind speed vector |
m/s |
uLOS |
Wind vector component along the line of sight of each lidar beam |
m/s |
WD |
Direction of horizontal wind speed vector |
deg |
\({\Delta}\) WD |
Veer computed at fixed (x,y) from two distinct z points |
deg |
TI |
Turbulence intensity (from horizontal wind speed) |
% |
TKE |
Turbulence kinetic energy (from 3-D wind speed) |
m²/s² |
L |
Obukhov length |
m |
u* |
Friction velocity |
m/s |
z0 |
Roughness length |
m |
zi |
Atmospheric boundary layer height |
m |
T |
Absolute temperature |
K |
Ts |
Sonic temperature |
K |
Fs |
Sensible heat flux |
W/m² |
CNR |
Carrier-to-noise ratio |
db |
\(\overline{q}\) |
Temporal average of variable q |
unit of q |
<q> |
Ensemble average of variable q |
unit of q |
q’ |
Temporal perturbation of variable q, defined as - q |
unit of q |
qhub |
Variable q evaluated at hub height |
unit of q |
\({\sigma}\)q |
Standard deviation of variable q |
unit of q |
P |
Generator power |
W |