Wind speed as a function of time. Grayscale indicates height above instrument with black closer to the surface than gray.
Wind speed as a function of time.
Grayscale indicates height above instrument with black closer to the surface than gray.
Wind direction as a function of time.
Grayscale indicates height above instrument with black closer to the surface than gray.
CNR (Carrier to Noise Ratio) as a function of time.
Grayscale indicates height above instrument with black closer to the surface than gray.
CNRts is the threshold below which no meaningful retrieval is possible.
Wiperts is the threshold for the lowest range gate below which the wiper is activated to clean the window.
Basic meteorological data from the windcube
(Text : external temperaure (red),
Tdew : dey point (green),
Tint : internal temperature of the instrument,
RH : relative humdity,
qspc : specific humidity,
P : air pressure.
)
Wind speed profiles as a function of time and height.
with CNR (Carrier to Noise Ratio) as gray shading.
Wind speed profiles as a function of time and height,
with wind direction as color shading.
Time height section of horizontal wind vectors (u,v) with CNR (Carrier to Noise Ratio) as gray shading.
Time height section of wind vectors (|(u,v)|,w) with CNR (Carrier to Noise Ratio) as gray shading.
Time height section of vertical wind standard deviation (σw) as color shading.
Lowest height were σw falls below 0.4m/s as indicator for the height of a mixed layer (black line).
Various standard deviations versus carrier to noise ratio (CNR).
σspd (black diamonds) and σw (red squares) are the standard deviations of horizontal wind and vertical wind, respecively.
dsb (blue triangles) is the doppler spectral broadening.
CNRts is the threshold below which no meaningful retrieval is possible.
The blue line indicates a simple visual power law fit for the dependency of dsb on CNR.
dsb is thus rahter a measure for noise in the retrieval than turbulence inside the measuring volume.
Standard deviation of horizontal wind (σspd) versus σw.
Grayscale indicates height above instrument with black closer to the surface than gray.
Relative Standard deviation of horizontal wind (σspd/sqrt(σw2+dsb2)) versus height.
with dsb the doppler spectral broadening.
Standard deviation of horizontal wind σspd versus doppler spectral broadening (dsb).
Grayscale indicates height above instrument with black closer to the surface than gray.
Standard deviation of vertical wind (σw) versus doppler spectral broadening (dsb).
Grayscale indicates height above instrument with black closer to the surface than gray.
Ratio of horizontal (σspd) and vertical wind standard deviations (σw)
as a function of Doppler spetral broadening (dsb).
Grayscale indicates height above instrument.