WMOD00387

• Title: Wind Site Prospecting Studies
• Prepared By: W. F. Harrison, S. J. Hightower
• Date: 10/1/1982
• Weather Modification - Doc Type: Report

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Figure 1.-location,of PROBE anemometer stations.

speed are computed. Unusable data are edited
out prior to averaging.

B. The windspeeds are extrapolated to 10, 50,
61, and 80 m, using the(1~7 p)o~:r law:

V2= V, H~

where V, = measured windspeed, H, = height of
measured windspeed, H2 = height to which wind
is being extrapolated, and V2 = extrapolated
windspeed.

C. The power-versus-windspeed curves for the
MOD-2 and WTS-4 were shifted from the Medi-
cine Bow, Wyoming site to sea level values using
the equation:

( )113
VSL = VM ~:

where V SL = windspeed curve values at sea level.
PM = density value at Medicine Bow, PSL = density
value at sea level. and VM = windspeed curve
values at Medicine Bow.

D. The power-versus-windspeed curves for the
MOD-2 cut-in and the WTS-4 cut-in and cut-out

are shifted to the station density values, using the
equation:

VS1TE= VSL

( PSL )
PSITE

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where VSL =windspeed curve values at sea level,
PSL = density value at sea level, PSITE = density
value of the specific site, and VS1TE = windspeed
curve values for the specific site,

The power-versus windspeedcurve for the MOD-
2 cut-out is shifted to the station density value.
using the equation:

where
above.

VS1TE = VSL (:S~~E) '12

VS1TE, VSL, PSL' and PSITE are as defined

E. The density values are determined as follows:

1. Calculate IACO pressure P (mb) at site
elevation from Smithsonian tables
2, Use USAF Skew-T log P diagram to obtain
mean Kelvin temperature (T) at site ele-
vation for a U,S, Standard Atmosphere,
3, Use dry gas constant (R).

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