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Wind resources at Horns Rev

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energy. environment. knowledge. Page 29 of 69<br />

2.4 <strong>Wind</strong> profiles<br />

Level above DNN [m]<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

Measured<br />

Z0=0.0002<br />

Z0=0.002<br />

Z0=0.01<br />

0.0 2.0 4.0 6.0 8.0 10.0<br />

<strong>Wind</strong> Speed [m/s]<br />

Figure 2.15 Average wind speed profile all sectors. D<strong>at</strong>a from May 1999 to November<br />

2002.<br />

<strong>Wind</strong> speed profiles offshore are expected to conform to logarithmic profiles, but when<br />

looking <strong>at</strong> the observed average wind speeds <strong>at</strong> the four levels in Figure 2.16, the<br />

figures reveal th<strong>at</strong> the wind speeds <strong>at</strong> 62 m are somewh<strong>at</strong> higher than could be expected<br />

from a logarithmic prediction.<br />

Report no.: D-160949<br />

Tech-wise A/S is an intern<strong>at</strong>ional consulting Tech-wise A/S<br />

engineering company specialised Kraftværksvej 53<br />

in energy and environment DK-7000 Fredericia

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