Environmental Engineering Reference
In-Depth Information
Figure 8-35. Sample wind rose diagram.
Line lengths show time distribution, and average
wind speeds are noted for each direction.
Table 8-10. Sample Wind Rose Data in Tabular Format
Direction
Percent frequency per wind speed interval
(mph)
Totals
(%)
Average
speed
0-3
4-7
8-12
13-18
19-24
25-31
N
1
1
2
4.0
NNE
1
2
1
4
5.8
NE
3
8
3
14
5.9
ENE
1
5
2
8
6.3
E
1
2
3
4.0
ESE
1
2
3
4.1
SE
1
3
2
6
7.1
SSE
3
2
1
6
7.8
S
1
3
3
1
8
8.3
SSW
1
3
5
5
1
15
11.5
SW
1
4
5
5
2
17
11.7
WSW
2
2
1
5
5.2
W
1
1
2
4.0
WNW
1
1
2
3.9
NW
1
1
5.0
NNW
1
1
2.0
Calm
3
3
0.0
Totals (%)
20
41
24
12
3
0
100
7.6 mph
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