Page 399 - Fundamentals of Air Pollution 3E

HI. Frequency of Atmospheric Stagnations 353

TABLE 21-6
Number of Hours of Wind from Each Direction (Calms Are Distributed)
Direction Hours from this direction Knoxville Nashville
(tens of Nashville backed -Knoxville
degrees) Nashville Knoxville -Knoxville 60° backed 60°
1 140 279 -139 342 -202
2 201 364 -163 204 o
3 158 295 -137 213 -55
4 184 431 -247 119 65
5 138 413 -275 104 34
6 165 426 -261 158 7
7 187 342 -155 174 13
8 134" 204 -70 157 -23
9 202 213 -11 81 121
10 146 119 27 86 60
11 167 104 63 67 100
12 170 158 12 137 33
13 155 174 -19 110 45
14 262 157 105 152 110
15 245 81 164 212 33
16 527 86 441 389 138
17 478 67° 411 410 68
18 736 fc 137 599 616 120
19 348 110 238 442 -94
20 303 152 151 302 1
21 226 212 14 343 -117
22 283 389 -106 209 74
23 243 410 -167 240 3
24 257 6l6 b -359 220 37
25 195 442 -247 174 21
26 182 302 -120 129 53
27 215 343 -128 129 86
28 174 209 -35 181 7
29 231 240 -9 187 44
30 231 220 11 289 -58
31 338 174 164 279 59
32 300 129 171 364 -64
33 212 129 83 295 -83
34 252 181 71 431 -179
35 157 187 -30 413 -256
36 242 289 -47 426 -184
8784 8784 Sum Sum
absolute absolute
OriOU ~ 2650 =
62.0% 30.2%
" Minimum.
* Maximum.