Table 3 Surface class (Delta, Lake, or Beach), disturbance class (Undisturbed or Disturbed), and mean and standard deviation of threshold friction velocity (u*t), friction velocity at which the NAAQS standard would be exceeded in a 30 m tall column of air (u*exc), friction velocity at which the maximum rate of PM10 vertical flux is observed (u*maxQ), the maximum rate of PM10 vertical flux observed (Max Q), and the total PM10 vertical flux for the nine minute PI-SWERL test (Tot Q) of each sample site
| Site | Surf. Class | Disturb. Class | u*t (m s−1) | u*exc (m s−1) | u*maxQ (m s−1) | Max Q (μg m−2 s− 1) | Tot Q (μg m−2) | |
|---|---|---|---|---|---|---|---|---|
| AD1 | D | U |
Mean St. Dev. |
0.31 0.02 |
0.80 0.02 |
0.81 0.00 |
1325.48 919.87 |
84,217 69,106 |
| AD1 | D | D |
Mean St. Dev. |
0.31 0.02 |
0.62 0.07 |
0.81 0.01 |
11,030.94 5498.17 |
845,554 5,168,485 |
| AD2 | D | U |
Mean St. Dev. |
0.26 0.05 |
0.74 0.12 |
0.80 0.02 |
3098.75 2021.42 |
193,221 131,854 |
| AD3 | D | U |
Mean St. Dev. |
0.24 0.05 |
0.60 0.15 |
0.80 0.02 |
1248.26 8697.52 |
999,201 832,504 |
| AD3 | D | D |
Mean St. Dev. |
0.31 0.02 |
0.50 0.03 |
0.68 0.05 |
24,977.63 1778.07 |
2,226,249 682,823 |
| AD2 | L | U |
Mean St. Dev. |
0.31 0.01 |
-- -- |
0.80 0.00 |
223.60 36.49 |
16,733 2287 |
| RFP | L | U |
Mean St. Dev. |
0.36 0.06 |
-- -- |
0.81 0.00 |
476.06 406.79 |
45,648 77,958 |
| PC | L | U |
Mean St. Dev. |
0.56 0.10 |
0.81 -- |
0.80 0.02 |
561.84 717.75 |
36,857 49,034 |
| RFP | B | U |
Mean St. Dev. |
0.39 -- |
0.77 -- |
0.81 -- |
2450.36 -- |
288,993 -- |
| EB | B | U |
Mean St. Dev. |
0.30 0.10 |
0.72 0.08 |
0.81 0.00 |
7561.78 12,282.01 |
788,012 1,266,773 |
| WB | B | U |
Mean St. Dev. |
0.28 0.04 |
0.50 0.05 |
0.80 0.02 |
17,182.49 6844.97 |
2,727,300 1,084,141 |