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Note that the tripods for the second upwind array are already set up roughly N of the profile tower. The data scope gives an angle of 156 deg magnetic from the leg of the SW tripod to the profile sonics, so the profile winds from directions greater than 156+180 + 13.7 = 349.7 deg true should be used with caution.
Tables list three independent measurements of sonic azimuth. I measured each row at different times, requiring independent estimates of proper alignment of datascope relative to sonic, which is the biggest source of uncertainty. I found that the sun angle is much better for visibility of the sonics at 7 am than at 10 am, so I reshot the azimuths done prior to 7/11/08.
The cal_file row is entries are the value used for the sonic azimuth in the cal file _files in order to give winds in a coordinate system with the sonic u component normal to the array (positive for winds blowing into the array sonics) and v parallel to the array: use + 13.7 - (325-180) = use - 131.7
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date | 1b | 2b | 3b | 4b | 5b | 6b | 7b | 8b | 9b | 10b | 11b | 12B | 13B |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
7/12 | 136.3 | 131.8 | 134.3 | 133.8 | 136.3 | 130.9 | 134.5 | 135.8 | 134.4 | 134.5 | 138.5 | 136.8 | 137.0 |
7/12 | 136.3 | 130.8 | 134.4 | 134.1 | 136.0 | 131.8 | 134.0 | 136.3 | 135.2 | 135.1 | 138.6 | 136.6 | 136.7 |
7/13 | 136.1 | 131.5 | 135.1 | 134.2 | 136.4 | 131.6 | 134.1 | 136.1 | 134.8 | 135.3 | 138.7 | 136.5 | 136.9 |
use | 136.2 | 131.4 | 134.6 | 134.0 | 136.2 | 131.4 | 134.2 | 136.1 | 134.8 | 135.0 | 138.6 | 136.6 | 136.9 |
cal_file | 4.5 | -0.3 | 2.9 | 2.3 | 4.5 | -0.3 | 2.5 | 4.4 | 3.1 | 3.3 | 6.9 | 4.9 | 5.2 |
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