January 9, 2013
Following the SCP project, we tested each sonic in a zero-wind enclosure within the EOL temperature chamber, measuring wind component offsets and sonic temperature errors over the nominal range -30 C to 55 C. The following table shows wind component offsets as okay if the u and v offsets are less than +/- 4 cm/s and the w offsets less than +/- 2 cm/s (between - 20 C and 30 C). The sonic temperature corrections are listed as the slope and offset of a linear fit (between -20 C and 30 C), Tc = offset + slope*tc.sonic, where Tc is calculated from temperature, relative humidity, and pressure measured in the zero-wind enclosure.
Location |
Sonic |
Cal date |
u |
v |
w |
tc offset |
tc slope |
|---|---|---|---|---|---|---|---|
Ah1 |
0923 |
15aug12 |
|
|
|
|
|
Ah2 |
0833 |
29aug12 |
|
|
|
|
|
Ah2 (after 10/19/12@10:15) |
0671 |
|
|
|
|
|
|
Aph3 |
0743 |
05jul12 |
|
|
|
|
|
A4 |
1120 |
19jul12 |
|
|
|
|
|
Ah5 |
0732 |
09jul12 |
|
|
|
|
|
Ah6 |
0800 |
08dec11 |
|
|
|
|
|
A7 |
0673 |
18jul12 |
|
|
|
|
|
Ap8 |
0176 |
22aug12 |
|
|
|
|
|
Ap9 |
1121 |
08dec11 |
|
|
|
|
|
Ap10 |
0677 |
17jul12 |
|
|
|
|
|
Ars11 |
0674 |
13aug12 |
|
|
|
|
|
Ap12 |
0855 |
12sep12 |
|
|
|
|
|
A13 |
0745 |
09jul12 |
|
|
|
|
|
Ap14 |
1124 |
19jul12 |
|
|
|
|
|
A15 |
1122 |
08dec11 |
|
|
|
|
|
A16 |
0740 |
28aug12 |
|
|
|
|
|
A17 |
0856 |
31jan12 |
|
|
|
|
|
A18 |
0744 |
06jul12 |
|
|
|
|
|
A19 |
0672 |
17jul12 |
|
|
|
|
|
A19 |
0178 |
|
|
|
|
|
|
C.1m |
0200 |
27jun12 |
ok |
ok |
ok |
-0.04 |
1.0192 |
C.2m |
0197 |
03jul12 |
ok |
ok |
ok |
0.74 |
0.9900 |
M.05m |
1455 |
|
|
|
|
|
|
M.1m |
1117 |
|
|
|
|
|
|
M.2m (until 9/27/12@15:03?) |
0538 |
|
|
|
|
|
|
M.2m |
0536 |
|
|
|
|
|
|
M.3m |
0540 |
|
|
|
|
|
|
M.4m |
0738 |
|
|
|
|
|
|
M.5m (until 9/27/12@15:03?) |
0671 |
|
|
|
|
|
|
M.5m |
0537 |
|
|
|
|
|
|
M.10m |
1119 |
|
|
|
|
|
|
M.20m |
0741 |
|
|
|
|
|
|