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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).  If the zero wind offset exceed exceeds these thresholds, the table lists the temperature range of the over-limit offset and the largest amplitude of the offset.  The plots of offsets versus temperature can then be examined to determine the exact nature of the offset.

The last column relates to the following project, METCRAX, in October 2013.  The operating temperature range for night-time warm-air intrusions into the crater is on the order of -10 to +20 C.  The last column note notes whether or not the sonic is suitable for that temperature range.

SN

Height (m)

EOL Cal

CSI Cal

u

v

w

METCRAX?

0536

 

 

6/27/12

 

 

 

ok 2/4/13

0537

 

 

6/21/12

 

 

 

ok 2/6/13

0538

Spare 

7/25/13

10/17/12

32 - 49 C
-7 cm/s
@43 C

46 - 49 C
-7.3 C
@ 49 C

44-46 V
-2.5 cm/s
@ 45 C

OK

0539

 

 

6/20/12

 

 

 

ok 2/6/13

0540

 

 

2013

 

 

 

recalibrated

0671

14 m

 

6/28/12

 

 

 

ok 2/4/13

0672

32 m

0672

 

7/26/13

10/10/12

35 - 49 C
+8 cm/s
@ 47 C

36 - 49 C
-7.4 cm/s
@ 49 C

ok

OK

0673
 

26 m

7/25/1213

7/18/12

ok

25 - 44 C
+6 cm/s
@ 39 C

20 - 50 C
-3 cm/s
@ 34 C

OK

0674

Spare

7/29/13

8/13/12

ok

ok

ok

OK

0677

 

 

6/17/12

 

 

 

ok 2/5/13

0800

8 m

7/29/13

6/19/12

ok

10 - 35 C
+8 cm/s
@ 21 C

17 - 53 C
-3.6 cm/s
@ 45 C

Requires
CSI recal

0853

 

6/21/12

 

 

 

 

ok 1/30/13

0855

 

9/12/12

 

 

 

 

ok 2/1/13

0856

 

 

 

 

 

 

recalibrated

1117

 

 

 

 

 

 

recalibrated

1119

2 m

1119

 

7/26/1213

8/9/12

ok

49-53 C
+7 cm/s
@ 53 C

1 - 44 C
-3 cm/s
@ 17 C

Marginally
OK

1120

 

 

 

 

 

 

recalibrated

1121
 

20 m

7/26/1213

12/8/11

-14 - 24 C
-11 cm/s
@ -9 C

-14 - 44C
-9.5 cm/s
@ -7 C

-15 - 49 C
-5.6 cm/s
@ -9 C

Requires
CSI recal

1122
 

44 m

7/26/1213

12/8/11

28-53 C
+5.8 cm/s
@ 36 C

49-53 C
-4.3 cm/s
@ 53 C

48-53 C
-2.7 cm/s
@ 53 C

OK

1123   

 

 

 

 

 

  

recalibrated

1124 

  


7/19/12

 

 

 

ok 2/6/13

1244

38 m