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For more details, see the ahats logbook at https://wiki.ucar.edu/display/ahatslogbook^{Image Removed}unmigrated-wiki-markup

Good wind direction:
array#2 (jul 20 16:00-jul 29 06:00) ended up with 67 hours (22 unstable,
45 stable).&nbsp;   It was lengthened a bit to allow more time in the <better>
pressure configuration.&nbsp;   There also had been some data system failures
resulting in the loss of \ ~5 hours of data.
array#3 (jul 29 12:30-present) now has 18 hours (2 unstable, 16 stable).
We shouldn't have lost much during yesterday's work since directions were
bad.&nbsp; \  [this statistic actually is low since need covar_redo\]

Local data storage: (we downloaded everything on 30 July)
------------------
upwind:/dev/sda1 57685532 5281796 52403736 9% /var/tmp/usbdisk
downwind1:/dev/sda1 57685532 5875748 51809784 10% /var/tmp/usbdisk
downwind2:/dev/sda1 57685532 6874668 50810864 12% /var/tmp/usbdisk
profile:/dev/sda1 57685532 3836724 53848808 7% /var/tmp/usbdisk
pressure1:/dev/sda1 3897204 1180848 2716356 30% /var/tmp/usbdisk
pressure2:/dev/sda1 3897204 1242284 2654920 32% /var/tmp/usbdisk

...

p: ok, +/- 0.03 mb
p'p': ok, +/- 0.0005n mb^2
w'p': ok, +/- 0.002 m/s mb
t: 6b&6t are outliers by 3degC during day, others +/- 1.5 degC
Pref: ok -- has moved a lot during several changes
P: ok

Wiki MarkupProfile: \ [,select.p\] \
-------\-

T: ok
RH: sensor that is now at 5.8m is strange.  Since sonics are now at this
level, we may work to fix it.unmigrated-wiki-markup

diag: ok
samples.sonic: ok
spd: ok?, 8m still lower than 7m sometimes.&nbsp;   We'll change 8m out during
the next configuration switch.
dir: ok
w: ok
tc: ok, 8m low by \ ~0.3 degC? (related to the speeds being low as well?)
w'w': ok
u*: ok, some imaginary values with light winds
sigma_w/u*:
w'tc': ok
h2o: normal, 2 g/m^3 offset from dat("Q"), except in afternoon.
w'h2o': ok, 0.03 m/s g/m^3 at midday
co2: ok, 15-20 mmol/m^3 (some nights have large values, some don't \ [last
night\]).&nbsp;   Presumably related to shallow nocturnal boundary layers,
but I haven't gone through the sodar data yet.
w'co2': ok, \ -0.01 m/s mmo/m^3 at midday

Wiki MarkupUpwind (hts=4.8): \ [,select.u\] \
---------------\-
Has crashed each of the last 5 nights at about 10pm.&nbsp;   Last night stayed
down due to a certain SE trying to help.&nbsp;   We've replaced the Viper CPU
board so hopefully it will work tonight.

diag: ok
samples.sonic: ok
spd: ok, +/- 20 cm/s
dir: ok, need new angles again...
w: ok, +/- 5 cm/s
tc:  ok, +/- 0.2 deg, biases somewhat larger
w'w': ok, +/- 0.005 m^2/s^2  (30 min avg for second moments)
u*: ok,  +/- 2 cm/s, some imaginary
sigma_w/u*:
w'tc': ok, +/- 0.01 m/s degC
tc'tc': ok, +/- 0.05 degC^2

Wiki MarkupDownwind Lower (hts=4.8): \ [,select.b\] \
-----------------------\-

Wiki Markupdiag: ok
samples.sonic: ok
spd: ok, \ +/\- 20 cm/s,&nbsp;   perhaps less scatter after move
dir: ok, need new angles again... (not seeing big changes since
move yesterday)
w: ok, \ +/\- 15 cm/s \ [need to check tilt angles\].&nbsp;   Most negative.
tc:&nbsp;   ok, \ +/\- 0.2 deg
w'w': ok, \ +/\- 0.01 m^2/s^2&nbsp; s^2  (30 min avg for second moments)
u*: ok,&nbsp; \  +/\- 2 cm/s, some imaginary
sigma_w/u*:
w'tc': ok, \ +/\- 0.01 m/s degC
tc'tc': ok, \ +/\- 0.05 degC^2

Wiki MarkupDownwind Upper (hts=5.8): \ [,select.t\] \
-----------------------\-

diag: ok
samples.sonic: ok
spd: ok, +/- 10 cm/s, perhaps less scatter after move
dir: ok, +/- 2 deg, need new angles again...(not seeing big changes since
move yesterday)
w: ok, +/- 5 cm/s
tc:  ok, +/- 0.2 degC, offsets up to 0.6 degC
w'w': ok, +/- 0.01 m^2/s^2  (30 min avg for second moments)
u*: ok,  +/- 2 cm/s, som imaginary
sigma_w/u*:
w'tc': ok, +/- 0.01 m/s degC
tc'tc': ok, +/- 0.05 degC^2

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