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For more details, see the ahats logbook at https://wiki.ucar.edu/display/ahatslogbook
Good wind direction:
array#3 (jul 29 12:30-present) now has 40 hours (8 unstable, 32 stable).
We're planning on switching to array #4 on Tom's schedule on 6-7 Aug.
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Pressure:
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(+/- = ~1 std deviation among variables at the same height)unmigrated-wiki-markup
11.b now measuring p with the 202BG connected between the
Bedard port and CHATS reference. P.0m \ [poor name\] now is the
portable Paroscientific standard with reasonable resolution, but
low sampling rate.
p: ok, +/- 0.03 mb
p'p': ok, +/- 0.0005 mb^2
w'p': ok, +/- 0.001 m/s mb
t: ok, 2 degC
Pref: ok, glitch yesterday ~noon when opened to install new sensor
P: okunmigrated-wiki-markup
Profile: \ [,select.p\]
\
-------\-
glitches on 8m when we replaced it today (0900-0930)
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. (Even after the swap today\!)
Maybe the WiFi antenna is bothering it...
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\]). 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 middayunmigrated-wiki-markup
Upwind (hts=4.8): \ [,select.u\]
\
---------------\-
diag: ok
samples.sonic: ok
spd: ok, +/- 20 cm/s
dir: ok, why isn't this better now that angles are shot??
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^2unmigrated-wiki-markup
Downwind Lower (hts=4.8): \ [,select.b\]
\
-----------------------\-
diag: ok
samples.sonic: ok
spd: ok, +/- 20 cm/s
dir: ok, why isn't this better now that angles are shot??
w: ok, +/- 5 cm/s, leveling helped!
tc: ok, +/- 0.2 deg, biases up to +/-0.8
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^2unmigrated-wiki-markup
Downwind Upper (hts=5.8): \ [,select.t\]
\
-----------------------\-
diag: ok
samples.sonic: ok
spd: ok, +/- 10 cm/s, 3t outlier
dir: ok, +/- 2 deg, why isn't this better now that angles are shot??
11t outlier
w: ok, +/- 5 cm/s, leveling helped!
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
...