AHATS daily status 7/22/08
Staff: Semmer, Oncley, Knguyen, Tudor with ISS
Temps: 92F/57F yesterday
For more details, see the ahats logbook at https://wiki.ucar.edu/display/ahatslogbook
Good wind direction: Now have almost 26 hours of data (10 unstable, 16 stable)
in this configuration. We're already half way!
Local data storage: (all now quite low)
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upwind:/dev/sda1 57685532 3898500 53787032 7% /var/tmp/usbdisk
downwind1:/dev/sda1 57685532 4346968 53338564 8% /var/tmp/usbdisk
downwind2:/dev/sda1 57685532 5086676 52598856 9% /var/tmp/usbdisk
profile:/dev/sda1 57685532 3163852 54521680 5% /var/tmp/usbdisk
pressure1:/dev/sda1 3940812 651032 3289780 17% /var/tmp/usbdisk
pressure2:/dev/sda1 3940812 645516 3295296 16% /var/tmp/usbdisk
aster:/dev/sdb1 721075720 248687612 472388108 35% /media/isff2
isff:/dev/sdb1 961432072 374897584 586534488 39% /media/isff3
replacement for isff3 should be at Hanford by now.
Pressure:
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(+/- = ~1 std deviation among variables at the same height)
The spectra I looked at yesterday were strange. I have to look at more
examples to figure out what is wrong. It could simply be turbulent wakes
in this configuration.
p: ok, +/- 0.03 mb
p'p': ok, +/- 0.001 mb^2
w'p': ok, +/- 0.002 m/s mb
t: 6b&6t are outliers by 5degC during day, others +/- 1.5 degC
(may be orientation of sun shields?)
Pref: still steadily drifting low, though a bit of a diurnal cycle now.
(might be cooling of the reservoir)
now 14mb below ambient.
Profile: [,select.p]
--------
T: ok
RH: 4m RH swapped, but left cap on! Now ok?
P: okay
diag: ok
samples.sonic: ok
spd: ok?, 8m generally lower than 7m (sensors are in correct position)
dir: ok
w: ok
tc: ok, 8m low by ~0.3 degC?
w'w': ok
u*: ok
sigma_w/u*: ok (1.3 at night)
w'tc': ok
h2o: ok?, 2 g/m^3 offset from dat("Q"), except in afternoon. (Does a light
leak help??)
w'h2o': ok, 0.03 m/s g/m^3 at midday
co2: ok, 15 mmol/m^3
w'co2': ok, -0.01 m/s mmo/m^3 at midday
Upwind (hts=3.3): [,select.u]
----------------
diag: ok
samples.sonic: ok
spd: ok, +/- 10 cm/s
dir: ok, mean offsets of up to 13deg -- need to enter new Vazimuths??
w: ok, +/- 5 cm/s
tc: ok, +/- 0.2 deg,
w'w': ok, +/- 0.005 m^2/s^2 (30 min avg for second moments)
u*: ok, +/- 3 cm/s, imaginary during light winds this afternoon
sigma_w/u*: ok (1.3 at night)
w'tc': ok, +/- 0.01 m/s degC
tc'tc': ok, +/- 0.05 degC^2
Downwind Lower (hts=3.3): [,select.b]
------------------------
diag: ok
samples.sonic: ok
spd: ok, +/- 30 cm/s
dir: ok, +/- 3 deg
w: ok, +/- 15 cm/s [need to check tilt angles]
tc: ok, +/- 0.2 deg
w'w': ok, +/- 0.01 m^2/s^2 (30 min avg for second moments)
u*: ok, +/- 2 cm/s, some imaginary mid-day
sigma_w/u*: ok (1.3 at night)
w'tc': ok, +/- 0.02 m/s degC
tc'tc': ok, +/- 0.05 degC^2
Downwind Upper (hts=4.3): [,select.t]
------------------------
diag: ok
samples.sonic: ok
spd: ok, +/- 10 cm/s, 3t lower by 20cm/s
dir: ok, +/- 2 deg, 3t now outlier
w: ok, +/- 5 cm/s, 5t&6t outliers
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, again imaginaries
sigma_w/u*: ok (1.3 at night)
w'tc': ok, +/- 0.005 m/s degC
tc'tc': ok, +/- 0.05 degC^2
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