AHATS daily status 7/07/08
Staff: Maclean, Horst, Khoung, McIntyre
Summary: Yesterday we deployed pressure-1 after lunch and pressure-2
around 20:30 PDT. Pressure-1 serves 3b-6b and 5t-7t, but pressure-2
had only 5 new filter boards, serving 7b-9b and 8t-9t. Unfortunately
the temperature channel on 9b is noisy. Gordon finished the final
two filter boards this morning and installed them in pressure-2.
The bad filter board was removed, leaving 11b currently not connected.
We will count July 7 12:30 PDT as the new start of (good) operations.
A tentative revised configuration schedule would be:
Config z (m) S (m) Dates Length
1 3-4 4 7/7-15 8 days
2 3-4 1.3 7/18-25 7 days
3 7-8 1.3 7/25-31 7 days
4 7-8 0.43 8/3-9 7 days
Gordon replaced the serial board in the upwind adam, which should
eliminate the outages we have been experiencing there.
For more details, see the ahats logbook at https://wiki.ucar.edu/display/ahatslogbook
Good wind direction: For the period 6/25 17:00 through 7/7 13:00, we have
121.17 hours of data periods of length 20 minutes or longer with
wind directions from 295-355 degrees. This includes 92.67 hours of periods
longer than one hour and equates to good wind direction periods 43%
of the time. Sorted by stability, there are 61.08 hours of stable
stratification (<w'tc'> < 0) and 58.67 hours of unstable stratification.
Profiles:
---------
diag: ok
samples.sonic: ok
spd: ok
dir: ok
w: ok
tc: ok
sigma_w/u*: ok (1.3 at night)
u*: ok
w'tc': ok
T: ok
RH: 4m may be low by less than 1% RH
P: okay
Upwind (hts=3.5):
----------------
(+/- = ~1 std deviation)
missing sonics 5u-11u 1:10 - 09:00, July 6
missing sonics 5u-11u 20:10 July 6 - 07:40 July 7
diag: ok
samples.sonic: ok
spd: ok, +/- 17 cm/s (6u has +15 cm/s offset in u)
dir: ok, +/- 5 deg
w: ok, +/- 6 cm/s
tc: ok, +/- 0.2 deg
w'w': ok, +/- 0.01 m^2/s^2 (30 min avg for second moments)
u*: ok, +/- 5 cm/s
sigma_w/u*: ok (1.3 at night)
w'tc': ok, +/- 0.02 m/s degC
tc'tc': ok, +/- 0.06 degC^2
Lower (hts=3):
-------------
upwind2 stopped 9:10-11:30, July 6; missing sonics 9b-13b
diag: ok
samples.sonic: ok
spd: ok, +/- 20 cm/s
dir: ok, +/- 6 deg
w: ok, +/- 5 cm/s
tc: ok, +/- 0.27 deg
w'w': ok, +/- 0.01 m^2/s^2 (30 min avg for second moments)
u*: ok, +/- 4 cm/s
sigma_w/u*: ok (1.3 at night)
w'tc': ok, +/- 0.02 m/s degC
tc'tc': ok, +/- 0.1 degC^2
Upper (hts=4):
-------------
upwind2 stopped 9:10-11:30, July 6; missing sonics 7t-11t
diag: ok
samples.sonic: ok
spd: ok, +/- 17 cm/s
dir: ok, +/- 5 deg; 6t is about 6.5 degrees off from profile sonic
w: ok, +/- 6 cm/s
tc: ok, +/- 0.2 deg
w'w': ok, +/- 0.01 m^2/s^2 (30 min avg for second moments)
u*: ok, +/- 4 cm/s
sigma_w/u*: ok (1.3 at night)
w'tc': ok, +/- 0.02 m/s degC
tc'tc': ok, +/- 0.05 degC ^2