Staff: Maclean, Horst, Khoung, Brown; Chenning left this morning
Summary: Gordon found low voltages in the adams, so has been improving the
battery charging over the past few days. These changes have improved the
power in the adams and have reduced the number of outages we have been
having.
We have been measuring the array dimensions and still need to measure
the sonic azimuths.
We are essentially starting ops at 13:00 on July 1, because of
the change in sonic heights in the upwind array and the late completion
of the pressure array. Chenning and I have agreed on the following
tentative schedule for configuration changes.
Configuration 1 (height = 3m, spacing = 4m): July 1-10 (10 days)
Configuration 2 (height = 3m, spacing = 1.29m): July 13-20 (8 days)
Configuration 3 (height = 7m, spacing = 1.29 m): July 22-29 (8 days)
Configuration 4 (height = 7m, spacing = 0.43 m): August 1-9 (9 days)
For more details, see the ahats logbook at https://wiki.ucar.edu/display/ahatslogbook
Good wind direction: For the period 7/1 13:00 through 7/2 13:00, we have
13.67 hours of data periods of length 20 minutes or longer with
wind directions from 195-355 degrees. This includes 3 periods of length
greater than one hour and equates to good periods 57% of the time.
Profiles:
---------
spd: ok
dir: ok
w: ok
tc: ok
sigma_w/u*: ok (1.3 at night)
u*: ok
w'tc': ok
diag: ok
samples.sonic: undersampled sonic data 16:00-17:00, July 1
T: ok
RH: 4m may be low by less than 1% RH
P: okay
(+/- = ~1 std deviation)
Upwind (hts=3.5):
----------------
spd: ok, +/- 15 cm/s
dir: ok, +/- 5 deg
w: ok, +/- 5 cm/s
tc: ok, +/- 0.2 deg
w'w': ok, +/- 0.01 m^2/s^2 (30 min avg for second moments)
u*: ok, +/- 0.04 m/s
sigma_w/u*: ok (1.3 at night)
tc'tc': ok, +/- 0.1 degC^2
u*: ok, +/- 0.04 m/s
w'tc': ok, +/- 0.015 m/s degC
diag: ok
samples.sonic: undersampled sonic data 16:00-17:00, July 1
Lower (hts=3):
-------------
spd: ok, +/- 20 cm/s
dir: ok, +/- 5 deg
w: ok, +/- 6 cm/s
tc: ok, +/- 0.25 deg
w'w': ok, +/- 0.01 m^2/s^2 (30 min avg for second moments)
u*: ok, +/- 0.04 m/s
sigma_w/u*: ok (1.3 at night)
tc'tc': ok, +/- 0.1 degC ^2
w'tc': ok, +/- 0.02 m/s degC
diag: ok
samples.sonic: undersampled sonic data 16:00-17:00, July 1
Upper (hts=4):
-------------
spd: ok, +/- 15 cm/s
dir: ok, +/- 5 deg; 6t is about 6.5 degrees off from profile sonic
w: ok, +/- 6 cm/s
tc: ok, +/- 0.25 deg
w'w': ok, +/- 0.01 m^2/s^2 (30 min avg for second moments)
u*: ok, +/- 0.04 m/s
sigma_w/u*: ok (1.3 at night)
tc'tc': ok, +/- 0.1 degC ^2
u*: ok, +/- 0.05 m/s
w'tc': ok, +/- 0.02 m/s degC
diag: ok
samples.sonic: undersampled sonic data 16:00-17:00, July 1