AHATS daily status 7/16/08
Staff: Semmer, Horst, McIntyre, Khoung
For more details, see the ahats logbook at https://wiki.ucar.edu/display/ahatslogbook
Good wind direction: From July 11, 12:00, through July 16, 12:00, we have
had 61.08 hours or 51% good wind directions with continuous periods
of at least 25 minutes. This includes 43.33 hours stable data and
16.92 hours unstable. Note that more than half of the stable data
is weakly stable, 0 < z/L < 0.1. With the exception of this near-neutral
data, the balance between stable and unstable is more closely balanced
than the numbers suggest.
Local data storage:
------------------
root@upwind root# df | grep usb
/dev/sda1 57685532 2377044 55308488 4% /var/tmp/usbdisk
root@downwind1 root# df | grep usb
/dev/sda1 57685532 2878296 54807236 5% /var/tmp/usbdisk
root@downwind2 root# df | grep usb
/dev/sda1 57685532 3114884 54570648 5% /var/tmp/usbdisk
root@profile root# df | grep usb
/dev/sda1 57685532 1951096 55734436 3% /var/tmp/usbdisk
root@pressure1 root# df | grep usb
/dev/sda1 3897204 630656 3266548 16% /var/tmp/usbdisk
root@pressure2 root# df | grep usb
/dev/sda1 3940812 630240 3310572 16% /var/tmp/usbdisk
Pressure:
--------
(+/- = ~1 std deviation among variables at the same height)
p: ok, +/- 0.02 mb
p'p': ok, +/- 0.002 mb^2
w'p': ok, +/- 0.002 m/s mb
t: ok, +/- 0.3 degC
Pref: ok, range = +/- 2 mb, with a period of ~24 hours
Profile:
--------
h2o: ok, 13 gm/kg
w'h2o': ok, 0.02 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