Quality Assurance Overview for November 1996

Discussion by Mark Shafer of results of automated quality assurance
runs for November 1996 data.

As far as the November qa goes, it looks like it performed well.  A couple
of things to note are:
(1) CLAR (Claremore) data may be a bit suspicious at times throughout
    November - battery voltage was conistently reporting low, and low
    power could possibly affect sensor performance.  I did not see any
    evidence of such an effect, but I thought I would caution you on this
    station.
(2) I believe we may have had an icing event on November 13-14 and 19-20
    (at least a minor event).  The persistence routine flagged several
    stations for low variability in the data on WSSD and RELH.  If the
    Wind monitor gets iced, Wind Speed Standard Deviation will be zero,
    thus triggering the persistence check.

Otherwise, things looked like they were flagged properly.  There are still
some sites where inversions may be flagged as suspect (notably MEDI and
CHEY) and some wind directions are flagged as suspect, but I did not notice
any erroneous warning or failure flags.

Users of these data should review the automatically generated
quality asssurance files

• -180.0 - +180.0(alt)
• accumulated rainfall since 00GMT except at 00 GMT, the number given is the total
  accumulation for the past 24 hours(prec_amt)
• vector average wind magnitude(wvec_10m)
• Time offset from base_time(time_offset)
• Retrieved pressure profile(pres)
• standard deviation of wind speed(wspd_sigma)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• vector average of wind direction measured at 10m(wdir_10m)
• air temperature at 1.5m(tdry_1_5m)
• base time in epoch(base_time)
• lon(lon)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• average wind speed at 2m(wspd_2m)
• Relative Humidity (hybrid-b grid)(rh)
• air temperature at 9m(tdry_9m)
• solar radiation(srad)
• standard deviation of wind direction(wdir_sigma)
• North Latitude(lat)

• leaf wetness index, measurement of dew ranging from 0 (dry) to 100(wet)(leaf_ind)
• -180.0 - +180.0(alt)
• soil temperature at 5 cm beneath natural sod cover(tsoil5)
• 10 cm soil temp(tsoil10)
• soil temperature at 5 cm beneath bare soil(tbare5)
• Average battery voltage(vbat)
• base time in epoch(base_time)
• lon(lon)
• soil temperature at 10cm beneath bare soil(tbare10)
• soil temperature at 30 cm beneath bare soil(tbare30)
• Time offset from base_time(time_offset)
• North Latitude(lat)