Overview of Quality Assurance Runs for September 1996

Review of automated quality assurance runs for September 1996 by
Mark Shafer:
I noticed
a couple of problems you might want to keep an eye out for.  The
10-cm soil temperature under sod (TS10) at MARS (Marshall) appeared
suspicious the entire month.  A trouble ticket was issued at the end
of the month (Sep. 24), but I would be cautious with that sensor from
at least September 1.  The other concern is Pressure (PRES) at BUFF
(Buffalo).  10 suspect flags were set by the automated QA on Sep. 18,
5 failures on Sep. 25, and 182 failures plus one suspect flag on
Sep. 26.  I searched the files I had previously delivered to you   
(October - January), but did not find a persistent problem.  The
sensor may have been replaced when the failures were noted on the
26th.  Other than these two exceptions, the data appear good.

Users of these data should review the automated quality assurance
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)