| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 06/01/1998 | 0000 | 06/30/1998 | 2359 | Does not affect quality |
| Subject: | Overview of Automated QA - June 1998 |
| DataStreams: | sgp05okmX1.00, sgp15okmX1.00, sgp15okmX1.a1, sgp05okmX1.a1 |
| Description: | Below is an overview from Chris Fiebrich, the Mesonet QA manager
of the automated quality assurance results for the June 1998
Oklahoma Mesonet data.
The June Mesonet data have been posted to your server. The soil temperature
data was the hardest set of parameters to quality assure for this time
period (and it continues to be for July and August). A number of stations began
to reach 50+ C at the 5 cm level, so we felt it best to raise the maximum of
the range for the 5 cm soil temperatures both under sod and under bare
soil to 55 C. The hot, dry conditions also contributed to much greater than
normal variations in the observed soil temperatures, depending on the
presence of cracked ground and dead vegetation. We believe that in general
things are functioning well with these sensors. However, the automatic
spatial QA created a number of flags for the 5 and 10 cm soil temperatures.
Throughout the month, you may note a number of suspect flags on FTCB TS10,
FTCB TS05, TISH TS10, TISH TS05, TIPT TS05, NORM TS05, CHER TS10, MANG TS05,
LAHO TB05, BESS TB05, and BRIS TS05. Until the ground is able to recover from
the very dry conditions, we will be unable to determine whether or not these
sensors are slightly biased. Their data should be used with caution.
There are a few additional special events that were flagged by the automatic qa
that you may want to be aware of. These include:
1. SEIL PRES - June 4 Thunderstorm winds caused a significant pressure
drop. This data is believed to be true so you can ignore the flags.
2. DURA RELH, PRES, TS10, TB10, TS05, and TB05 - June 4 The Durant site
suffered storm damage and was down for about 24 hours. The data should be
used with caution through June 5 as repairs were made at the site.
3. BRIS RELH - June 8/9 flags were caused by a wet sensor; the flags are
correct and there is no need for continuning concern after the event.
4. WEAT TAIR - June 8 Thunderstorm outflow caused the WEAT site to be
spatially off with respect to its neighboring sites. You can ignore the
flags.
5. GRAN TAIR/RELH - June 8 Rainshower caused the relative humidity at GRAN to
be spatially off with respect to neighboring sites. You can ignore the
flags.
6. WALT WSPD - June 10 flags caused by thunderstorm winds. You can ignore
the flags.
7. MARE RELH - June 14 Rainfall caused the sensor to be wet, and report
erroneously from 0100-1000 UTC. The data is good otherwise.
8. RING TAIR, WMAX, and PRES; TALI WSPD June 19 - These flags were all
attributed to observations during thunderstorms. We believe the data is
good, and you can ignore the flags.
9. NORM RELH June 20 - Heat burst caused the relative humidity at NORM
to be spatially inconsistent with neighboring sites. You can ignore
the flags.
10. RETR RELH/TAIR June 22 - Another thunderstorm event. You can dis-
regard those flags.
-Chris
=============================================================================
OKLAHOMA MESONETWORK/ARS QUALITY ASSURANCE REPORT
for the month of June, 1998
Based upon observations taken at 1800 UTC each day
Prepared by Chris Fiebrich (chris@mesnet.mesonet.ou.edu)
================================================================================
The Durant site suffered storm damage on June 4. Communications were lost to
the station for about 24 hours. The datalogger, radio, and modem each had to
be replaced.
The new site at Vanoss was up and running on June 17. The site currently
measures all of the core and supplemental parameters with the exceptions of
pressure and soil moisture.
Over the past couple of weeks, the Norman site has been upgraded to the
new OASIS configuration for NCAR ASTER comparison.
And last, but not least, the ARS station A157 is currently in the process of
being moved to a location NNE of the old site.
And now, on to the report...
================================================================================
TAIR Current: #1897 MCAL Sensor reporting 1-3 obs daily of -7999
Added: None
Resolved: None
RELH Current: #1731 CLAY Sensor reporting -7999 on various occassions
#1810 KING Monthly QA shows 1.5 - 2.0 C TDEW warm bias
#1814 MARS Sensor reporting as high as 110%
#1872 KETC Sensor reported 0 0.000000or over 22 hours
Added: None
Resolved: #1824 HOBA Sensor reporting -7999 replace
#1669 MADI Sensor reporting -7999 replaced
#1864 DURA Sensor reporting 0% replaced
#1873 BRIS Erratic sensor replaced
WDIR Current: #1901 OKMU 70 to 120 degrees out of phase
Added: None
Resolved: None
WSPD Current: None
Added: #1913 SPEN Low wind gusts during severe storm event
Resolved: None
PRES Current: None
Added: #1915 SKIA Monthly QA indicates 1.0 mb high bias
#1916 BUTL Monthly QA indicates 1.0 mb low bias
Resolved: #1751 ALTU Malfunctioning sensor replaced
SRAD Current: #1839 HOOK Reporting -1 for extended periods at night
#1903 CHAN Frequent large dips in data being observed
Added: #1917 KING Monthly QA indicates SRAD ~100 W/m^2 low
Resolved: None
RAIN Current: None
Added: None
Resolved: #1880 ARDM Stuck bucket repaired
TA9M Current: None
Added: None
Resolved: None
WS2M Current: None
Added: None
Resolved: #1883 MARE Noisy bearings replaced
TS10 Current: None
Added: None
Resolved: #1833 FAIR Gopher-damaged sensor replaced
#1777 MEDI Sensor with warm bias replaced
TB10 Current: #1779 WILB Monthly QA suggests 4 C cool bias
Added: None
Resolved: None
TS05 Current: #1847 SHAW Data suggests 3-6 C cool bias
Added: None
Resolved: None
TB05 Current: #1808 WOOD Monthly QA suggests possible 4 C warm bias
#1878 PAUL Sensor reporting values below 0 C
#1899 IDAB Sensor reporting over 50 C
Added: None
Resolved: None
TS30 Current: None
Added: None
Resolved: #1704 EUFA Lightning-damaged sensor replaced
-------------------------------------------------------------------------------
ARS QA REPORT
-------------------------------------------------------------------------------
TAIR Current: None
Added: None
Resolved: None
RELH Current: None
Added: None
Resolved: None
SRAD Current: None
Added: None
Resolved: #1848 A131 Erratic sensor replaced
RAIN Current: None
Added: None
Resolved: #1876 A133 Replaced defective switch
TS05 Current: #1918 A159 Sensor reporting values of 80+ C in PM
#1919 A160 Sensor reporting ~15 C too warm during PM
Added: None
Resolved: #1816 A148 Sensor reporting ~25 C too warm replaced
#1849 A123 Large tree cut down which may have shaded
#1896 A158 Cool bias found to be site specific
#1902 A150 High, thick grass shading sensor was cut
TS10 Current: None
Added: None
Resolved: None
TS15 Current: None
Added: None
Resolved: None
TS30 Current: None
Added: None
Resolved: #1825 A147 Sensor reporting ~15 C too warm replaced
==============================================================================
LEGEND
TAIR Air Temperature measured at 1.5 meters
RELH Relative Humidity measured at 1.5 meters
WDIR Wind Direction measured at 10 meters
WSPD Wind Speed measured at 10 meters
PRES Pressure
SRAD Incident Solar Radiation
RAIN Rainfall
TA9M Air Temperature measured at 9 meters
WS2M Wind Speed measured at 2 meters
TS10 Soil Temperature measured at 10 cm under native sod
TB10 Soil Temperature measured at 10 cm under bare soil
TS05 Soil Temperature measured at 5 cm under native sod
TB05 Soil Temperature measured at 5 cm under bare soil
TS15 Soil Temperature measured at 15 cm under native sod
TS30 Soil Temperature measured at 30 cm under native sod
==============================================================================
Chris Fiebrich
July 8, 1998 |
| Suggestions: | Users of these data should obtain the detailed quality assurance information from ARM |
| Measurements: | sgp05okmX1.a1: more
sgp05okmX1.00: more sgp15okmX1.a1: more sgp15okmX1.00: more |