| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 12/01/1998 | 0000 | 12/31/1998 | 2359 | Does not affect quality |
| Subject: | SGP/OKM - Overview of Automated QA - December 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 December 1998
Oklahoma Mesonet data.
here are a number of special events that were flagged by the automatic
qa that you may want to be aware of. The most noteworthy problem
is the inversion-poking that occurred at CHEY and MEDI frequently
throughout the month. CHEY and MEDI's elevation cause them to poke
above the inversion layer during some nights and mornings, and their
temperature and relative humidity values are often much different than
neighboring stations. You can disregard the flags that the spatial
tests put on these stations when "inversion poking" is noted.
Here's the breakdown:
Date Station Parameter(s)
---- ------- ------------
12/01 CHEY TAIR - Inversion poking
12/13 MEDI RELH,TAIR - Inversion poking
12/14 CHEY RELH,TAIR - Inversion poking
MEDI TAIR - Inversion poking
12/16 CHEY TAIR - Inversion poking
MEDI TAIR - Inversion poking
12/17 MEDI TAIR - Inversion poking
12/18 WIST RELH,TAIR - Cold-air drainage at this low-lying
site caused it to be spatially inconsis-
tent with neighboring stations; ignore
the flags.
12/24 BBOW WS2M - Completely calm conditions held the wind
speed at 2-m at 0.0 m/s all day long;
this caused our persistence program to
flag the data. Disregard the flags.
12/26 CHEY TAIR - Inversion poking
12/27 BBOW WS2M - Same as 12/24
12/28 CHEY TAIR - Inversion poking
12/29 CHEY TAIR - Inversion poking
MEDI TAIR, RELH - Inversion poking
-Chris Fiebrich
Mesonet QA Manager
=========================================================================
OKLAHOMA MESONETWORK/ARS QUALITY ASSURANCE REPORT
for the month of December, 1998
Based upon observations taken at 1800 UTC each day
Prepared by Chris Fiebrich (qamgr@redrock.ocs.ou.edu)
=========================================================================
Notes:
Icy conditions stopped 16 of the Mesonet's 2-m wind monitors dead in
their tracks beginning on December 20. Every single station in the
Panhandle and northwest section of the state observed 0 m/s winds at 2 m
for anywhere from 3 to 5 days straight. 2-m wind observations were also
affected in the northeast and southeast sections of the state where many
wind sentries froze there, also.
And now, on to the report...
=========================================================================
TAIR Current: #2181 ALV2 Sensor reporting frequent -7999 obs
Added: #2189 SLAP Monthly QA indicates 1.5 C warm bias
Resolved: None
RELH Current: #2144 MANG Monthly QA indicates max observed too
low
#2151 RING Sensor reporting ~30% too low
#2173 SEIL Sensor reporting values as low as 0%
Added: #2190 PRYO Monthly QA indicates 1 C warm TDEW
bias
Resolved: #2168 HASK Failed mesocomp; sensor replaced
WDIR Current: None
Added: None
Resolved: None
WSPD Current: #2178 BREC Sensor stuck at 0.0 m/s for extended
time periods
#2180 ALV2 Sensor stuck at 0.0 m/s continuously
Added: None
Resolved: #2158 STUA Replaced sensor with low bias
#2165 CLAY Prop remounted
#2175 PRYO Replaced nose assembly
PRES Current: None
Added: #2186 SLAP Monthly QA indicates 1.0 mb low bias
Resolved: None
SRAD Current: None
Added: None
Resolved: None
RAIN Current: None
Added: None
Resolved: #2166 EUFA Replaced dead gauge switch
#2172 SKIA Replaced defective switch
TA9M Current: None
Added: None
Resolved: None
WS2M Current: None
Added: None
Resolved: None
TS10 Current: #2161 FAIR Sensor reporting constant -219.3 C
Added: #2188 HINT Monthly QA indicates 2-3 C cool bias
Resolved: None
TB10 Current: #2183 WYNO Sensor reporting 15 C low bias
Added: None
Resolved: None
TS05 Current: #2160 FAIR Sensor reporting constant -57.3 C
Added: #2187 HINT Monthly QA indicates 2 C cool bias
Resolved: None
TB05 Current: #2015 ELRE Sensor reporting 2 C warmer than
neighboring stations
Added: #2185 BRIS Monthly QA indicates 3-4 C warm bias
Resolved: None
TS30 Current: #2157 TIPT Sensor reporting constant -56.0 C
Added: #2184 FTCB Monthly QA indicates 1-2 C cool bias
Resolved: None
------------------------------------------------------------------------
ARS QA REPORT
------------------------------------------------------------------------
TAIR Current: None
Added: None
Resolved: None
RELH Current: #2179 A155 Sensor reports as high as 105 0uring
conditions of hight relative humidity
Added: None
Resolved: None
SRAD Current: None
Added: None
Resolved: None
RAIN Current: None
Added: None
Resolved: None
TS05 Current: None
Added: #2194 A164 Monthly QA indicates 2 C warm bias
Resolved: None
TS10 Current: None
Added: #2193 A162 Monthly QA indicates 1-2 C cool bias
Resolved: None
TS15 Current: None
Added: #2195 A158 Monthly QA indicates 2 C warm bias
#2192 A162 Monthly QA indicates 2 C cool bias
Resolved: None
TS30 Current: None
Added: #2191 A162 Monthly QA indicates 2-3 C cool bias
Resolved: None
========================================================================
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
=========================================================================== |
| 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 |