| Description: | Below is an overview from Mark Shafer of the automated quality
assurance results for the September 1997 Oklahoma Mesonet data.
1. WEBB RELH was flagged as suspect (badparm) from 09/26 - 10/07, but
it failed the range check on several other occasions - 09/06, 09/11, and
09/12. I suggest that anyone using the data from the 6th onward should
be cautious, but the flags in the QA files are reliable.
2. HUGO PRES first started showing up with suspect and warning flags on
the 20th, but was not flagged in badparm until the 30th (as 2 =
warning). It was previously flagged in badparm as suspect from 08/28 to
09/11, but the flag was cleared on the 11th. Because of the
intermittent nature of the problem, I advise not using HUGO PRES at all
during september.
3. WYNO PRES went bad on the 20th and was properly flagged
(immediately) in badparm, but it still influenced estimates for nearby
stations (BIXB, BRIS, BURB, CLAR, COPA, FORA, NEWK, NOWA, OILT, PAWN,
REDR, SKIA). None of these stations should have any flags on PRES from
the 20th onward, and anyone using our data should be advised that any
such flags (other than WYNO and HUGO) are erroneous. Any flags on PRES
prior to the 20th are believed to be accurate.
We have isolated the bug in the software which allowed the readings at
WYNO to influence the other stations, and have planned ways to eliminate
the problem, but we are in the midst of porting the QA code to C, and I
do not want to make changes until that process is complete. Hopefully,
a problem such as this will not recur until we can fix our code.
Sincerely,
Mark
OKLAHOMA MESONETWORK QUALITY ASSURANCE REPORT
for the month of September, 1997
Based upon observations taken at 1800 UTC each day
Prepared by Jerry Brotzge (jbrotzge@ou.edu)
================================================================================
Notes: Greetings all...as I'm now your new QA manager.
The Mesonet is now becoming one with nature. Last month, we had
spiders living in our T/RH shelters, worms and ants in our
barometer tubes, and gophers having their temp taken. In addition,
we had a lightning strike at BUFF and wet sensors at NORM.
Otherwise, a fairly quiet month. Some strange going ons w/the Mesonet
pressures. Net radiometer domes still are not cooperating.
Great news from the ARS though...nearly perfect.
================================================================================
TAIR (Air Temperature at 1.5 meters):
Current t-tkts: None
Added: None
Resolved: #1396 SALL Unable to detect problem at site, so
brought it into lab to test
TDEW/RELH (RH is measured at 1.5 meters):
Current t-tkts: #1292 HUGO Intercomparison revealed RH out of spec
~3W.R.T. test probe
#1472 IDAB There are unrealistic small-amplitude
variations in the data
#1507 WATO RH failed, 89to 0 467452n 5 minutes
#1511 WEBB RH has been reading greater than 104
at night.
Added: None
Resolved: #1428 WEAT Removed spider web from inside T/RH shelter
#1443 CATO Replaced sensor, output now looks good
#1461 WALT Mesocomp shows RH error > 3
#1500 BUFF Lightning damage repair
#1505 NORM Replaced sensor after getting wet
WDIR (Wind Direction at 10 meters):
Current t-tkts: #1496 BUFF Lightning Damage.
Added: None
Resolved: #1476 WEBB Reset wind monitor direction
#1485 FTCB Wind monitor found with a 0.3 deg error
WSPD (Wind Speed at 10 meters):
Current t-tkts: None
Added: None
Resolved: None
PRES/PALT (Sea level Pressure):
Current t-tkts: #1514 HUGO Pres appears too high,variable
#1526 WYNO Pres stuck for 18hrs
#1528 WOOD Automatic routines detected a problem
Added: None
Resolved: #1381 RING Replaced sensor
#1456 HUGO Worm/muck clogging the vent tube
#1473 MIAM Replaced sensor, no visible problem evident
#1475 TAHL Replaced sensor, no visible problem evident
#1477 PUTN Ants were living in the vent tube
#1481 NORM Baro wire not making a complete connection
#1498 WYNO Baro moved to battery box, wires/tube clean
SRAD (Incident Solar Radiation):
Current t-tkts: None
Added: None
Resolved: #1465 ELRE Mesocomp shows a 5 0.000000e+00rror in sensor
#1503 BUFF Lightning damage
RAIN:
Current t-tkts: #1469 TAHL Underreporting, drip test~44 (50 expected)
Added: None
Resolved: #1333 WALT Replaced gauge
#1502 BUFF Lightning damage
TA9M (Air Temperature at 9 meters):
Current t-tkts: None
Added: None
Resolved: None
WS2M (Wind Run at 2 meters):
Current t-tkts: None
Added: None
Resolved: #1460 WALT Sensor bent back perpendicular
TS10 (Soil temperature at 10 cm under native sod):
Current t-tkts: #1510 ERIC Sensor failure
Added: None
Resolved: #1501 BUFF Lightning damage
TB10 (Soil temperature at 10 cm under bare soil):
Current t-tkts: None
Added: None
Resolved: #1452 CHER Repaired suspect wire connecting to mux
#1453 CHER Repaired suspect wire
TS05 (Soil temperature at 5 cm under native sod):
Current t-tkts: None
Added: None
Resolved: None
TB05 (Soil temperature at 5 cm under bare soil):
Current t-tkts: #1497 GOOD Sensor failed.
Added: None
Resolved: None
TS30 (Soil temperature at 30 cm under native sod):`
Current t-tkts: #1525 WOOD Sensor failed, probable gopher damage.
Added: None
Resolved: #1433 HOBA Checked out okay, within range
#1468 HOBA Replaced sensor
-------------------------------------------------------------------------------
ARS QA REPORT
-------------------------------------------------------------------------------
TAIR (Air Temperature at 1.5 meters):
Current t-tkts: None.
Added: None.
Resolved: None.
TDEW/RELH (RH is measured at 1.5 meters):
Current t-tkts: None.
Added: None.
Resolved: None.
SRAD (Incident Solar Radiation):
Current t-tkts: None
Added: #A131 SRAD about 100W/m2 too low in monthly averaging
Resolved: None
RAIN:
Current t-tkts: None.
Added: None.
Resolved: None.
TS05 (Soil temperature at 5 cm under native soil):
Current t-tkts: None.
Added: None.
Resolved: None.
TS10 (Soil temperature at 10 cm under native sod):
Current t-tkts: None.
Added: None.
Resolved: None
TS15 (Soil temperature at 15 cm under native soil):
Current t-tkts: None.
Added: #A144 Monthly average 5C too high
Resolved: None.
TS30 (Soil temperature at 30 cm under native sod):
Current t-tkts: None.
Added: None.
Resolved: None.
Jerry Brotzge
October 7, 1997 |