DQRID : D980710.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/01/1998000005/31/19982359Does not affect quality
more
Subject:
Overview of Automated QA - May 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 May 1998
Oklahoma Mesonet data.


The May Mesonet data have been posted to your server.  There are a few
special events that were flagged by the automatic qa that you may want
to be aware of.  These include:

1.  HOLL PRES - May 8 Thunderstorm winds caused a significant pressure
drop.  This data is accurate so you can ignore the flags.

2.  BESS RELH - May 21 A heat burst was measured at the site.  It was a fairly
localized event so the spatial test flagged the data.  You can disregard those
flags.

3.  MAYR & NEWK WSPD, WVEC - Thunderstorm outflow produced 40+ mph sustained 
wind observations on the 24th and 25th.  This data is believed to be true 
and you can ignore those flags.

4.  FORA RAIN - May 25 The site received nearly double the amount of rainfall
as its neighboring sites.  Radar confirmed this, so we believe the data to
be good.
 
5.  BRIS RELH - May 26 flags were from a wet sensor; the flags are
correct and there is no need for continuning concern after the event.

6.  CLAY WSPD, WVEC - May 26 flags were caused by strong winds reported
at the site during a thunderstorm.  You can ignore these flags.

-Chris



       OKLAHOMA MESONETWORK/ARS QUALITY ASSURANCE REPORT
       for the month of May, 1998

       Based upon observations taken at 1800 UTC each day

       Prepared by Chris Fiebrich (chris@mesnet.mesonet.ou.edu)

================================================================================

A number of pressure problems were corrected during the month of May.
Malfunctioning barometers at ALTU and SEIL were replaced, and the barometer
tubes at ANTL and STUA were 'de-wormed' (to quote Gary) to correct problems
there.

The SRAD field was also improved by replacing malfunctioning sensors at
TULL, OKMU, and WYNO during the month of May.

Some of the soil temperature sensors at BRIS and FAIR fell victim to gopher
damage last month.  Those sensors were replaced.

The monthly QA detected a handful of possible biases in the soil sensors in
both the ARS and MESO networks.  Those stations included KETC, SHAW, A148, and
A157.  Those sensors will be investigated in the coming weeks.

================================================================================

TAIR    Current:        None
        Added:          None
        Resolved:       #1780 MAYR Instrument replaced

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%
        Added:          None
        Resolved:       #1824 HOBA Sensor replaced

WDIR    Current:        None
        Added:          None
        Resolved:       #1770 TULL Sensor replaced due to vandalism

WSPD    Current:        None
        Added:          None
        Resolved:       #1826 FORA Noisy bearings replaced

PRES    Current:        None
        Added:          None
        Resolved:       #1751 ALTU Sensor replaced
                        #1809 SEIL Sensor replaced
                        #1820 ANTL Replaced worm-clogged barometer tube
                        #1836 STUA Replaced worm-clogged barometer tube

SRAD    Current:        #1839 HOOK Reporting -1 for extended periods at night
                        #1843 GRAN Reporting values ~70% too low
        Added:          None
        Resolved:       #1761 TULL Sensor replaced after vandalism
                        #1765 OKMU Sensor replaced to correct 10% bias
                        #1781 MAYR Sensor reporting <0 due to bad TAIR switch
                        #1802 WYNO Sensor replaced

RAIN    Current:        None
        Added:          None
        Resolved:       #1818 PRES New switch installed to fix under-reporting
                        #1829 CAMA Gauge with bucket off bearings replaced
                        #1799 COPA New switch installed to fix under-reporting

TA9M    Current:        None
        Added:          None
        Resolved:       None

WS2M    Current:        None
        Added:          None
        Resolved:       None

TS10    Current:        None
        Added:          None
        Resolved:       #1790 BRIS Gopher damage; sensor replaced
                        #1777 MEDI Sensor replaced to correct warm bias
                        #1833 FAIR Replaced gopher-damaged sensor

TB10    Current:        #1779 WILB Monthly QA suggests 4 C cool bias
        Added:          None
        Resolved:       #1782 MAYR Sensor replaced

TS05    Current:        None
        Added:          #1846 KETC Monthly QA suggests 2-3 C cool bias
                        #1847 SHAW Monthly QA suggests 3-6 C cool bias
        Resolved:       #1811 BRIS Gopher damage; sensor replaced

TB05    Current:        #1808 WOOD Monthly QA suggests possible 4 C warm bias
        Added:          #1845 KETC Monthly QA suggests 2-3 C warm bias
        Resolved:       None

TS30    Current:        #1704 EUFA Sensor reporting -9999 due to lightning
        Added:          None
        Resolved:       None

-------------------------------------------------------------------------------
                                ARS QA REPORT
-------------------------------------------------------------------------------

TAIR    Current:         None
        Added:           None
        Resolved:        None

RELH    Current:         None
        Added:           None
        Resolved:        #1813 A182 Sensor replaced

SRAD    Current:         None
        Added:           #1848 A131 Obs too low after sunrise and before sunset
        Resolved:        None

RAIN    Current:         None
        Added:           None
        Resolved:        #1830 A111 Reed switch changed

TS05    Current:         #1816 A148 Monthly QA suggests possible 2-4 C warm bias
                         #1817 A157 Monthly QA suggests possible 2 C cool bias
        Added:           #1849 A123 PM readings are ~10 C cooler than neighbors
        Resolved:        None

TS10    Current:         #1831 A157 Spatial QA shows a possible 8 C cool bias
        Added:           None
        Resolved:        #1815 A166 2 C cool bias found; sensor replaced

TS15    Current:         None
        Added:           None
        Resolved:        None

TS30    Current:         #1825 A147 Sensor reporting ~5 C too warm
        Added:           None
        Resolved:        #1834 A166 Sensor 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 5, 1998
Suggestions: 
Users of these data should obtain the detailed quality
assurance information from ARM
Measurements:sgp05okmX1.a1:
  • alt
  • prec_amt
  • wvec_10m
  • time_offset
  • pres
  • wspd_sigma
  • wspd_10m
  • wdir_10m
  • tdry_1_5m
  • base_time
  • lon
  • wspd_max
  • wspd_2m
  • rh
  • tdry_9m
  • srad
  • wdir_sigma
  • lat
more
sgp05okmX1.00:
  • Raw data stream - documentation not supported
more
sgp15okmX1.a1:
  • leaf_ind
  • alt
  • tsoil5
  • tsoil10
  • tbare5
  • vbat
  • base_time
  • lon
  • tbare10
  • tbare30
  • time_offset
  • lat
more
sgp15okmX1.00:
  • Raw data stream - documentation not supported
more

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