DQRID : D980917.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/01/1998000007/31/19982359Does not affect quality
more
Subject:
Overview of Automated QA - July 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 July 1998
Oklahoma Mesonet data.

The soil temperature data was the hardest set of parameters to quality 
assure for this time period.  As we well remember, July was extremely hot 
and dry across the state.
The soil temperatures under native sod caused the most problems.  Many SOD
plots essentially became BARE plots as vegetation slowly provided less 
and less insulation from the heat.  This caused the automatic spatial QA to
flag a number of stations during the hot afternoons.  These stations include:
MANG TS05, NORM TS05, TIPT TS05/TS10, FTCB TS05/TS10/TS30, and BRIS TS05.
We believe that these sensors are ok, and did not include them in our 
badparm table.  However, you may notice some 'suspect' flags on them from 
the automatic QA.

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.  BOIS RELH - (July 1) flags were caused by a wet sensor; the flags are
correct and there is no need for continuning concern after the event.

2.  BOWL and MTHE TAIR - (July 2) Thunderstorm outflow caused these sites 
to
be spatially off with respect to neighboring sites.  You can ignore the 
flags.

3.  MINC WSPD/WVEC/WMAX and PAWN WMAX - (July 8) Strong thunderstorms 
produced
wind gusts over 40 mph at these sites.  We believe this data to be 
correct,
and you can ignore the flags.

4.  MAYR TAIR/WSPD - (July 10) Thunderstorms caused these flags.  
Disregard
the flags.

5.  CAMA SRAD - (July 17 through July 31) Lightning occurred at the site 
on
July 17.  Ever since then, the solar radiation has been reporting slightly
negative readings overnight (usually -1).  Otherwise, the data is fine, 
and you
can disregard the flags.

6.  ARNE RELH/TAIR - (July 24 and 26) Thunderstorm outflow caused this 
site to
be spatially inconsistent with neighboring sites.  You can disregard the 
flags.

7. BREC TAIR - (July 25) Thunderstorm outflow cooled this site down and 
caused
the QA flags.  You can ignore the flags. 

-Chris

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

       Based upon observations taken at 1800 UTC each day

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

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

Soil temperature sensors have been the hardest to quality assure over the
past month.  Due to the daily occurrence of many soil sensors reaching 
50+ C
(for the first time in the Mesonet's history!), we raised the maximum 
range
on the 5 cm bare and sod sensors to 55 C.

The prescence of dry, cracked ground in many locations has also 
contributed
to much greater than normal variations in the observed soil temperatures 
at
neighboring sites.

The hotspot:  The monthly-averaged Air Temperature field for 1800 UTC 
revealed
Walters, OK as the hottest location.  WALT's average 1800 UTC temperature
was 37.3 C (99.1 F).  Not only did WALT have the highest average 1800 UTC
temperature, but the average high at WALT for the month was 104.7! (thanks
for that fact, Derek).

And now, on to the report...
===========================================================================
=====

TAIR    Current:        #1974 SPEN Reporting 5-10 F too warm
        Added:          None
        Resolved:       #1961 WOOD Lightning strike; replaced sensor
                        #1897 MCAL Replaced sensor with frequent -7999 
reports

RELH    Current:        #1814 MARS Sensor reporting as high as 110%
        Added:          None
        Resolved:       #1872 KETC Replaced sensor with extended 0% RELH 
reports
                        #1948 WOOD Replaced lightning-damaged sensor      
      
                        #1900 MARE Replaced sensor that reported 20-30% 
dips
                        #1810 KING Large spider web removed from cap
                        #1968 WIST Replaced sensor reporting data spikes 
daily
                        #1731 CLAY Replaced sensor with frequent -7999 
reports

WDIR    Current:        None
        Added:          None
        Resolved:       #1901 OKMU Replaced sensor reporting ~80 out of 
phase
                        #1964 CAMA Replaced lightning-damaged sensor
                        #1966 WOOD Replaced lightning-damaged sensor
                        #1951 CLAY Replacing CR10T corrected continuous 
0.0
                              WDIR reports

WSPD    Current:        #1913 SPEN Low wind gusts during severe storm 
event
        Added:          None
        Resolved:       #1967 WOOD Replaced sensor to correct high bias   
                              WSPD reports

PRES    Current:        None
        Added:          None
        Resolved:       #1877 ALVA Replaced malfunctioning sensor         
      
                        #1915 SKIA Replaced sensor suspect of 1.0 mb high 
bias
                        #1916 BUTL Replaced sensor suspect of 1.0 low bias

SRAD    Current:        #1839 HOOK Reporting -1 for extended periods at 
night
                        #1965 IDAB Sensor reporting ~500f expected 
values
        Added:          #1987 OKMU Sensor reporting ~150 W/M^2 low during 
pm
        Resolved:       #1843 GRAN Sensor began reporting normal values 
after
                                   being rain-washed
                        #1960 CAMA Replaced lightning-damaged sensor
                        #1963 WOOD Replaced lightning-damaged sensor
                        #1903 CHAN "Deep" bird droppings removed which 
shaded
                                   sensor
                        #1917 KING "Large" bird droppings removed which 
shaded
                                   sensor

RAIN    Current:        #1972 CHEY Sensor suspected of over-reporting 
rainfall
                        #1984 MIAM Sensor suspected of under-reporting 
rainfall
        Added:          None
        Resolved:       #1954 CALV Irrigation system on nearby farm 
causing
                              rainfall reports.

TA9M    Current:        None                                              
      
        Added:          #1989 HUGO Monthly QA suggests 2 C cool bias
        Resolved:       None

WS2M    Current:        None
        Added:          None
        Resolved:       #1952 CLAY New CR10T corrected continuous 0.0 WS2M
                              reports

TS10    Current:        None
        Added:          None
        Resolved:       None

TB10    Current:        #1779 WILB Monthly QA suggests 4 C cool bias      
      
                        #1970 NINN Sensor reporting 8 C cooler than 
neighbors
        Added:          None
        Resolved:       #1959 FTCB Erosion at site caused readings too 
warm

TS05    Current:        #1847 SHAW Data suggests 3-6 C cool bias
        Added:          #1988 EUFA TB05 reporting cooler than TB10
        Resolved:       #1846 KETC Suspected cool bias found to be not 
true

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
                        #1971 NINN Sensor reporting 8-10 C cooler than 
neighbors
        Added:          None
        Resolved:       #1845 KETC Sensor found to have ~3 C warm bias
                        #1958 FTCB Erosion at site caused readings too 
warm

TS30    Current:        #1956 SHAW Data suggests TS05 and TS30 wires are 
crossed
        Added:          None
        Resolved:       None

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

TAIR    Current:         None
        Added:           None
        Resolved:        None

RELH    Current:         None                                             
      
        Added:           None
        Resolved:        #1947 A151 Sensor found out of calibration 
replaced
                         #1928 A110 Replaced sensor that failed 
meso-comparison

SRAD    Current:         None
        Added:           None
        Resolved:        None

RAIN    Current:         None
        Added:           None
        Resolved:        None

TS05    Current:         #1924 A157 Awaiting new sensor after site move
        Added:           None
        Resolved:        #1919 A160 Sensor found to be 13 C too high
                         #1918 A159 Sensor found to be 4 C too high
                         #1920 A156 Sandy soil found to be cause of warm 
bias

TS10    Current:         #1927 A157 Awaiting new sensor after site move
        Added:           None
        Resolved:        None
                                                                          
      
TS15    Current:         #1926 A157 Awaiting new sensor after site move
                         #1957 A146 Sensor reporting sporadically to -10 C
        Added:           None
        Resolved:        None

TS30    Current:         #1925 A157 Awaiting new sensor after site move
        Added:           None
        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

===========================================================================
===
Chris Fiebrich
August 10, 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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