Data Quality Reports for Session: 152448 User: wharton4 Completed: 08/20/2013


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020313.1SGP/THWAPS/C1 - THWAPS C1 miscalibratedsgpthwapsC1.a1, sgpthwapsC1.b1
D030917.21SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problemssgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1,
sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1,
sgpthwapsC1.b1
D041123.1SGP/THWAPS/C1 - RH Sensor CalibrationsgpthwapsC1.b1
D050812.10SGP/THWAPS/C1 - Minor bias in humiditysgpthwapsC1.a1, sgpthwapsC1.b1
D050812.12SGP/THWAPS/C1 - Minor bias in saturation vapor pressuresgpthwapsC1.b1
D070613.2SGP/RAIN/C1 - Funnel cloggedsgprainC1.b1
D080116.24SGP/THWAPS/C1 - RH Data IncorrectsgpthwapsC1.b1
D090211.2SGP/THWAPS/C1 - Barometer intermittentsgpthwapsC1.b1
D090306.1SGP/THWAPS/C1 - Time stamp of data record incorrectsgpthwapsC1.b1
D090824.2SGP/THWAPS/C1 - Wind speed incorrectsgpthwapsC1.b1
D110724.1SGP/RAIN/C1 - Incorrect precipitation measurementssgprainC1.b1
D111027.1SGP/RAIN/C1 - Missing datasgprainC1.b1
D120113.5SGP/RAIN/C1 - Reprocess: Incorrect datestampsgprainC1.b1
D120301.2SGP/RAIN/C1 - Lightning strikesgprainC1.b1
D130617.2SGP/RAIN/C1 - Instrument problemsgprainC1.00, sgprainC1.b1, sgprainauxC1.00, sgprainauxC1.b1
D130711.1SGP/THWAPS/C1 - T/RH sensor failuresgpthwapsC1.b1
D991008.1SGP/THWAPS - RH values low by factor of 1.1sgpthwapsC1.a1, sgpthwapsC1.b1, sgpthwapsC1.00, DsgpthwapsC1.a1, DsgpthwapsC1.b1


DQRID : D020313.1
Start DateStart TimeEnd DateEnd Time
03/09/2002034004/23/20021418
Subject:
SGP/THWAPS/C1 - THWAPS C1 miscalibrated
DataStreams:sgpthwapsC1.a1, sgpthwapsC1.b1
Description:
Power outages apparently led to the THWAPS HMP233 temperature and RH sensor
being replaced at C1.  The power went out at 0340 on 3/9 was restored at
0635 and went out again at 2025.

The new HMP233 appears to be incorrectly calibrated and all temperature
data since its installation are wrong.  If I am correct about the nature
of the calibration problem, the true average temperature can be recovered
from that recorded by a linear conversion, but I don't think its worth the
trouble.
Measurements:sgpthwapsC1.b1:
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Temperature, air(temp)
  • Humidity, relative(rh)

sgpthwapsC1.a1:
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • Humidity, relative(rh)
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • Temperature, air(temp)


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DQRID : D030917.21
Start DateStart TimeEnd DateEnd Time
03/09/2002205503/11/20022005
03/13/2002175503/14/20021505
Subject:
SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems
DataStreams:sgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1,
sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1,
sgpthwapsC1.b1
Description:
Data are missing due to power failures caused by an ice storm
and resulting system/instrument clock problems.
Measurements:sgpthwapsC1.b1:
  • alt
  • Mean Wind Speed(wspd)
  • lon
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • base_time
  • Temperature, air(temp)
  • Unit Vector Wind Direction(wdir)
  • time_offset
  • sd_vap_pres
  • sd_wdir
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • sd_pres
  • Humidity, relative(rh)
  • vbat
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • lat

sgpthwapsB5.00:
  • Raw data stream - documentation not supported

sgpthwapsC1.a1:
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Temperature, air(temp)
  • sd_vap_pres
  • vbat
  • lon
  • alt
  • time_offset
  • Humidity, relative(rh)
  • base_time
  • sd_wdir
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • sd_pres
  • Unit Vector Wind Direction(wdir)
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • lat
  • Mean Wind Speed(wspd)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)

sgpthwapsB6.a1:
  • sd_pres
  • sd_wdir
  • Mean Wind Speed(wspd)
  • base_time
  • lon
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • vbat
  • Temperature, air(temp)
  • Unit Vector Wind Direction(wdir)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • sd_vap_pres
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Humidity, relative(rh)
  • lat
  • time_offset
  • alt

sgpthwapsC1.00:
  • Raw data stream - documentation not supported

sgpthwapsB6.b1:
  • Humidity, relative(rh)
  • base_time
  • sd_pres
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • vbat
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • sd_wdir
  • Unit Vector Wind Direction(wdir)
  • lon
  • Mean Wind Speed(wspd)
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • Temperature, air(temp)
  • time_offset
  • alt
  • sd_vap_pres
  • lat

sgpthwapsB1.00:
  • Raw data stream - documentation not supported

sgpthwapsB1.b1:
  • Mean Wind Speed(wspd)
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • sd_vap_pres
  • lat
  • Humidity, relative(rh)
  • Unit Vector Wind Direction(wdir)
  • Temperature, air(temp)
  • time_offset
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • lon
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • sd_wdir
  • vbat
  • alt
  • base_time
  • sd_pres

sgpthwapsB1.a1:
  • sd_wdir
  • lat
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • base_time
  • Humidity, relative(rh)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • time_offset
  • Temperature, air(temp)
  • sd_pres
  • lon
  • vbat
  • sd_vap_pres
  • Unit Vector Wind Direction(wdir)
  • alt
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • Mean Wind Speed(wspd)

sgpthwapsB6.00:
  • Raw data stream - documentation not supported

sgpthwapsB5.a1:
  • lon
  • Mean Wind Speed(wspd)
  • lat
  • Unit Vector Wind Direction(wdir)
  • Humidity, relative(rh)
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • base_time
  • sd_pres
  • vbat
  • time_offset
  • alt
  • sd_vap_pres
  • Temperature, air(temp)
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • sd_wdir
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)

sgpthwapsB5.b1:
  • lon
  • sd_pres
  • vbat
  • sd_vap_pres
  • Humidity, relative(rh)
  • Unit Vector Wind Direction(wdir)
  • time_offset
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • alt
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • lat
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • Temperature, air(temp)
  • sd_wdir
  • base_time
  • Mean Wind Speed(wspd)


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DQRID : D041123.1
Start DateStart TimeEnd DateEnd Time
11/16/2004213511/29/20041930
Subject:
SGP/THWAPS/C1 - RH Sensor Calibration
DataStreams:sgpthwapsC1.b1
Description:
The analog output for the T/RH probe was incorrectly calibrated.  This
caused excessively high readings of RH.
Measurements:sgpthwapsC1.b1:
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • sd_vap_pres
  • Humidity, relative(rh)


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DQRID : D050812.10
Start DateStart TimeEnd DateEnd Time
09/21/1999000012/07/19991100
Subject:
SGP/THWAPS/C1 - Minor bias in humidity
DataStreams:sgpthwapsC1.a1, sgpthwapsC1.b1
Description:
The THWAPS humidity sensor output was scaled so that the instrument output
voltage range (0-1VDC) represented 0-100 %RH. Comparisons with the
co-located chilled mirror sensor at the CF suggested that the THWAPS RH
sensor was reading artifically low at high humidities because of this 100
%RH maximum. 
   
The scaling of the system was changed so that 0-1 VDC now represents 0-110
%RH. This resulted in a slight loss of precision in the measurements, but
since the RH measurement is only accurate to 2-3 %RH at best, this isn't a
significant problem.
Measurements:sgpthwapsC1.b1:
  • Humidity, relative(rh)

sgpthwapsC1.a1:
  • Humidity, relative(rh)


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DQRID : D050812.12
Start DateStart TimeEnd DateEnd Time
09/21/1999000008/10/20051445
Subject:
SGP/THWAPS/C1 - Minor bias in saturation vapor pressure
DataStreams:sgpthwapsC1.b1
Description:
The saturation vapor correction when temps are below 0C contained an error
in the multiplier.  The incorrect multiplier only equates to an error of
0.01 kPa which is less than the stated uncertainty of the measurement (+/-
0.035 kPa).
Measurements:sgpthwapsC1.b1:
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)


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DQRID : D070613.2
Start DateStart TimeEnd DateEnd Time
06/01/2007000006/02/20072359
Subject:
SGP/RAIN/C1 - Funnel clogged
DataStreams:sgprainC1.b1
Description:
The funnel for the instrument was clogged and the results for this time period are not 
reliable.
Measurements:sgprainC1.b1:
  • lon
  • time
  • base_time
  • lat
  • Rainfall rate(rain_rate)
  • Precipitation(precip_tbrg)
  • time_offset
  • alt


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DQRID : D080116.24
Start DateStart TimeEnd DateEnd Time
12/22/2007175012/22/20072130
Subject:
SGP/THWAPS/C1 - RH Data Incorrect
DataStreams:sgpthwapsC1.b1
Description:
The RH data was incorrect during the times listed.  Reason unknown.  The sensor recovered 
on its own.
Measurements:sgpthwapsC1.b1:
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • sd_vap_pres
  • Humidity, relative(rh)


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DQRID : D090211.2
Start DateStart TimeEnd DateEnd Time
01/09/2009000002/13/20092359
Subject:
SGP/THWAPS/C1 - Barometer intermittent
DataStreams:sgpthwapsC1.b1
Description:
Intermittent dropouts on the barometer data were occurring, with data reading low or 
missing.  Loose wiring was the probable culprit.

In most instances, only 1 minute of data was missing. Linear interpolation between the 
last known good point and the first good point following the dropout can be accomplished.
Measurements:sgpthwapsC1.b1:
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)


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DQRID : D090306.1
Start DateStart TimeEnd DateEnd Time
12/09/2008000001/23/20092359
Subject:
SGP/THWAPS/C1 - Time stamp of data record incorrect
DataStreams:sgpthwapsC1.b1
Description:
Due to problems with the collector system, the datalogger was being time synched 
inappropriately.  This problem was intermittent and did not affect every time stamp.  The worst 
case time adjustments were approximately +/- 7 minutes.  These were infrequent and most of 
the time adjustments were less than 7 minutes.
Measurements:sgpthwapsC1.b1:
  • time_offset
  • base_time


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DQRID : D090824.2
Start DateStart TimeEnd DateEnd Time
07/17/2009000011/27/20091745
Subject:
SGP/THWAPS/C1 - Wind speed incorrect
DataStreams:sgpthwapsC1.b1
Description:
The wind sensor was reporting 0 m/s winds for excessive periods of time and appeared to 
measure lower wind speeds than nearby co-located wind sensors.  Sensor was replaced.
Measurements:sgpthwapsC1.b1:
  • Mean Wind Speed(wspd)


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DQRID : D110724.1
Start DateStart TimeEnd DateEnd Time
04/24/2010000004/24/20102359
04/26/2010000004/26/20102359
04/30/2010000004/30/20102359
05/03/2010000005/06/20102359
05/09/2010000005/10/20102359
05/12/2010000005/17/20102359
05/19/2010000005/25/20102359
05/29/2010000005/29/20102359
05/31/2010000005/31/20102359
06/04/2010000006/04/20102359
06/07/2010000006/07/20102359
06/09/2010000006/10/20102359
06/14/2010000006/16/20102359
06/20/2010000006/20/20102359
07/02/2010000007/07/20102359
07/10/2010000007/10/20102359
07/16/2010000007/16/20102359
07/24/2010000007/27/20102359
08/02/2010000008/02/20102359
08/15/2010000008/31/20102359
09/01/2010000009/09/20102359
Subject:
SGP/RAIN/C1 - Incorrect precipitation measurements
DataStreams:sgprainC1.b1
Description:
RAIN TBRG precipitation measurements were significantly lower than accumulated 
precipitation measured by co-located ORG and MET instruments. This occurred in both light and heavy 
rain events.  

The tipping bucket sensor was replaced by a weighing bucket rain gauge.
Measurements:sgprainC1.b1:
  • Rainfall rate(rain_rate)
  • Precipitation(precip_tbrg)


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DQRID : D111027.1
Start DateStart TimeEnd DateEnd Time
09/27/2011183709/28/20110120
10/07/2011142710/18/20111527
09/01/2011001209/03/20112206
09/17/2011123809/19/20111516
Subject:
SGP/RAIN/C1 - Missing data
DataStreams:sgprainC1.b1
Description:
The datalogger connection was disrupted resulting in no data from the weighing bucket rain 
gauge.
Measurements:sgprainC1.b1:
  • total_mm
  • total_weight
  • error_latch
  • stat_latch
  • frequency2
  • frequency1
  • frequency3
  • Precipitation rate(precip_rate)
  • Precipitation, total(precip)
  • temp3
  • weight3
  • weight2
  • temp1
  • weight1
  • Model derived 2-meter temperature(temp2)


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DQRID : D120113.5
Start DateStart TimeEnd DateEnd Time
11/21/2011000011/21/20112359
Subject:
SGP/RAIN/C1 - Reprocess: Incorrect datestamp
DataStreams:sgprainC1.b1
Description:
The datestamp was off by one day for a several day period. Precipitation was only reported 
for one day during this time period.  The data for 20111121 should be reported as 
20111122.
Measurements:sgprainC1.b1:
  • maintenance_cnt
  • total_mm
  • volt_min
  • error_latch
  • alt
  • stat_latch
  • weight3
  • time_offset
  • weight2
  • weight1
  • time
  • total_weight
  • base_time
  • scans_per_min
  • lon
  • frequency2
  • frequency1
  • Precipitation rate(precip_rate)
  • lat
  • frequency3
  • Precipitation, total(precip)
  • ptemp
  • temp3
  • temp1
  • Model derived 2-meter temperature(temp2)


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DQRID : D120301.2
Start DateStart TimeEnd DateEnd Time
06/12/2011050006/15/20110000
Subject:
SGP/RAIN/C1 - Lightning strike
DataStreams:sgprainC1.b1
Description:
A lightning strike took out the instrument on 6/12.  Error_latch and stat_latch flags were 
tripped and the instrument failed to record precip measured by co-located instruments 
(e.g. on 6/13).  Voltage and other data fields were also very erratic.

Instrument was replaced and normal operations resumed on 20110615.
Measurements:sgprainC1.b1:
  • maintenance_cnt
  • total_mm
  • volt_min
  • total_weight
  • error_latch
  • scans_per_min
  • stat_latch
  • frequency2
  • frequency1
  • frequency3
  • Precipitation rate(precip_rate)
  • Precipitation, total(precip)
  • ptemp
  • temp3
  • weight3
  • weight2
  • temp1
  • weight1
  • Model derived 2-meter temperature(temp2)


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DQRID : D130617.2
Start DateStart TimeEnd DateEnd Time
05/30/2013000006/13/20131900
Subject:
SGP/RAIN/C1 - Instrument problem
DataStreams:sgprainC1.00, sgprainC1.b1, sgprainauxC1.00, sgprainauxC1.b1
Description:
Instrument has shown very large jumps in accumulated rain during the past week when there 
is no rain or very little rain.  

This is coupled with a known issue that is being worked on with the filtering out of noise 
in the instrument.  This filtering leads to removal of low rain rate data resulting low 
accumulation totals on days with low maximum rain rates (<60 mm/hr)
Measurements:sgprainC1.b1:
  • maintenance_cnt
  • total_mm
  • volt_min
  • error_latch
  • alt
  • stat_latch
  • weight3
  • weight2
  • time_offset
  • weight1
  • time
  • total_weight
  • base_time
  • scans_per_min
  • lon
  • frequency2
  • frequency1
  • lat
  • frequency3
  • Precipitation rate(precip_rate)
  • Precipitation, total(precip)
  • ptemp
  • temp3
  • temp1
  • Model derived 2-meter temperature(temp2)

sgprainauxC1.00:
  • AVHRR satellite images for Darwin from BOM (RAW)(raw)

sgprainauxC1.b1:
  • lon
  • panel_temp_min
  • batt_volt
  • panel_temp_max
  • time_offset
  • base_time
  • alt
  • batt_volt_max
  • time
  • batt_volt_min
  • lat

sgprainC1.00:
  • AVHRR satellite images for Darwin from BOM (RAW)(raw)


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DQRID : D130711.1
Start DateStart TimeEnd DateEnd Time
06/28/2013013007/03/20131510
Subject:
SGP/THWAPS/C1 - T/RH sensor failure
DataStreams:sgpthwapsC1.b1
Description:
Storm damage caused failure of the temperature/humidity sensor.  Sensor replaced.
Measurements:sgpthwapsC1.b1:
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • sd_vap_pres
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Temperature, air(temp)
  • Humidity, relative(rh)


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DQRID : D991008.1
Start DateStart TimeEnd DateEnd Time
09/27/1999144510/14/19992230
Subject:
SGP/THWAPS - RH values low by factor of 1.1
DataStreams:sgpthwapsC1.a1, sgpthwapsC1.b1, sgpthwapsC1.00, DsgpthwapsC1.a1, DsgpthwapsC1.b1
Description:
Because of instrument mentor stupidity, all C1 THWAPS RH data collected
from the begin date of this DQR are low by a factor of 1.1.  This error
also will affect the vapor pressure data.  The problem is that the CSI
data logger is expecting the data to be scaled 0-100%RH on the range 0-1V,
but it is now being scaled 0-110%RH on the range 0-1V.
Measurements:sgpthwapsC1.b1:
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • sd_vap_pres
  • Humidity, relative(rh)

sgpthwapsC1.a1:
  • sd_vap_pres
  • Humidity, relative, 30-min intervals, standard deviation(sd_rh)
  • Humidity, relative(rh)
  • Pressure, vapor, 60-m height, 30-min intervals(vap_pres)

sgpthwapsC1.00:
  • Raw data stream - documentation not supported

DsgpthwapsC1.a1:
  • Development data stream - documentation not supported

DsgpthwapsC1.b1:
  • Development data stream - documentation not supported


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