Data Quality Reports for Session: 179156 User: ql_data Completed: 08/22/2016

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D140610.2MAO/TRACEGAS/S1 - Pump failuremaoaosnoxS1.a1Incorrect
D140610.3MAO/TRACEGAS/S1 - Communication issuemaoaosnoxS1.a1Incorrect
D140610.4MAO/TRACEGAS/S1 - NOy spurious signalsmaoaosnoxS1.a1Does not affect quality
D140610.5MAO/TRACEGAS/S1 - Communications issuemaoaosnoxS1.a1Incorrect
D140610.6MAO/TRACEGAS/S1 - NO exceeds NOymaoaosnoxS1.a1Suspect
D140610.7MAO/TRACEGAS/S1 - Interpolated response value calculatedmaoaosnoxS1.a1Does not affect quality
D140610.8MAO/TRACEGAS/S1 - Large data spikesmaoaosnoxS1.a1Does not affect quality
D140610.9MAO/TRACEGAS/S1 - Photolysis cell in NOx operating below normal efficiencymaoaosnoxS1.a1Suspect
D140625.6MAO/TRACEGAS/S1 - Photolysis cell in NOx operating below normal efficiencymaoaosnoxS1.a1Incorrect
D140815.1MAO/AOS/S1/M1 - Instrument maintenancemaoaosnoxS1.a1Incorrect
D140829.1MAO/TRACEGAS/S1 - Instrument problemmaoaosnoxS1.a1Suspect
D141103.3MAO/TRACEGAS/S1 - instrument problemmaoaosnoxS1.a1Incorrect
D150324.1MAO/TRACEGAS/S1 - System requiring restartmaoaosnoxS1.a1Incorrect
D150417.13MAO/TRACEGAS/S1 - Data missing from software restartmaoaosnoxS1.a1Missing
D150501.3MAO/TRACEGAS/S1 - InstrumentmaoaosnoxS1.a1Missing
D150527.1MAO/TRACEGAS/S1 - Calibration standard turned off.maoaosnoxS1.a1Does not affect quality
D150710.4MAO/TRACEGAS/S1 - Calibrator turned off by OperatormaoaosnoxS1.a1Does not affect quality
D150921.2MAO/AOS/M1/S1 - Forest FiremaoaosnoxS1.a1Does not affect quality
D151208.3MAO/TRACEGAS/S1 - Pump unable to pull proper flow causing loss in sensitivitymaoaosnoxS1.a1Suspect


DQRID : D140610.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/31/2014230602/01/20141408Incorrect
Subject:
MAO/TRACEGAS/S1 - Pump failure
DataStreams:maoaosnoxS1.a1
Description:
Instrument pumps turned off from a sited power issue. Data flat-lined and incorrect. Do 
not use the data.
Measurements:maoaosnoxS1.a1:
  • nox_react_temp
  • inlet_temp
  • noy_conv_temp
  • nox_ozonator
  • One minute average of NO values calculated with nominal sensitivity correction(no)
  • noy_pressure
  • noy_ozonator
  • nox_conv_temp
  • inlet_nox_mfc
  • nox_pmt_temp
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • noy_pmt_temp
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • inlet_noy_mfc
  • noy_pre
  • inlet_conv_temp
  • nox_pre
  • noy_internal_temp
  • nox_pressure
  • noy_pmt_voltage
  • nox_pmt_voltage
  • noy_flow
  • nox_internal_temp
  • nox_flow
  • noy_react_temp

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DQRID : D140610.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/03/2014151102/04/20141925Incorrect
Subject:
MAO/TRACEGAS/S1  - Communication issue
DataStreams:maoaosnoxS1.a1
Description:
Inlet box lost communications. Data flat-lined and incorrect.
Measurements:maoaosnoxS1.a1:
  • nox_react_temp
  • inlet_temp
  • noy_conv_temp
  • nox_ozonator
  • One minute average of NO values calculated with nominal sensitivity correction(no)
  • noy_pressure
  • noy_ozonator
  • nox_conv_temp
  • inlet_nox_mfc
  • nox_pmt_temp
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • noy_pmt_temp
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • inlet_noy_mfc
  • noy_pre
  • inlet_conv_temp
  • nox_pre
  • noy_internal_temp
  • nox_pressure
  • noy_pmt_voltage
  • nox_pmt_voltage
  • noy_flow
  • nox_internal_temp
  • nox_flow
  • noy_react_temp

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DQRID : D140610.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/10/2014130903/01/20140000Does not affect quality
Subject:
MAO/TRACEGAS/S1 - NOy spurious signals
DataStreams:maoaosnoxS1.a1
Description:
NOy MFM (and the Pressure sensor) began to report spurious signals. This appears related 
to water infiltration. The Operator installed a 'beer can' rain diverter in early March to 
remedy the problem. The loss of this sensor is inconsequential as the flow is controlled 
and measured by an upstream Mass Flow Controller in the inlet.
Measurements:maoaosnoxS1.a1:
  • nox_pressure
  • nox_flow

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DQRID : D140610.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/03/2014230203/04/20140000Incorrect
03/16/2014175703/17/20140000Incorrect
03/04/2014185103/04/20140000Incorrect
03/12/2014190503/13/20140000Incorrect
Subject:
MAO/TRACEGAS/S1  - Communications issue
DataStreams:maoaosnoxS1.a1
Description:
Power irregularities caused communication issues with data collector. Data is incorrect.
Measurements:maoaosnoxS1.a1:
  • nox_react_temp
  • inlet_temp
  • noy_conv_temp
  • nox_ozonator
  • One minute average of NO values calculated with nominal sensitivity correction(no)
  • noy_pressure
  • noy_ozonator
  • nox_conv_temp
  • inlet_nox_mfc
  • nox_pmt_temp
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • noy_pmt_temp
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • inlet_noy_mfc
  • noy_pre
  • inlet_conv_temp
  • nox_pre
  • noy_internal_temp
  • nox_pressure
  • noy_pmt_voltage
  • nox_pmt_voltage
  • noy_flow
  • nox_internal_temp
  • nox_flow
  • noy_react_temp

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DQRID : D140610.6
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/06/2014110003/06/20141400Suspect
Subject:
MAO/TRACEGAS/S1 - NO exceeds NOy
DataStreams:maoaosnoxS1.a1
Description:
NO exceeds NOy.  This is nonsensical.
Measurements:maoaosnoxS1.a1:
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NO values calculated with nominal sensitivity correction(no)

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DQRID : D140610.7
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/17/2014060005/09/20140006Does not affect quality
Subject:
MAO/TRACEGAS/S1 - Interpolated response value calculated
DataStreams:maoaosnoxS1.a1
Description:
Calibration cylinder was either turned off or expired.  Calibrations prior to and 
following this period appear nominal.  An interpolated response value was used.
Measurements:maoaosnoxS1.a1:
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • One minute average of NO values calculated with nominal sensitivity correction(no)

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DQRID : D140610.8
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/19/2014190004/19/20142300Does not affect quality
04/26/2014220504/26/20142210Does not affect quality
04/14/2014080004/14/20141200Does not affect quality
Subject:
MAO/TRACEGAS/S1 - Large data spikes
DataStreams:maoaosnoxS1.a1
Description:
Large spikes (>100 ppbv) exist in the data presumably due to onsite operation of equipment 
and/or onsite generator.  Last event bracketed by pump outages on generator transfer.
Measurements:maoaosnoxS1.a1:
  • nox_react_temp
  • inlet_temp
  • noy_conv_temp
  • nox_ozonator
  • One minute average of NO values calculated with nominal sensitivity correction(no)
  • noy_pressure
  • noy_ozonator
  • nox_conv_temp
  • inlet_nox_mfc
  • nox_pmt_temp
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • noy_pmt_temp
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • inlet_noy_mfc
  • noy_pre
  • inlet_conv_temp
  • nox_pre
  • noy_internal_temp
  • nox_pressure
  • noy_pmt_voltage
  • nox_pmt_voltage
  • noy_flow
  • nox_internal_temp
  • nox_flow
  • noy_react_temp

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DQRID : D140610.9
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/01/2014000003/31/20142359Suspect
Subject:
MAO/TRACEGAS/S1 - Photolysis cell in NOx operating below normal efficiency
DataStreams:maoaosnoxS1.a1
Description:
Photolysis cell in NOx box was not operating at correct efficiency.  During February there 
was ~15-20% efficiency and in March efficiency degraded to ~10%.  NO2 data is reported 
for these months, but should be viewed as indicative rather quantitative.
Measurements:maoaosnoxS1.a1:
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)

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DQRID : D140625.6
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/01/2014000004/30/20142359Incorrect
Subject:
MAO/TRACEGAS/S1 - Photolysis cell in NOx operating below normal efficiency
DataStreams:maoaosnoxS1.a1
Description:
Photolysis cell in NOx box was not operating at correct efficiency.  Data is incorrect 
because efficiency too low.
Measurements:maoaosnoxS1.a1:
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)

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DQRID : D140815.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
08/09/2014160008/15/20141500Incorrect
Subject:
MAO/AOS/S1/M1 - Instrument maintenance
DataStreams:maoaosnoxS1.a1
Description:
Instrument maintenance and cleaning inlets affecting data.
Measurements:maoaosnoxS1.a1:
  • nox_react_temp
  • inlet_temp
  • noy_conv_temp
  • nox_ozonator
  • One minute average of NO values calculated with nominal sensitivity correction(no)
  • noy_pressure
  • noy_ozonator
  • nox_conv_temp
  • inlet_nox_mfc
  • nox_pmt_temp
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • noy_pmt_temp
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • inlet_noy_mfc
  • noy_pre
  • inlet_conv_temp
  • nox_pre
  • noy_internal_temp
  • nox_pressure
  • noy_pmt_voltage
  • nox_pmt_voltage
  • noy_flow
  • nox_internal_temp
  • nox_flow
  • noy_react_temp

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DQRID : D140829.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/19/2014172603/31/20142359Suspect
Subject:
MAO/TRACEGAS/S1 - Instrument problem
DataStreams:maoaosnoxS1.a1
Description:
Photolysis cell efficiency decreased from the beginning of the deployment due to some of 
the LEDs on the converter lamp failing. During February and March, the photolysis cell 
efficiency decreased to approximately 0.2. NO2 Data is provided during this period using the 
compromised lamp and adjusted for lower efficiency.
Measurements:maoaosnoxS1.a1:
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)

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DQRID : D141103.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/01/2014000008/09/20142359Incorrect
Subject:
MAO/TRACEGAS/S1 - instrument problem
DataStreams:maoaosnoxS1.a1
Description:
Photolysis cell efficiency decreased too low and data is not reliable.
Measurements:maoaosnoxS1.a1:
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)

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DQRID : D150324.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/24/2015000003/24/20151346Incorrect
Subject:
MAO/TRACEGAS/S1 - System requiring restart
DataStreams:maoaosnoxS1.a1
Description:
When checking the instrument it was discovered to be in an unbooted state.  The system was 
restarted and the data collection restarted.  There is no data for the period it was 
down.
Measurements:maoaosnoxS1.a1:
  • nox_react_temp
  • inlet_temp
  • noy_conv_temp
  • nox_ozonator
  • One minute average of NO values calculated with nominal sensitivity correction(no)
  • noy_pressure
  • noy_ozonator
  • nox_conv_temp
  • inlet_nox_mfc
  • nox_pmt_temp
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • noy_pmt_temp
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • inlet_noy_mfc
  • noy_pre
  • inlet_conv_temp
  • nox_pre
  • noy_internal_temp
  • nox_pressure
  • noy_pmt_voltage
  • nox_pmt_voltage
  • noy_flow
  • nox_internal_temp
  • nox_flow
  • noy_react_temp

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DQRID : D150417.13
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/24/2015000003/24/20151347Missing
Subject:
MAO/TRACEGAS/S1 - Data missing from software restart
DataStreams:maoaosnoxS1.a1
Description:
Acquisition software locked up at midnight. Software restarted upon discovery.
Measurements:maoaosnoxS1.a1:
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • One minute average of NO values calculated with nominal sensitivity correction(no)

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DQRID : D150501.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/09/2015034504/13/20151711Missing
Subject:
MAO/TRACEGAS/S1 - Instrument
DataStreams:maoaosnoxS1.a1
Description:
Instrument data system failed to start after unexpected power failure.  Unit was restarted 
upon observing failure.
Measurements:maoaosnoxS1.a1:
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • One minute average of NO values calculated with nominal sensitivity correction(no)

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DQRID : D150527.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/09/2015000004/11/20152359Does not affect quality
Subject:
MAO/TRACEGAS/S1 - Calibration standard turned off.
DataStreams:maoaosnoxS1.a1
Description:
Calibration standard was turned off (or ran out) for 3 days.  Standard additions before 
and after this period are consistent.
Measurements:maoaosnoxS1.a1:
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • One minute average of NO values calculated with nominal sensitivity correction(no)

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DQRID : D150710.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/22/2015140006/26/20150200Does not affect quality
Subject:
MAO/TRACEGAS/S1 - Calibrator turned off by Operator
DataStreams:maoaosnoxS1.a1
Description:
Operator failed to initiate software control of Calibrator following servicing of 
instrument. Consistent behavior before and after episode. Minimal impact on calibration controls.
Measurements:maoaosnoxS1.a1:
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • One minute average of NO values calculated with nominal sensitivity correction(no)

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DQRID : D150921.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/04/2015000010/08/20152359Does not affect quality
09/03/2015180009/03/20152359Does not affect quality
09/13/2015165309/13/20151810Does not affect quality
Subject:
MAO/AOS/M1/S1 - Forest Fire
DataStreams:maoaosnoxS1.a1
Description:
Smoke from forest burning can be seen on the TSI images rising and then subsequently 
moving over the site during this period.  Many of the AOS instruments observed a sharp spike 
in data values.

October 4-8 multiple fires in the area resulted in hazy conditions during this entire 
period.

Most notable in the following instruments and variables

ACSM - Total Organics
AETH - Black Carbon Concentrations at all wavelengths
CCN100 - Spike in number concentrations occurred a few hours after the smoke plume
CLAP3W - Absorption Coefficient
CPC - Similar to the CCN100, spike in particle concentration occurred a few hours later
CPCF - Particle Concentration
CPCU - Particle Concentration
NEPHELOMETERS - Scattering/Backscattering Coeff
PSAP3W - Absorption Coefficient
SMPS - Concentration and Size Distribution
UHSAS - Size Distribution
Measurements:maoaosnoxS1.a1:
  • One minute average of NO2 values calculated with nominal sensitivity correction
    and nominal BLC efficiency(no2)
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)
  • One minute average of NOx values(nox)
  • One minute average of NO values calculated with nominal sensitivity correction(no)

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DQRID : D151208.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/12/2015000012/01/20152359Suspect
Subject:
MAO/TRACEGAS/S1 - Pump unable to pull proper flow causing loss in sensitivity
DataStreams:maoaosnoxS1.a1
Description:
Steady reduction in NOy sensitivity. Conversion efficiency is unaffected.
Measurements:maoaosnoxS1.a1:
  • One minute average of NOy values using nominal sensitivity correction and
    nominal Mo converter efficiency(noy)

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END OF DATA