Data Quality Reports for Session: 178739 User: yfq Completed: 08/01/2016

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D140430.1MAO/UHSAS/S1 - Optical mirror cleaningmaoaosuhsasS1.a1Suspect
D140815.1MAO/AOS/S1/M1 - Instrument maintenancemaoaosuhsasS1.a1Incorrect
D140826.2MAO/UHSAS/S1 - Software failuremaoaosuhsasS1.a1Missing
D140826.5MAO/UHSAS/S1 - Optical mirror cleaningmaoaosuhsasS1.a1Suspect
D140826.6MAO/UHSAS/S1 - Low Particle CountsmaoaosuhsasS1.a1Incorrect
D141210.6MAO/UHSAS/S1 - Problem with time fieldsmaoaosuhsasS1.a1Suspect
D150429.6MAO/AOS/S1 - Flow rate changemaoaosuhsasS1.a1Does not affect quality
D150619.7MAO/ACSM/AETH/CCN/CPC/HTDMA/NEPHELOMETER/PASS/PSAP/SMPS/SP2/UHSAS/S1 - Manifold blower
stopped		maoaosuhsasS1.a1Incorrect
D150728.3MAO/UHSAS/S1 - missing data due to full diskmaoaosuhsasS1.a1Missing
D150909.2MAO/UHSAS/S1 - Reprocess: Non-optimal bin sizesmaoaosuhsasS1.a1Does not affect quality
D150917.3MAO/UHSAS/S1 - Off line for flow calibrationmaoaosuhsasS1.a1Incorrect
D150917.6MAO/ACSM/AETH/CPC/NEPHELOMETER/PSAP/SMPS/UHSAS/S1 Calibration of the NephelometermaoaosuhsasS1.a1Incorrect
D150921.2MAO/AOS/M1/S1 - Forest FiremaoaosuhsasS1.a1Does not affect quality
D150930.1MAO/UHSAS/S1 - Instrument offline due to a flow issuemaoaosuhsasS1.a1Missing
D150930.2MAO/UHSAS/S1 - Instrument sample flow lowmaoaosuhsasS1.a1Suspect
D151203.8MAO/UHSAS/S1 - Incorrect concentrationmaoaosuhsasS1.a1Incorrect


DQRID : D140430.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/15/2014135402/24/20141259Suspect
Subject:
MAO/UHSAS/S1 - Optical mirror cleaning
DataStreams:maoaosuhsasS1.a1
Description:
The Ultra-High Sensitivity Aerosol Spectrometer response decreases when the reference 
voltage (field: "reference") drops below about 1.6 volts.
Measurements:maoaosuhsasS1.a1:
  • reference
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)

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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:maoaosuhsasS1.a1
Description:
Instrument maintenance and cleaning inlets affecting data.
Measurements:maoaosuhsasS1.a1:
  • base_time
  • differential_voltage
  • sheath_flow
  • purge_flow
  • flow
  • sampling_volume
  • reference
  • upper_size_limit
  • bin_num
  • lower_size_limit
  • scattering_voltage
  • current
  • unit_temperature
  • auxiliary
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • sample_pressure
  • MET air temperature(temperature)

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DQRID : D140826.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/25/2014062206/25/20141509Missing
01/24/2014115501/25/20141257Missing
07/27/2014055907/28/20141730Missing
07/23/2014040107/23/20141045Missing
05/16/2014065205/16/20141439Missing
07/25/2014055207/25/20141403Missing
03/03/2014185903/04/20141455Missing
06/19/2014105906/19/20141300Missing
06/04/2014063406/04/20141435Missing
04/20/2014035204/21/20141403Missing
06/19/2014135606/19/20141859Missing
05/18/2014094005/18/20141514Missing
01/27/2014195901/28/20141506Missing
06/21/2014140106/23/20141352Missing
02/22/2014075902/22/20141649Missing
08/09/2014135908/09/20141934Missing
04/28/2014100004/28/20142316Missing
07/22/2014045907/22/20141315Missing
06/03/2014065106/03/20141411Missing
05/24/2014071405/24/20141332Missing
04/08/2014131604/09/20140000Missing
07/01/2014221207/02/20142001Missing
06/18/2014224706/19/20140100Missing
07/20/2014053407/21/20141316Missing
05/19/2014150305/20/20141324Missing
06/18/2014205906/18/20142200Missing
06/19/2014055906/19/20140800Missing
05/21/2014023205/21/20141335Missing
08/02/2014070908/04/20141341Missing
05/08/2014063705/08/20141257Missing
06/17/2014011306/17/20141257Missing
07/16/2014012307/16/20141607Missing
04/14/2014093504/15/20141330Missing
03/08/2014023303/08/20141324Missing
02/19/2014225902/20/20141445Missing
03/23/2014222103/24/20141629Missing
04/02/2014025504/03/20141255Missing
07/15/2014065407/15/20141441Missing
07/07/2014041607/07/20141528Missing
05/09/2014001805/09/20141236Missing
06/19/2014085706/19/20141000Missing
02/26/2014205902/27/20141400Missing
03/28/2014185903/29/20141439Missing
02/18/2014085702/18/20141247Missing
01/28/2014205901/29/20141336Missing
06/10/2014062306/10/20141404Missing
05/02/2014145905/02/20141826Missing
04/06/2014094304/08/20141315Missing
05/27/2014034905/27/20141347Missing
04/11/2014091404/13/20140017Missing
03/04/2014231503/05/20141312Missing
06/17/2014125906/17/20141502Missing
02/24/2014125902/24/20142138Missing
07/08/2014180107/09/20141634Missing
08/07/2014041208/07/20141305Missing
07/30/2014021307/30/20141413Missing
Subject:
MAO/UHSAS/S1 - Software failure
DataStreams:maoaosuhsasS1.a1
Description:
Instrument software failed multiple times during the deployment.
Measurements:maoaosuhsasS1.a1:
  • base_time
  • differential_voltage
  • sheath_flow
  • purge_flow
  • flow
  • sampling_volume
  • North latitude(lat)
  • reference
  • upper_size_limit
  • East longitude(lon)
  • bin_num
  • time
  • lower_size_limit
  • scattering_voltage
  • unit_temperature
  • current
  • time_offset
  • Altitude above mean sea level(alt)
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • auxiliary
  • sample_pressure
  • MET air temperature(temperature)

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DQRID : D140826.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/13/2014160105/02/20141459Suspect
Subject:
MAO/UHSAS/S1 - Optical mirror cleaning
DataStreams:maoaosuhsasS1.a1
Description:
The Ultra-High Sensitivity Aerosol Spectrometer response decreases when the reference 
voltage (field name: "reference") drops below about 1.6 volts.
Measurements:maoaosuhsasS1.a1:
  • reference
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)

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DQRID : D140826.6
Start DateStart TimeEnd DateEnd Time Data Quality Metric
08/21/2014224308/24/20142010Incorrect
Subject:
MAO/UHSAS/S1  - Low Particle Counts
DataStreams:maoaosuhsasS1.a1
Description:
The UHSAS began preferentially sampling through the HTDMA rather than the ambient sampling 
line.
Measurements:maoaosuhsasS1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)

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DQRID : D141210.6
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/22/2014143502/22/20152359Suspect
02/22/2015000012/01/20151500Suspect
Subject:
MAO/UHSAS/S1 - Problem with time fields
DataStreams:maoaosuhsasS1.a1
Description:
During the MAO deployment the instrument time for the UHSAS was not automatically synched 
and
tended to drift fast relative to the time corrected by a time server. The time of the data 
in
the files is about 0 to 250 seconds fast. This has been determined by comparing the time 
of
spikes in UHSAS CPC data. The discrepancy does not jump around.  The time gradually gets 
faster until it is resynched.

The  Documents  shows the time of the peaks used to approximate the 
error in the time. 

During the second time range the UHSAS clock was synced manually each month when the MAO 
systems were rebooted.  The time was generally within 30 seconds of being correct when it 
was synced.
Measurements:maoaosuhsasS1.a1:
  • base_time
  • differential_voltage
  • sheath_flow
  • purge_flow
  • flow
  • sampling_volume
  • reference
  • upper_size_limit
  • bin_num
  • time
  • lower_size_limit
  • scattering_voltage
  • unit_temperature
  • current
  • time_offset
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • auxiliary
  • MET air temperature(temperature)
  • sample_pressure

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DQRID : D150429.6
Start DateStart TimeEnd DateEnd Time Data Quality Metric
11/17/2014130004/20/20151845Does not affect quality
Subject:
MAO/AOS/S1 - Flow rate change
DataStreams:maoaosuhsasS1.a1
Description:
At begining of period, the bypass blower on MAOS A failed.  This was replaced by the 
instrument operator, but operator was unable to reprogram the PID flow controller.  The blower 
ran approximately 50% faster than designed flow rate.  It is unlikely this significantly 
affected the flow dynamics or transmission efficiencies in the MAOS A sampling stack.  
The data is colored transparent, but the DQR is filed to alert the user.  No specific 
degradation of signals were noted at this time.
Measurements:maoaosuhsasS1.a1:
  • differential_voltage
  • sheath_flow
  • purge_flow
  • flow
  • sampling_volume
  • reference
  • upper_size_limit
  • bin_num
  • lower_size_limit
  • scattering_voltage
  • current
  • unit_temperature
  • auxiliary
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • MET air temperature(temperature)
  • sample_pressure

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DQRID : D150619.7
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/16/2015150606/17/20151321Incorrect
Subject:
MAO/ACSM/AETH/CCN/CPC/HTDMA/NEPHELOMETER/PASS/PSAP/SMPS/SP2/UHSAS/S1 - Manifold blower 
stopped
DataStreams:maoaosuhsasS1.a1
Description:
Manifold blower pulls air through the inlet to the instrument.  Without the blower, the 
air source is indeterminant.
Measurements:maoaosuhsasS1.a1:
  • base_time
  • differential_voltage
  • sheath_flow
  • purge_flow
  • flow
  • sampling_volume
  • North latitude(lat)
  • reference
  • upper_size_limit
  • bin_num
  • East longitude(lon)
  • time
  • lower_size_limit
  • scattering_voltage
  • current
  • unit_temperature
  • time_offset
  • Altitude above mean sea level(alt)
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • auxiliary
  • sample_pressure
  • MET air temperature(temperature)

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DQRID : D150728.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/24/2015051507/27/20151845Missing
Subject:
MAO/UHSAS/S1 - missing data due to full disk
DataStreams:maoaosuhsasS1.a1
Description:
Data missing for the entire period. UHSAS stopped recording new data files because the 
disk was full.
Measurements:maoaosuhsasS1.a1:
  • base_time
  • differential_voltage
  • sheath_flow
  • purge_flow
  • flow
  • sampling_volume
  • North latitude(lat)
  • reference
  • upper_size_limit
  • bin_num
  • East longitude(lon)
  • time
  • lower_size_limit
  • scattering_voltage
  • current
  • unit_temperature
  • time_offset
  • Altitude above mean sea level(alt)
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • auxiliary
  • sample_pressure
  • MET air temperature(temperature)

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DQRID : D150909.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/20/2014160010/02/20152359Does not affect quality
Subject:
MAO/UHSAS/S1 - Reprocess: Non-optimal bin sizes
DataStreams:maoaosuhsasS1.a1
Description:
The UHSAS was programmed with a bin sizes appropriate to the aerial UHSAS. This is not 
really a problem. The bin sizes are not consistent with the other console UHSAS. The problem 
is in blindly comparing the data between the various UHSAS. This is not a problem of 
mislabeling or incorrect size bins. The data are correct for the stated size bins.
Measurements:maoaosuhsasS1.a1:
  • lower_size_limit

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DQRID : D150917.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
09/16/2015153009/16/20151537Incorrect
Subject:
MAO/UHSAS/S1 - Off line for flow calibration
DataStreams:maoaosuhsasS1.a1
Description:
Data are bad.  Sampling stopped for inlet flow calibration.
Measurements:maoaosuhsasS1.a1:
  • base_time
  • differential_voltage
  • sheath_flow
  • purge_flow
  • flow
  • sampling_volume
  • North latitude(lat)
  • reference
  • upper_size_limit
  • bin_num
  • East longitude(lon)
  • time
  • lower_size_limit
  • scattering_voltage
  • current
  • unit_temperature
  • time_offset
  • Altitude above mean sea level(alt)
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • auxiliary
  • sample_pressure
  • MET air temperature(temperature)

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DQRID : D150917.6
Start DateStart TimeEnd DateEnd Time Data Quality Metric
09/17/2015193409/17/20152035Incorrect
Subject:
MAO/ACSM/AETH/CPC/NEPHELOMETER/PSAP/SMPS/UHSAS/S1  Calibration of the Nephelometer
DataStreams:maoaosuhsasS1.a1
Description:
Inlet line for these instruments was used during Nephelometer calibration compromising the 
data.
Measurements:maoaosuhsasS1.a1:
  • differential_voltage
  • sheath_flow
  • purge_flow
  • flow
  • sampling_volume
  • reference
  • upper_size_limit
  • bin_num
  • lower_size_limit
  • scattering_voltage
  • current
  • unit_temperature
  • auxiliary
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • MET air temperature(temperature)
  • sample_pressure

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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:maoaosuhsasS1.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:maoaosuhsasS1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)

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DQRID : D150930.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
09/25/2015155909/30/20151425Missing
Subject:
MAO/UHSAS/S1 - Instrument offline due to a flow issue
DataStreams:maoaosuhsasS1.a1
Description:
Instrument was offline due to a low sample flow. Data missing for the entire period.
Measurements:maoaosuhsasS1.a1:
  • base_time
  • differential_voltage
  • sheath_flow
  • purge_flow
  • flow
  • sampling_volume
  • North latitude(lat)
  • reference
  • upper_size_limit
  • bin_num
  • East longitude(lon)
  • time
  • lower_size_limit
  • scattering_voltage
  • current
  • unit_temperature
  • time_offset
  • Altitude above mean sea level(alt)
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • auxiliary
  • sample_pressure
  • MET air temperature(temperature)

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DQRID : D150930.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
09/21/2015000009/25/20151625Suspect
Subject:
MAO/UHSAS/S1 - Instrument sample flow low
DataStreams:maoaosuhsasS1.a1
Description:
Instrument sample flow steadily decreasing from the nominal 50 sccm to about 13-14 sccm 
over several days due to an internal obstruction. Possible particle losses, potentially 
affecting the measured total number concentration and sizing.
Measurements:maoaosuhsasS1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • sample_pressure
  • flow

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DQRID : D151203.8
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/19/2015033210/19/20150854Incorrect
10/11/2015022810/11/20151354Incorrect
09/23/2015054009/23/20151055Incorrect
10/07/2015045910/07/20151141Incorrect
10/24/2015031410/24/20151130Incorrect
10/04/2015000010/04/20151230Incorrect
10/06/2015021710/06/20151339Incorrect
10/04/2015190110/04/20152359Incorrect
10/03/2015030910/03/20151200Incorrect
09/21/2015065109/21/20151146Incorrect
10/01/2015003210/01/20151947Incorrect
10/02/2015000010/02/20151530Incorrect
10/18/2015052810/18/20151127Incorrect
10/01/2015232010/01/20152359Incorrect
09/12/2015081309/12/20151201Incorrect
10/08/2015014310/08/20151532Incorrect
10/17/2015021310/17/20150427Incorrect
10/18/2015130110/18/20151700Incorrect
09/22/2015004509/22/20150801Incorrect
10/05/2015000010/05/20151525Incorrect
10/17/2015111210/17/20151304Incorrect
10/25/2015041510/25/20151142Incorrect
10/12/2015073510/12/20151200Incorrect
Subject:
MAO/UHSAS/S1 - Incorrect concentration
DataStreams:maoaosuhsasS1.a1
Description:
Ambient aerosol concentration was above UHSAS upper detection limit, saturating the 
instrument. Instrument started showing incorrect (low) concentration values.
Measurements:maoaosuhsasS1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)

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END OF DATA