Data Quality Reports for Session: 184048 User: fmei Completed: 03/06/2017


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D120827.3SGP/ACSM/C1 - Water in inlet sample linesgpaosacsmC1.b1Incorrect
D121211.5SGP/ACSM/C1 - Pump failuresgpaosacsmC1.b1Incorrect
D130108.1SGP/ACSM/C1 - Pump failuresgpaosacsmC1.b1Incorrect
D130108.2SGP/ACSM/C1 - Sample flow restrictedsgpaosacsmC1.b1Suspect
D130201.2SGP/ACSM/C1 - Missing datasgpaosacsmC1.b1Missing
D140417.1SGP/ACSM/C1 - Missing datasgpaosacsmC1.b1Missing
D140418.1SGP/ACSM/C1 - Data not available and unrecoverablesgpaosacsmC1.b1Missing
D140627.1SGP/ACSM/C1 - Windows 7 upgrade and turbo molecular pump failure.sgpaosacsmC1.b1Missing
D141009.2SGP/ACSM/C1 - Reprocessing Notice (RID 1237)sgpaosacsmC1.b1Does not affect quality
D141107.1SGP/ACSM/C1 - computer software problemsgpaosacsmC1.b1Missing
D141107.5SGP/ACSM/C1 - Pump FailuresgpaosacsmC1.b1Missing
D141205.1SGP/ACSM/C1 - Unexpected instrument shutdownsgpaosacsmC1.b1Incorrect
D150210.1SGP/ACSM/C1 - Clogged critical orificesgpaosacsmC1.b1Incorrect
D150223.2SGP/ACSM/C1 - Critical orifice cloggedsgpaosacsmC1.b1Missing
D150410.1SGP/ACSM/C1 - missing datasgpaosacsmC1.b1Missing
D150410.2SGP/ACSM/C1 - missing datasgpaosacsmC1.b1Missing
D150410.3SGP/ACSM/C1 - missing datasgpaosacsmC1.b1Missing
D150410.4SGP/ACSM/C1 - missing datasgpaosacsmC1.b1Missing
D150429.4SGP/ACSM/C1 - Vacuum pump failuresgpaosacsmC1.b1Incorrect
D150513.1SGP/ACSM/C1 - Sampling pump failuresgpaosacsmC1.b1Incorrect
D150702.7SGP/ACSM/C1 - Missing datasgpaosacsmC1.b1Missing
D150708.1SGP/ACSM/C1 - Power outage and calibrationsgpaosacsmC1.b1Missing
D150819.1SGP/ACSM/C1 - Instrument inlet pressure lowsgpaosacsmC1.b1Incorrect
D150925.1SGP/ACSM/C1 - Instrument averaging time changedsgpaosacsmC1.b1Does not affect quality
D151120.1SGP/ACSM/C1 - Filter switching valve failuresgpaosacsmC1.b1Incorrect
D160104.7SGP Site Power Outage Due to Winter StormsgpaosacsmC1.b1Does not affect quality
D160105.1SGP/ACSM/C1 - Power outagesgpaosacsmC1.b1Missing
D160119.9SGP/ACSM/C1 - instrument calibrationsgpaosacsmC1.b1Missing
D160406.2SGP/AOS/C1 - Wildfire smoke plumes advecting over facilitysgpaosacsmC1.b1Does not affect quality
D160715.4SGP/ACSM/NEPHELOMETER/TDMA/C1 - Data Quality Evaluation OngoingsgpaosacsmC1.b1Does not affect quality
D160909.12SGP/ACSM/C1 - Filter switching valve not operatingsgpaosacsmC1.b1Incorrect
D161005.1SGP/ACSM/C1 - Low inlet pressure in sample positionsgpaosacsmC1.b1Suspect
D161005.2SGP/ACSM/C1 - Instrument leak and updated for new systemsgpaosacsmC1.b1Missing
D161027.2SGP/AOS/C1 - Environmental SmokesgpaosacsmC1.b1Does not affect quality
D161216.1SGP/ACSM/C1 - Critical orifice clogsgpaosacsmC1.b1Suspect


DQRID : D120827.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/14/2012150007/31/20122359Incorrect
06/03/2012180006/12/20120700Incorrect
Subject:
SGP/ACSM/C1 - Water in inlet sample line
DataStreams:sgpaosacsmC1.b1
Description:
Data became progressively more noisy causing large spikes in data. These spikes started 
occurring for longer periods of time during the day before the instrument went down 
completely on 7/12.

The afternoon data (usually 15:00-24:00 UTC) was incorrect because of water condensation 
in the inlet line and aerosol collection efficiency change. The organic mass loading is 
around 0 when the condensed water was absorbing all the particles.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D121211.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
11/13/2012220012/05/20122210Incorrect
Subject:
SGP/ACSM/C1 - Pump failure
DataStreams:sgpaosacsmC1.b1
Description:
The carbon vane vacuum pump that pulls air through the instrument failed 11/13 following a 
power failure.  The pump was replaced and returned to service at 2210 GMT on 12/05/2012.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D130108.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/18/2012150012/21/20122130Incorrect
Subject:
SGP/ACSM/C1 - Pump failure
DataStreams:sgpaosacsmC1.b1
Description:
The carbon vane vacuum pump that pulls air through the instrument failed again and a 
section of tubing between the ACSM and pump was partially collapsed.  The pump and tubing were 
replaced and returned to service at 2223 GMT on 12/18/2012. The ACSM was then tuned 
before resuming data collection at 2130 GMT on 12/21/2012.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D130108.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/05/2012221112/18/20121459Suspect
Subject:
SGP/ACSM/C1 - Sample flow restricted
DataStreams:sgpaosacsmC1.b1
Description:
This period is between two failures of the carbon vane pump that pulls air through the 
instrument. During this time the tubing between the pump and ACSM collapsed and may have 
affected the sample flow rate. The collapsed tubing was replaced with a different type, one 
that is much stiffer and less prone to collapsing under vacuum.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D130201.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
11/11/2012090011/13/20122200Missing
Subject:
SGP/ACSM/C1 - Missing data
DataStreams:sgpaosacsmC1.b1
Description:
Data are missing and unrecoverable.
Measurements:sgpaosacsmC1.b1:
  • time_bounds
  • time_offset
  • qc_total_organics
  • qc_ammonium
  • base_time
  • org_mx_err
  • qc_org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • qc_org_mx
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • qc_nitrate
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • qc_sulfate
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • qc_chloride
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Altitude above mean sea level(alt)
  • East longitude(lon)


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DQRID : D140417.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/01/2013000007/03/20132359Missing
06/01/2013000006/13/20132359Missing
02/27/2013000002/27/20132359Missing
11/22/2012000012/05/20122359Missing
07/01/2012000007/30/20122117Missing
10/26/2013000010/31/20131418Missing
05/01/2013000005/24/20132359Missing
Subject:
SGP/ACSM/C1 - Missing data
DataStreams:sgpaosacsmC1.b1
Description:
Data are missing and unrecoverable.
Measurements:sgpaosacsmC1.b1:
  • time_bounds
  • time_offset
  • qc_total_organics
  • qc_ammonium
  • base_time
  • org_mx_err
  • qc_org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • qc_org_mx
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • qc_nitrate
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • qc_sulfate
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • qc_chloride
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Altitude above mean sea level(alt)
  • East longitude(lon)


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DQRID : D140418.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/08/2014020002/19/20141000Missing
Subject:
SGP/ACSM/C1 - Data not available and unrecoverable
DataStreams:sgpaosacsmC1.b1
Description:
There are no data for this time period.  The ionization filament burned out.  The mentor 
switched to a backup filament on 2/17 and the data stream was good after it was adjusted 
and monitored on 2/19.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D140627.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/25/2014110006/24/20140000Missing
Subject:
SGP/ACSM/C1 - Windows 7 upgrade and turbo molecular pump failure.
DataStreams:sgpaosacsmC1.b1
Description:
Instrument was not operational during this period because of turbo molecular pump failure. 
 the pump was replaced and the instrument restarted.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D141009.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/01/2012000010/09/20140000Does not affect quality
Subject:
SGP/ACSM/C1 - Reprocessing Notice (RID 1237)
DataStreams:sgpaosacsmC1.b1
Description:
See below for details of reprocessing that was completed on 20150610.  Original 
DQR category: 4 (Red, Incorrect).

-----------------------------------------------------------

The data will be reprocessed with the manufacturer's software to correct errors in the 
calibration values, collection efficiencies, and instrument response. The data in the 
current form is incorrect and should not be used.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D141107.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/14/2014130010/27/20141530Missing
Subject:
SGP/ACSM/C1 - computer software problem
DataStreams:sgpaosacsmC1.b1
Description:
There are no data for the time range specified
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D141107.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/25/2014110006/23/20141900Missing
Subject:
SGP/ACSM/C1 - Pump Failure
DataStreams:sgpaosacsmC1.b1
Description:
Turbo pump failure.  No data are available for the specified times.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D141205.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/03/2014162512/04/20142030Incorrect
Subject:
SGP/ACSM/C1 - Unexpected instrument shutdown
DataStreams:sgpaosacsmC1.b1
Description:
There was an unexpected shutdown of the ionizer, vaporizer, SEM, and inlet valve, possibly 
caused by a power outage. This resulted in incorrect data values.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D150210.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/09/2015193002/10/20151740Incorrect
Subject:
SGP/ACSM/C1 - Clogged critical orifice
DataStreams:sgpaosacsmC1.b1
Description:
Instrument was shut down overnight to clean critical orifice.  No useful data were taken 
during this time.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D150223.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/09/2015193002/10/20151740Missing
Subject:
SGP/ACSM/C1 - Critical orifice clogged
DataStreams:sgpaosacsmC1.b1
Description:
Inlet pressure was low because the critical orifice was clogged. Orifice was cleaned and 
the instrument restored to operation.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D150410.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/29/2011130708/02/20111416Missing
08/08/2011101208/09/20112154Missing
12/31/2011221612/31/20112320Missing
11/23/2011183911/25/20111529Missing
10/18/2011090610/18/20111042Missing
12/30/2011202312/30/20112126Missing
07/14/2011225007/18/20111945Missing
12/31/2011193812/31/20112042Missing
12/27/2011175512/27/20111859Missing
03/01/2011000003/01/20112359Missing
10/09/2011125610/09/20111947Missing
Subject:
SGP/ACSM/C1 - missing data
DataStreams:sgpaosacsmC1.b1
Description:
Data for the specified periods are missing because if instrument problems.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D150410.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
11/11/2012220111/15/20120051Missing
10/03/2012014010/03/20121832Missing
03/21/2012105803/21/20121233Missing
04/01/2012010204/03/20120913Missing
05/23/2012180605/23/20121909Missing
07/02/2012162307/03/20122105Missing
07/12/2012103807/30/20122221Missing
06/01/2012000007/01/20120000Missing
11/20/2012135811/21/20121633Missing
Subject:
SGP/ACSM/C1 - missing data
DataStreams:sgpaosacsmC1.b1
Description:
Data for the periods specified is missing because of instrument problems.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D150410.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/27/2013161905/27/20131723Missing
07/01/2013234707/04/20130223Missing
05/10/2013023205/24/20131733Missing
12/09/2013144112/10/20131618Missing
06/09/2013025006/13/20132223Missing
10/25/2013190310/31/20131418Missing
09/21/2013215709/21/20132300Missing
02/26/2013034102/28/20130512Missing
04/01/2013010204/03/20130913Missing
Subject:
SGP/ACSM/C1 - missing data
DataStreams:sgpaosacsmC1.b1
Description:
Data from the specified time periods are missing because of instrument problems.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D150410.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/05/2014205410/06/20141916Missing
05/25/2014000010/01/20140000Missing
10/28/2014132410/28/20141422Missing
02/08/2014010002/23/20140314Missing
05/05/2014124805/05/20141352Missing
10/09/2014130010/09/20141937Missing
12/03/2014143212/05/20140214Missing
10/15/2014165610/27/20141617Missing
01/30/2014153701/30/20141744Missing
03/05/2014144003/05/20141544Missing
Subject:
SGP/ACSM/C1 - missing data
DataStreams:sgpaosacsmC1.b1
Description:
Data are missing for the specified periods because of instrument problems.  Data for the 
period from the end of May through end of September are missing because of the failure of 
two turbo pumps and the return of the instrument to the manufacturer for service.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D150429.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/08/2015053004/27/20151440Incorrect
Subject:
SGP/ACSM/C1 - Vacuum pump failure
DataStreams:sgpaosacsmC1.b1
Description:
The vacuum pump used for pulling samples past the inlet of the ACSM failed.  
The instrument was operational, but not seeing any aerosol. Replacement of the pump solved 
the problem.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D150513.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/08/2015033704/24/20152150Incorrect
Subject:
SGP/ACSM/C1 - Sampling pump failure
DataStreams:sgpaosacsmC1.b1
Description:
The filter switching valve and sampling pump failed.  Data were collected, but no external 
air was being drawn into the system so there is no aerosol signal.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D150702.7
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/24/2015180406/26/20151506Missing
Subject:
SGP/ACSM/C1 - Missing data
DataStreams:sgpaosacsmC1.b1
Description:
The data acquisition program locked up during the period specified.  Program restarted and 
the instrument began collecting data.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D150708.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/06/2015023607/07/20152243Missing
Subject:
SGP/ACSM/C1 - Power outage and calibration
DataStreams:sgpaosacsmC1.b1
Description:
There was a power outage on 2015-07-06 that shut down the instrument.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D150819.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
08/11/2015173910/06/20151927Incorrect
Subject:
SGP/ACSM/C1 - Instrument inlet pressure low
DataStreams:sgpaosacsmC1.b1
Description:
The pressure at the inlet to the instrument was at least 100 torr below ambient after work 
was performed on the vacuum line serving the ACSM. The inlet pressure also dropped from 
1.3 torr to approximately 1 torr.  Examination of the data during reprocessing shows that 
aerosol loadings during the period specified are unreasonably low and suggest that the 
instrument was not sampling ambient air.  The data for the specified period are unreliable 
and should not be used.

I visited SPG to perform ACSM tuning and calibration on 2015-10-06. While there I measured 
the flow in the line bringing sample to the ACSM. The flow was > 45 lpm. This high rate 
was pulling a vacuum on the ACSM sampling line. The vacuum was high when the cyclone was 
in line upstream of the ACSM and was the cause of the low pressure seen after the changes 
to the system were made in August. The flow past the ACSM inlet should be 3 lpm. The 
inlet pressure was ~700 torr when it should be ambient. I disconnected the sampling line 
from the Gast vacuum pump and reconnected and connected it to the Aerodyne pump which is 
part of the dryer system. The flow rate is now 3 lpm, the ambient pressure 740 torr, and the 
inlet pressure 1.3 torr. The instrument was calibrated and is now performing properly.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D150925.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
08/26/2015190009/22/20151319Does not affect quality
Subject:
SGP/ACSM/C1 - Instrument averaging time changed
DataStreams:sgpaosacsmC1.b1
Description:
The number of sets collected in each data write was changed when the instrument was 
restarted on 2015-08-26.  This resulted in a change in the averaging time from 30 minutes to 10 
minutes.  Users should be aware that the data during this period are 10 minute averages 
and not the standard 30 minute average.  The original settings were restored on 
2015-09-22 at 13:19.  Other than the change in averaging time the data are unaffected.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • time_offset
  • org_mx
  • base_time
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time


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DQRID : D151120.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
11/03/2015180311/18/20151836Incorrect
Subject:
SGP/ACSM/C1 - Filter switching valve failure
DataStreams:sgpaosacsmC1.b1
Description:
Data are incorrect or not available for the period the switching valve was not working.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D160104.7
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/26/2015000001/01/20162359Does not affect quality
Subject:
SGP Site Power Outage Due to Winter Storm
DataStreams:sgpaosacsmC1.b1
Description:
On Saturday and Sunday, December 26 and 27th a powerful winter storm (Goliath) brought 
sleet and freezing rain to much of Oklahoma with wind gusts of 45 MPH at times. The result 
was very very slick roads and mass power outages.
 
The SGP central facility lost power at 8:55 PM CDT on Sunday, December 27th.  
The power was restored on 7:56 PM CDT on Wednesday, December 30th
 
Site Emergency procedures were activated and Technicians drained water out of instrument 
reservoirs and other measures as needed, early Monday morning.
 
On Wednesdays as roads and power started was restored to much of the areas east of I-35 , 
Site Technicians performed maintenance on several Extended Facilities.

During this period, data are potentially missing, incorrect, or suspect.  Carefully 
inspect the data before use.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D160105.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/28/2015012901/04/20161558Missing
Subject:
SGP/ACSM/C1 - Power outage
DataStreams:sgpaosacsmC1.b1
Description:
Power was out at the SGP central facility from 2015-12-28 to 2015-12-30.  The instrument 
was restarted on 2016-01-04.  There are no data for the time period specified.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D160119.9
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/14/2016134801/14/20161838Missing
Subject:
SGP/ACSM/C1 - instrument calibration
DataStreams:sgpaosacsmC1.b1
Description:
The ACSM was offline for tuning and calibration during the period specified.
Measurements:sgpaosacsmC1.b1:
  • time_offset
  • base_time
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • East longitude(lon)
  • Altitude above mean sea level(alt)


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DQRID : D160406.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/18/2016040003/18/20161100Does not affect quality
03/25/2016010003/25/20160700Does not affect quality
Subject:
SGP/AOS/C1 - Wildfire smoke plumes advecting over facility
DataStreams:sgpaosacsmC1.b1
Description:
Smoke from nearby wildfires advected through SGP C1 during the listed affected time 
ranges, resulting in high signals observable in many of the listed AOS datastreams.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D160715.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/01/2011001209/30/20142359Does not affect quality
Subject:
SGP/ACSM/NEPHELOMETER/TDMA/C1 - Data Quality Evaluation Ongoing
DataStreams:sgpaosacsmC1.b1
Description:
A closure analysis is currently being perform on the ACSM, TDMA, and wet and dry NOAA 
NEPHELOMETERS at SGP C1. If problems are found during this analysis, they will be promptly 
documented through the DQR system.  The results of this analysis will be made available 
once completed.  Please contact the respective instrument mentors with any questions 
regarding these data over the specified period.
Measurements:sgpaosacsmC1.b1:
  • time_bounds
  • time_offset
  • qc_total_organics
  • qc_ammonium
  • base_time
  • org_mx_err
  • qc_org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • qc_org_mx
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • qc_nitrate
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • qc_sulfate
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • qc_chloride
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Altitude above mean sea level(alt)
  • East longitude(lon)


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DQRID : D160909.12
Start DateStart TimeEnd DateEnd Time Data Quality Metric
08/12/2016205508/31/20161249Incorrect
Subject:
SGP/ACSM/C1 - Filter switching valve not operating
DataStreams:sgpaosacsmC1.b1
Description:
Filter switching valve was not operating because of a faulty circuit board.  Problem was 
fixed and data have been collected from the end of the specified time period.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D161005.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
09/02/2016143009/14/20161811Suspect
Subject:
SGP/ACSM/C1 - Low inlet pressure in sample position
DataStreams:sgpaosacsmC1.b1
Description:
The data are suspect because the new filter switching valve was out of adjustment causing 
low inlet pressure in the sample position.  The problem was corrected by the onsite 
operator.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D161005.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/03/2016170011/17/20162359Missing
Subject:
SGP/ACSM/C1 - Instrument leak and updated for new system
DataStreams:sgpaosacsmC1.b1
Description:
The instrument developed a leak and the instrument mentor requested the instrument be 
removed and sent back for repairs and upgrades for the new AOS. The new configuration of the 
instrument would not fit into the AOS racks.
Measurements:sgpaosacsmC1.b1:
  • time_bounds
  • time_offset
  • qc_total_organics
  • qc_ammonium
  • base_time
  • org_mx_err
  • qc_org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • qc_org_mx
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)
  • qc_nitrate
  • time
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • North latitude(lat)
  • org_mx
  • qc_sulfate
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • qc_chloride
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Altitude above mean sea level(alt)
  • East longitude(lon)


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DQRID : D161027.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/17/2016120010/18/20160200Does not affect quality
Subject:
SGP/AOS/C1 - Environmental Smoke
DataStreams:sgpaosacsmC1.b1
Description:
Large aerosol signal associated with local agricultural or grass fires
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


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DQRID : D161216.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/14/2016205812/15/20162155Suspect
Subject:
SGP/ACSM/C1 - Critical orifice clog
DataStreams:sgpaosacsmC1.b1
Description:
Critical orifice was clogged during the period specified.  Data are corrected for reduced 
sample flow, but may be noisy because of reduced signal.
Measurements:sgpaosacsmC1.b1:
  • Mass concentration of chloride, ambient aerosol in air(chloride)
  • org_mx
  • Mass concentration of total organics, ambient aerosol in air.(total_organics)
  • amus
  • org_mx_err
  • Mass concentration of nitrate, ambient aerosol in air.(nitrate)
  • Mass concentration of sulfate, ambient aerosol in air.(sulfate)
  • Mass concentration of ammonium, ambient aerosol in air(ammonium)


Back To Table of Contents



END OF DATA