DQRs for Session: 182573 User:zhangy1Completed: 01-03-2017

Data Quality Reports for Session: 182573 User: zhangy1 Completed: 01/03/2017

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected	Data Quality Metric
D140530.2	MAO/SMPS/S1 - clogged impactor at the SMPS aerosol sample inlet	maoaossmpsS1.a1	Suspect
D140815.1	MAO/AOS/S1/M1 - Instrument maintenance	maoaossmpsS1.a1	Incorrect
D141203.3	MAO/ALL/S1 - Inlet down/off for cleaning and maintenance.	maoaossmpsS1.a1	Incorrect
D150311.17	MAO/SMPS/S1 - Instrument maintenance	maoaossmpsS1.a1	Incorrect
D150429.6	MAO/AOS/S1 - Flow rate change	maoaossmpsS1.a1	Does not affect quality
D151203.4	MAO/SMPS/S1 - Reprocess: SMPS data	maoaossmpsS1.a1	Does not affect quality

DQRID : D140530.2

Start Date	Start Time	End Date	End Time	Data Quality Metric
05/07/2014	1430	05/13/2014	2043	Suspect

Subject:	MAO/SMPS/S1 - clogged impactor at the SMPS aerosol sample inlet
DataStreams:	maoaossmpsS1.a1
Description:	The clogging of the impactor leads to a decrease in the aerosol sample flow rate of the SMPS, which is nominally 1 lpm. This decrease in the SMPS sample flow rate results in an underestimation of the ambient size distribution and integrated number concentration.
Measurements:	maoaossmpsS1.a1: aerosol_flow CPC_inlet_flow Total concentration(total_concentration) Number size distribution (dN/dlogDp)(number_size_distribution) CPC_sample_flow

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DQRID : D140815.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
08/09/2014	1600	08/15/2014	1500	Incorrect

Subject:	MAO/AOS/S1/M1 - Instrument maintenance
DataStreams:	maoaossmpsS1.a1
Description:	Instrument maintenance and cleaning inlets affecting data.
Measurements:	maoaossmpsS1.a1: gas_viscosity median low_voltage geometric_mean lower_size Sample temperature(sample_temperature) high_voltage mean sheath_flow aerosol_flow d50 CPC_inlet_flow mean_free_path Number size distribution (dN/dlogDp)(number_size_distribution) diameter_midpoint sample_pressure geometric_mean_std status_flag mode CPC_sample_flow

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DQRID : D141203.3

Start Date	Start Time	End Date	End Time	Data Quality Metric
08/10/2014	1325	08/10/2014	2115	Incorrect

Subject:	MAO/ALL/S1 - Inlet down/off for cleaning and maintenance.
DataStreams:	maoaossmpsS1.a1
Description:	Inlet stack of MAOS A lowered. All instruments on internal cabin air. No atmospheric validity on HTDMA, PSAP, f(RH) dry neph, wet neph, aethalometer, PASS3, SP2, ACSM, CCN-200, Impactor, CPC, UCPC, SMPS.
Measurements:	maoaossmpsS1.a1: gas_viscosity median low_voltage geometric_mean lower_size Sample temperature(sample_temperature) high_voltage mean sheath_flow aerosol_flow d50 CPC_inlet_flow Total concentration(total_concentration) mean_free_path Number size distribution (dN/dlogDp)(number_size_distribution) diameter_midpoint geometric_mean_std sample_pressure status_flag mode CPC_sample_flow

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DQRID : D150311.17

Start Date	Start Time	End Date	End Time	Data Quality Metric
03/06/2015	1558	03/06/2015	1612	Incorrect
03/05/2015	1458	03/05/2015	1522	Incorrect
03/04/2015	1345	03/04/2015	1348	Incorrect
03/05/2015	1458	03/06/2015	1848	Incorrect
03/05/2015	1351	03/05/2015	1414	Incorrect
03/04/2015	1302	03/04/2015	1317	Incorrect
03/05/2015	1435	03/05/2015	1458	Incorrect

Subject:	MAO/SMPS/S1 - Instrument maintenance
DataStreams:	maoaossmpsS1.a1
Description:	A number of instrument maintenance tasks were performed. The flow rate of the system from the impactor was tested. Inlet flow rates and nozzle pressures were examined on the CPC 3772. The accuracy of the classifier voltage and sheath flow rates were evaluated. A HEPA filter zero test was performed. During an approximately 24 hour period, the voltage cable was left unplugged from the classifier.
Measurements:	maoaossmpsS1.a1: median low_voltage geometric_mean lower_size high_voltage mean d50 Total concentration(total_concentration) mean_free_path Number size distribution (dN/dlogDp)(number_size_distribution) diameter_midpoint geometric_mean_std mode

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DQRID : D150429.6

Start Date	Start Time	End Date	End Time	Data Quality Metric
11/17/2014	1300	04/20/2015	1845	Does not affect quality

Subject:	MAO/AOS/S1 - Flow rate change
DataStreams:	maoaossmpsS1.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:	maoaossmpsS1.a1: gas_viscosity median low_voltage geometric_mean lower_size Sample temperature(sample_temperature) high_voltage mean sheath_flow aerosol_flow d50 CPC_inlet_flow Total concentration(total_concentration) mean_free_path Number size distribution (dN/dlogDp)(number_size_distribution) diameter_midpoint geometric_mean_std sample_pressure status_flag mode CPC_sample_flow

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DQRID : D151203.4

Start Date	Start Time	End Date	End Time	Data Quality Metric
01/29/2014	0000	12/28/2015	0000	Does not affect quality

Subject:	MAO/SMPS/S1 - Reprocess: SMPS data
DataStreams:	maoaossmpsS1.a1
Description:	No affect on data quality
Measurements:	maoaossmpsS1.a1: status_flag

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