DQRs for Session: 186110 User:gallof1Completed: 06-13-2017

Data Quality Reports for Session: 186110 User: gallof1 Completed: 06/13/2017

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected	Data Quality Metric
D160909.20	ENA/AOS/C1 - Flow problem affecting concentrations	enaaoscpcfC1.a1	Incorrect
D161025.6	ENA/AOS/C1 - Instrument mentors working at the site	enaaoscpcfC1.a1	Suspect
D170303.12	ENA/AOS/C1 - Dry air supply intermittently not working	enaaoscpcfC1.a1	Does not affect quality
D170320.2	ENA/CPC/C1 - Changes to upstream plumbing, may not have been sampling ambient.	enaaoscpcfC1.a1	Incorrect

DQRID : D160909.20

Start Date	Start Time	End Date	End Time	Data Quality Metric
09/08/2016	0035	09/08/2016	1501	Incorrect

Subject:	ENA/AOS/C1 - Flow problem affecting concentrations
DataStreams:	enaaoscpcfC1.a1
Description:	Due to a flow problem with another instrument on the same sample line, the concentrations reported by the CPC are not representative of the atmospheric concentration of particles
Measurements:	enaaoscpcfC1.a1: Aerosol concentration averaged over times to match N_CCN(concentration)

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DQRID : D161025.6

Start Date	Start Time	End Date	End Time	Data Quality Metric
09/26/2016	0830	10/01/2016	0100	Suspect

Subject:	ENA/AOS/C1 - Instrument mentors working at the site
DataStreams:	enaaoscpcfC1.a1
Description:	Instrument mentors working at the site. Sample lines and electrical connections being reconfigured. Instruments that had no work done on them may still be affected.
Measurements:	enaaoscpcfC1.a1: dilution_flow_setpoint laser_current nozzle_pressure ambient_temp fraction_full ambient_pressure Aerosol concentration averaged over times to match N_CCN(concentration) liquid_level dilution_valve_position optics_temp orifice_pressure condensation_temp saturation_temp cabinet_temp dilution_flow_reading

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DQRID : D170303.12

Start Date	Start Time	End Date	End Time	Data Quality Metric
06/20/2016	0000	03/03/2017	0000	Does not affect quality

Subject:	ENA/AOS/C1 - Dry air supply intermittently not working
DataStreams:	enaaoscpcfC1.a1
Description:	Pentras dry air supply intermittently not working. Dry air missing for the humidigraph and the HT-DMA. Dry air supply for those instruments partially replaced by regular undried compressed air, lowering the delivery pressure. No direct effect on other instruments seen.
Measurements:	enaaoscpcfC1.a1: East longitude(lon) dilution_flow_setpoint laser_current nozzle_pressure time fraction_full ambient_pressure Aerosol concentration averaged over times to match N_CCN(concentration) time_offset liquid_level dilution_valve_position optics_temp orifice_pressure condensation_temp Altitude above mean sea level(alt) saturation_temp North latitude(lat) base_time cabinet_temp dilution_flow_reading

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DQRID : D170320.2

Start Date	Start Time	End Date	End Time	Data Quality Metric
02/22/2017	1740	02/22/2017	1958	Incorrect

Subject:	ENA/CPC/C1 - Changes to upstream plumbing, may not have been sampling ambient.
DataStreams:	enaaoscpcfC1.a1
Description:	During this time period, changes were being made to upstream plumbing (i.e. the impactor). The cpcf may not have been receiving all sample flow from the ambient during this time period.
Measurements:	enaaoscpcfC1.a1: Aerosol concentration averaged over times to match N_CCN(concentration)

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