Data Quality Reports for Session: 179220 User: stemmlerj2 Completed: 08/24/2016

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D100715.3GRW/AOS/M1 - CCN Detector misalignmentgrwaosccnM1.a1Incorrect
D100915.1GRW/AOS/M1 - Annual maintenancegrwaosccnM1.a1Incorrect
D111005.3GRW/AOS/M1 - CCN signal declinegrwaosccnM1.a1Incorrect


DQRID : D100715.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/02/2010180007/13/20101600Incorrect
Subject:
GRW/AOS/M1 - CCN Detector misalignment
DataStreams:grwaosccnM1.a1
Description:
The CCN signal was unusually low about 100 particles/cc. The %SS growth curves were 
asymmetrical. Upon consultation with the manufacturer, DMT, it was predicted that the OPC 
detector was clogged or misaligned. I had the tech, Carlos, remove the detector and ship it 
back to Boulder. The detector was cleaned. An o-ring for a lens wasn't properly seated. The 
OPC was sent back to GRW and installed. Data looks normal after the reinstallation on 
July 13th.
Measurements:grwaosccnM1.a1:
  • AOS number concentration of CCN(N_CCN)
  • AOS CCN droplet count by bin size(N_CCN_dN)
  • AOS bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)

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DQRID : D100915.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/20/2010081005/26/20101100Incorrect
Subject:
GRW/AOS/M1 - Annual maintenance
DataStreams:grwaosccnM1.a1
Description:
Instruments were down for annual maintenance.
Measurements:grwaosccnM1.a1:
  • Altitude above mean sea level(alt)
  • CCN_ss_set
  • Size of upper limit of each CCN bin(CCN_UpperSizeLimit)
  • CCN_Temperature_Gradient
  • CCN_T_nafion
  • CCN_FirstStageMonitorVoltage
  • CCN_T_OPC
  • CCN_Q_sheath
  • time
  • AOS number concentration of CCN(N_CCN)
  • CCN_T_inlet
  • base_time
  • AOS bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)
  • CCN_laser_current
  • CCN_P_sample
  • CCN_dT_TEC3_TEC1_StdDev
  • CCN_temp_unstable_flag
  • CCN_Q_sample
  • CCN_T_TEC2
  • CCN_T_TEC1
  • North latitude(lat)
  • CCN_T_TEC3
  • CCN_T_sample
  • CCN_ss_calc
  • East longitude(lon)
  • time_offset
  • AOS CCN droplet count by bin size(N_CCN_dN)
  • CCN_ProportionalValveVoltage

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DQRID : D111005.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/01/2010000006/02/20101800Incorrect
Subject:
GRW/AOS/M1 - CCN signal decline
DataStreams:grwaosccnM1.a1
Description:
There was a slow decline in the CCN signal from January to June of 2010 at GRW. The reason 
for this decline is unknown as all the instrument operating parameters appear normal. 
The decline was likely from a change in the CCN column thermal properties or a clogging of 
the detector inlet.
Measurements:grwaosccnM1.a1:
  • CCN_dT_TEC3_TEC1_StdDev
  • CCN_P_sample
  • CCN_laser_current
  • CCN_Q_sample
  • CCN_temp_unstable_flag
  • Size of upper limit of each CCN bin(CCN_UpperSizeLimit)
  • CCN_ss_set
  • CCN_T_TEC2
  • CCN_T_TEC1
  • CCN_T_nafion
  • CCN_Temperature_Gradient
  • CCN_FirstStageMonitorVoltage
  • CCN_T_TEC3
  • CCN_T_OPC
  • CCN_ss_calc
  • CCN_T_sample
  • CCN_Q_sheath
  • AOS number concentration of CCN(N_CCN)
  • CCN_T_inlet
  • CCN_ProportionalValveVoltage
  • AOS CCN droplet count by bin size(N_CCN_dN)
  • AOS bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)

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END OF DATA