Data Quality Reports for Session: 184376 User: tongs1 Completed: 03/20/2017

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D100129.1GRW/AOS/M1 - CPC TEC failuregrwaosM1.a1Missing
D100915.1GRW/AOS/M1 - Annual maintenancegrwaosM1.a1Incorrect
D101020.2GRW/AOS/M1 - Data processing problemgrwaosM1.a1Does not affect quality
D120820.1GRW/AOS/M1 - CPC undercountinggrwaosM1.a1Incorrect


DQRID : D100129.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/19/2009184401/15/20101820Missing
Subject:
GRW/AOS/M1 - CPC TEC failure
DataStreams:grwaosM1.a1
Description:
The thermal electric cooler, which controls the temperature in the Condensation Particle 
Counter, failed. A new TEC was mailed to GRW. The TEC was replaced and the CPC was working 
again on Jan. 15th, 2010.
Measurements:grwaosM1.a1:
  • Condensation nuclei concentration number(N_CPC_1)

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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:grwaosM1.a1
Description:
Instruments were down for annual maintenance.
Measurements:grwaosM1.a1:
  • Absorption coefficient blue, corrected for flow and sample area, 3 wavelength
    PSAP, 1 um size cut(Ba_B_Dry_1um_PSAP3W_1)
  • T_NephInlet_Wet
  • Condensation nuclei concentration number(N_CPC_1)
  • Aerosol backwards-hemispheric light scattering coefficient, Humidograph
    nephelometer red channel, 10(Bbs_R_Wet_10um_Neph3W_2)
  • Absorption coefficient blue, corrected for flow and sample area, 3 wavelength
    PSAP, 10 um size cut(Ba_B_Dry_10um_PSAP3W_1)
  • Aerosol total light scattering coefficient, ref. humidograph nephelometer red
    channel, 1 um particle diameter(Bs_R_Dry_1um_Neph3W_1)
  • Aerosol total light scattering coefficient, Humidograph nephelometer red
    channel, 1 um particle diam(Bs_R_Wet_1um_Neph3W_2)
  • RH_NephVol_Wet
  • Aerosol backwards-hemispheric light scattering coefficient, reference
    nephelometer red channel, 1 um particle diameter(Bbs_R_Dry_1um_Neph3W_1)
  • P_Neph_Dry
  • Wind direction, relative to true North(WindDirection)
  • Aerosol total light scattering coefficient, Humidograph nephelometer blue
    channel, 10 um particle di(Bs_B_Wet_10um_Neph3W_2)
  • Absorption coefficient red, corrected for flow and sample area, 3 wavelength
    PSAP, 1 um size cut(Ba_R_Dry_1um_PSAP3W_1)
  • Absorption coefficient, green wavelength, low RH, 1 um size cut(Ba_G_Dry_1um_PSAP1W_1)
  • East longitude(lon)
  • Aerosol total light scattering coefficient, reference nephelometer green
    channel, 10 um particle diameter(Bs_G_Dry_10um_Neph3W_1)
  • time
  • Total scattering coefficient, blue wavelength, low RH, 1 um size cut(Bs_B_Dry_1um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, Humidograph
    nephelometer green channel,(Bbs_G_Wet_10um_Neph3W_2)
  • Absorption coefficient red, corrected for flow and sample area, 3 wavelength
    PSAP, 10 um size cut(Ba_R_Dry_10um_PSAP3W_1)
  • Back-scattering coefficient, blue wavelength, low RH, 10 um size cut(Bbs_B_Dry_10um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, Humidograph
    nephelometer red channel, 1(Bbs_R_Wet_1um_Neph3W_2)
  • Aerosol backwards-hemispheric light scattering coefficient, ref. humidograph
    nephelometer blue channel, 1 um particle diameter(Bbs_B_Dry_1um_Neph3W_1)
  • Aerosol total light scattering coefficient, Ref. Humidograph nephelometer green
    channel, 1 um particle diameter(Bs_G_Dry_1um_Neph3W_1)
  • T_MainInlet
  • North latitude(lat)
  • RH_NephInlet_Wet
  • flags_NOAA
  • Aerosol total light scattering coefficient, reference nephelometer blue channel,
    1 um particle diameter(Bs_B_Wet_1um_Neph3W_2)
  • Particle Concentration Number from summation of Optical Particle Counter size
    bins(N_OPC_1)
  • RH_MainInlet
  • Aerosol backwards-hemispheric light scattering coefficient, Humidograph
    nephelometer green channel,(Bbs_G_Wet_1um_Neph3W_2)
  • Aerosol total light scattering coefficient, reference nephelometer blue channel,
    10 um particle diam(Bs_B_Dry_10um_Neph3W_1)
  • Absorption coefficient, green wavelength, 3 wavelength PSAP, low RH, 10 um size
    cut(Ba_G_Dry_10um_PSAP3W_1)
  • Aerosol total light scattering coefficient, reference nephelometer red channel,
    10 um particle diameter(Bs_R_Dry_10um_Neph3W_1)
  • Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
    PSAP, 1 um size cut(Ba_G_Dry_1um_PSAP3W_1)
  • T_NephVol_Dry
  • Absorption coefficient, green wavelength, low RH, 10 um size cut(Ba_G_Dry_10um_PSAP1W_1)
  • T_preHG
  • Ambient air relative humidity(RH_Ambient)
  • Aerosol total light scattering coefficient, reference nephelometer green
    channel, 1 um particle diameter(Bs_G_Wet_1um_Neph3W_2)
  • Altitude above mean sea level(alt)
  • Aerosol total light scattering coefficient, reference nephelometer red channel,
    10 um particle diameter(Bs_R_Wet_10um_Neph3W_2)
  • time_offset
  • RH_postHG
  • P_Neph_Wet
  • Aerosol backwards-hemispheric light scattering coefficient, reference
    nephelometer red channel, 10 um particle diameter(Bbs_R_Dry_10um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, reference
    nephelometer blue channel, 1 um particle diameter(Bbs_B_Wet_1um_Neph3W_2)
  • Ambient air temperature(T_Ambient)
  • Aerosol backwards-hemispheric light scattering coefficient, Humidograph
    nephelometer blue channel, 1(Bbs_B_Wet_10um_Neph3W_2)
  • Ambient pressure(P_Ambient)
  • Aerosol backwards-hemispheric light scattering coefficient, ref. humidograph
    nephelometer green channel, 1 um particle diameter(Bbs_G_Dry_1um_Neph3W_1)
  • RH_NephInlet_Dry
  • Wind speed(WindSpeed)
  • Aerosol backwards-hemispheric light scattering coefficient, reference
    nephelometer green channel, 10(Bbs_G_Dry_10um_Neph3W_1)
  • T_postHG
  • T_NephInlet_Dry
  • T_NephVol_Wet
  • Aerosol total light scattering coefficient, Humidograph nephelometer green
    channel, 10 um particle d(Bs_G_Wet_10um_Neph3W_2)
  • RH_preHG
  • base_time
  • RH_NephVol_Dry

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DQRID : D101020.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/15/2009000012/31/20090000Does not affect quality
Subject:
GRW/AOS/M1 - Data processing problem
DataStreams:grwaosM1.a1
Description:
The AOS data was reprocessed for the AMF, SGP and NSA sites. There was an error in the 
processing of the corrections for the PSAP absorption signal such that a low pass filter was 
implemented for the scattering data used in these corrections.The difference between the 
corrected and previous data is < 0.05 Mm-1 (below the instrument detection limit) and 
should not have a significant effect on the previous data. Data will be reprocessed at a 
later time when more significant changes to the data processing are implemented.
Measurements:grwaosM1.a1:
  • Absorption coefficient blue, corrected for flow and sample area, 3 wavelength
    PSAP, 1 um size cut(Ba_B_Dry_1um_PSAP3W_1)
  • Absorption coefficient red, corrected for flow and sample area, 3 wavelength
    PSAP, 10 um size cut(Ba_R_Dry_10um_PSAP3W_1)
  • Absorption coefficient, green wavelength, 3 wavelength PSAP, low RH, 10 um size
    cut(Ba_G_Dry_10um_PSAP3W_1)
  • Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
    PSAP, 1 um size cut(Ba_G_Dry_1um_PSAP3W_1)
  • Absorption coefficient blue, corrected for flow and sample area, 3 wavelength
    PSAP, 10 um size cut(Ba_B_Dry_10um_PSAP3W_1)
  • Absorption coefficient red, corrected for flow and sample area, 3 wavelength
    PSAP, 1 um size cut(Ba_R_Dry_1um_PSAP3W_1)
  • Absorption coefficient, green wavelength, low RH, 10 um size cut(Ba_G_Dry_10um_PSAP1W_1)
  • Absorption coefficient, green wavelength, low RH, 1 um size cut(Ba_G_Dry_1um_PSAP1W_1)

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DQRID : D120820.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/27/2009000009/08/20090825Incorrect
Subject:
GRW/AOS/M1 - CPC undercounting
DataStreams:grwaosM1.a1
Description:
The CPC was undercounting by about 10-20 percent relative to the CCN. After cleaning the 
CPC and replacing the butanol, the signal increased to above that of the CCN.

Increase CPC signal so that it equals the CCN signal at the maximum SS value. The 
corrected signal will represent relative and not an absolute particle concentration.
Measurements:grwaosM1.a1:
  • Condensation nuclei concentration number(N_CPC_1)

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