DQRID : D071218.1
Start DateStart TimeEnd DateEnd Time
12/09/2007102012/18/20070100
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Subject:
FKB/AOS/M1 - failed neph motor
DataStreams:fkbaosM1.a1
Description:
The chopper motor in the "dry" nephelometer (Neph1) stopped working on Julian day 343.15 
or 12/9/07 0330 UTC. This motor controls a chopper wheel which alternates the signal 
between a "dark" phase, "calibration" phase and signal. Logging on the instrument was turned 
off on 12/18/2007 at 0100 UTC.The second nephelometer (Neph2) was used to replace Neph1. 
Data logging resumed on day 352 or 12/20/2007 using the replacement neph. From day 347 to 
352, Neph 2 was logging data without use of the humidifier. The neph2 data during this 
time can be used as the dry neph scattering coefficients.
Suggestions: 
null
Measurements:fkbaosM1.a1:
  • Aerosol backwards-hemispheric light scattering coefficient, red channel, 10um(Bbs_R_Dry_10um_Neph3W_1)
  • Aerosol total light scattering coefficient, blue channel, 10 um size cut, wet
    three wavelength nephelometer(Bs_B_Wet_10um_Neph3W_2)
  • Aerosol total light scattering coefficient, Ref. Humidograph nephelometer blue
    channel, 1 um particle diameter(Bs_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)
  • Aerosol backwards-hemispheric light scattering coefficient, Humidograph
    nephelometer green channel, 10 um particle diameter(Bbs_G_Wet_10um_Neph3W_2)
  • Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
    size cut, reference three wavelength nephelometer(Bbs_B_Dry_1um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, Humidograph
    nephelometer blue channel, 1 um particle diameter(Bbs_B_Wet_1um_Neph3W_2)
  • Aerosol total light scattering coefficient, Humidograph nephelometer red
    channel, 1 um particle diameter(Bs_R_Wet_1um_Neph3W_2)
  • Back-scattering coefficient, green wavelength, low RH, 10 um size cut(Bbs_G_Dry_10um_Neph3W_1)
  • Aerosol total light scattering coefficient, Humidograph nephelometer green
    channel, 10 um particle diameter(Bs_G_Wet_10um_Neph3W_2)
  • Aerosol backwards-hemispheric light scattering coefficient, humidograph
    nephelometer red channel, 10 um particle diameter(Bbs_R_Wet_10um_Neph3W_2)
  • Aerosol total light scattering coefficient, reference nephelometer red channel,
    1 um particle diameter(Bs_R_Dry_1um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, reference
    nephelometer red channel, 1 um particle diameter(Bbs_R_Dry_1um_Neph3W_1)
  • Aerosol total light scattering coefficient, blue channel, 10 um size cut,
    reference three wavelength nephelometer(Bs_B_Dry_10um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10um(Bbs_B_Dry_10um_Neph3W_1)
  • Back-scattering coefficient, green wavelength, high RH, 1 um size cut(Bbs_G_Wet_1um_Neph3W_2)
  • Back-scattering coefficient, red wavelength, high RH, 1 um size cut(Bbs_R_Wet_1um_Neph3W_2)
  • Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10 um
    size cut, wet three wavelength nephelometer(Bbs_B_Wet_10um_Neph3W_2)
  • Aerosol total light scattering coefficient, humidograph nephelometer blue
    channel, 1 um particle diameter(Bs_B_Wet_1um_Neph3W_2)
  • Aerosol total light scattering coefficient, Humidograph nephelometer green
    channel, 1 um particle diameter(Bs_G_Wet_1um_Neph3W_2)
  • Aerosol total light scattering coefficient, Humidograph nephelometer red
    channel, 10 um particle diameter(Bs_R_Wet_10um_Neph3W_2)
  • Aerosol total light scattering coefficient, red channel, 10 um particle size(Bs_R_Dry_10um_Neph3W_1)
  • Aerosol total light scattering coefficient, reference nephelometer green
    channel, 10 um particle diameter(Bs_G_Dry_10um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
    size cut, reference three wavelength nephelometer(Bbs_G_Dry_1um_Neph3W_1)
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