DQRID : D061206.2
Start DateStart TimeEnd DateEnd Time
03/23/2006100005/04/20061800
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Subject:
NIM/AOS/M1 - Impactor switch stuck in 10 micron mode
DataStreams:nimaosM1.a1
Description:
A wire came loose in the ball valve that switches between the two impactor size cuts. The 
impactor was stuck on the sub 10 micron size cut during this period of time. There was no 
data from the sub 1 micron size cut during this time.
Suggestions: 
Assume all data from the psap and nephelometers is from the sub 10 micron size cut.
Measurements:nimaosM1.a1:
  • Aerosol light absorption coefficient, green channel, 1 um particle diameter(Ba_G_Dry_1um_PSAP1W_1)
  • Aerosol total light scattering coefficient, Humidograph nephelometer green
    channel, 1 um particle diameter(Bs_G_Wet_1um_Neph3W_2)
  • Absorption coefficient green, corrected for flow and sample area, 3 wavelength
    PSAP, 1 um size cut(Ba_G_Dry_1um_PSAP3W_1)
  • 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, 1 um
    size cut, reference three wavelength nephelometer(Bbs_B_Dry_1um_Neph3W_1)
  • Aerosol total light scattering coefficient, reference nephelometer red channel,
    1 um particle diameter(Bs_R_Dry_1um_Neph3W_1)
  • Absorption coefficient, blue wavelength, 3 wavelength PSAP, low RH, 1 um size
    cut(Ba_B_Dry_1um_PSAP3W_1)
  • Aerosol total light scattering coefficient, humidograph nephelometer blue
    channel, 1 um particle diameter(Bs_B_Wet_1um_Neph3W_2)
  • Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
    size cut, reference three wavelength nephelometer(Bbs_G_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 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, high RH, 1 um size cut(Bbs_G_Wet_1um_Neph3W_2)
  • Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
    PSAP, 1 um size cut(Ba_R_Dry_1um_PSAP3W_1)
  • Aerosol total light scattering coefficient, Ref. Humidograph nephelometer blue
    channel, 1 um particle diameter(Bs_B_Dry_1um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, reference
    nephelometer red channel, 1 um particle diameter(Bbs_R_Dry_1um_Neph3W_1)
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