SGP/AOS/C1 - Nephelometer shutter error

The neph backscatter shutter started to fail which resulted in large background values in 
the dry nephelometer. The data is poor quality even though it may look ok.

Instead use the data in the wet nephelometer. Note that during some of this time period 
the RH value inside of this neph ramped up and down so use data at the low RH values.

• hemispheric_backscatter_fraction_green_10um
• Total scattering coefficient at 1 um from 450 nm TSI Low RH Nephelometer(BluTScatCoef_1um_LRH)
• Aerosol forcing per unit optical depth, 10 um size cut(aerosol_forcing_efficiency_10um)
• average_upscatter_fraction_green_10um
• Backscattering coefficient at 10 um, from 450 nm TSI Low RH Nephelometer(BluBScatCoef_10um_LRH)
• single_scattering_albedo_1um
• angstrom_exponent_bluered_10um
• average_upscatter_fraction_green_1um
• angstrom_exponent_bluegreen_10um
• Backscattering coefficient at 1 um from 550 nm TSI Low RH Nephelometer(GrnBScatCoef_1um_LRH)
• hemispheric_backscatter_fraction_green_1um
• angstrom_exponent_bluegreen_1um
• asymmetry_factor_green_1um
• single_scattering_albedo_10um
• Backscattering coefficient at 10 um from 550 nm TSI Low RH Nephelometer(GrnBScatCoef_10um_LRH)
• Aerosol forcing per unit optical depth, 1 um size cut(aerosol_forcing_efficiency_1um)
• Total scattering coefficient at 1 um from 700 nm TSI Low RH Nephelometer(RedTScatCoef_1um_LRH)
• angstrom_exponent_greenred_1um
• Backscattering coefficient at 1 um from 700 nm TSI Low RH Nephelometer(RedBScatCoef_1um_LRH)
• hemispheric_backscatter_fraction_red_10um
• Total scattering coefficient at 10 um from 550 nm TSI Low RH Nephelometer(GrnTScatCoef_10um_LRH)
• asymmetry_factor_green_10um
• Total scattering coefficient at 1 um from 550 nm TSI Low RH Nephelometer(GrnTScatCoef_1um_LRH)
• Backscattering coefficient at 1 um, from 450 nm TSI Low RH Nephelometer(BluBScatCoef_1um_LRH)
• hemispheric_backscatter_fraction_blue_10um
• hemispheric_backscatter_fraction_red_1um
• hemispheric_backscatter_fraction_blue_1um
• angstrom_exponent_greenred_10um
• Total scattering coefficient at 10 um from 700 nm TSI Low RH Nephelometer(RedTScatCoef_10um_LRH)
• Backscattering coefficient at 10 um from 700 nm TSI Low RH Nephelometer(RedBScatCoef_10um_LRH)
• Total scattering coefficient at 10 um from 450 nm TSI Low RH Nephelometer(BluTScatCoef_10um_LRH)
• angstrom_exponent_bluered_1um

SGP/AOS/C1 - Missing data

Data are missing and unrecoverable.

• Aerosol backwards-hemispheric light scattering coefficient, Ref. Humidograph
  nephelometer green chan(Bbs_G_Dry_1um_Neph3W_1)
• Back-scattering coefficient, blue wavelength, low RH, 10 um size cut(Bbs_B_Dry_10um_Neph3W_1)
• Angstrom exponent computed from blue/green ratio, 1 um size cut, Neph3W
  backscatter data(Bbs_angstrom_exponent_BG_Dry_1um)
• Aerosol total light scattering coefficient, reference nephelometer red channel,
  10 um particle diameter(Bs_R_Dry_10um_Neph3W_1)
• Wet_Dry_Ratio_Bbs_R_1um_Neph3W
• Angstrom exponent computed from blue/green ratio, 10 um size cut, PSAP3W data(Ba_angstrom_exponent_BG_Dry_10um)
• Wet_Dry_Ratio_Bbs_B_1um_Neph3W
• RH_NephVol_Wet
• Angstrom exponent computed from green/red ratio, 10 um size cut, PSAP3W data(Ba_angstrom_exponent_GR_Dry_10um)
• Td_postHG
• Aerosol backwards-hemispheric light scattering coefficient, Humidograph
  nephelometer blue channel, 1(Bbs_B_Wet_10um_Neph3W_2)
• Single scattering albedo, red wavelength, low RH, 10 um size cut(ssa_R_Dry_10um)
• Aerosol backwards-hemispheric light scattering coefficient, Humidograph
  nephelometer red channel, 10(Bbs_R_Wet_10um_Neph3W_2)
• Aerosol total light scattering coefficient, Humidograph nephelometer blue
  channel, 10 um particle di(Bs_B_Wet_10um_Neph3W_2)
• Asymmetry factor, blue wavelength, 10um size cut(asymmetry_parameter_B_Dry_10um)
• Angstrom exponent computed from blue/green ratio, 1 um size cut, PSAP3W data(Ba_angstrom_exponent_BG_Dry_1um)
• Total scattering coefficient, blue wavelength, low RH, 1 um size cut(Bs_B_Dry_1um_Neph3W_1)
• Wet_Dry_Ratio_Bs_R_1um_Neph3W
• Hemispheric backscatter fraction, blue wavelength, 1 um size cut(bsf_B_Dry_1um)
• Hemispheric backscatter fraction, green wavelength, 10 um size cut(bsf_G_Dry_10um)
• Wet_Dry_Ratio_Bbs_G_1um_Neph3W
• Aerosol forcing per unit optical depth, 10 um size cut(aerosol_forcing_efficiency_10um)
• Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_G_Dry_1um_PSAP3W_1)
• usf_R_Dry_10um
• RH_NephVol_Dry
• Wet_Dry_Ratio_Bbs_R_10um_Neph3W
• 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 green
  channel, 10 um particle d(Bs_G_Wet_10um_Neph3W_2)
• Angstrom exponent computed from blue/green ratio, 1 um size cut, Neph3W total
  scatter data(Bs_angstrom_exponent_BG_Dry_1um)
• Aerosol forcing per unit optical depth, 1 um size cut(aerosol_forcing_efficiency_1um)
• Aerosol backwards-hemispheric light scattering coefficient, reference
  nephelometer red channel, 10 um particle diameter(Bbs_R_Dry_10um_Neph3W_1)
• usf_G_Dry_1um
• Aerosol total light scattering coefficient, Ref. Humidograph nephelometer green
  channel, 1 um particle diameter(Bs_G_Dry_1um_Neph3W_1)
• Wet_Dry_Ratio_Bs_G_1um_Neph3W
• Aerosol total light scattering coefficient, reference nephelometer blue channel,
  1 um particle diameter(Bs_B_Wet_1um_Neph3W_2)
• usf_G_Dry_10um
• Hemispheric backscatter fraction, blue wavelength, 10 um size cut(bsf_B_Dry_10um)
• Angstrom exponent computed from green/red ratio, 1 um size cut, Neph3W
  backscatter data(Bbs_angstrom_exponent_GR_Dry_1um)
• T_NephVol_Wet
• Absorption coefficient, green wavelength, low RH, 10 um size cut(Ba_G_Dry_10um_PSAP1W_1)
• usf_R_Dry_1um
• Aerosol backwards-hemispheric light scattering coefficient, Humidograph
  nephelometer red channel, 1(Bbs_R_Wet_1um_Neph3W_2)
• Single scattering albedo, blue wavelength, low RH, 10 um size cut(ssa_B_Dry_10um)
• Hemispheric backscatter fraction, green wavelength, 1 um size cut(bsf_G_Dry_1um)
• Hemispheric backscatter_fraction, red wavelength, 1 um size cut(bsf_R_Dry_1um)
• Back-scattering coefficient, blue wavelength, low RH, 1 um size cut(Bbs_B_Dry_1um_Neph3W_1)
• Wet_Dry_Ratio_Bs_G_10um_Neph3W
• Asymmetry factor, green wavelength, 10um size cut(asymmetry_parameter_G_Dry_10um)
• Angstrom exponent computed from blue/red ratio, 10 um size cut, Neph3W
  backscatter data(Bbs_angstrom_exponent_BR_Dry_10um)
• Aerosol total light scattering coefficient, reference nephelometer blue channel,
  10 um particle diam(Bs_B_Dry_10um_Neph3W_1)
• East longitude(lon)
• Absorption coefficient blue, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_B_Dry_1um_PSAP3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, reference
  nephelometer green channel, 10(Bbs_G_Dry_10um_Neph3W_1)
• calculated_RH_NephVol_Wet
• Angstrom exponent computed from blue/red ratio, 10 um size cut, Neph3W total
  scatter data(Bs_angstrom_exponent_BR_Dry_10um)
• Asymmetry factor, red wavelength, 10um size cut(asymmetry_parameter_R_Dry_10um)
• Hemispheric backscatter fraction, red wavelength, 10 um size cut(bsf_R_Dry_10um)
• Absorption coefficient blue, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_B_Dry_10um_PSAP3W_1)
• Wet_Dry_Ratio_Bbs_B_10um_Neph3W
• base_time
• usf_B_Dry_10um
• Angstrom exponent computed from blue/green ratio, 10 um size cut, Neph3W total
  scatter data(Bs_angstrom_exponent_BG_Dry_10um)
• Angstrom exponent computed from blue/red ratio, 1 um size cut, Neph3W total
  scatter data(Bs_angstrom_exponent_BR_Dry_1um)
• Altitude above mean sea level(alt)
• Aerosol backwards-hemispheric light scattering coefficient, reference
  nephelometer blue channel, 1 um particle diameter(Bbs_B_Wet_1um_Neph3W_2)
• Absorption coefficient, green wavelength, 3 wavelength PSAP, low RH, 10 um size
  cut(Ba_G_Dry_10um_PSAP3W_1)
• Angstrom exponent computed from blue/red ratio, 10 um size cut, PSAP3W data(Ba_angstrom_exponent_BR_Dry_10um)
• Aerosol backwards-hemispheric light scattering coefficient, reference
  nephelometer red channel, 1 um particle diameter(Bbs_R_Dry_1um_Neph3W_1)
• RH_postHG
• Angstrom exponent computed from green/red ratio, 1 um size cut, Neph3W total
  scatter data(Bs_angstrom_exponent_GR_Dry_1um)
• Single scattering albedo, blue wavelength, low RH, 1 um size cut(ssa_B_Dry_1um)
• Aerosol total light scattering coefficient, Humidograph nephelometer red
  channel, 1 um particle diam(Bs_R_Wet_1um_Neph3W_2)
• Asymmetry factor, green wavelength, 1um size cut(asymmetry_parameter_G_Dry_1um)
• Aerosol backwards-hemispheric light scattering coefficient, Humidograph
  nephelometer green channel,(Bbs_G_Wet_1um_Neph3W_2)
• usf_B_Dry_1um
• Angstrom exponent computed from blue/red ratio, 1 um size cut, PSAP3W data(Ba_angstrom_exponent_BR_Dry_1um)
• Aerosol total light scattering coefficient, reference nephelometer green
  channel, 1 um particle diameter(Bs_G_Wet_1um_Neph3W_2)
• Wet_Dry_Ratio_Bs_B_10um_Neph3W
• Angstrom exponent computed from blue/red ratio, 1 um size cut, Neph3W
  backscatter data(Bbs_angstrom_exponent_BR_Dry_1um)
• Aerosol backwards-hemispheric light scattering coefficient, Humidograph
  nephelometer green channel,(Bbs_G_Wet_10um_Neph3W_2)
• time_offset
• Asymmetry factor, red wavelength, 1um size cut(asymmetry_parameter_R_Dry_1um)
• Angstrom exponent computed from green/red ratio, 1 um size cut, PSAP3W data(Ba_angstrom_exponent_GR_Dry_1um)
• Absorption coefficient, green wavelength, low RH, 1 um size cut(Ba_G_Dry_1um_PSAP1W_1)
• time
• Single scattering albedo, green wavelength, low RH, 1 um size cut(ssa_G_Dry_1um)
• Absorption coefficient red, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_R_Dry_1um_PSAP3W_1)
• Wet_Dry_Ratio_Bs_B_1um_Neph3W
• Angstrom exponent computed from green/red ratio, 10 um size cut, Neph3W total
  scatter data(Bs_angstrom_exponent_GR_Dry_10um)
• Aerosol total light scattering coefficient, reference nephelometer green
  channel, 10 um particle diameter(Bs_G_Dry_10um_Neph3W_1)
• Absorption coefficient red, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_R_Dry_10um_PSAP3W_1)
• Single scattering albedo, red wavelength, low RH, 1 um size cut(ssa_R_Dry_1um)
• North latitude(lat)
• Angstrom exponent computed from green/red ratio, 10 um size cut, Neph3W
  backscatter data(Bbs_angstrom_exponent_GR_Dry_10um)
• Angstrom exponent computed from blue/green ratio, 10 um size cut, Neph3W
  backscatter data(Bbs_angstrom_exponent_BG_Dry_10um)
• Single scattering albedo, green wavelength, low RH, 10 um size cut(ssa_G_Dry_10um)
• Wet_Dry_Ratio_Bbs_G_10um_Neph3W
• Aerosol total light scattering coefficient, reference nephelometer red channel,
  10 um particle diameter(Bs_R_Wet_10um_Neph3W_2)
• T_postHG
• Wet_Dry_Ratio_Bs_R_10um_Neph3W
• Asymmetry factor, blue wavelength, 1um size cut(asymmetry_parameter_B_Dry_1um)