ENA/AOS/C1 - AOS Instrument Repair, Calibration and Modification: Mentor Site Visit

There was visit of 7 AOS instrument mentors to the ENA AOS during this period of 
instrument repair, calibration and modification. Instruments were occasionally off, or with no 
sample flow, or receiving calibration samples, etc. There was no productive sampling of 
ambient air during this period other than for testing. No data should be used for this period 
as ambient samples.

Note: Two datastream are missing. The CAPS Extinction Monitor and the Greenhouse gas 
instrument.

Do not use data

• Auxiliary measurement, not implemented(auxiliary)
• Current(current)
• Sheath flow(sheath_flow)
• Particle size distribution(size_distribution)
• Differential_voltage, see instrument manual(differential_voltage)
• Temperature used for calculation(temperature)
• Lower particle size limit for each bin(lower_size_limit)
• Scatter signal(scattering_voltage)
• Upper particle size limit for each bin(upper_size_limit)
• Unit temperature(unit_temperature)
• Bin number(bin_num)
• Purge flow(purge_flow)
• Reference(reference)
• Sample pressure(sample_pressure)
• Main flow rate(flow)
• Sample volume(sampling_volume)

• Aerosol concentration averaged over times to match N_CCN(concentration)
• Orifice pressure(orifice_pressure)
• Condensation temperature(condensation_temp)
• Cabinet temperature(cabinet_temp)
• Optics temperature(optics_temp)
• OPC laser current(laser_current)
• Saturation temperature(saturation_temp)
• Nozzle pressure(nozzle_pressure)
• Ambient Temperature(ambient_temp)

• AOS PSAP3W transmittance, green channel(transmittance_G)
• AOS PSAP3W mass flow, mV(mass_flow_voltage)
• AOS Ba_B_CLAP3W transmittance, blue channel(transmittance_B)
• AOS PSAP3W transmittance, red channel(TrR)
• AOS PSAP3W transmittance, blue channel, 1 um size cut(TrB_1um)
• Flow setpoint(dilution_flow_setpoint)
• AOS Ba_R_CLAP3W transmittance, red channel(transmittance_R)
• AOS PSAP3W flags(psap_flags)
• AOS PSAP3W transmittance, green channel(TrG)
• Diffusion flow valve position(dilution_flow_valve_position)
• AOS PSAP3W transmittance, blue channel(TrB)
• psap3w flow rate(psap_flow_rate)
• Dilution correction factor(dilution_correction_factor)
• AOS CLAP3W (NOAA) sample length, needed to calculate Beers Law, 1 um size cut(sample_length_1um)
• Averaging time interval(averaging_time)
• Dilution flow rate(dilution_flow)
• AOS PSAP3W transmittance, blue channel, 10 um size cut(TrB_10um)
• AOS Ba_B_CLAP3W_1 (NOAA) sample length, needed to calculate Beers Law(sample_length)
• Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_R_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)
• Impactor setting in terms of aerodynamic diameter cut off(impactor_setting)
• Aerosol light absorption coefficient, nominal green wavelength at dry or
  reference RH(Ba_G_PSAP3W)
• Absorption coefficient green, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_G_Dry_1um_PSAP3W_1)
• AOS CLAP3W transmittance, red channel, 10 um size cut(TrR_10um)
• AOS CLAP3W transmittance, red channel, 1 um size cut(TrR_1um)
• Aerosol light absorption coefficient, nominal blue wavelength at dry or
  reference RH(Ba_B_PSAP3W)
• Mass flow(mass_flow)
• Absorption coefficient, blue wavelength, 3 wavelength PSAP, low RH, 1 um size
  cut(Ba_B_Dry_1um_PSAP3W_1)
• AOS CLAP3W (NOAA) sample length, needed to calculate Beers Law, 10 um size cut(sample_length_10um)
• Absorption coefficient, blue wavelength, 3 wavelength PSAP, low RH, 10 um size
  cut(Ba_B_Dry_10um_PSAP3W_1)
• AOS CLAP3W transmittance, green channel, 10 um size cut(TrG_10um)
• Aerosol light absorption coefficient, nominal red wavelength at dry or reference
  RH(Ba_R_PSAP3W)
• Absorption coefficient, green wavelength, 3 wavelength PSAP, low RH, 10 um size
  cut(Ba_G_Dry_10um_PSAP3W_1)
• AOS CLAP3W transmittance, green channel, 1 um size cut(TrG_1um)

• Dilution flow rate(dilution_flow)
• Impactor setting in terms of aerodynamic diameter cut off(impactor_setting)
• Flow setpoint(dilution_flow_setpoint)
• Aerosol light absorption coefficient, nominal red wavelength at dry or reference
  RH(Ba_R_PSAP3W)
• AOS Ba_B_CLAP3W transmittance, blue channel(transmittance_B)
• Aerosol light absorption coefficient, nominal blue wavelength at dry or
  reference RH(Ba_B_PSAP3W)
• AOS PSAP3W transmittance, green channel(transmittance_G)
• Diffusion flow valve position(dilution_flow_valve_position)
• AOS Ba_R_CLAP3W transmittance, red channel(transmittance_R)
• Aerosol light absorption coefficient, nominal green wavelength at dry or
  reference RH(Ba_G_PSAP3W)
• Mass flow(mass_flow)

• Supply voltage(supply_volts)
• Ambient air temperature(T_Ambient)
• Rain amount(rain_amount)
• Pressure of ambient air(P_Ambient)
• Heater voltage(heater_volts)
• Reference voltage(ref_volts)
• Rain duration(rain_duration)
• Wind Direction, relative to true North(WindDirection)
• Heater temperature(heater_temp)
• Wind speed(WindSpeed)
• Rain intensity(rain_intensity)
• Ambient air relative humidity(RH_Ambient)

• Ozone concentration(ozone)
• Ozone bench temperature(ozone_bench_temp)
• Ozone pressure(ozone_pressure)

• Impactor state in terms of aerodynamic diameter cut off(impactor_state)

• Standard deviation of CCN temperature gradient (CCN_t_read_TEC3 -
  CCN_t_read_TEC1)(CCN_temperature_std)
• Bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)
• AOS CCN observed temperature at middle of column(CCN_t_read_TEC2)
• AOS CCN observed temperature at top of column(CCN_t_read_TEC1)
• AOS CCN (read) temperature at bottom of column(CCN_t_read_TEC3)
• AOS CCN number concentration by bin(N_CCN_dN)
• First stage monitor voltage(CCN_first_stage_monitor_voltage)
• AOS CCN volumetric flowrate of sheath air(CCN_Q_sheath)
• CCN Proportional valve voltage(CCN_proportional_valve_voltage)
• Temperature difference between CCN_t_set_TEC3 and CCN_t_set_TEC1(CCN_temperature_gradient)
• AOS CCN OPC laser current(CCN_laser_current)
• AOS CCN temperature of the optical particle counter(CCN_T_OPC)
• AOS CCN logical value, indicating whether the instrument has reached thermal
  gradient stabilization and is within 0.4 degrees C of the set point(CCN_temp_unstable_flag)
• AOS CCN super saturation (calculated)(CCN_super_saturation_calculated)
• AOS CCN sample saturation setpoint value reported by instrument(CCN_ss_set)
• Cloud condensation nuclei number density(N_CCN)
• AOS CCN volumetric flowrate of sample air(CCN_Q_sample)
• AOS CCN temperature of the nafion humidifier(CCN_T_nafion)
• AOS CCN temperature of sample air at entrance to instrument(CCN_T_inlet)
• AOS CCN sample pressure(CCN_P_sample)
• AOS CCN temperature of sample air entering the column(CCN_T_sample)

• Aerosol total light scattering coefficient, nominal blue wavelength at ramped RH(Bs_B_Wet_Neph3W)
• Sample temperature inside humidified nephelometer(T_Neph_Wet)
• Aerosol total light scattering coefficient, nominal red wavelength at ramped RH(Bs_R_Wet_Neph3W)
• Aerosol total light scattering coefficient, nominal green wavelength at ramped
  RH(Bs_G_Wet_Neph3W)
• Aerosol back-hemispheric light scattering coefficient, nominal green wavelength
  at ramped RH(Bbs_G_Wet_Neph3W)
• Aerosol back-hemispheric light scattering coefficient, nominal red wavelength at
  ramped RH(Bbs_R_Wet_Neph3W)
• Pressure inside humidified nephelometer(P_Neph_Wet)
• Temperature, reference nephelometer inlet(T_Neph_Inlet_Wet)
• Aerosol back-hemispheric light scattering coefficient, nominal blue wavelength
  at ramped RH(Bbs_B_Wet_Neph3W)
• Relative humidity, Humidograph nephelometer(RH_Neph_Wet)

• Aerosol total light scattering coefficient, nominal red wavelength at dry or
  reference RH(Bs_R_Dry_Neph3W_1)
• Aerosol total light scattering coefficient, nominal blue wavelength at dry or
  reference RH(Bs_B_Dry_Neph3W_1)
• Relative humidity, reference nephelometer(RH_Neph_Dry)
• Pressure inside reference nephelometer(P_Neph_Dry)
• Impactor setting in terms of aerodynamic diameter cut off(impactor_setting)
• Aerosol total light scattering coefficient, nominal green wavelength at dry or
  reference RH(Bs_G_Dry_Neph3W_1)
• Temperature, reference nephelometer inlet(T_Neph_Inlet_Dry)
• Sample temperature inside reference nephelometer(T_Neph_Dry)
• Aerosol back-hemispheric light scattering coefficient, nominal blue wavelength
  at dry or reference RH(Bbs_B_Dry_Neph3W_1)
• Aerosol back-hemispheric light scattering coefficient, nominal red wavelength at
  dry or reference RH(Bbs_R_Dry_Neph3W_1)
• Aerosol back-hemispheric light scattering coefficient, nominal green wavelength
  at dry or reference RH(Bbs_G_Dry_Neph3W_1)

• Relative humidity, inside reference nephelometer(RH_Neph_Vol_Wet)
• Impactor setting in terms of aerodynamic diameter cut off(impactor_setting)
• Aerosol back-hemispheric light scattering coefficient, nominal red wavelength at
  ramped RH(Bbs_R_Wet_Neph3W_2)
• Relative humidity at humidified nephelometer inlet(RH_Neph_Inlet_Wet)
• Temperature, reference nephelometer inlet(T_Neph_Inlet_Wet)
• Aerosol total light scattering coefficient, nominal green wavelength at ramped
  RH(Bs_G_Wet_Neph3W_2)
• Aerosol back-emispheric light scattering coefficient, nominal green wavelength
  at ramped RH(Bbs_G_Wet_Neph3W_2)
• Pressure inside humidified nephelometer(P_Neph_Wet)
• Aerosol back-hemispheric light scattering coefficient, nominal blue wavelength
  at ramped RH(Bbs_B_Wet_Neph3W_2)
• Aerosol total light scattering coefficient, nominal blue wavelength at ramped RH(Bs_B_Wet_Neph3W_2)
• Temperature, inside nephelometer(T_Neph_Vol_Wet)
• Aerosol total light scattering coefficient, nominal red wavelength at ramped RH(Bs_R_Wet_Neph3W_2)

• Mass concentration of chloride, ambient aerosol in air.(chloride)
• Mass concentration of sulfate, ambient aerosol in air.(sulfate)
• Mass concentration of ammonium, ambient aerosol in air(ammonium)
• Mass concentration of nitrate, ambient aerosol in air(nitrate)
• Mass concentration of total organics, ambient aerosol in air(total_organics)

• Ambient temperature of instrument(ambient_temperature)
• Carbon monoxide (CO) mixing ratio corrected for water vapor concentration and
  calculated with nominal sensitivity correction(co_dry)
• Nitrous oxide (N2O) mixing ratio calculated with nominal sensitivity correction(n2o)
• Nitrous oxide (N2O) mixing ratio corrected for water vapor concentration and
  calculated with nominal sensitivity correction(n2o_dry)
• Cell sample temperature(gas_temperature)
• Cell sample pressure(gas_pressure)
• Measured water content(h2o)
• Carbon monoxide concentration(co)

• Bin center value(bin_center)
• Sample flow rate(sample_flow)
• Number of bins stored in data block(num_bins)
• Atomizer calibration status(atomizer)
• Humid aerosol particle relative humidity(humid_rh)
• Dry aerosol diameter size instrument setting(dry_diameter_setting)
• Bin width(bin_width)
• Bin numbers for sweep measurements(bin)
• Sampling mode scan type(scan_type)
• Maximum aerosol particle diameter instrument setting(scan_max_diameter_setting)
• Humidified DMA scanning time instrument setting(scan_time_setting)
• Total scan concentration over all bins(total_concentration)
• Dry aerosol particle relative humidity instrument setting(dry_rh_setting)
• Concentration of aerosol(aerosol_concentration)
• Minimum aerosol particle diameter instrument setting(scan_min_diameter_setting)