AWR/AOS/M1 - Airport activity directly impacting AOS measurements

Local activity directly impacts AOS measurements when it coincides with wind direction 
from that direction. The Aerosol Measurement Science Group is aware of the issue and is 
working to develop algorithms to flag the data. The influence can be extreme or subtle 
depending on the wind, point source and measurement.

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• (Raw data stream - documentation not supported)

• Supply voltage(supply_volts)
• Pressure of ambient air(P_Ambient)
• Rain intensity(rain_intensity)
• lon(lon)
• Wind Direction, relative to true North(WindDirection)
• Rain amount(rain_amount)
• North Latitude(lat)
• -180.0 - +180.0(alt)
• Heater temperature(heater_temp)
• time_in_seconds_since_volume_start(time)
• base time in epoch(base_time)
• Heater voltage(heater_volts)
• Ambient air temperature(T_Ambient)
• Reference voltage(ref_volts)
• Time offset from base_time(time_offset)
• Ambient air relative humidity(RH_Ambient)
• Wind speed(WindSpeed)
• Rain duration(rain_duration)

• Sample temperature inside reference nephelometer(T_Neph_Dry)
• Aerosol back-hemispheric light scattering coefficient, nominal green wavelength
  at dry or reference RH(Bbs_G_Dry_Neph3W)
• Relative humidity, reference nephelometer(RH_Neph_Dry)
• Aerosol total light scattering coefficient, nominal green wavelength at dry or
  reference RH(Bs_G_Dry_Neph3W)
• Temperature, reference nephelometer inlet(T_Neph_Inlet_Dry)
• Aerosol total light scattering coefficient, nominal red wavelength at dry or
  reference RH(Bs_R_Dry_Neph3W)
• Lamp voltage(lamp_voltage)
• Aerosol back-hemispheric light scattering coefficient, nominal blue wavelength
  at dry or reference RH(Bbs_B_Dry_Neph3W)
• Pressure inside reference nephelometer(P_Neph_Dry)
• Instrument operating mode(mode_flag)
• North Latitude(lat)
• -180.0 - +180.0(alt)
• base time in epoch(base_time)
• lon(lon)
• Aerosol total light scattering coefficient, nominal blue wavelength at dry or
  reference RH(Bs_B_Dry_Neph3W)
• Time offset from base_time(time_offset)
• Aerosol back-hemispheric light scattering coefficient, nominal red wavelength at
  dry or reference RH(Bbs_R_Dry_Neph3W)
• Instrument state(instrument_state)
• time_in_seconds_since_volume_start(time)
• Lamp current(lamp_current)

• Aerosol back-hemispheric light scattering coefficient, nominal green wavelength
  at dry or reference RH(Bbs_G_Dry_Neph3W)
• -180.0 - +180.0(alt)
• Sample temperature inside reference nephelometer(T_Neph_Dry)
• Lamp voltage(lamp_voltage)
• North Latitude(lat)
• Aerosol total light scattering coefficient, nominal red wavelength at dry or
  reference RH(Bs_R_Dry_Neph3W)
• Quality check results on field: Relative humidity inside reference nephelometer(qc_RH_Neph_Dry)
• Quality check results on field: Temperature, reference nephelometer inlet(qc_T_Neph_Inlet_Dry)
• Quality check results on field: Aerosol total light scattering coefficient,
  nominal blue wavelength at dry or reference RH(qc_Bs_B_Dry_Neph3W)
• Relative humidity, reference nephelometer(RH_Neph_Dry)
• time_in_seconds_since_volume_start(time)
• Quality check results on field: Aerosol back-hemispheric light scattering
  coefficient, nominal green wavelength at dry or reference RH(qc_Bbs_G_Dry_Neph3W)
• base time in epoch(base_time)
• Correction to humidified nephelometer measurements to standard temperature and
  pressure(density_correction_factor)
• Quality check results on field: Aerosol back-hemispheric light scattering
  coefficient, nominal blue wavelength at dry or reference RH(qc_Bbs_B_Dry_Neph3W)
• Aerosol back-hemispheric light scattering coefficient, nominal blue wavelength
  at dry or reference RH(Bbs_B_Dry_Neph3W)
• lon(lon)
• Aerosol total light scattering coefficient, nominal blue wavelength at dry or
  reference RH(Bs_B_Dry_Neph3W)
• Quality check results on field: Impactor particle size cut(qc_impactor_state)
• Impactor state in terms of aerodynamic diameter cut off(impactor_state)
• Time offset from base_time(time_offset)
• Quality check results on field: Aerosol total light scattering coefficient,
  nominal green wavelength at dry or reference RH(qc_Bs_G_Dry_Neph3W)
• Quality check results on field: Aerosol total light scattering coefficient,
  nominal red wavelength at dry or reference RH(qc_Bs_R_Dry_Neph3W)
• Aerosol total light scattering coefficient, nominal green wavelength at dry or
  reference RH(Bs_G_Dry_Neph3W)
• Instrument state(instrument_state)
• Aerosol back-hemispheric light scattering coefficient, nominal red wavelength at
  dry or reference RH(Bbs_R_Dry_Neph3W)
• Lamp current(lamp_current)
• Quality check results on field: Sample temperature inside reference nephelometer(qc_T_Neph_Dry)
• Pressure inside reference nephelometer(P_Neph_Dry)
• seconds since last impactor transition(seconds_after_transition)
• Instrument operating mode(mode_flag)
• Quality check results on field: Aerosol back-hemispheric light scattering
  coefficient, nominal red wavelength at dry or reference RH(qc_Bbs_R_Dry_Neph3W)
• Quality check results on field: Pressure inside reference nephelometer(qc_P_Neph_Dry)
• Temperature, reference nephelometer inlet(T_Neph_Inlet_Dry)

• AOS CCN voltage used by DMT for OPC diagnostic purposes(CCN_baseline_monitor)
• AOS CCN temperature of sample air at entrance to instrument(CCN_T_inlet)
• Number of particles that are larger than 10um(CCN_overflow)
• AOS CCN sample saturation setpoint value reported by instrument(CCN_ss_set)
• Temperature difference between CCN_t_set_TEC3 and CCN_t_set_TEC1(CCN_temperature_gradient)
• AOS CCN sample supersaturation set point value reported by instrument(CCN_supersaturation_set_point)
• North Latitude(lat)
• -180.0 - +180.0(alt)
• AOS CCN super saturation (calculated)(CCN_super_saturation_calculated)
• AOS CCN (read) temperature at bottom of column(CCN_t_read_TEC3)
• 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 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 sample pressure(CCN_P_sample)
• Standard deviation of CCN temperature gradient (CCN_t_read_TEC3 -
  CCN_t_read_TEC1)(CCN_temperature_std)
• Size bins for CCN droplet count(size_bin)
• lon(lon)
• base time in epoch(base_time)
• AOS CCN set temperature for the Nafion humidifier(CCN_T_nafion_set)
• AOS CCN OPC laser current(CCN_laser_current)
• AOS CCN (read) temperature at bottom of column(CCN_T_read_TEC3)
• Time offset from base_time(time_offset)
• CCN alarm code expressed as a summation of powers of 2. 0 indicates no detected
  problem(CCN_alarm_code)
• AOS CCN temperature of the optical particle counter(CCN_T_OPC)
• Cloud condensation nuclei number density(N_CCN)
• AOS CCN volumetric flowrate of sheath air(CCN_Q_sheath)
• 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 set point temperature for the inlet manifold(CCN_T_inlet_set)
• time_in_seconds_since_volume_start(time)
• AOS CCN number concentration by bin(N_CCN_dN)
• Droplet bin bounds(size_bin_bounds)
• First stage monitor voltage(CCN_first_stage_monitor_voltage)
• CCN Proportional valve voltage(CCN_proportional_valve_voltage)
• AOS CCN set point for temperature at bottom of column(CCN_T_set_TEC3)
• AOS CCN temperature of sample air entering the column(CCN_T_sample)
• AOS CCN set point for temperature at top of column(CCN_T_set_TEC1)
• AOS CCN set point for temperature at middle of column(CCN_T_set_TEC2)
• AOS CCN volumetric flowrate of sample air(CCN_Q_sample)
• 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)
• AOS CCN temperature of the nafion humidifier(CCN_T_nafion)
• AOS CCN set point temperature for the optical particle counter (OPC)(CCN_OPC_set)
• Bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)

• Pressure inside reference nephelometer(P_Neph_Dry)
• seconds since last impactor transition(seconds_after_transition)
• P_10um_hourly_average minus P_1um_hourly_average(dP_10um_minus_1um)
• Quality check results on field: Impactor particle size cut(qc_impactor_state)
• Hourly average of P_Neph_Dry when impactor state reports as 10. When state is
  10, the sample being measured is 10 um or smaller.(P_10um_hourly_average)
• Relative humidity at the impactor inlet(impactor_inlet_RH)
• -180.0 - +180.0(alt)
• North Latitude(lat)
• base time in epoch(base_time)
• lon(lon)
• time_in_seconds_since_volume_start(time)
• Time offset from base_time(time_offset)
• Hourly average of P_Neph_Dry when impactor state reports as 1. When state is 1,
  the sample being measured is 1 um or smaller.(P_1um_hourly_average)
• Impactor state in terms of aerodynamic diameter cut off(impactor_state)

• North Latitude(lat)
• -180.0 - +180.0(alt)
• Impactor state in terms of aerodynamic diameter cut off(impactor_state)
• time_in_seconds_since_volume_start(time)
• base time in epoch(base_time)
• lon(lon)
• Time offset from base_time(time_offset)

• Total scan concentration over all bins(total_concentration)
• Concentration of aerosol(aerosol_concentration)
• -180.0 - +180.0(alt)
• North Latitude(lat)
• Dry aerosol diameter size instrument setting(dry_diameter_setting)
• Sample flow rate(sample_flow)
• base time in epoch(base_time)
• time_in_seconds_since_volume_start(time)
• Sampling mode scan type(scan_type)
• Humid aerosol particle relative humidity(humid_rh)
• Minimum aerosol particle diameter instrument setting(scan_min_diameter_setting)
• Dry aerosol particle relative humidity instrument setting(dry_rh_setting)
• Time offset from base_time(time_offset)
• Atomizer calibration status(atomizer)
• Number of bins stored in data block(num_bins)
• Maximum aerosol particle diameter instrument setting(scan_max_diameter_setting)
• Bin center value(bin_center)
• Bin width(bin_width)
• Bin numbers for sweep measurements(bin)
• Humidified DMA scanning time instrument setting(scan_time_setting)
• lon(lon)

• Time offset from base_time(time_offset)
• Ozone pressure(ozone_pressure)
• Ozone concentration(ozone)
• base time in epoch(base_time)
• time_in_seconds_since_volume_start(time)
• lon(lon)
• North Latitude(lat)
• -180.0 - +180.0(alt)
• Ozone bench temperature(ozone_bench_temp)

• Size bins for CCN droplet count(size_bin)
• time_in_seconds_since_volume_start(time)
• T_OPC - T_read_TEC3 temperature difference(dT_OPC)
• AOS CCN number concentration by bin(N_CCN_dN)
• Estimated target thermal gradient under current operating conditions(dT_target_estimated)
• Reported temperature difference between T_set_TEC3 and T_set_TEC1(reported_temperature_gradient)
• Cloud condensation nuclei number density(N_CCN)
• Time offset from base_time(time_offset)
• CCN Proportional valve voltage(proportional_valve_voltage)
• lon(lon)
• Temperature read of sample air at entrance to instrument(T_inlet)
• Bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)
• Temperature read of the optical particle counter(T_OPC)
• Standard deviation of (T_read_TEC3 - T_read_TEC1)(temperature_std)
• Temperature set point at middle of column(T_set_TEC2)
• Temperature set point at top of column(T_set_TEC1)
• Volumetric flow rate of sheath air(Q_sheath)
• Sample pressure(P_sample)
• base time in epoch(base_time)
• Temperature read at bottom of column(T_read_TEC3)
• Number of particles that are larger than 10um(overflow)
• Temperature read at top of column(T_read_TEC1)
• Temperature read at middle of column(T_read_TEC2)
• Temperature difference between T_set_TEC3 and T_set_TEC1(T_set_gradient)
• OPC laser current(laser_current)
• Quality check results on field: Mean number concentration of N_CCN(qc_N_CCN)
• seconds since last impactor transition(seconds_after_transition)
• Logical value, indicating whether the instrument has reached thermal gradient
  stabilization and is within 0.4 degrees C of the set point(temp_unstable)
• Temperature set point at bottom of column(T_set_TEC3)
• Sample supersaturation set point value reported by instrument(supersaturation_set_point)
• First stage monitor voltage(first_stage_monitor_voltage)
• Droplet bin bounds(size_bin_bounds)
• Nafion temperature(T_nafion)
• Eta factor used in calculation of supersaturation_calculated(eta)
• Temperature read of sample air entering the column(T_sample)
• Temperature difference between T_read_TEC3 and T_read_TEC1(T_read_gradient)
• Sample supersaturation calculated via Lance/Rose method(supersaturation_calculated)
• Target supersaturation calculated via Lance/Rose method, computed from
  eta_target(supersaturation_calculated_target)
• Eta factor used in calculation of
  supersaturation_calculated_estimated_equilibrium_target(eta_target)
• North Latitude(lat)
• -180.0 - +180.0(alt)
• Volumetric flow rate of sample air(Q_sample)
• Lookup table for eta computation(eta_lookup_table)

• lon(lon)
• Aerosol back-hemispheric light scattering coefficient, nominal blue wavelength
  at ramped RH(Bbs_B_Wet_Neph3W)
• time_in_seconds_since_volume_start(time)
• North Latitude(lat)
• -180.0 - +180.0(alt)
• Sample temperature inside humidified nephelometer(T_Neph_Wet)
• Aerosol back-hemispheric light scattering coefficient, nominal red wavelength at
  ramped RH(Bbs_R_Wet_Neph3W)
• Pressure inside humidified nephelometer(P_Neph_Wet)
• Aerosol back-hemispheric light scattering coefficient, nominal green wavelength
  at ramped RH(Bbs_G_Wet_Neph3W)
• Relative humidity, Humidograph nephelometer(RH_Neph_Wet)
• Aerosol total light scattering coefficient, nominal blue wavelength at ramped RH(Bs_B_Wet_Neph3W)
• base time in epoch(base_time)
• Time offset from base_time(time_offset)
• Temperature, reference nephelometer inlet(T_Neph_Inlet_Wet)
• Aerosol total light scattering coefficient, nominal green wavelength at ramped
  RH(Bs_G_Wet_Neph3W)
• Instrument operating mode(mode_flag)
• Aerosol total light scattering coefficient, nominal red wavelength at ramped RH(Bs_R_Wet_Neph3W)

• (Raw data stream - documentation not supported)

• (Raw data stream - documentation not supported)

• Condensation temperature(condensation_temp)
• Dilution flow valve position(dilution_valve_position)
• time_in_seconds_since_volume_start(time)
• North Latitude(lat)
• -180.0 - +180.0(alt)
• Liquid fraction available(fraction_full)
• Aerosol concentration averaged over times to match N_CCN(concentration)
• Liquid level(liquid_level)
• Nozzle pressure(nozzle_pressure)
• lon(lon)
• Cabinet temperature(cabinet_temp)
• Orifice pressure(orifice_pressure)
• Flow setpoint(dilution_flow_setpoint)
• Time offset from base_time(time_offset)
• base time in epoch(base_time)
• OPC laser current(laser_current)
• Optics temperature(optics_temp)
• Saturation temperature(saturation_temp)
• Ambient pressure(ambient_pressure)
• Flow read(dilution_flow_reading)

• Liquid fraction available(fraction_full)
• Flow read(dilution_flow_reading)
• Ambient pressure(ambient_pressure)
• Aerosol concentration averaged over times to match N_CCN(concentration)
• Nozzle pressure(nozzle_pressure)
• time_in_seconds_since_volume_start(time)
• Dilution slope(dilution_slope)
• Quality check results on field: Particle concentration(qc_concentration)
• Liquid level(liquid_level)
• Flow setpoint(dilution_flow_setpoint)
• Optics temperature(optics_temp)
• Cabinet temperature(cabinet_temp)
• Time offset from base_time(time_offset)
• -180.0 - +180.0(alt)
• Dilution flow valve position(dilution_valve_position)
• North Latitude(lat)
• Saturation temperature(saturation_temp)
• lon(lon)
• base time in epoch(base_time)
• OPC laser current(laser_current)
• Orifice pressure(orifice_pressure)
• Condensation temperature(condensation_temp)
• Calibrated aerosol flow as supplied by mentor(aerosol_flow_calibrated)
• Dilution correction factor(dilution_correction_factor)
• Dilution intercept(dilution_intercept)

• Green reference sum(green_reference_sum)
• Blue overflow count(blue_overflow_count)
• Dark signal sum(dark_signal_sum)
• Reported flags(flags)
• Red sample count(red_sample_count)
• Red signal sum(red_signal_sum)
• Blue signal sum(blue_signal_sum)
• Dark reference sum(dark_reference_sum)
• Red overflow count(red_overflow_count)
• Green signal sum(green_signal_sum)
• Mass flow output(mass_flow_output)
• Green overflow count(green_overflow_count)
• lon(lon)
• Blue reference sum(blue_reference_sum)
• base time in epoch(base_time)
• Red reference sum(red_reference_sum)
• Dark sample count(dark_sample_count)
• North Latitude(lat)
• -180.0 - +180.0(alt)
• Dark overflow count(dark_overflow_count)
• Time offset from base_time(time_offset)
• Mass flow(mass_flow)
• time_in_seconds_since_volume_start(time)
• Green sample count(green_sample_count)
• Blue sample count(blue_sample_count)

• (Raw data stream - documentation not supported)

• (Raw data stream - documentation not supported)

• (Raw data stream - documentation not supported)

• (Raw data stream - documentation not supported)

• (Raw data stream - documentation not supported)

• (Raw data stream - documentation not supported)

• North Latitude(lat)
• Mass flow(mass_flow)
• Aerosol light absorption coefficient, nominal blue wavelength at dry or
  reference RH(Ba_B_PSAP3W)
• Aerosol light absorption coefficient, nominal red wavelength at dry or reference
  RH(Ba_R_PSAP3W)
• Dilution flow rate(dilution_flow)
• -180.0 - +180.0(alt)
• time_in_seconds_since_volume_start(time)
• Time offset from base_time(time_offset)
• lon(lon)
• Diffusion flow valve position(dilution_flow_valve_position)
• Flow setpoint(dilution_flow_setpoint)
• base time in epoch(base_time)
• AOS Ba_R_CLAP3W transmittance, red channel(transmittance_R)
• Aerosol light absorption coefficient, nominal green wavelength at dry or
  reference RH(Ba_G_PSAP3W)
• AOS Ba_B_CLAP3W transmittance, blue channel(transmittance_B)
• AOS PSAP3W transmittance, green channel(transmittance_G)

• Instrument flow rate(sample_flow_rate)
• Filter state(filter_unstable)
• time_in_seconds_since_volume_start(time)
• PSAP3W front panel transmittance relative to new filter, red channel(tr_red)
• Spot size area(spot_size_area)
• Transmittance, green channel(transmittance_green)
• Dilution correction factor(dilution_correction_factor)
• Impactor state in terms of aerodynamic diameter cut off(impactor_state)
• Transmittance, red channel(transmittance_red)
• Transmittance, green channel, not normalized(transmittance_green_raw)
• Dilution flow rate(dilution_flow)
• Transmittance, red channel, not normalized(transmittance_red_raw)
• base time in epoch(base_time)
• Time offset from base_time(time_offset)
• Quality check results on field: Transmittance, green channel(qc_transmittance_green)
• Flow setpoint(dilution_flow_setpoint)
• Normalization factor for red transmittance, resets with each filter change(transmittance_red_normalization_factor)
• Quality check results on field: Transmittance, red channel(qc_transmittance_red)
• Quality check results on field: Transmittance, blue channel(qc_transmittance_blue)
• Transmittance, blue channel, not normalized(transmittance_blue_raw)
• PSAP3W front panel transmittance relative to new filter, green channel(tr_green)
• Normalization factor for green transmittance, resets with each filter change(transmittance_green_normalization_factor)
• -180.0 - +180.0(alt)
• North Latitude(lat)
• Normalization factor for blue transmittance, resets with each filter change(transmittance_blue_normalization_factor)
• lon(lon)
• Light absorbance, red channel(absorbance_red)
• Transmittance, blue channel(transmittance_blue)
• seconds since last impactor transition(seconds_after_transition)
• Quality check results on field: AOS PSAP3W mass flow corrected for dilution(qc_sample_flow_rate)
• Light absorbance, blue channel(absorbance_blue)
• Quality check results on field: Impactor particle size cut(qc_impactor_state)
• Diffusion flow valve position(dilution_flow_valve_position)
• PSAP3W front panel transmittance relative to new filter, blue channel(tr_blue)
• Light absorbance, green channel(absorbance_green)