netcdf oliaoscpcfM1.b1.20210614.000000 { dimensions: time = UNLIMITED ; // (86400 currently) variables: int base_time ; base_time:string = "2021-06-14 00:00:00 0:00" ; base_time:long_name = "Base time in Epoch" ; base_time:units = "seconds since 1970-1-1 0:00:00 0:00" ; base_time:ancillary_variables = "time_offset" ; double time_offset(time) ; time_offset:long_name = "Time offset from base_time" ; time_offset:units = "seconds since 2021-06-14 00:00:00 0:00" ; time_offset:ancillary_variables = "base_time" ; double time(time) ; time:long_name = "Time offset from midnight" ; time:units = "seconds since 2021-06-14 00:00:00 0:00" ; time:standard_name = "time" ; float concentration(time) ; concentration:long_name = "Particle concentration" ; concentration:units = "1/cm^3" ; concentration:valid_min = 5.f ; concentration:valid_max = 50000.f ; concentration:missing_value = -9999.f ; concentration:corrections_applied = "dilution_correction flow_calibration" ; concentration:dilution_correction_definition = "The concentration field has been multiplied by the value of the dilution_correction_factor to account for active dilution of sample stream with filtered air" ; concentration:dilution_correction_details = "Dilution correction factor computed and applied when dilution valve is open, setpoint is > 100 sccm, and flow reading > 100. Else taken to be unity." ; concentration:flow_calibration_definition = "The concentration value has been multiplied by (1.0/(aerosol_flow_calibrated * 1.e-3))" ; concentration:ancillary_variables = "qc_concentration" ; int qc_concentration(time) ; qc_concentration:long_name = "Quality check results on field: Particle concentration" ; qc_concentration:units = "unitless" ; qc_concentration:description = "This field contains bit packed integer values, where each bit represents a QC test on the data. Non-zero bits indicate the QC condition given in the description for those bits; a value of 0 (no bits set) indicates the data has not failed any QC tests." ; qc_concentration:concentration_max_warning = 10000.f ; qc_concentration:nozzle_pressure_min_alarm = 1.f ; qc_concentration:nozzle_pressure_min_warning = 1.f ; qc_concentration:nozzle_pressure_max_warning = 6.f ; qc_concentration:nozzle_pressure_max_alarm = 6.f ; qc_concentration:orifice_pressure_min_warning = 10.f ; qc_concentration:orifice_pressure_max_warning = 90.f ; qc_concentration:orifice_pressure_min_alarm = 10.f ; qc_concentration:orifice_pressure_max_alarm = 90.f ; qc_concentration:sat_temp_min_alarm = 38.5f ; qc_concentration:sat_temp_max_alarm = 39.5f ; qc_concentration:cond_temp_min_alarm = 21.5f ; qc_concentration:cond_temp_max_alarm = 22.5f ; qc_concentration:optics_temp_min_alarm = 38.f ; qc_concentration:optics_temp_max_alarm = 42.f ; qc_concentration:fraction_full_min_alarm = 0.f ; qc_concentration:laser_current_min_alarm = 15.f ; qc_concentration:cabinet_temp_min_alarm = 5.f ; qc_concentration:cabinet_temp_max_alarm = 40.f ; qc_concentration:ambient_pressure_min_alarm = 80.f ; qc_concentration:ambient_pressure_max_alarm = 110.f ; qc_concentration:flag_method = "bit" ; qc_concentration:bit_1_description = "Value is equal to missing_value." ; qc_concentration:bit_1_assessment = "Bad" ; qc_concentration:bit_2_description = "Value is less than the valid_min." ; qc_concentration:bit_2_assessment = "Bad" ; qc_concentration:bit_3_description = "Value is greater than the valid_max." ; qc_concentration:bit_3_assessment = "Bad" ; qc_concentration:bit_4_description = "Value is greater than concentration_max_warning" ; qc_concentration:bit_4_assessment = "Indeterminate" ; qc_concentration:bit_5_description = "Not used" ; qc_concentration:bit_5_assessment = "Bad" ; qc_concentration:bit_6_description = "Not used" ; qc_concentration:bit_6_assessment = "Bad" ; qc_concentration:bit_7_description = "nozzle_pressure < nozzle_pressure_min_warning OR nozzle_pressure > nozzle_pressure_max_warning" ; qc_concentration:bit_7_assessment = "Indeterminate" ; qc_concentration:bit_8_description = "nozzle_pressure < nozzle_pressure_min_alarm OR nozzle_pressure > nozzle_pressure_max_alarm" ; qc_concentration:bit_8_assessment = "Bad" ; qc_concentration:bit_9_description = "orifice_pressure < orifice_pressure_min_warning OR orifice_pressure > orifice_pressure_max_warning" ; qc_concentration:bit_9_assessment = "Indeterminate" ; qc_concentration:bit_10_description = "orifice_pressure < orifice_pressure_min_alarm OR orifice_pressure > orifice_pressure_max_alarm" ; qc_concentration:bit_10_assessment = "Bad" ; qc_concentration:bit_11_description = "saturation_temp < sat_temp_min_alarm OR saturation_temp > sat_temp_max_alarm" ; qc_concentration:bit_11_assessment = "Bad" ; qc_concentration:bit_12_description = "condensation_temp < cond_temp_min_alarm OR condensation_temp > cond_temp_max_alarm" ; qc_concentration:bit_12_assessment = "Bad" ; qc_concentration:bit_13_description = "optics_temp < optics_temp_min_alarm OR optics_temp > optics_temp_max_alarm" ; qc_concentration:bit_13_assessment = "Bad" ; qc_concentration:bit_14_description = "fraction_full < fraction_full_min_alarm" ; qc_concentration:bit_14_assessment = "Indeterminate" ; qc_concentration:bit_15_description = "laser_current < laser_current_min_alarm" ; qc_concentration:bit_15_assessment = "Bad" ; qc_concentration:bit_16_description = "cabinet_temp < cabinet_temp_min_alarm OR cabinet_temp > cabinet_temp_max_alarm" ; qc_concentration:bit_16_assessment = "Bad" ; qc_concentration:bit_17_description = "ambient_pressure < ambient_pressure_min_alarm OR ambient_pressure > ambient_pressure_max_alarm" ; qc_concentration:bit_17_assessment = "Bad" ; float saturation_temp(time) ; saturation_temp:long_name = "Saturation temperature" ; saturation_temp:units = "degC" ; saturation_temp:missing_value = -9999.f ; float condensation_temp(time) ; condensation_temp:long_name = "Condensation temperature" ; condensation_temp:units = "degC" ; condensation_temp:missing_value = -9999.f ; float optics_temp(time) ; optics_temp:long_name = "Optics temperature" ; optics_temp:units = "degC" ; optics_temp:missing_value = -9999.f ; float cabinet_temp(time) ; cabinet_temp:long_name = "Cabinet temperature" ; cabinet_temp:units = "degC" ; cabinet_temp:missing_value = -9999.f ; float ambient_pressure(time) ; ambient_pressure:long_name = "Ambient pressure" ; ambient_pressure:units = "kPa" ; ambient_pressure:missing_value = -9999.f ; float orifice_pressure(time) ; orifice_pressure:long_name = "Orifice pressure" ; orifice_pressure:units = "kPa" ; orifice_pressure:missing_value = -9999.f ; float nozzle_pressure(time) ; nozzle_pressure:long_name = "Nozzle pressure" ; nozzle_pressure:units = "kPa" ; nozzle_pressure:missing_value = -9999.f ; float laser_current(time) ; laser_current:long_name = "Laser current" ; laser_current:units = "mA" ; laser_current:missing_value = -9999.f ; int liquid_level(time) ; liquid_level:long_name = "Liquid level" ; liquid_level:units = "unitless" ; liquid_level:missing_value = -9999 ; liquid_level:flag_values = 0, 1 ; liquid_level:flag_meanings = "not_full full" ; float fraction_full(time) ; fraction_full:long_name = "Liquid fraction available" ; fraction_full:units = "unitless" ; fraction_full:missing_value = -9999.f ; int dilution_valve_position(time) ; dilution_valve_position:long_name = "Dilution flow valve position" ; dilution_valve_position:units = "unitless" ; dilution_valve_position:missing_value = -9999 ; dilution_valve_position:flag_values = -1, 0, 1 ; dilution_valve_position:flag_meanings = "error closed open" ; float dilution_flow_setpoint(time) ; dilution_flow_setpoint:long_name = "Flow setpoint" ; dilution_flow_setpoint:units = "cm^3/min" ; dilution_flow_setpoint:flow_type = "mass flow" ; dilution_flow_setpoint:reference_conditions = "volume of mass flow at 0 deg C, 1013.25 hPa" ; dilution_flow_setpoint:missing_value = -9999.f ; float dilution_flow_reading(time) ; dilution_flow_reading:long_name = "Flow read" ; dilution_flow_reading:units = "cm^3/min" ; dilution_flow_reading:flow_type = "mass flow" ; dilution_flow_reading:reference_conditions = "volume of mass flow at 0 deg C, 1013.25 hPa" ; dilution_flow_reading:missing_value = -9999.f ; dilution_flow_reading:corrections_applied = "slope_intercept_calibration" ; dilution_flow_reading:slope_intercept_comment = "slope and intercept calibration to Gilibrator flow in sccm" ; float dilution_correction_factor(time) ; dilution_correction_factor:long_name = "Dilution correction factor" ; dilution_correction_factor:units = "unitless" ; dilution_correction_factor:missing_value = -9999.f ; dilution_correction_factor:aerosol_flow = 965.5f ; dilution_correction_factor:dilution_slope = -9999.f ; dilution_correction_factor:dilution_intercept = -9999.f ; dilution_correction_factor:computation_details = "computed as dcf = (aerosol_flow)/(aerosol_flow - dilution_flow) when dilution valve is open, dilution set point is > 100 sccm, and dilution flow > 100. Else taken to be unity." ; float aerosol_flow_calibrated ; aerosol_flow_calibrated:long_name = "Calibrated aerosol flow as supplied by mentor" ; aerosol_flow_calibrated:units = "cm^3/min" ; aerosol_flow_calibrated:flow_type = "volumetric" ; aerosol_flow_calibrated:reference_conditions = "ambient" ; aerosol_flow_calibrated:missing_value = -9999.f ; aerosol_flow_calibrated:corrections_applied = "single-point_calibration" ; aerosol_flow_calibrated:corrections_details = "single-point calibration of critical orifice to Gilibrator" ; float dilution_slope ; dilution_slope:long_name = "Dilution slope" ; dilution_slope:units = "unitless" ; dilution_slope:missing_value = -9999.f ; float dilution_intercept ; dilution_intercept:long_name = "Dilution intercept" ; dilution_intercept:units = "unitless" ; dilution_intercept:missing_value = -9999.f ; float lat ; lat:long_name = "North latitude" ; lat:units = "degree_N" ; lat:valid_min = -90.f ; lat:valid_max = 90.f ; lat:standard_name = "latitude" ; float lon ; lon:long_name = "East longitude" ; lon:units = "degree_E" ; lon:valid_min = -180.f ; lon:valid_max = 180.f ; lon:standard_name = "longitude" ; float alt ; alt:long_name = "Altitude above mean sea level" ; alt:units = "m" ; alt:standard_name = "altitude" ; // global attributes: :command_line = "aoscpcfcorr -s oli -f M1" ; :Conventions = "ARM-1.2" ; :process_version = "ingest-aoscpcfcorr-2.4-0.el7" ; :dod_version = "aoscpcf-b1-2.4" ; :site_id = "oli" ; :facility_id = "M1" ; :platform_id = "aoscpcf" ; :location_description = "North Slope of Alaska (NSA), Oliktok Point, Alaska" ; :datastream = "oliaoscpcfM1.b1" ; :data_level = "b1" ; :input_datastreams = "oliaoscpcfM1.a1 : 1.1 : 20210614.000000" ; :configuration_file = "oliaoscpcfM1.20180724.000000.config" ; :sampling_interval = "1 second" ; :averaging_interval = "N/A" ; :serial_number = "N/A" ; :CPC_Instrument_Description = "3772 Condensation Particle Counter, with dilution flow" ; :Instrument_Manufacturer = "TSI, Inc." ; :AOS_DAC_type = "D" ; :doi = "10.5439/1352536" ; :history = "created by user dsmgr on machine flint at 2021-06-14 02:20:00, using ingest-aoscpcfcorr-2.4-0.el7" ; }