netcdf epcaosaeth2spot1sM1.b1.20240103.000000 { dimensions: time = UNLIMITED ; // (1080 currently) wavelength = 7 ; variables: int base_time ; base_time:string = "2024-01-03 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 2024-01-03 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 2024-01-03 00:00:00 0:00" ; time:standard_name = "time" ; float wavelength(wavelength) ; wavelength:long_name = "Wavelength of aethelometer optical filter" ; wavelength:units = "nm" ; float Babs(time, wavelength) ; Babs:long_name = "Absorption Coefficient" ; Babs:units = "1/Mm" ; Babs:missing_value = -9999.f ; Babs:mass_attenuation_coefficient = 18.47f, 14.54f, 13.14f, 11.58f, 10.35f, 7.77f, 7.19f ; Babs:equation = "(mass_attenuation_coefficient * equivalent_black_carbon * 1E-9) * 1E+6" ; Babs:comment = "Computed using 60 second rolling average of equivalent_black_carbon." ; Babs:standard_name = "volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles" ; Babs:ancillary_variables = "qc_Babs" ; int qc_Babs(time, wavelength) ; qc_Babs:long_name = "Quality check results on variable: Absorption Coefficient" ; qc_Babs:units = "1" ; qc_Babs:standard_name = "quality_flag" ; qc_Babs:description = "This variable 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_Babs:before_impactor_change_alarm = "30" ; qc_Babs:after_impactor_change_alarm = "60" ; qc_Babs:flag_method = "bit" ; qc_Babs:bit_1_description = "Value is equal to missing_value" ; qc_Babs:bit_1_assessment = "Bad" ; qc_Babs:bit_2_description = "Indeterminate values used in computation" ; qc_Babs:bit_2_assessment = "Indeterminate" ; qc_Babs:bit_3_description = "< before_impactor_change_alarm seconds before an impactor transition" ; qc_Babs:bit_3_assessment = "Bad" ; qc_Babs:bit_4_description = "< after_impactor_change_alarm seconds after an impactor transition" ; qc_Babs:bit_4_assessment = "Bad" ; float equivalent_black_carbon(time, wavelength) ; equivalent_black_carbon:long_name = "Equivalent black carbon concentration corrected for loading factors" ; equivalent_black_carbon:units = "ng/m^3" ; equivalent_black_carbon:missing_value = -999999.f ; equivalent_black_carbon:comment = "Computed using a 60 second rolling average of only the good and indeterminate values from the input data." ; equivalent_black_carbon:standard_name = "mass_concentration_of_absorption_equivalent_black_carbon_of_dry_aerosol_particles_in_air" ; equivalent_black_carbon:ancillary_variables = "qc_equivalent_black_carbon" ; int qc_equivalent_black_carbon(time, wavelength) ; qc_equivalent_black_carbon:long_name = "Quality check results on variable: Equivalent black carbon concentration corrected for loading factors" ; qc_equivalent_black_carbon:units = "1" ; qc_equivalent_black_carbon:standard_name = "quality_flag" ; qc_equivalent_black_carbon:description = "This variable 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_equivalent_black_carbon:before_impactor_change_alarm = "30" ; qc_equivalent_black_carbon:after_impactor_change_alarm = "60" ; qc_equivalent_black_carbon:flag_method = "bit" ; qc_equivalent_black_carbon:bit_1_description = "Value is equal to missing_value" ; qc_equivalent_black_carbon:bit_1_assessment = "Bad" ; qc_equivalent_black_carbon:bit_2_description = "Indeterminate values used in computation and/or bad values were excluded" ; qc_equivalent_black_carbon:bit_2_assessment = "Indeterminate" ; qc_equivalent_black_carbon:bit_3_description = "< before_impactor_change_alarm seconds before an impactor transition" ; qc_equivalent_black_carbon:bit_3_assessment = "Bad" ; qc_equivalent_black_carbon:bit_4_description = "< after_impactor_change_alarm seconds after an impactor transition" ; qc_equivalent_black_carbon:bit_4_assessment = "Bad" ; int impactor_state(time) ; impactor_state:long_name = "Impactor state in terms of aerodynamic diameter cut off" ; impactor_state:units = "1" ; impactor_state:missing_value = -9999 ; impactor_state:flag_values = 0, 1, 10 ; impactor_state:flag_meanings = "transition_between_particle_size 1um 10um" ; 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 = "aosaeth2spot1m -s epc -f M1" ; :Conventions = "ARM-1.3" ; :process_version = "ingest-aosaeth2spot1m-1.0-0.el7" ; :dod_version = "aosaeth2spot1s-b1-3.0" ; :input_datastreams = "epcaosaeth2spotM1.b1 : 1.0 : 20240102.000000-20240103.000000" ; :site_id = "epc" ; :platform_id = "aosaeth2spot1s" ; :facility_id = "M1" ; :data_level = "b1" ; :location_description = "Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE), Scripps Pier, La Jolla, CA" ; :datastream = "epcaosaeth2spot1sM1.b1" ; :sampling_interval = "1 second" ; :configuration_file = "epcaosaeth2spot1sM1.20230101.000000.config" ; :doi = "10.5439/1991928" ; :history = "created by user dsmgr on machine prod-proc4.adc.arm.gov at 2024-01-03 05:34:01, using ingest-aosaeth2spot1m-1.0-0.el7" ; }