netcdf coracsmcdceM1.c2.20190501.001635 { dimensions: time = UNLIMITED ; // (27 currently) bound = 2 ; variables: int base_time ; base_time:string = "2019-05-01 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 2019-05-01 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 2019-05-01 00:00:00 0:00" ; time:bounds = "time_bounds" ; time:standard_name = "time" ; double time_bounds(time, bound) ; time_bounds:long_name = "Time cell bounds" ; time_bounds:bound_offsets = -1680., 0. ; float total_organics_CDCE(time) ; total_organics_CDCE:long_name = "Mass concentration of total organics corrected for the CDCE, ambient aerosol in air" ; total_organics_CDCE:units = "ug/m^3" ; total_organics_CDCE:missing_value = -9999.f ; total_organics_CDCE:ancillary_variables = "qc_total_organics_CDCE" ; int qc_total_organics_CDCE(time) ; qc_total_organics_CDCE:long_name = "Quality check results on variable: Mass concentration of total organics corrected for the CDCE, ambient aerosol in air" ; qc_total_organics_CDCE:units = "1" ; qc_total_organics_CDCE: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_total_organics_CDCE:standard_name = "quality_flag" ; qc_total_organics_CDCE:flag_method = "bit" ; qc_total_organics_CDCE:bit_1_description = "Inlet pressure low, value set to missing_value." ; qc_total_organics_CDCE:bit_1_assessment = "Bad" ; qc_total_organics_CDCE:bit_1_comment = "Inlet pressure is low (< 1 Torr), suspected critical orifice clog." ; qc_total_organics_CDCE:bit_2_description = "Airbeam anomalous, value set to missing_value." ; qc_total_organics_CDCE:bit_2_assessment = "Bad" ; qc_total_organics_CDCE:bit_2_comment = "Airbeam is anomalous. This could include no airbeam, or very sharp changes to the airbeam that make it difficult to correct for the sensitivity." ; qc_total_organics_CDCE:bit_3_description = "ACSM volume anomalously low, value set to missing_value." ; qc_total_organics_CDCE:bit_3_assessment = "Bad" ; qc_total_organics_CDCE:bit_3_comment = "The total aerosol volume measured by the ACSM is suddenly very low and this is not corroborated by total aerosol volume measured by SMPS and UHSAS. In the absence of airbeam or inlet pressure issues, this likely indicates that the filter switching valve malfunctioned." ; qc_total_organics_CDCE:bit_4_description = "Troubleshooting, maintenance or calibrations, value set to missing_value." ; qc_total_organics_CDCE:bit_4_assessment = "Bad" ; qc_total_organics_CDCE:bit_4_comment = "Instrument is undergoing troubleshooting, routine maintenance or calibrations." ; qc_total_organics_CDCE:bit_5_description = "Other issues, value set to missing_value." ; qc_total_organics_CDCE:bit_5_assessment = "Bad" ; qc_total_organics_CDCE:bit_5_comment = "Other issues that result in bad data. Examples include pump failures, collapsed tubing, etc." ; qc_total_organics_CDCE:bit_6_description = "Air spikes, value set to missing_value." ; qc_total_organics_CDCE:bit_6_assessment = "Bad" ; qc_total_organics_CDCE:bit_6_comment = "Occasionally an air spike produces anomalously high or low mass loadings." ; qc_total_organics_CDCE:bit_7_description = "ACSM volume anomalously low, but no SMPS to corroborate" ; qc_total_organics_CDCE:bit_7_assessment = "Indeterminate" ; qc_total_organics_CDCE:bit_7_comment = "The total aerosol volume measured by the ACSM is suddenly and persistently low, but there is no concurrent SMPS or UHSAS data to fully corroborate whether this is an instrument issue or an unusual atmospheric condition." ; qc_total_organics_CDCE:bit_8_description = "Other suspect issues" ; qc_total_organics_CDCE:bit_8_assessment = "Indeterminate" ; qc_total_organics_CDCE:bit_8_comment = "Other temporary conditions that produce suspect data. Examples include restricted sample flow, AC failure of the AOS, etc." ; qc_total_organics_CDCE:bit_9_description = "Mentor QC flag" ; qc_total_organics_CDCE:bit_9_assessment = "Indeterminate" ; qc_total_organics_CDCE:bit_9_comment = "During data processing, the mentor compares the ACSM volume measured to concurrent measurements in the AOS. This flag is used when such a comparison produces results that are in some way suspect." ; float sulfate_CDCE(time) ; sulfate_CDCE:long_name = "Mass concentration of sulfate corrected for the CDCE, ambient aerosol in air" ; sulfate_CDCE:units = "ug/m^3" ; sulfate_CDCE:missing_value = -9999.f ; sulfate_CDCE:ancillary_variables = "qc_sulfate_CDCE" ; int qc_sulfate_CDCE(time) ; qc_sulfate_CDCE:long_name = "Quality check results on variable: Mass concentration of sulfate corrected for the CDCE, ambient aerosol in air" ; qc_sulfate_CDCE:units = "1" ; qc_sulfate_CDCE: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_sulfate_CDCE:standard_name = "quality_flag" ; qc_sulfate_CDCE:flag_method = "bit" ; qc_sulfate_CDCE:bit_1_description = "Inlet pressure low, value set to missing_value." ; qc_sulfate_CDCE:bit_1_assessment = "Bad" ; qc_sulfate_CDCE:bit_1_comment = "Inlet pressure is low (< 1 Torr), suspected critical orifice clog." ; qc_sulfate_CDCE:bit_2_description = "Airbeam anomalous, value set to missing_value." ; qc_sulfate_CDCE:bit_2_assessment = "Bad" ; qc_sulfate_CDCE:bit_2_comment = "Airbeam is anomalous. This could include no airbeam, or very sharp changes to the airbeam that make it difficult to correct for the sensitivity." ; qc_sulfate_CDCE:bit_3_description = "ACSM volume anomalously low, value set to missing_value." ; qc_sulfate_CDCE:bit_3_assessment = "Bad" ; qc_sulfate_CDCE:bit_3_comment = "The total aerosol volume measured by the ACSM is suddenly very low and this is not corroborated by total aerosol volume measured by SMPS and UHSAS. In the absence of airbeam or inlet pressure issues, this likely indicates that the filter switching valve malfunctioned." ; qc_sulfate_CDCE:bit_4_description = "Troubleshooting, maintenance or calibrations, value set to missing_value." ; qc_sulfate_CDCE:bit_4_assessment = "Bad" ; qc_sulfate_CDCE:bit_4_comment = "Instrument is undergoing troubleshooting, routine maintenance or calibrations." ; qc_sulfate_CDCE:bit_5_description = "Other issues, value set to missing_value." ; qc_sulfate_CDCE:bit_5_assessment = "Bad" ; qc_sulfate_CDCE:bit_5_comment = "Other issues that result in bad data. Examples include pump failures, collapsed tubing, etc." ; qc_sulfate_CDCE:bit_6_description = "Air spikes, value set to missing_value." ; qc_sulfate_CDCE:bit_6_assessment = "Bad" ; qc_sulfate_CDCE:bit_6_comment = "Occasionally an air spike produces anomalously high or low mass loadings." ; qc_sulfate_CDCE:bit_7_description = "ACSM volume anomalously low, but no SMPS to corroborate" ; qc_sulfate_CDCE:bit_7_assessment = "Indeterminate" ; qc_sulfate_CDCE:bit_7_comment = "The total aerosol volume measured by the ACSM is suddenly and persistently low, but there is no concurrent SMPS or UHSAS data to fully corroborate whether this is an instrument issue or an unusual atmospheric condition." ; qc_sulfate_CDCE:bit_8_description = "Other suspect issues" ; qc_sulfate_CDCE:bit_8_assessment = "Indeterminate" ; qc_sulfate_CDCE:bit_8_comment = "Other temporary conditions that produce suspect data. Examples include restricted sample flow, AC failure of the AOS, etc." ; qc_sulfate_CDCE:bit_9_description = "Mentor QC flag" ; qc_sulfate_CDCE:bit_9_assessment = "Indeterminate" ; qc_sulfate_CDCE:bit_9_comment = "During data processing, the mentor compares the ACSM volume measured to concurrent measurements in the AOS. This flag is used when such a comparison produces results that are in some way suspect." ; float ammonium_CDCE(time) ; ammonium_CDCE:long_name = "Mass concentration of ammonium corrected for the CDCE, ambient aerosol in air" ; ammonium_CDCE:units = "ug/m^3" ; ammonium_CDCE:missing_value = -9999.f ; ammonium_CDCE:ancillary_variables = "qc_ammonium_CDCE" ; int qc_ammonium_CDCE(time) ; qc_ammonium_CDCE:long_name = "Quality check results on variable: Mass concentration of ammonium corrected for the CDCE, ambient aerosol in air" ; qc_ammonium_CDCE:units = "1" ; qc_ammonium_CDCE: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_ammonium_CDCE:standard_name = "quality_flag" ; qc_ammonium_CDCE:flag_method = "bit" ; qc_ammonium_CDCE:bit_1_description = "Inlet pressure low, value set to missing_value." ; qc_ammonium_CDCE:bit_1_assessment = "Bad" ; qc_ammonium_CDCE:bit_1_comment = "Inlet pressure is low (< 1 Torr), suspected critical orifice clog." ; qc_ammonium_CDCE:bit_2_description = "Airbeam anomalous, value set to missing_value." ; qc_ammonium_CDCE:bit_2_assessment = "Bad" ; qc_ammonium_CDCE:bit_2_comment = "Airbeam is anomalous. This could include no airbeam, or very sharp changes to the airbeam that make it difficult to correct for the sensitivity." ; qc_ammonium_CDCE:bit_3_description = "ACSM volume anomalously low, value set to missing_value." ; qc_ammonium_CDCE:bit_3_assessment = "Bad" ; qc_ammonium_CDCE:bit_3_comment = "The total aerosol volume measured by the ACSM is suddenly very low and this is not corroborated by total aerosol volume measured by SMPS and UHSAS. In the absence of airbeam or inlet pressure issues, this likely indicates that the filter switching valve malfunctioned." ; qc_ammonium_CDCE:bit_4_description = "Troubleshooting, maintenance or calibrations, value set to missing_value." ; qc_ammonium_CDCE:bit_4_assessment = "Bad" ; qc_ammonium_CDCE:bit_4_comment = "Instrument is undergoing troubleshooting, routine maintenance or calibrations." ; qc_ammonium_CDCE:bit_5_description = "Other issues, value set to missing_value." ; qc_ammonium_CDCE:bit_5_assessment = "Bad" ; qc_ammonium_CDCE:bit_5_comment = "Other issues that result in bad data. Examples include pump failures, collapsed tubing, etc." ; qc_ammonium_CDCE:bit_6_description = "Air spikes, value set to missing_value." ; qc_ammonium_CDCE:bit_6_assessment = "Bad" ; qc_ammonium_CDCE:bit_6_comment = "Occasionally an air spike produces anomalously high or low mass loadings." ; qc_ammonium_CDCE:bit_7_description = "ACSM volume anomalously low, but no SMPS to corroborate" ; qc_ammonium_CDCE:bit_7_assessment = "Indeterminate" ; qc_ammonium_CDCE:bit_7_comment = "The total aerosol volume measured by the ACSM is suddenly and persistently low, but there is no concurrent SMPS or UHSAS data to fully corroborate whether this is an instrument issue or an unusual atmospheric condition." ; qc_ammonium_CDCE:bit_8_description = "Other suspect issues" ; qc_ammonium_CDCE:bit_8_assessment = "Indeterminate" ; qc_ammonium_CDCE:bit_8_comment = "Other temporary conditions that produce suspect data. Examples include restricted sample flow, AC failure of the AOS, etc." ; qc_ammonium_CDCE:bit_9_description = "Mentor QC flag" ; qc_ammonium_CDCE:bit_9_assessment = "Indeterminate" ; qc_ammonium_CDCE:bit_9_comment = "During data processing, the mentor compares the ACSM volume measured to concurrent measurements in the AOS. This flag is used when such a comparison produces results that are in some way suspect." ; float nitrate_CDCE(time) ; nitrate_CDCE:long_name = "Mass concentration of nitrate corrected for the CDCE, ambient aerosol in air" ; nitrate_CDCE:units = "ug/m^3" ; nitrate_CDCE:missing_value = -9999.f ; nitrate_CDCE:ancillary_variables = "qc_nitrate_CDCE" ; int qc_nitrate_CDCE(time) ; qc_nitrate_CDCE:long_name = "Quality check results on variable: Mass concentration of nitrate corrected for the CDCE, ambient aerosol in air" ; qc_nitrate_CDCE:units = "1" ; qc_nitrate_CDCE: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_nitrate_CDCE:standard_name = "quality_flag" ; qc_nitrate_CDCE:flag_method = "bit" ; qc_nitrate_CDCE:bit_1_description = "Inlet pressure low, value set to missing_value." ; qc_nitrate_CDCE:bit_1_assessment = "Bad" ; qc_nitrate_CDCE:bit_1_comment = "Inlet pressure is low (< 1 Torr), suspected critical orifice clog." ; qc_nitrate_CDCE:bit_2_description = "Airbeam anomalous, value set to missing_value." ; qc_nitrate_CDCE:bit_2_assessment = "Bad" ; qc_nitrate_CDCE:bit_2_comment = "Airbeam is anomalous. This could include no airbeam, or very sharp changes to the airbeam that make it difficult to correct for the sensitivity." ; qc_nitrate_CDCE:bit_3_description = "ACSM volume anomalously low, value set to missing_value." ; qc_nitrate_CDCE:bit_3_assessment = "Bad" ; qc_nitrate_CDCE:bit_3_comment = "The total aerosol volume measured by the ACSM is suddenly very low and this is not corroborated by total aerosol volume measured by SMPS and UHSAS. In the absence of airbeam or inlet pressure issues, this likely indicates that the filter switching valve malfunctioned." ; qc_nitrate_CDCE:bit_4_description = "Troubleshooting, maintenance or calibrations, value set to missing_value." ; qc_nitrate_CDCE:bit_4_assessment = "Bad" ; qc_nitrate_CDCE:bit_4_comment = "Instrument is undergoing troubleshooting, routine maintenance or calibrations." ; qc_nitrate_CDCE:bit_5_description = "Other issues, value set to missing_value." ; qc_nitrate_CDCE:bit_5_assessment = "Bad" ; qc_nitrate_CDCE:bit_5_comment = "Other issues that result in bad data. Examples include pump failures, collapsed tubing, etc." ; qc_nitrate_CDCE:bit_6_description = "Air spikes, value set to missing_value." ; qc_nitrate_CDCE:bit_6_assessment = "Bad" ; qc_nitrate_CDCE:bit_6_comment = "Occasionally an air spike produces anomalously high or low mass loadings." ; qc_nitrate_CDCE:bit_7_description = "ACSM volume anomalously low, but no SMPS to corroborate" ; qc_nitrate_CDCE:bit_7_assessment = "Indeterminate" ; qc_nitrate_CDCE:bit_7_comment = "The total aerosol volume measured by the ACSM is suddenly and persistently low, but there is no concurrent SMPS or UHSAS data to fully corroborate whether this is an instrument issue or an unusual atmospheric condition." ; qc_nitrate_CDCE:bit_8_description = "Other suspect issues" ; qc_nitrate_CDCE:bit_8_assessment = "Indeterminate" ; qc_nitrate_CDCE:bit_8_comment = "Other temporary conditions that produce suspect data. Examples include restricted sample flow, AC failure of the AOS, etc." ; qc_nitrate_CDCE:bit_9_description = "Mentor QC flag" ; qc_nitrate_CDCE:bit_9_assessment = "Indeterminate" ; qc_nitrate_CDCE:bit_9_comment = "During data processing, the mentor compares the ACSM volume measured to concurrent measurements in the AOS. This flag is used when such a comparison produces results that are in some way suspect." ; float chloride_CDCE(time) ; chloride_CDCE:long_name = "Mass concentration of chloride corrected for the CDCE, ambient aerosol in air" ; chloride_CDCE:units = "ug/m^3" ; chloride_CDCE:missing_value = -9999.f ; chloride_CDCE:ancillary_variables = "qc_chloride_CDCE" ; int qc_chloride_CDCE(time) ; qc_chloride_CDCE:long_name = "Quality check results on variable: Mass concentration of chloride corrected for the CDCE, ambient aerosol in air" ; qc_chloride_CDCE:units = "1" ; qc_chloride_CDCE: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_chloride_CDCE:standard_name = "quality_flag" ; qc_chloride_CDCE:flag_method = "bit" ; qc_chloride_CDCE:bit_1_description = "Inlet pressure low, value set to missing_value." ; qc_chloride_CDCE:bit_1_assessment = "Bad" ; qc_chloride_CDCE:bit_1_comment = "Inlet pressure is low (< 1 Torr), suspected critical orifice clog." ; qc_chloride_CDCE:bit_2_description = "Airbeam anomalous, value set to missing_value." ; qc_chloride_CDCE:bit_2_assessment = "Bad" ; qc_chloride_CDCE:bit_2_comment = "Airbeam is anomalous. This could include no airbeam, or very sharp changes to the airbeam that make it difficult to correct for the sensitivity." ; qc_chloride_CDCE:bit_3_description = "ACSM volume anomalously low, value set to missing_value." ; qc_chloride_CDCE:bit_3_assessment = "Bad" ; qc_chloride_CDCE:bit_3_comment = "The total aerosol volume measured by the ACSM is suddenly very low and this is not corroborated by total aerosol volume measured by SMPS and UHSAS. In the absence of airbeam or inlet pressure issues, this likely indicates that the filter switching valve malfunctioned." ; qc_chloride_CDCE:bit_4_description = "Troubleshooting, maintenance or calibrations, value set to missing_value." ; qc_chloride_CDCE:bit_4_assessment = "Bad" ; qc_chloride_CDCE:bit_4_comment = "Instrument is undergoing troubleshooting, routine maintenance or calibrations." ; qc_chloride_CDCE:bit_5_description = "Other issues, value set to missing_value." ; qc_chloride_CDCE:bit_5_assessment = "Bad" ; qc_chloride_CDCE:bit_5_comment = "Other issues that result in bad data. Examples include pump failures, collapsed tubing, etc." ; qc_chloride_CDCE:bit_6_description = "Air spikes, value set to missing_value." ; qc_chloride_CDCE:bit_6_assessment = "Bad" ; qc_chloride_CDCE:bit_6_comment = "Occasionally an air spike produces anomalously high or low mass loadings." ; qc_chloride_CDCE:bit_7_description = "ACSM volume anomalously low, but no SMPS to corroborate" ; qc_chloride_CDCE:bit_7_assessment = "Indeterminate" ; qc_chloride_CDCE:bit_7_comment = "The total aerosol volume measured by the ACSM is suddenly and persistently low, but there is no concurrent SMPS or UHSAS data to fully corroborate whether this is an instrument issue or an unusual atmospheric condition." ; qc_chloride_CDCE:bit_8_description = "Other suspect issues" ; qc_chloride_CDCE:bit_8_assessment = "Indeterminate" ; qc_chloride_CDCE:bit_8_comment = "Other temporary conditions that produce suspect data. Examples include restricted sample flow, AC failure of the AOS, etc." ; qc_chloride_CDCE:bit_9_description = "Mentor QC flag" ; qc_chloride_CDCE:bit_9_assessment = "Indeterminate" ; qc_chloride_CDCE:bit_9_comment = "During data processing, the mentor compares the ACSM volume measured to concurrent measurements in the AOS. This flag is used when such a comparison produces results that are in some way suspect." ; float acsm_vol_conc(time) ; acsm_vol_conc:long_name = "ACSM volume concentration" ; acsm_vol_conc:units = "um^3/cm^3" ; acsm_vol_conc:missing_value = -9999.f ; acsm_vol_conc:comment = "ACSM mass concentrations are converted into volume concentration" ; acsm_vol_conc:computation = "volume = [Org]/1.2 + [SO4]/1.77 + [NO3]/1.72 + [NH4]/1.77 + [Chl]/1.53" ; float ammonium_predicted(time) ; ammonium_predicted:long_name = "Mass concentration of ammonium predicted for neutralization." ; ammonium_predicted:units = "ug/m^3" ; ammonium_predicted:missing_value = -9999.f ; ammonium_predicted:comment = "Amount of ammonium that would balance the observed nitrate, sulfate and chloride ions based on stoichiometric weighing" ; ammonium_predicted:computation = "NH4_predicted = 18*(NO3/62 + 2*SO4/96 + Chl/35.5)" ; ammonium_predicted:interpretation = "In general predicted ammonium should be >= measured ammonium. Measured < predicted implies non-neutralized aerosol." ; float CDCE(time) ; CDCE:long_name = "Composition-dependent collection efficiency" ; CDCE:units = "1" ; CDCE:missing_value = -9999.f ; CDCE:comment = "Composition-dependent collection efficiency is calculated based on the algorithm outlined in Middlebrook, et al. (2012)" ; float airbeam_normalization_factor(time) ; airbeam_normalization_factor:long_name = "Airbeam normalization factor" ; airbeam_normalization_factor:units = "1" ; airbeam_normalization_factor:missing_value = -9999.f ; airbeam_normalization_factor:comment = "This field is a correction factor used to correct for instrument drifts. Ref_N2_signal is assessed based on instrument calibrations." ; airbeam_normalization_factor:computation = "Airbeam normalization factor = Ref N2 signal / N2 signal in filtered air" ; float inlet_pressure(time) ; inlet_pressure:long_name = "Inlet pressure, measured" ; inlet_pressure:units = "torr" ; inlet_pressure: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 = "acsmcdcec2_ingest -s cor -f M1 -DR" ; :Conventions = "ARM-1.3" ; :process_version = "ingest-acsmcdcec2-1.0-0.el7" ; :dod_version = "acsmcdce-c2-1.0" ; :input_source = "/data/collection/cor/coracsmcdceM1.02/ACSM_C_20180928.csv" ; :site_id = "cor" ; :platform_id = "acsmcdce" ; :facility_id = "M1" ; :data_level = "c2" ; :location_description = "Cloud, Aerosol, and Complex Terrain Interactions (CACTI), Cordoba, Argentina" ; :datastream = "coracsmcdceM1.c2" ; :serial_number = "140-106" ; :sampling_interval = "1 second" ; :averaging_interval = "28 minutes" ; :doi = "10.5439/1763029" ; :averaging_interval_comment = "The average at time t refers to data collected during the previous averaging interval." ; :ACSM = "Aerosol Chemical Speciation Monitor" ; :history = "created by user dsmgr on machine flint at 2021-06-18 16:34:13, using ingest-acsmcdcec2-1.0-0.el7" ; }