netcdf sgpaosccnC1.a1.20110309.000001 { dimensions: time = UNLIMITED ; // (1076 currently) num_bins = 21 ; variables: int base_time ; base_time:string = "8-Mar-2011,23:59:01 GMT" ; base_time:long_name = "Base time in Epoch" ; base_time:units = "seconds since 1970-1-1 0:00:00 0:00" ; double time_offset(time) ; time_offset:long_name = "Time offset from base_time" ; time_offset:units = "seconds since 2011-03-08 23:59:01 0:00" ; double time(time) ; time:long_name = "Time offset from midnight" ; time:units = "seconds since 2011-03-09 00:00:00 0:00" ; float CCN_ss_set(time) ; CCN_ss_set:long_name = "AOS CCN sample saturation setpoint value reported by instrument" ; CCN_ss_set:units = "%" ; CCN_ss_set:missing_value = -9999.f ; int CCN_temp_unstable_flag(time) ; CCN_temp_unstable_flag:long_name = "Hexadecimal flag, non-zero value means instrument is not operating stably" ; CCN_temp_unstable_flag:units = "unitless" ; CCN_temp_unstable_flag:missing_value = -9999 ; CCN_temp_unstable_flag:bit_1 = "(0x02) set by CPD, based on standard deviation of column temperature difference (threshold exceeded)" ; float CCN_T_TEC1(time) ; CCN_T_TEC1:long_name = "AOS CCN temperature at top of column" ; CCN_T_TEC1:units = "degrees C" ; CCN_T_TEC1:missing_value = -9999.f ; float CCN_T_TEC2(time) ; CCN_T_TEC2:long_name = "AOS CCN temperature at middle of column" ; CCN_T_TEC2:units = "degrees C" ; CCN_T_TEC2:missing_value = -9999.f ; float CCN_T_TEC3(time) ; CCN_T_TEC3:long_name = "AOS CCN temperature at bottom of column" ; CCN_T_TEC3:units = "degrees C" ; CCN_T_TEC3:missing_value = -9999.f ; float CCN_T_sample(time) ; CCN_T_sample:long_name = "AOS CCN temperature of sample air entering the column" ; CCN_T_sample:units = "degrees C" ; CCN_T_sample:missing_value = -9999.f ; float CCN_T_inlet(time) ; CCN_T_inlet:long_name = "AOS CCN temperature of sample air at entrance to instrument" ; CCN_T_inlet:units = "degrees C" ; CCN_T_inlet:missing_value = -9999.f ; float CCN_T_OPC(time) ; CCN_T_OPC:long_name = "AOS CCN temperature of the optical particle counter" ; CCN_T_OPC:units = "degrees C" ; CCN_T_OPC:missing_value = -9999.f ; float CCN_T_nafion(time) ; CCN_T_nafion:long_name = "AOS CCN temperature of the nafion humidifier" ; CCN_T_nafion:units = "degrees C" ; CCN_T_nafion:missing_value = -9999.f ; float CCN_dT_TEC3_TEC1_StdDev(time) ; CCN_dT_TEC3_TEC1_StdDev:long_name = "AOS CCN standard deviation of difference (CCN_T_TEC1 - CCN_T_TEC3)" ; CCN_dT_TEC3_TEC1_StdDev:units = "degrees C" ; CCN_dT_TEC3_TEC1_StdDev:missing_value = -9999.f ; float CCN_Q_sample(time) ; CCN_Q_sample:long_name = "AOS CCN volumetric flowrate of sample air" ; CCN_Q_sample:units = "cm^3/minute" ; CCN_Q_sample:missing_value = -9999.f ; float CCN_Q_sheath(time) ; CCN_Q_sheath:long_name = "AOS CCN volumetric flowrate of sheath air" ; CCN_Q_sheath:units = "cm^3/minute" ; CCN_Q_sheath:missing_value = -9999.f ; float CCN_P_sample(time) ; CCN_P_sample:long_name = "AOS CCN sample pressure" ; CCN_P_sample:units = "hPa" ; CCN_P_sample:missing_value = -9999.f ; float CCN_laser_current(time) ; CCN_laser_current:long_name = "AOS CCN OPC laser current" ; CCN_laser_current:units = "mA" ; CCN_laser_current:missing_value = -9999.f ; float N_CCN(time) ; N_CCN:long_name = "AOS number concentration of CCN" ; N_CCN:units = "1/cm^3" ; N_CCN:missing_value = -9999.f ; int N_CCN_bin_number(time) ; N_CCN_bin_number:long_name = "AOS bin number of lowest channel of OPC include in summation of N_CCN" ; N_CCN_bin_number:units = "unitless" ; N_CCN_bin_number:missing_value = -9999 ; float N_CCN_dN(time, num_bins) ; N_CCN_dN:long_name = "AOS CCN number concentration by bin " ; N_CCN_dN:units = "unitless" ; N_CCN_dN:missing_value = -9999.f ; N_CCN_dN:comment1 = "Each bin contains a droplet count, based on droplet size" ; N_CCN_dN:comment2 = "Bin droplet size (top of each bin) are 0.75um, 1.0um, 1.5um, 2.0um, 2.5um ... to 10um in 0.5um increments" ; float CCN_ss_calc(time) ; CCN_ss_calc:long_name = "AOS CCN sample supersaturation calculated by model)" ; CCN_ss_calc:units = "%" ; CCN_ss_calc:missing_value = -9999.f ; CCN_ss_calc:model_documentation1 = "Roberts, G. C. and Nenes, A. (2005)" ; CCN_ss_calc:model_documentation2 = "A continuous-flow streamwise thermal-gradient CCN chamber for atmospheric measurements." ; CCN_ss_calc:model_documentation3 = "Aerosol Sci. Tech., 39, 206-221" ; CCN_ss_calc:model_documentation4 = "Lance, S., Medina, J., Smith, J. N. and Nenes, A. (2006)" ; CCN_ss_calc:model_documentation5 = "Mapping the operation of the DMT continuous flow CCN counter" ; CCN_ss_calc:model_documentation6 = "Aerosol Sci. Tech., submitted, not yet published" ; float CCN_UpperSizeLimit(num_bins) ; CCN_UpperSizeLimit:long_name = "Size of upper limit of each CCN bin" ; CCN_UpperSizeLimit:units = "um" ; CCN_UpperSizeLimit:missing_value = -9999.f ; float CCN_FirstStageMonitorVoltage(time) ; CCN_FirstStageMonitorVoltage:long_name = "First stage monitor voltage" ; CCN_FirstStageMonitorVoltage:units = "V (DC)" ; CCN_FirstStageMonitorVoltage:missing_value = -9999.f ; float CCN_Temperature_Gradient(time) ; CCN_Temperature_Gradient:long_name = "CCN temperature gradient" ; CCN_Temperature_Gradient:units = "C" ; CCN_Temperature_Gradient:missing_value = -9999.f ; float CCN_ProportionalValveVoltage(time) ; CCN_ProportionalValveVoltage:long_name = "CCN Proportional valve voltage" ; CCN_ProportionalValveVoltage:units = "V" ; CCN_ProportionalValveVoltage: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 ; float lon ; lon:long_name = "East longitude" ; lon:units = "degree_E" ; lon:valid_min = -180.f ; lon:valid_max = 180.f ; float alt ; alt:long_name = "Altitude above mean sea level" ; alt:units = "m" ; // global attributes: :command_line = "aos_ingest -n aos -s sgp -f C1" ; :process_version = "ingest-aos-10.2-0.el5" ; :ingest_software = "ingest-aos-10.2-0.el5" ; :dod_version = "aosccn-a1-2.0" ; :site_id = "sgp" ; :facility_id = "C1: Lamont, Oklahoma" ; :data_level = "a1" ; :input_source = "/data/collection/sgp/sgpaosC1.00/CCNprep_20110309_000000" ; :sampling_interval = "1 second" ; :averaging_interval = "60 seconds" ; :serial_number = "N/A" ; :zeb_platform = "sgpaosccnC1.a1" ; :history = "created by user dsmgr on machine gold at 9-Mar-2011,0:31:00, using $State: zebra-zeblib-4.20-0.el5 $" ; }