netcdf pvcaosccnavgM1.c1.20130613.000400 { dimensions: time = UNLIMITED ; // (144 currently) droplet_size = 21 ; variables: int base_time ; base_time:string = "2013-06-13 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" ; double time_offset(time) ; time_offset:long_name = "Time offset from base_time" ; time_offset:units = "seconds since 2013-06-13 00:00:00 0:00" ; double time(time) ; time:long_name = "Time offset from midnight" ; time:units = "seconds since 2013-06-13 00:00:00 0:00" ; int qc_time(time) ; qc_time:long_name = "Quality check results on field: Time offset from midnight" ; qc_time:units = "unitless" ; qc_time:description = "This field contains bit packed values which should be interpreted as listed. No bits set (zero) represents good data." ; qc_time:bit_1_description = "Delta time between current and previous samples is zero." ; qc_time:bit_1_assessment = "Indeterminate" ; qc_time:bit_2_description = "Delta time between current and previous samples is less than the delta_t_lower_limit field attribute." ; qc_time:bit_2_assessment = "Indeterminate" ; qc_time:bit_3_description = "Delta time between current and previous samples is greater than the delta_t_upper_limit field attribute." ; qc_time:bit_3_assessment = "Indeterminate" ; qc_time:delta_t_lower_limit = 240. ; qc_time:delta_t_upper_limit = 360. ; qc_time:prior_sample_flag = 1 ; qc_time:comment = "If the \'prior_sample_flag\' is set the first sample time from a new raw file will be compared against the time just previous to it in the stored data. If it is not set the qc_time value for the first sample will be set to 0." ; float droplet_size(droplet_size) ; droplet_size:long_name = "Upper limit of each CCN bin" ; droplet_size:units = "um" ; droplet_size:comment = "The last bin has no explicit upper limit. All particles larger than 10 micron are included in this last bin." ; droplet_size:missing_value = -9999.f ; droplet_size:attribution = "Named \"num_bins\" in aosccn.a1 and aosccn100.a1" ; float supersaturation_setpoint(time) ; supersaturation_setpoint:long_name = "Sample saturation setpoint" ; supersaturation_setpoint:units = "%" ; supersaturation_setpoint:missing_value = -9999.f ; supersaturation_setpoint:attribution = "Named \"num_bins\" in aosccn.a1 and aosccn100.a1" ; int qc_supersaturation_setpoint(time) ; qc_supersaturation_setpoint:long_name = "Quality check results on field: Sample saturation setpoint" ; qc_supersaturation_setpoint:units = "unitless" ; qc_supersaturation_setpoint:description = "This field contains bit packed values which should be interpreted as listed. No bits set (zero) represents good data." ; qc_supersaturation_setpoint:bit_1_description = "Transformation could not finish (all values bad or outside range, etc.), value set to missing_value." ; qc_supersaturation_setpoint:bit_1_assessment = "Bad" ; qc_supersaturation_setpoint:bit_2_description = "Transformation resulted in an indeterminate outcome." ; qc_supersaturation_setpoint:bit_2_assessment = "Indeterminate" ; float supersaturation_calculated(time) ; supersaturation_calculated:long_name = "Sample supersaturation calculated by model" ; supersaturation_calculated:units = "%" ; supersaturation_calculated:missing_value = -9999.f ; supersaturation_calculated:model_documentation1 = "Roberts, G. C. and Nenes, A. (2005)" ; supersaturation_calculated:model_documentation2 = "A continuous-flow streamwise thermal-gradient CCN chamber for atmospheric measurements." ; supersaturation_calculated:model_documentation3 = "Aerosol Sci. Tech., 39, 206-221" ; supersaturation_calculated:model_documentation4 = "Lance, S., Medina, J., Smith, J. N. and Nenes, A. (2006)" ; supersaturation_calculated:model_documentation5 = "Mapping the operation of the DMT continuous flow CCN counter" ; supersaturation_calculated:model_documentation6 = "Aerosol Sci. Tech., submitted, not yet published" ; supersaturation_calculated:attribution = "Named \"num_bins\" in aosccn.a1 and aosccn100.a1" ; int qc_supersaturation_calculated(time) ; qc_supersaturation_calculated:long_name = "Quality check results on field: Sample supersaturation calculated by model" ; qc_supersaturation_calculated:units = "unitless" ; qc_supersaturation_calculated:description = "This field contains bit packed values which should be interpreted as listed. No bits set (zero) represents good data." ; qc_supersaturation_calculated:bit_1_description = "Transformation could not finish (all values bad or outside range, etc.), value set to missing_value." ; qc_supersaturation_calculated:bit_1_assessment = "Bad" ; qc_supersaturation_calculated:bit_2_description = "Transformation resulted in an indeterminate outcome." ; qc_supersaturation_calculated:bit_2_assessment = "Indeterminate" ; float column_temperature_gradient_setting(time) ; column_temperature_gradient_setting:long_name = "Gradient between column top and bottom temperature settings" ; column_temperature_gradient_setting:units = "degC" ; column_temperature_gradient_setting:comment = "The temperature settings (and thus the column temperature gradient) are determined according to the supersaturation setting." ; column_temperature_gradient_setting:missing_value = -9999.f ; int qc_column_temperature_gradient_setting(time) ; qc_column_temperature_gradient_setting:long_name = "Quality check results on field: Gradient between column top and bottom temperature settings" ; qc_column_temperature_gradient_setting:units = "unitless" ; qc_column_temperature_gradient_setting:description = "This field contains bit packed values which should be interpreted as listed. No bits set (zero) represents good data." ; qc_column_temperature_gradient_setting:bit_1_description = "Transformation could not finish (all values bad or outside range, etc.), value set to missing_value." ; qc_column_temperature_gradient_setting:bit_1_assessment = "Bad" ; qc_column_temperature_gradient_setting:bit_2_description = "Transformation resulted in an indeterminate outcome." ; qc_column_temperature_gradient_setting:bit_2_assessment = "Indeterminate" ; float column_temperature_gradient_measured(time) ; column_temperature_gradient_measured:long_name = "Measured temperature difference between top and bottom of column" ; column_temperature_gradient_measured:units = "degC" ; column_temperature_gradient_measured:comment = "mean(CCN_T_TEC3 - CCN_T_TEC1)" ; column_temperature_gradient_measured:missing_value = -9999.f ; int qc_column_temperature_gradient_measured(time) ; qc_column_temperature_gradient_measured:long_name = "Quality check results on field: Measured temperature difference between top and bottom of column" ; qc_column_temperature_gradient_measured:units = "unitless" ; qc_column_temperature_gradient_measured:description = "This field contains bit packed values which should be interpreted as listed. No bits set (zero) represents good data." ; qc_column_temperature_gradient_measured:bit_1_description = "Transformation could not finish (all values bad or outside range, etc.), value set to missing_value." ; qc_column_temperature_gradient_measured:bit_1_assessment = "Bad" ; qc_column_temperature_gradient_measured:bit_2_description = "Transformation resulted in an indeterminate outcome." ; qc_column_temperature_gradient_measured:bit_2_assessment = "Indeterminate" ; float column_temperature_gradient_measured_std(time) ; column_temperature_gradient_measured_std:long_name = "Standard deviation of measured temperature difference between top and bottom of column" ; column_temperature_gradient_measured_std:units = "degC" ; column_temperature_gradient_measured_std:comment = "stddev(CCN_T_TEC1 - CCN_T_TEC3)" ; column_temperature_gradient_measured_std:missing_value = -9999.f ; float N_CCN(time) ; N_CCN:long_name = "Cloud condensation nuclei number density" ; N_CCN:units = "1/cm^3" ; N_CCN:missing_value = -9999.f ; int qc_N_CCN(time) ; qc_N_CCN:long_name = "Quality check results on field: Cloud condensation nuclei number density" ; qc_N_CCN:units = "unitless" ; qc_N_CCN:description = "This field contains bit packed values which should be interpreted as listed. No bits set (zero) represents good data." ; qc_N_CCN:bit_1_description = "Transformation could not finish (all values bad or outside range, etc.), value set to missing_value." ; qc_N_CCN:bit_1_assessment = "Bad" ; qc_N_CCN:bit_2_description = "Transformation resulted in an indeterminate outcome." ; qc_N_CCN:bit_2_assessment = "Indeterminate" ; qc_N_CCN:bit_3_description = "N_CCN > N_CPC" ; qc_N_CCN:bit_3_assessment = "Indeterminate" ; qc_N_CCN:bit_3_comment = "Physically, it is not possible for N_CCN to exceed N_CPC so one or the other of these fields must be in error. Use either value with caution." ; qc_N_CCN:bit_4_description = "N_CPC is missing" ; qc_N_CCN:bit_4_assessment = "Indeterminate" ; float N_CCN_std(time) ; N_CCN_std:long_name = "Standard deviation of number concentration of CCN" ; N_CCN_std:units = "1/cm^3" ; N_CCN_std:missing_value = -9999.f ; float N_CPC(time) ; N_CPC:long_name = "Condensation particle concentration number" ; N_CPC:units = "1/cm^3" ; N_CPC:missing_value = -9999.f ; N_CPC:instrument = "TSI model 3010 Condensation Particle Counter" ; int qc_N_CPC(time) ; qc_N_CPC:long_name = "Quality check results on field: Condensation particle concentration number" ; qc_N_CPC:units = "unitless" ; qc_N_CPC:description = "This field contains bit packed values which should be interpreted as listed. No bits set (zero) represents good data." ; qc_N_CPC:bit_1_description = "Transformation could not finish (all values bad or outside range, etc.), value set to missing_value." ; qc_N_CPC:bit_1_assessment = "Bad" ; qc_N_CPC:bit_2_description = "Transformation resulted in an indeterminate outcome." ; qc_N_CPC:bit_2_assessment = "Indeterminate" ; qc_N_CPC:bit_3_description = "N_CCN > N_CPC" ; qc_N_CPC:bit_3_assessment = "Bad" ; qc_N_CPC:bit_3_comment = "Physically, it is not possible for N_CCN to exceed N_CPC so one or the other of these fields must be in error. Use either value with caution." ; qc_N_CPC:bit_4_description = "N_CCN is missing" ; qc_N_CPC:bit_4_assessment = "Indeterminate" ; float N_CPC_std(time) ; N_CPC_std:long_name = "Standard deviation of Condensation Particle Concentration Number" ; N_CPC_std:units = "1/cm^3" ; N_CPC_std:missing_value = -9999.f ; N_CPC_std:instrument = "TSI model 3010 Condensation Particle Counter" ; float N_CCN_dN(time, droplet_size) ; N_CCN_dN:long_name = "Size distribution of activated nuclei" ; 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 incrementsincrements; Bin 21 is the count for droplets with sizes greater than 10 um" ; int qc_N_CCN_dN(time, droplet_size) ; qc_N_CCN_dN:long_name = "Quality check results on field: Size distribution of activated nuclei" ; qc_N_CCN_dN:units = "unitless" ; qc_N_CCN_dN:description = "This field contains bit packed values which should be interpreted as listed. No bits set (zero) represents good data." ; qc_N_CCN_dN:bit_1_description = "Transformation could not finish (all values bad or outside range, etc.), value set to missing_value." ; qc_N_CCN_dN:bit_1_assessment = "Bad" ; qc_N_CCN_dN:bit_2_description = "Transformation resulted in an indeterminate outcome." ; qc_N_CCN_dN:bit_2_assessment = "Indeterminate" ; qc_N_CCN_dN:bit_3_description = "N_CCN > N_CPC" ; qc_N_CCN_dN:bit_3_assessment = "Indeterminate" ; qc_N_CCN_dN:bit_3_comment = "Physically, it is not possible for N_CCN to exceed N_CPC so one or the other of these fields must be in error. Use either value with caution." ; qc_N_CCN_dN:bit_4_description = "N_CCN is missing" ; qc_N_CCN_dN:bit_4_assessment = "Bad" ; qc_N_CCN_dN:bit_5_description = "N_CPC is missing" ; qc_N_CCN_dN:bit_5_assessment = "Indeterminate" ; 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 = "aosccnavg_vap -n aosccnavg -s pvc -f M1 -b 20130613 -e 20130614 -R" ; :process_version = "vap-aosccnavg-1.4-0.el5" ; :dod_version = "aosccnavg-c1-1.1" ; :site_id = "pvc" ; :facility_id = "M1: Cape Cod, Massachusetts" ; :input_datastreams_description = "A string consisting of the datastream(s), datastream version(s), and datastream date (range)." ; :input_datastreams_num = 2 ; :input_datastreams = "pvcaosccn100M1.a1 : 11.3 : 20130613.000000\n", "pvcaoscpcM1.a1 : 11.3 : 20130613.000000" ; :qc_standards_version = "1.0" ; :datastream = "pvcaosccnavgM1.c1" ; :history = "created by user dsmgr on machine gold at 2013-09-06 16:27:51, using vap-aosccnavg-1.4-0.el5" ; }