netcdf sgpghgflaskC1.b1.20240104.200000 { dimensions: time = UNLIMITED ; // (3 currently) flask = 2 ; strlen = 8 ; variables: int base_time ; base_time:string = "2024-01-04 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 2024-01-04 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 2024-01-04 00:00:00 0:00" ; time:calendar = "gregorian" ; time:standard_name = "time" ; char sample_method(time) ; sample_method:long_name = "Sampling method" ; sample_method:units = "unitless" ; sample_method:sample_method_P = "Sample collected using a portable, battery powered pumping unit. Two flasks are connected in series, flushed with air, and then pressurized to 1.2 - 1.5 times ambient pressure." ; sample_method:sample_method_D = "Similar to P but the air passes through a condenser cooled to about 5 degC to partially dry the sample." ; sample_method:sample_method_G = "Similar to D but with a gold-plated condenser." ; sample_method:sample_method_T = "Evacuated flask filled by opening an O-ring sealed stopcock." ; sample_method:sample_method_S = "Flasks filled by sampling air from the in situ measurement air intake system." ; sample_method:sample_method_F = "Five liter evacuated flasks filled by opening a ground glass, greased stopcock." ; float intake_height(time) ; intake_height:long_name = "Sample intake height" ; intake_height:units = "m" ; intake_height:missing_value = -9999.f ; char sample_id(time, flask, strlen) ; sample_id:long_name = "Sample Id" ; sample_id:units = "unitless" ; int event_number(time, flask) ; event_number:long_name = "Event number" ; event_number:units = "unitless" ; event_number:missing_value = -9999 ; float co2(time, flask) ; co2:long_name = "Carbon dioxide concentration" ; co2:units = "ppm" ; co2:valid_min = 350.f ; co2:valid_max = 1000.f ; co2:missing_value = -9999.f ; co2:analysis_group = "CCGG" ; co2:ancillary_variables = "qc_co2" ; int qc_co2(time, flask) ; qc_co2:long_name = "Quality check results on field: Carbon dioxide concentration" ; qc_co2:units = "unitless" ; qc_co2:description = "See global attributes for individual QC bit descriptions." ; qc_co2:flag_method = "bit" ; float ch4(time, flask) ; ch4:long_name = "Methane concentration" ; ch4:units = "ppb" ; ch4:valid_min = 1700.f ; ch4:valid_max = 10000.f ; ch4:missing_value = -9999.f ; ch4:analysis_group = "CCGG" ; ch4:ancillary_variables = "qc_ch4" ; int qc_ch4(time, flask) ; qc_ch4:long_name = "Quality check results on field: Methane concentration" ; qc_ch4:units = "unitless" ; qc_ch4:description = "See global attributes for individual QC bit descriptions." ; qc_ch4:flag_method = "bit" ; float co(time, flask) ; co:long_name = "Carbon monoxide concentration" ; co:units = "ppb" ; co:valid_min = 50.f ; co:valid_max = 1000.f ; co:missing_value = -9999.f ; co:analysis_group = "CCGG" ; co:ancillary_variables = "qc_co" ; int qc_co(time, flask) ; qc_co:long_name = "Quality check results on field: Carbon monoxide concentration" ; qc_co:units = "unitless" ; qc_co:description = "See global attributes for individual QC bit descriptions." ; qc_co:flag_method = "bit" ; float h2(time, flask) ; h2:long_name = "Hydrogen concentration" ; h2:units = "ppt" ; h2:valid_min = 140.f ; h2:valid_max = 1200.f ; h2:missing_value = -9999.f ; h2:analysis_group = "CCGG" ; h2:ancillary_variables = "qc_h2" ; int qc_h2(time, flask) ; qc_h2:long_name = "Quality check results on field: Hydrogen concentration" ; qc_h2:units = "unitless" ; qc_h2:description = "See global attributes for individual QC bit descriptions." ; qc_h2:flag_method = "bit" ; float n2o(time, flask) ; n2o:long_name = "Nitrous oxide concentration" ; n2o:units = "ppb" ; n2o:valid_min = 260.f ; n2o:valid_max = 370.f ; n2o:missing_value = -9999.f ; n2o:analysis_group = "CCGG" ; n2o:ancillary_variables = "qc_n2o" ; int qc_n2o(time, flask) ; qc_n2o:long_name = "Quality check results on field: Nitrous oxide concentration" ; qc_n2o:units = "unitless" ; qc_n2o:description = "See global attributes for individual QC bit descriptions." ; qc_n2o:flag_method = "bit" ; float sf6(time, flask) ; sf6:long_name = "Sulfur hexafluoride concentration" ; sf6:units = "ppt" ; sf6:valid_min = 2.f ; sf6:valid_max = 20.f ; sf6:missing_value = -9999.f ; sf6:analysis_group = "CCGG" ; sf6:ancillary_variables = "qc_sf6" ; int qc_sf6(time, flask) ; qc_sf6:long_name = "Quality check results on field: Sulfur hexafluoride concentration" ; qc_sf6:units = "unitless" ; qc_sf6:description = "See global attributes for individual QC bit descriptions." ; qc_sf6:flag_method = "bit" ; float sf6_hats(time, flask) ; sf6_hats:long_name = "Sulfur hexafluoride concentration (HATS)" ; sf6_hats:units = "ppt" ; sf6_hats:valid_min = 2.f ; sf6_hats:valid_max = 20.f ; sf6_hats:missing_value = -9999.f ; sf6_hats:analysis_group = "HATS" ; sf6_hats:ancillary_variables = "qc_sf6_hats" ; int qc_sf6_hats(time, flask) ; qc_sf6_hats:long_name = "Quality check results on field: Sulfur hexafluoride concentration (HATS)" ; qc_sf6_hats:units = "unitless" ; qc_sf6_hats:description = "See global attributes for individual QC bit descriptions." ; qc_sf6_hats:flag_method = "bit" ; float co2c13(time, flask) ; co2c13:long_name = "Isotopic ratio of C13 in CO2" ; co2c13:units = "1/1E6" ; co2c13:valid_min = -10.f ; co2c13:valid_max = -7.5f ; co2c13:missing_value = -9999.f ; co2c13:analysis_group = "SIL" ; co2c13:ancillary_variables = "qc_co2c13" ; int qc_co2c13(time, flask) ; qc_co2c13:long_name = "Quality check results on field: Isotopic ratio of C13 in CO2" ; qc_co2c13:units = "unitless" ; qc_co2c13:description = "See global attributes for individual QC bit descriptions." ; qc_co2c13:flag_method = "bit" ; float co2o18(time, flask) ; co2o18:long_name = "Isotopic ratio of O18 in CO2" ; co2o18:units = "1/1E6" ; co2o18:valid_min = -2.f ; co2o18:valid_max = 2.f ; co2o18:missing_value = -9999.f ; co2o18:analysis_group = "SIL" ; co2o18:ancillary_variables = "qc_co2o18" ; int qc_co2o18(time, flask) ; qc_co2o18:long_name = "Quality check results on field: Isotopic ratio of O18 in CO2" ; qc_co2o18:units = "unitless" ; qc_co2o18:description = "See global attributes for individual QC bit descriptions." ; qc_co2o18:flag_method = "bit" ; float ch4c13(time, flask) ; ch4c13:long_name = "Isotopic ratio of C13 in CH4" ; ch4c13:units = "1/1E6" ; ch4c13:valid_min = -70.f ; ch4c13:valid_max = -30.f ; ch4c13:missing_value = -9999.f ; ch4c13:analysis_group = "SIL" ; ch4c13:ancillary_variables = "qc_ch4c13" ; int qc_ch4c13(time, flask) ; qc_ch4c13:long_name = "Quality check results on field: Isotopic ratio of C13 in CH4" ; qc_ch4c13:units = "unitless" ; qc_ch4c13:description = "See global attributes for individual QC bit descriptions." ; qc_ch4c13:flag_method = "bit" ; 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 = "ghgflask_ingest -s sgp -f C1 -RD" ; :Conventions = "ARM-1.2" ; :process_version = "ingest-ghgflask-1.2-0.el7" ; :dod_version = "ghgflask-b1-1.1" ; :input_source = "/data/reproc/D240409.4/collection/sgp/sgpghgflaskC1.00/sgpghgflask.b1.20240104.2000.csv" ; :site_id = "sgp" ; :platform_id = "ghgflask" ; :facility_id = "C1" ; :data_level = "b1" ; :location_description = "Southern Great Plains (SGP), Lamont, Oklahoma" ; :datastream = "sgpghgflaskC1.b1" ; :qc_bit_comment = "The QC field values are a bit packed representation of true/false values for the tests that may have been performed. A QC value of zero means that none of the tests performed on the value failed." ; :qc_bit_1_description = "Value is equal to missing_value." ; :qc_bit_1_assessment = "Bad" ; :qc_bit_2_description = "Value is less than the valid_min." ; :qc_bit_2_assessment = "Bad" ; :qc_bit_3_description = "Value is greater than the valid_max." ; :qc_bit_3_assessment = "Bad" ; :qc_bit_4_description = "The result might not be representative of the sampling location and should be used with caution." ; :qc_bit_4_assessment = "Indeterminate" ; :qc_bit_5_description = "There was a sample collection or measurement problem and the result should not be used for data analysis." ; :qc_bit_5_assessment = "Bad" ; :doi = "10.5439/1328127" ; :history = "created by user erwinmj on machine prod-proc5.adc.arm.gov at 2024-04-10 16:09:19, using ingest-ghgflask-1.2-0.el7" ; }