netcdf enaaosghgC1.a1.20200101.010000 { dimensions: time = UNLIMITED ; // (25527 currently) variables: int base_time ; base_time:string = "2020-01-01 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 2020-01-01 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 2020-01-01 00:00:00 0:00" ; time:calendar = "gregorian" ; time:standard_name = "time" ; float cavity_pressure(time) ; cavity_pressure:long_name = "Cavity pressure" ; cavity_pressure:units = "hPa" ; cavity_pressure:missing_value = -9999.f ; cavity_pressure:comment = "units of torr are converted to hPa (multiply torr by 1.3332237)" ; float cavity_temperature(time) ; cavity_temperature:long_name = "Picarro optical cavity temperature" ; cavity_temperature:units = "degC" ; cavity_temperature:missing_value = -9999.f ; float analyzer_temperature(time) ; analyzer_temperature:long_name = "Analyzer temperature" ; analyzer_temperature:units = "degC" ; analyzer_temperature:missing_value = -9999.f ; float etalon_temperature(time) ; etalon_temperature:long_name = "Etalon temperature" ; etalon_temperature:units = "degC" ; etalon_temperature:comment = "Temperature of the etalon-based wavelength monitor. The wavelength monitor is thermally insulated, preventing etalon temperature variations from affecting data acquisition." ; etalon_temperature:missing_value = -9999.f ; float warm_box_temperature(time) ; warm_box_temperature:long_name = "Warm box temperature" ; warm_box_temperature:units = "degC" ; warm_box_temperature:comment = "Temperature of controlled electronics and wavelength monitor chamber." ; warm_box_temperature:missing_value = -9999.f ; int species(time) ; species:long_name = "Species" ; species:units = "unitless" ; species:missing_value = -9999 ; species:flag_values = 1, 2, 3 ; species:flag_meanings = "co2 ch4 h2o" ; float mp_valve_position(time) ; mp_valve_position:long_name = "Value indicates state of the rotary valco valve (range 1 to 8)" ; mp_valve_position:units = "unitless" ; mp_valve_position:missing_value = -9999.f ; mp_valve_position:comment_1 = "A value of 1 means the valve is set to inlet_sample" ; mp_valve_position:comment_2 = "A value of 2 or 3 means the instrument is in a calibration state" ; mp_valve_position:comment_3 = "A value of 4 means the instrument is in a calibration check state" ; mp_valve_position:comment_4 = "Values of 5, 6, 7 or 8 are not currently used. For most samples, the value will be 1, 2, 3 or 4. During a transition from one state to the next, fractional values may be reported. This is normal." ; float outlet_valve(time) ; outlet_valve:long_name = "DAC (digital to analog converter) value for outlet proportional valve" ; outlet_valve:units = "unitless" ; outlet_valve:comment = "The cavity pressure is electronically controlled by changing the size of the outlet valve at the output of the activity." ; outlet_valve:missing_value = -9999.f ; float solenoid_valve(time) ; solenoid_valve:long_name = "Value indicating which solenoid valve is currently used" ; solenoid_valve:units = "unitless" ; solenoid_valve:missing_value = -9999.f ; float co2(time) ; co2:long_name = "Carbon dioxide volume mixing ratio" ; co2:units = "ppm" ; co2:missing_value = -9999.f ; co2:comment = "All three species are measured sequentially. Measurements take 1 to 3 seconds, on average 1 second, depending on the time to achieve cavity ringdown for all species. The native measurement interval for all three species is hence variable." ; float co2_dry(time) ; co2_dry:long_name = "Carbon dioxide dry volume mixing ratio" ; co2_dry:units = "ppm" ; co2_dry:missing_value = -9999.f ; co2_dry:comment = "All three species are measured sequentially. Measurements take 1 to 3 seconds, on average 1 second, depending on the time to achieve cavity ringdown for all species. The native measurement interval for all three species is hence variable." ; float ch4(time) ; ch4:long_name = "Methane volume mixing ratio" ; ch4:units = "ppm" ; ch4:missing_value = -9999.f ; ch4:comment = "All three species are measured sequentially. Measurements take 1 to 3 seconds, on average 1 second, depending on the time to achieve cavity ringdown for all species. The native measurement interval for all three species is hence variable." ; float ch4_dry(time) ; ch4_dry:long_name = "Methane dry volume mixing ratio" ; ch4_dry:units = "ppm" ; ch4_dry:missing_value = -9999.f ; ch4_dry:comment = "All three species are measured sequentially. Measurements take 1 to 3 seconds, on average 1 second, depending on the time to achieve cavity ringdown for all species. The native measurement interval for all three species is hence variable." ; float h2o_vapor(time) ; h2o_vapor:long_name = "Water vapor volume percentage" ; h2o_vapor:units = "%" ; h2o_vapor:missing_value = -9999.f ; h2o_vapor:comment = "All three species are measured sequentially. Measurements take 1 to 3 seconds, on average 1 second, depending on the time to achieve cavity ringdown for all species. The native measurement interval for all three species is hence variable." ; int alarm_status(time) ; alarm_status:long_name = "Alarm status to be interpreted as a binary number." ; alarm_status:units = "unitless" ; alarm_status:flag_masks = 1, 2, 4, 8, 65536 ; alarm_status:flag_meanings = "CO2_out_of_range CH4_out_of_range H2O_out_of_range user_alarm_4 bad_data" ; alarm_status:bit_1_description = "CO2 out of range" ; alarm_status:bit_2_description = "CH4 out of range" ; alarm_status:bit_3_description = "H2O out of range" ; alarm_status:bit_4_description = "user alarm 4" ; alarm_status:bit_17_description = "bad data" ; alarm_status:comment = "Low order 4 bits correspond to user settable alarms via the Picarro GUI. The data manager can also flag data bad, which is done by adding 65536 to the code. A value of zero means everything is ok." ; int instrument_status(time) ; instrument_status:long_name = "Instrument status indicators" ; instrument_status:units = "unitless" ; instrument_status:flag_masks = 1, 2, 4, 64, 128, 256, 512, 8192, 16384 ; instrument_status:flag_meanings = "ready measurement_active error_in_buffer gas_flowing pressure_locked cavity_temp_locked warm_chamber_temp_locked warming_up system_error" ; instrument_status:bit_1_description = "READY" ; instrument_status:bit_2_description = "measurement active" ; instrument_status:bit_3_description = "error in buffer" ; instrument_status:bit_7_description = "gas flowing" ; instrument_status:bit_8_description = "pressure locked" ; instrument_status:bit_9_description = "cavity temp locked" ; instrument_status:bit_10_description = "warm chamber temp locked" ; instrument_status:bit_14_description = "warming up" ; instrument_status:bit_15_description = "system error" ; instrument_status:comment = "A value of 963 indicates normal operation, which includes bits 1, 2, 7, 8, 9 and 10" ; 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 = "aosghg_ingest -s ena -f C1 -DR" ; :Conventions = "ARM-1.2" ; :process_version = "ingest-aosghg-1.1-1.el7" ; :dod_version = "aosghg-a1-1.2" ; :input_source = "/data/reproc/D200124.4/collection/ena/enaaosghgC1.00/CFADS2370_20200101_0100_DataLog_User.dat" ; :site_id = "ena" ; :platform_id = "aosghg" ; :facility_id = "C1" ; :data_level = "a1" ; :location_description = "Eastern North Atlantic (ENA), Graciosa Island, Azores" ; :datastream = "enaaosghgC1.a1" ; :serial_number = "2370" ; :inlet_height = "10 m AGL" ; :doi = "10.5439/1211527" ; :synchronization = "All three species are measured sequentially. Measurements take 1 to 3 seconds, on average 1 second, depending on the time to achieve cavity ringdown for all species. The native measurement interval for all three species is hence variable." ; :history = "created by user giansiracusa on machine agate at 2020-06-19 18:30:14, using ingest-aosghg-1.1-1.el7" ; }