Data Quality Report for Order ID: 187299
User ID: nojgaardj1    Date completed: 2017-08-17
All DQRs
DQR ID Subject Affected Data Streams Data Quality Metric
D170217.1 OLI/GHG/M1 - Analyzer valve failure oliaosghgM1.a1 Incorrect
D160330.1 OLI/GHG/M1 - Reprocessed and Corrected:Incorrect data type oliaosghgM1.a1 Note
D160213.2 OLI/GHG/M1 - Tower pump failure oliaosghgM1.a1 Suspect
D160114.7 OLI/GHG/M1 - Instrument setup probationary period oliaosghgM1.a1 Incorrect
D160213.1 OLI/GHG/M1 - Chiller failure oliaosghgauxM1.a1 Incorrect
D160317.7 OLI/GHG/M1 - Line pressure control failure oliaosghgM1.a1 Incorrect
D160520.1 OLI/GHG/M1 - Snow removal causing spikes oliaosghgM1.a1 Incorrect
D170420.9 OLI/GHG/M1 - Site power outage oliaosghgM1.b0 Missing
D160408.2 OLI/GHG/M1 - Pressure controller failure oliaosghgM1.a1 Incorrect
D170704.1 OLI/GHG/M1 - System maintenance and calibration testing oliaosghgM1.b0 Incorrect
D170320.6 OLI/ALL/M1 - Power Outage oliaosnephwet1mM1.b1 Note
D161014.7 OLI/GHG/M1 - Reprocessed and Corrected: addition of height global attribute oliaosghgauxM1.a1 Note
 
DQR ID: D170217.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2017-01-05 14:00:00 2017-02-04 00:00:00 Incorrect
Subject: OLI/GHG/M1 - Analyzer valve failure
Affected Datastreams: oliaosghgM1.a1
Description Data is missing due to analyzer valve failure. Following instrument replacement on 2017/02/01, mentors were performing preventative maintenance, upgrades, and calibration testing.
Measurements
  • ch4 (Methane volume mixing ratio)
  • species (Species)
  • cavity_pressure (Cavity pressure)
  • co2_dry (Carbon dioxide dry volume mixing ratio)
  • alarm_status (Alarm status to be interpreted as a binary number.)
  • ch4_dry (Methane dry volume mixing ratio)
  • analyzer_temperature (Analyzer temperature)
  • mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8))
  • cavity_temperature (Picarro optical cavity temperature)
  • co2 (Carbon dioxide volume mixing ratio)
  • h2o_vapor (Water vapor volume percentage)
  • instrument_status (Instrument status indicators)
  • warm_box_temperature (Warm box temperature)
  • mp_valve_position (Average multi port valve position)
  • outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)
  • solenoid_valve (Value indicating which solenoid valve is currently used)
  • etalon_temperature (Etalon temperature)
 
DQR ID: D160330.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2015-05-31 22:56:00 2016-04-19 23:59:59 Note
Subject: OLI/GHG/M1 - Reprocessed and Corrected:Incorrect data type
Affected Datastreams: oliaosghgM1.a1
Description DATA REPROCESSED and CORRECTED: The mp_valve_position field was being read as an integer instead of float. The ingest was corrected and the raw data were run through the ingest to fix the issue. The data were Archived in July 2016. Please retrieve the reprocessed data for use in your analysis. You may find these data using the ARM Discovery tool at the following link: http://www.archive.arm.gov/discovery/#v/results/s/finst::ghg/fsite::oli/ffac::oli.M1 ORIGINAL DQR CATEGORY: Red( Incorrect) REPROCESSED and CORRECTED DATA ARCHIVED:2016-07 REPROCESS IDENTIFICATION NUMBER: RID 1455 --------------------------------------------------- --- ORIGINAL DQR DESCRIPTION --- --------------------------------------------------- Data will be reprocessed to read MP_VALVE_POSITION as a float instead of integer.
Measurements
  • mp_valve_position (Average multi port valve position)
  • mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8))
 
DQR ID: D160213.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2015-10-26 12:00:00 2015-10-26 17:59:59 Suspect
Subject: OLI/GHG/M1 - Tower pump failure
Affected Datastreams: oliaosghgM1.a1
Description Tower pump failure
Measurements
  • nafion_purge_pressure (Average Nafion vacuum purge pressure)
  • exhaust_flow (Average line exhaust flow rate for tower sample)
  • cavity_temperature (Picarro optical cavity temperature)
  • h2o_vapor (Water vapor volume percentage)
  • nafion_box_temperature (Average nafion box temperature)
  • rear_fan_flow (Average air flow rate near rear fan in pump box)
  • mp_valve_position (Average multi port valve position)
  • alt (Altitude above mean sea level)
  • dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box)
  • outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)
  • dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box)
  • pump_box_temperature (Average pump box temperature)
  • base_time (Base time in Epoch)
  • mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8))
  • lat (North latitude)
  • instrument_status (Instrument status indicators)
  • liquid_alarm_tower_inlet (Average liquid alarm state for tower sample)
  • warm_box_temperature (Warm box temperature)
  • line_pressure_tower_inlet (Average line pressure for tower sample)
  • calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder)
  • time (Time offset from midnight)
  • etalon_temperature (Etalon temperature)
  • ch4 (Methane volume mixing ratio)
  • species (Species)
  • co2_dry (Carbon dioxide dry volume mixing ratio)
  • co2 (Carbon dioxide volume mixing ratio)
  • chiller_temperature (Average chiller temperature during 1 minute interval)
  • lon (East longitude)
  • calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder)
  • solenoid_valve (Value indicating which solenoid valve is currently used)
  • calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder)
  • calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder)
  • calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder)
  • front_fan_flow (Average air flow rate near front fan in pump box)
  • pressure_control (Average line pressure controller control pressure)
  • cavity_pressure (Cavity pressure)
  • ch4_dry (Methane dry volume mixing ratio)
  • alarm_status (Alarm status to be interpreted as a binary number.)
  • analyzer_temperature (Analyzer temperature)
  • calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder)
  • time_offset (Time offset from base_time)
  • dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box)
  • battery_minimum (Logger battery minimum in 1 minute interval)
 
DQR ID: D160114.7    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2015-05-31 22:56:00 2015-06-28 23:59:00 Incorrect
Subject: OLI/GHG/M1 - Instrument setup probationary period
Affected Datastreams: oliaosghgM1.a1
Description Instrument setup and probationary period. Additional information: 2015-06-12 10:00:00,2015-06-22 05:59:59 - Multiport valve was 0; not powered on or connected to data acquisition software 2015-06-22 06:00:00,2015-06-28 02:59:59 - Site intermittent power loss
Measurements
  • nafion_purge_pressure (Average Nafion vacuum purge pressure)
  • exhaust_flow (Average line exhaust flow rate for tower sample)
  • cavity_temperature (Picarro optical cavity temperature)
  • h2o_vapor (Water vapor volume percentage)
  • nafion_box_temperature (Average nafion box temperature)
  • rear_fan_flow (Average air flow rate near rear fan in pump box)
  • mp_valve_position (Average multi port valve position)
  • dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box)
  • outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)
  • dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box)
  • mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8))
  • pump_box_temperature (Average pump box temperature)
  • instrument_status (Instrument status indicators)
  • liquid_alarm_tower_inlet (Average liquid alarm state for tower sample)
  • warm_box_temperature (Warm box temperature)
  • line_pressure_tower_inlet (Average line pressure for tower sample)
  • calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder)
  • etalon_temperature (Etalon temperature)
  • ch4 (Methane volume mixing ratio)
  • species (Species)
  • co2_dry (Carbon dioxide dry volume mixing ratio)
  • co2 (Carbon dioxide volume mixing ratio)
  • chiller_temperature (Average chiller temperature during 1 minute interval)
  • calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder)
  • solenoid_valve (Value indicating which solenoid valve is currently used)
  • calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder)
  • calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder)
  • calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder)
  • front_fan_flow (Average air flow rate near front fan in pump box)
  • pressure_control (Average line pressure controller control pressure)
  • cavity_pressure (Cavity pressure)
  • alarm_status (Alarm status to be interpreted as a binary number.)
  • ch4_dry (Methane dry volume mixing ratio)
  • analyzer_temperature (Analyzer temperature)
  • calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder)
  • dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box)
  • battery_minimum (Logger battery minimum in 1 minute interval)
 
DQR ID: D160213.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2015-07-21 06:00:00 2015-08-10 16:59:59 Incorrect
Subject: OLI/GHG/M1 - Chiller failure
Affected Datastreams: oliaosghgauxM1.a1
Description Chiller failure during this period
Measurements
  • nafion_purge_pressure (Average Nafion vacuum purge pressure)
  • exhaust_flow (Average line exhaust flow rate for tower sample)
  • cavity_temperature (Picarro optical cavity temperature)
  • h2o_vapor (Water vapor volume percentage)
  • nafion_box_temperature (Average nafion box temperature)
  • rear_fan_flow (Average air flow rate near rear fan in pump box)
  • mp_valve_position (Average multi port valve position)
  • dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box)
  • outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)
  • dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box)
  • pump_box_temperature (Average pump box temperature)
  • mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8))
  • instrument_status (Instrument status indicators)
  • liquid_alarm_tower_inlet (Average liquid alarm state for tower sample)
  • warm_box_temperature (Warm box temperature)
  • line_pressure_tower_inlet (Average line pressure for tower sample)
  • calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder)
  • etalon_temperature (Etalon temperature)
  • ch4 (Methane volume mixing ratio)
  • species (Species)
  • co2_dry (Carbon dioxide dry volume mixing ratio)
  • co2 (Carbon dioxide volume mixing ratio)
  • chiller_temperature (Average chiller temperature during 1 minute interval)
  • calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder)
  • solenoid_valve (Value indicating which solenoid valve is currently used)
  • calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder)
  • front_fan_flow (Average air flow rate near front fan in pump box)
  • calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder)
  • calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder)
  • pressure_control (Average line pressure controller control pressure)
  • cavity_pressure (Cavity pressure)
  • alarm_status (Alarm status to be interpreted as a binary number.)
  • ch4_dry (Methane dry volume mixing ratio)
  • analyzer_temperature (Analyzer temperature)
  • calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder)
  • dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box)
  • battery_minimum (Logger battery minimum in 1 minute interval)
 
DQR ID: D160317.7    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2016-03-10 06:26:00 2016-03-11 22:37:00 Incorrect
2016-03-07 09:18:00 2016-03-08 07:21:00 Incorrect
Subject: OLI/GHG/M1 - Line pressure control failure
Affected Datastreams: oliaosghgM1.a1
Description When the pressure controller is not controlling pressure adequately, co2/ch4 data cannot be used
Measurements
  • pressure_control (Average line pressure controller control pressure)
  • ch4 (Methane volume mixing ratio)
  • cavity_pressure (Cavity pressure)
  • co2_dry (Carbon dioxide dry volume mixing ratio)
  • co2 (Carbon dioxide volume mixing ratio)
  • ch4_dry (Methane dry volume mixing ratio)
  • h2o_vapor (Water vapor volume percentage)
 
DQR ID: D160520.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2016-04-09 16:30:00 2016-04-09 18:30:00 Incorrect
2016-04-21 14:00:00 2016-04-21 15:45:00 Incorrect
2016-04-12 14:00:00 2016-04-12 15:00:00 Incorrect
2016-04-04 15:49:00 2016-04-04 17:00:00 Incorrect
2016-04-05 15:45:00 2016-04-05 16:45:00 Incorrect
2016-04-14 14:30:00 2016-04-14 15:30:00 Incorrect
2016-04-16 14:17:00 2016-04-16 14:21:00 Incorrect
2016-04-17 15:30:00 2016-04-17 16:15:00 Incorrect
2016-04-08 15:00:00 2016-04-08 16:00:00 Incorrect
2016-04-17 12:50:00 2016-04-17 13:40:00 Incorrect
2016-04-06 15:30:00 2016-04-06 18:00:00 Incorrect
2016-04-02 21:00:00 2016-04-02 23:59:00 Incorrect
2016-04-17 09:50:00 2016-04-17 10:10:00 Incorrect
2016-04-19 14:00:00 2016-04-19 15:00:00 Incorrect
2016-04-07 15:50:00 2016-04-07 17:00:00 Incorrect
2016-04-20 14:00:00 2016-04-20 16:00:00 Incorrect
Subject: OLI/GHG/M1 - Snow removal causing spikes
Affected Datastreams: oliaosghgM1.a1
Description CO2 spikes caused by the dozer clearing snow onsite
Measurements
  • co2_dry (Carbon dioxide dry volume mixing ratio)
  • co2 (Carbon dioxide volume mixing ratio)
 
DQR ID: D170420.9    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2017-04-11 13:09:00 2017-04-12 20:53:00 Missing
Subject: OLI/GHG/M1 - Site power outage
Affected Datastreams: oliaosghgM1.b0
Description Data is missing during this period, likely due to site power outage
Measurements
  • ch4_dry_std (Standard deviation of methane during 1 minute interval with instrument specific water correction)
  • etalon_temperature_avg (Average Picarro etalon temperature)
  • ch4_dry_slope_err (Error in slope of methane dry during 1 minute interval)
  • qc_co2_std (Quality check results on field: Standard deviation of carbon dioxide during 1 minute interval)
  • ch4_offset (Methane offset coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box)
  • qc_calibration_cylinder_2_pressure (Quality check results on field: Average cylinder pressure for span 2 calibration cylinder)
  • cavity_temperature_std (Standard deviation of Picarro cavity temperature)
  • h2o_std (Standard deviation of water during 1 minute interval)
  • ch4_dry_slope (Slope of dry methane during 1 minute interval)
  • qc_calibration_cylinder_2_line_pressure (Quality check results on field: Average line pressure for span 2 calibration cylinder)
  • co2_offset (Carbon dioxide offset coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • species (Species)
  • co2 (Carbon dioxide volume mixing ratio)
  • ch4_slope (Slope of methane during 1 minute interval)
  • qc_dry_purge_flow (Quality check results on field: Average air flow rate near dry air inlet for purge of nafion box)
  • qc_calibration_cylinder_3_pressure (Quality check results on field: Average cylinder pressure for target calibration cylinder)
  • qc_ch4_dry_std (Quality check results on field: Standard deviation of methane during 1 minute interval with instrument specific water correction)
  • qc_calibration_cylinder_1_line_pressure (Quality check results on field: Average line pressure for span 1 calibration cylinder)
  • front_fan_flow (Average air flow rate near front fan in pump box)
  • co2_dry_avg_corr (Carbon dioxide during 1 minute interval with instrument specific water correction, and calibration applied)
  • co2_dry_slope_err (Error in slope of dry carbon dioxide during 1 minute interval)
  • pressure_control (Average line pressure controller control pressure)
  • qc_cavity_temperature_std (Quality check results on field: Standard deviation of Picarro cavity temperature)
  • ch4_dry (Methane dry volume mixing ratio)
  • analyzer_temperature (Analyzer temperature)
  • calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder)
  • qc_calibration_cylinder_1_pressure (Quality check results on field: Average cylinder pressure for span 1 calibration cylinder)
  • ch4_slope_err (Error in slope of methane during 1 minute interval)
  • battery_minimum (Logger battery minimum in 1 minute interval)
  • co2_slope_err (Error in slope of carbon dioxide during 1 minute interval)
  • qc_outlet_valve_avg (Quality check results on field: Average outlet valve DAC value for Picarro cavity pressure control)
  • co2_dry_std (Standard deviation of carbon dioxide during 1 minute interval with instrument specific water correction)
  • qc_co2_dry_avg_corr (Quality check results on field: Carbon dioxide during 1 minute interval with instrument specific water correction, and calibration applied)
  • qc_pump_box_temperature (Quality check results on field: Average pump box temperature)
  • alt (Altitude above mean sea level)
  • rear_fan_flow (Average air flow rate near rear fan in pump box)
  • cavity_pressure_std (Standard deviation of Picarro cavity pressure)
  • base_time (Base time in Epoch)
  • qc_mp_valve_position (Quality check results on field: Average multi port valve position)
  • mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8))
  • warm_box_temperature_avg (Average Picarro warm box temperature)
  • qc_co2_dry_avg (Quality check results on field: Average carbon dioxide during 1 minute interval with instrument specific water correction)
  • qc_ch4_dry_avg_corr_err (Quality check results on field: Uncertainty in methane during 1 minute interval with instrument specific water correction)
  • warm_box_temperature (Warm box temperature)
  • line_pressure_tower_inlet (Average line pressure for tower sample)
  • time (Time offset from midnight)
  • co2_avg (Average carbon dioxide during 1 minute interval)
  • analyzer_temperature_std (Standard deviation of Picarro analyzer temperature)
  • calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder)
  • solenoid_valve (Value indicating which solenoid valve is currently used)
  • calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder)
  • ch4_std (Standard deviation of methane during 1 minute interval)
  • calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder)
  • cavity_pressure (Cavity pressure)
  • ch4_gain (Methane gain coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • qc_rear_fan_flow (Quality check results on field: Average air flow rate near rear fan in pump box)
  • qc_chiller_temperature (Quality check results on field: Average chiller temperature during 1 minute interval)
  • qc_exhaust_flow (Quality check results on field: Average line exhaust flow rate for tower sample)
  • ch4_avg (Average methane during 1 minute interval)
  • ch4_dry_avg_corr (Methane during 1 minute interval with instrument specific water correction, and calibration applied)
  • exhaust_flow (Average line exhaust flow rate for tower sample)
  • cavity_temperature (Picarro optical cavity temperature)
  • h2o_vapor (Water vapor volume percentage)
  • qc_h2o_std (Quality check results on field: Standard deviation of water during 1 minute interval)
  • nafion_box_temperature (Average nafion box temperature)
  • mp_valve_position (Average multi port valve position)
  • outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)
  • qc_battery_minimum (Quality check results on field: Logger battery minimum in 1 minute interval)
  • qc_co2_dry_avg_corr_err (Quality check results on field: Uncertainty in carbon dioxide during 1 minute interval with instrument specific water correction)
  • qc_nafion_purge_pressure (Quality check results on field: Average Nafion vacuum purge pressure)
  • ch4_dry_avg (Average methane during 1 minute interval with instrument specific water correction)
  • cavity_pressure_avg (Average Picarro cavity pressure)
  • outlet_valve_std (Standard deviation of outlet valve DAC value for Picarro cavity pressure control)
  • qc_analyzer_temperature_avg (Quality check results on field: Average Picarro analyzer temperature)
  • dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box)
  • qc_liquid_alarm_tower_inlet (Quality check results on field: Average liquid alarm state for tower sample)
  • lat (North latitude)
  • instrument_status (Instrument status indicators)
  • qc_ch4_std (Quality check results on field: Standard deviation of methane during 1 minute interval)
  • co2_std (Standard deviation of carbon dioxide during 1 minute interval)
  • co2_dry_avg (Average carbon dioxide during 1 minute interval with instrument specific water correction)
  • calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder)
  • qc_ch4_avg (Quality check results on field: Average methane during 1 minute interval)
  • time_bounds (Time cell bounds)
  • etalon_temperature (Etalon temperature)
  • etalon_temperature_std (Standard deviation of Picarro etalon temperature)
  • qc_etalon_temperature_std (Quality check results on field: Standard deviation of Picarro etalon temperature)
  • co2_dry (Carbon dioxide dry volume mixing ratio)
  • chiller_temperature (Average chiller temperature during 1 minute interval)
  • qc_nafion_box_temperature (Quality check results on field: Average nafion box temperature)
  • h2o_slope (Slope of water during 1 minute interval)
  • lon (East longitude)
  • qc_h2o_avg (Quality check results on field: Average water during 1 minute interval)
  • qc_cavity_pressure_avg (Quality check results on field: Average Picarro cavity pressure)
  • qc_outlet_valve_std (Quality check results on field: Standard deviation of outlet valve DAC value for Picarro cavity pressure control)
  • calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder)
  • qc_ch4_dry_avg_corr (Quality check results on field: Methane during 1 minute interval with instrument specific water correction, and calibration applied)
  • qc_dry_purge_cylinder_pressure (Quality check results on field: Average cylinder pressure for dry air cylinder for purge of nafion box)
  • qc_warm_box_temperature_std (Quality check results on field: Standard deviation of Picarro warm box temperature)
  • qc_front_fan_flow (Quality check results on field: Average air flow rate near front fan in pump box)
  • dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box)
  • qc_warm_box_temperature_avg (Quality check results on field: Average Picarro warm box temperature)
  • nafion_purge_pressure (Average Nafion vacuum purge pressure)
  • ch4_dry_avg_corr_err (Uncertainty in methane during 1 minute interval with instrument specific water correction)
  • qc_co2_avg (Quality check results on field: Average carbon dioxide during 1 minute interval)
  • qc_pressure_control (Quality check results on field: Average line pressure controller control pressure)
  • co2_gain_err (Uncertainty in carbon dioxide gain coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • qc_etalon_temperature_avg (Quality check results on field: Average Picarro etalon temperature)
  • outlet_valve_avg (Average outlet valve DAC value for Picarro cavity pressure control)
  • pump_box_temperature (Average pump box temperature)
  • liquid_alarm_tower_inlet (Average liquid alarm state for tower sample)
  • h2o_slope_err (Error in slope of water during 1 minute interval)
  • qc_line_pressure_tower_inlet (Quality check results on field: Average line pressure for tower sample)
  • ch4 (Methane volume mixing ratio)
  • qc_cavity_pressure_std (Quality check results on field: Standard deviation of Picarro cavity pressure)
  • qc_analyzer_temperature_std (Quality check results on field: Standard deviation of Picarro analyzer temperature)
  • ch4_gain_err (Uncertainty in methane gain coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • qc_dry_purge_line_pressure (Quality check results on field: Average line pressure for dry air cylinder for purge of nafion box)
  • co2_gain (Carbon dioxide gain coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • co2_slope (Slope of carbon dioxide during 1 minute interval)
  • warm_box_temperature_std (Standard deviation of Picarro warm box temperature)
  • qc_co2_dry_std (Quality check results on field: Standard deviation of carbon dioxide during 1 minute interval with instrument specific water correction)
  • qc_calibration_cylinder_3_line_pressure (Quality check results on field: Average line pressure for target calibration cylinder)
  • qc_ch4_dry_avg (Quality check results on field: Average methane during 1 minute interval with instrument specific water correction)
  • qc_cavity_temperature_avg (Quality check results on field: Average Picarro cavity temperature)
  • alarm_status (Alarm status to be interpreted as a binary number.)
  • cavity_temperature_avg (Average Picarro cavity temperature)
  • analyzer_temperature_avg (Average Picarro analyzer temperature)
  • co2_dry_slope (Slope of dry carbon dioxide during 1 minute interval)
  • ch4_offset_err (Uncertainty in methane offset coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • time_offset (Time offset from base_time)
  • co2_offset_err (Uncertainty in carbon dioxide offset coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • h2o_avg (Average water during 1 minute interval)
  • co2_dry_avg_corr_err (Uncertainty in carbon dioxide during 1 minute interval with instrument specific water correction)
 
DQR ID: D160408.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2016-03-25 17:00:00 2016-04-08 21:00:00 Incorrect
Subject: OLI/GHG/M1 - Pressure controller failure
Affected Datastreams: oliaosghgM1.a1
Description Pressure controller failure causes CO2, CH4, and H2O data to be unusable
Measurements
  • ch4 (Methane volume mixing ratio)
  • pressure_control (Average line pressure controller control pressure)
  • cavity_pressure (Cavity pressure)
  • co2_dry (Carbon dioxide dry volume mixing ratio)
  • co2 (Carbon dioxide volume mixing ratio)
  • ch4_dry (Methane dry volume mixing ratio)
  • h2o_vapor (Water vapor volume percentage)
  • outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)
 
DQR ID: D170704.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2017-06-13 17:00:00 2017-06-14 19:00:00 Incorrect
Subject: OLI/GHG/M1 - System maintenance and calibration testing
Affected Datastreams: oliaosghgM1.b0
Description Data during this period was used for diagnostics for testing the calibration and preventative maintenance on components.
Measurements
  • co2_slope_err (Error in slope of carbon dioxide during 1 minute interval)
  • ch4_dry_avg_corr (Methane during 1 minute interval with instrument specific water correction, and calibration applied)
  • nafion_purge_pressure (Average Nafion vacuum purge pressure)
  • ch4_avg (Average methane during 1 minute interval)
  • exhaust_flow (Average line exhaust flow rate for tower sample)
  • co2_dry_std (Standard deviation of carbon dioxide during 1 minute interval with instrument specific water correction)
  • cavity_temperature (Picarro optical cavity temperature)
  • ch4_dry_std (Standard deviation of methane during 1 minute interval with instrument specific water correction)
  • ch4_dry_avg_corr_err (Uncertainty in methane during 1 minute interval with instrument specific water correction)
  • h2o_vapor (Water vapor volume percentage)
  • etalon_temperature_avg (Average Picarro etalon temperature)
  • nafion_box_temperature (Average nafion box temperature)
  • ch4_dry_slope_err (Error in slope of methane dry during 1 minute interval)
  • ch4_offset (Methane offset coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • rear_fan_flow (Average air flow rate near rear fan in pump box)
  • mp_valve_position (Average multi port valve position)
  • outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)
  • co2_gain_err (Uncertainty in carbon dioxide gain coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box)
  • ch4_dry_avg (Average methane during 1 minute interval with instrument specific water correction)
  • cavity_pressure_avg (Average Picarro cavity pressure)
  • cavity_pressure_std (Standard deviation of Picarro cavity pressure)
  • outlet_valve_std (Standard deviation of outlet valve DAC value for Picarro cavity pressure control)
  • cavity_temperature_std (Standard deviation of Picarro cavity temperature)
  • outlet_valve_avg (Average outlet valve DAC value for Picarro cavity pressure control)
  • h2o_std (Standard deviation of water during 1 minute interval)
  • dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box)
  • ch4_dry_slope (Slope of dry methane during 1 minute interval)
  • pump_box_temperature (Average pump box temperature)
  • mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8))
  • warm_box_temperature_avg (Average Picarro warm box temperature)
  • instrument_status (Instrument status indicators)
  • liquid_alarm_tower_inlet (Average liquid alarm state for tower sample)
  • warm_box_temperature (Warm box temperature)
  • line_pressure_tower_inlet (Average line pressure for tower sample)
  • h2o_slope_err (Error in slope of water during 1 minute interval)
  • co2_offset (Carbon dioxide offset coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • co2_dry_avg (Average carbon dioxide during 1 minute interval with instrument specific water correction)
  • calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder)
  • co2_std (Standard deviation of carbon dioxide during 1 minute interval)
  • etalon_temperature (Etalon temperature)
  • ch4 (Methane volume mixing ratio)
  • species (Species)
  • etalon_temperature_std (Standard deviation of Picarro etalon temperature)
  • ch4_gain_err (Uncertainty in methane gain coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • co2_dry (Carbon dioxide dry volume mixing ratio)
  • co2 (Carbon dioxide volume mixing ratio)
  • ch4_slope (Slope of methane during 1 minute interval)
  • chiller_temperature (Average chiller temperature during 1 minute interval)
  • co2_avg (Average carbon dioxide during 1 minute interval)
  • co2_gain (Carbon dioxide gain coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • analyzer_temperature_std (Standard deviation of Picarro analyzer temperature)
  • co2_slope (Slope of carbon dioxide during 1 minute interval)
  • warm_box_temperature_std (Standard deviation of Picarro warm box temperature)
  • calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder)
  • h2o_slope (Slope of water during 1 minute interval)
  • solenoid_valve (Value indicating which solenoid valve is currently used)
  • calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder)
  • ch4_std (Standard deviation of methane during 1 minute interval)
  • calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder)
  • calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder)
  • co2_dry_avg_corr (Carbon dioxide during 1 minute interval with instrument specific water correction, and calibration applied)
  • co2_dry_slope_err (Error in slope of dry carbon dioxide during 1 minute interval)
  • pressure_control (Average line pressure controller control pressure)
  • front_fan_flow (Average air flow rate near front fan in pump box)
  • cavity_pressure (Cavity pressure)
  • ch4_gain (Methane gain coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • alarm_status (Alarm status to be interpreted as a binary number.)
  • cavity_temperature_avg (Average Picarro cavity temperature)
  • ch4_dry (Methane dry volume mixing ratio)
  • analyzer_temperature (Analyzer temperature)
  • analyzer_temperature_avg (Average Picarro analyzer temperature)
  • co2_dry_slope (Slope of dry carbon dioxide during 1 minute interval)
  • calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder)
  • ch4_offset_err (Uncertainty in methane offset coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • ch4_slope_err (Error in slope of methane during 1 minute interval)
  • dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box)
  • battery_minimum (Logger battery minimum in 1 minute interval)
  • co2_offset_err (Uncertainty in carbon dioxide offset coefficients calculated by measurements of calibration cylinders, linearly interpolated)
  • h2o_avg (Average water during 1 minute interval)
  • co2_dry_avg_corr_err (Uncertainty in carbon dioxide during 1 minute interval with instrument specific water correction)
 
DQR ID: D170320.6    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2017-03-06 18:47:01 2017-03-09 23:35:58 Note
Subject: OLI/ALL/M1 - Power Outage
Affected Datastreams: oliaosnephwet1mM1.b1
Description OLI suffered from a prolonged power outage. The instruments were brought back up over the course of 3/9 so the end date will be different for each instrument. Any problems with the instruments after being brought back online will be covered by separate DQRs.
Measurements
  • nafion_purge_pressure (Average Nafion vacuum purge pressure)
  • exhaust_flow (Average line exhaust flow rate for tower sample)
  • cavity_temperature (Picarro optical cavity temperature)
  • h2o_vapor (Water vapor volume percentage)
  • nafion_box_temperature (Average nafion box temperature)
  • alt (Altitude above mean sea level)
  • mp_valve_position (Average multi port valve position)
  • rear_fan_flow (Average air flow rate near rear fan in pump box)
  • dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box)
  • outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)
  • dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box)
  • base_time (Base time in Epoch)
  • mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8))
  • pump_box_temperature (Average pump box temperature)
  • lat (North latitude)
  • instrument_status (Instrument status indicators)
  • liquid_alarm_tower_inlet (Average liquid alarm state for tower sample)
  • warm_box_temperature (Warm box temperature)
  • line_pressure_tower_inlet (Average line pressure for tower sample)
  • calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder)
  • time_bounds (Time cell bounds)
  • time (Time offset from midnight)
  • etalon_temperature (Etalon temperature)
  • ch4 (Methane volume mixing ratio)
  • species (Species)
  • co2_dry (Carbon dioxide dry volume mixing ratio)
  • co2 (Carbon dioxide volume mixing ratio)
  • chiller_temperature (Average chiller temperature during 1 minute interval)
  • lon (East longitude)
  • calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder)
  • solenoid_valve (Value indicating which solenoid valve is currently used)
  • calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder)
  • front_fan_flow (Average air flow rate near front fan in pump box)
  • calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder)
  • calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder)
  • pressure_control (Average line pressure controller control pressure)
  • cavity_pressure (Cavity pressure)
  • ch4_dry (Methane dry volume mixing ratio)
  • alarm_status (Alarm status to be interpreted as a binary number.)
  • analyzer_temperature (Analyzer temperature)
  • calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder)
  • time_offset (Time offset from base_time)
  • dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box)
  • battery_minimum (Logger battery minimum in 1 minute interval)
 
DQR ID: D161014.7    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2015-05-01 00:00:00 2016-09-15 23:59:00 Note
Subject: OLI/GHG/M1 - Reprocessed and Corrected: addition of height global attribute
Affected Datastreams: oliaosghgauxM1.a1
Description DATA REPROCESSED and CORRECTED: The mentor has requested the addition of a 'height' global attribute to record the inlet height. The OLI instrument was recently relocated inside the AOS container (on or about August 12, 2016). So, prior to that date, the height was 6.2179 meters and after that date the height became 10 meters. There will also be some minor changes in the oliaosghgauxM1.a1 data. NaN values have been replaced by values of -9999. The data were archived in May 2017. Please retrieve the reprocessed data for use in your analysis. ORIGINAL DQR CATEGORY: Transparent (Does not affect quality) REPROCESSED and CORRECTED DATA ARCHIVED:2017-05 REPROCESS IDENTIFICATION NUMBER: RID 1508 --------------------------------------------------- --- ORIGINAL DQR DESCRIPTION --- --------------------------------------------------- The mentor has requested the addition of a 'height' global attribute to record the inlet height. The OLI instrument was recently relocated inside the AOS container (on or about August 12, 2016). So, prior to that date, the height was 6.2179 meters and after that date the height became 10 meters. Both the aosghg.a1 and aosghgaux.a1 datastreams will be updated to add this new global attribute. The mentor has requested that the entire dataset be reprocessed to make this addition to the global attributes. We will be releasing dowstream aosghg.b0 and aosghg.b1 processing that will incorporate this new global attribute from the a1 input datastreams.
Measurements
  • nafion_purge_pressure (Average Nafion vacuum purge pressure)
  • exhaust_flow (Average line exhaust flow rate for tower sample)
  • cavity_temperature (Picarro optical cavity temperature)
  • h2o_vapor (Water vapor volume percentage)
  • nafion_box_temperature (Average nafion box temperature)
  • rear_fan_flow (Average air flow rate near rear fan in pump box)
  • mp_valve_position (Average multi port valve position)
  • dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box)
  • outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)
  • dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box)
  • mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8))
  • pump_box_temperature (Average pump box temperature)
  • instrument_status (Instrument status indicators)
  • liquid_alarm_tower_inlet (Average liquid alarm state for tower sample)
  • warm_box_temperature (Warm box temperature)
  • line_pressure_tower_inlet (Average line pressure for tower sample)
  • calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder)
  • etalon_temperature (Etalon temperature)
  • ch4 (Methane volume mixing ratio)
  • species (Species)
  • co2_dry (Carbon dioxide dry volume mixing ratio)
  • co2 (Carbon dioxide volume mixing ratio)
  • chiller_temperature (Average chiller temperature during 1 minute interval)
  • calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder)
  • solenoid_valve (Value indicating which solenoid valve is currently used)
  • calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder)
  • front_fan_flow (Average air flow rate near front fan in pump box)
  • calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder)
  • calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder)
  • pressure_control (Average line pressure controller control pressure)
  • cavity_pressure (Cavity pressure)
  • alarm_status (Alarm status to be interpreted as a binary number.)
  • ch4_dry (Methane dry volume mixing ratio)
  • analyzer_temperature (Analyzer temperature)
  • calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder)
  • dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box)
  • battery_minimum (Logger battery minimum in 1 minute interval)