Data Quality Report

Data Quality Report for Order ID: 187298
User ID: nojgaardj1 Date completed: 2017-08-17

All DQRs

DQR ID	Subject	Affected Data Streams	Data Quality Metric
D160213.1	OLI/GHG/M1 - Chiller failure	oliaosghgauxM1.a1	Incorrect
D160330.1	OLI/GHG/M1 - Reprocessed and Corrected:Incorrect data type	oliaosghgM1.a1	Note
D170217.1	OLI/GHG/M1 - Analyzer valve failure	oliaosghgM1.a1	Incorrect
D161014.7	OLI/GHG/M1 - Reprocessed and Corrected: addition of height global attribute	oliaosghgauxM1.a1	Note
D170320.6	OLI/ALL/M1 - Power Outage	oliaosnephwet1mM1.b1	Note
D160408.2	OLI/GHG/M1 - Pressure controller failure	oliaosghgM1.a1	Incorrect
D160317.7	OLI/GHG/M1 - Line pressure control failure	oliaosghgM1.a1	Incorrect
D170420.9	OLI/GHG/M1 - Site power outage	oliaosghgM1.b0	Missing
D170704.1	OLI/GHG/M1 - System maintenance and calibration testing	oliaosghgM1.b0	Incorrect
D160520.1	OLI/GHG/M1 - Snow removal causing spikes	oliaosghgM1.a1	Incorrect
D160114.7	OLI/GHG/M1 - Instrument setup probationary period	oliaosghgM1.a1	Incorrect
D160213.2	OLI/GHG/M1 - Tower pump failure	oliaosghgM1.a1	Suspect

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	calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder) front_fan_flow (Average air flow rate near front fan in pump box) warm_box_temperature (Warm box temperature) analyzer_temperature (Analyzer temperature) ch4_dry (Methane dry volume mixing ratio) nafion_purge_pressure (Average Nafion vacuum purge pressure) co2 (Carbon dioxide volume mixing ratio) calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder) cavity_pressure (Cavity pressure) instrument_status (Instrument status indicators) dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box) chiller_temperature (Average chiller temperature during 1 minute interval) etalon_temperature (Etalon temperature) calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder) alarm_status (Alarm status to be interpreted as a binary number.) ch4 (Methane volume mixing ratio) line_pressure_tower_inlet (Average line pressure for tower sample) pump_box_temperature (Average pump box temperature) mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8)) calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder) battery_minimum (Logger battery minimum in 1 minute interval) dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box) cavity_temperature (Picarro optical cavity temperature) pressure_control (Average line pressure controller control pressure) dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box) co2_dry (Carbon dioxide dry volume mixing ratio) solenoid_valve (Value indicating which solenoid valve is currently used) calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder) calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder) exhaust_flow (Average line exhaust flow rate for tower sample) species (Species) nafion_box_temperature (Average nafion box temperature) h2o_vapor (Water vapor volume percentage) rear_fan_flow (Average air flow rate near rear fan in pump box) liquid_alarm_tower_inlet (Average liquid alarm state for tower sample) mp_valve_position (Average multi port valve position) outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)

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 (Value indicates state of the rotary valco valve (range 1 to 8)) mp_valve_position (Average multi port valve position)

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	cavity_pressure (Cavity pressure) instrument_status (Instrument status indicators) etalon_temperature (Etalon temperature) species (Species) alarm_status (Alarm status to be interpreted as a binary number.) ch4 (Methane volume mixing ratio) cavity_temperature (Picarro optical cavity temperature) warm_box_temperature (Warm box temperature) analyzer_temperature (Analyzer temperature) mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8)) solenoid_valve (Value indicating which solenoid valve is currently used) co2_dry (Carbon dioxide dry volume mixing ratio) h2o_vapor (Water vapor volume percentage) ch4_dry (Methane dry volume mixing ratio) co2 (Carbon dioxide volume mixing ratio) mp_valve_position (Average multi port valve position) outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)

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	calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder) front_fan_flow (Average air flow rate near front fan in pump box) warm_box_temperature (Warm box temperature) analyzer_temperature (Analyzer temperature) ch4_dry (Methane dry volume mixing ratio) nafion_purge_pressure (Average Nafion vacuum purge pressure) co2 (Carbon dioxide volume mixing ratio) calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder) cavity_pressure (Cavity pressure) dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box) instrument_status (Instrument status indicators) chiller_temperature (Average chiller temperature during 1 minute interval) calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder) etalon_temperature (Etalon temperature) alarm_status (Alarm status to be interpreted as a binary number.) ch4 (Methane volume mixing ratio) line_pressure_tower_inlet (Average line pressure for tower sample) pump_box_temperature (Average pump box temperature) mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8)) calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder) battery_minimum (Logger battery minimum in 1 minute interval) dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box) cavity_temperature (Picarro optical cavity temperature) pressure_control (Average line pressure controller control pressure) dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box) co2_dry (Carbon dioxide dry volume mixing ratio) calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder) solenoid_valve (Value indicating which solenoid valve is currently used) exhaust_flow (Average line exhaust flow rate for tower sample) calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder) species (Species) nafion_box_temperature (Average nafion box temperature) h2o_vapor (Water vapor volume percentage) rear_fan_flow (Average air flow rate near rear fan in pump box) liquid_alarm_tower_inlet (Average liquid alarm state for tower sample) mp_valve_position (Average multi port valve position) outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)

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	calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder) alt (Altitude above mean sea level) base_time (Base time in Epoch) front_fan_flow (Average air flow rate near front fan in pump box) lat (North latitude) warm_box_temperature (Warm box temperature) analyzer_temperature (Analyzer temperature) ch4_dry (Methane dry volume mixing ratio) time_bounds (Time cell bounds) nafion_purge_pressure (Average Nafion vacuum purge pressure) co2 (Carbon dioxide volume mixing ratio) calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder) lon (East longitude) chiller_temperature (Average chiller temperature during 1 minute interval) cavity_pressure (Cavity pressure) dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box) instrument_status (Instrument status indicators) calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder) etalon_temperature (Etalon temperature) alarm_status (Alarm status to be interpreted as a binary number.) ch4 (Methane volume mixing ratio) line_pressure_tower_inlet (Average line pressure for tower sample) pump_box_temperature (Average pump box temperature) mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8)) calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder) time (Time offset from midnight) battery_minimum (Logger battery minimum in 1 minute interval) dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box) cavity_temperature (Picarro optical cavity temperature) pressure_control (Average line pressure controller control pressure) dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box) co2_dry (Carbon dioxide dry volume mixing ratio) solenoid_valve (Value indicating which solenoid valve is currently used) calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder) exhaust_flow (Average line exhaust flow rate for tower sample) calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder) species (Species) nafion_box_temperature (Average nafion box temperature) time_offset (Time offset from base_time) h2o_vapor (Water vapor volume percentage) rear_fan_flow (Average air flow rate near rear fan in pump box) liquid_alarm_tower_inlet (Average liquid alarm state for tower sample) mp_valve_position (Average multi port valve position) outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)

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	cavity_pressure (Cavity pressure) ch4 (Methane volume mixing ratio) pressure_control (Average line pressure controller control pressure) co2_dry (Carbon dioxide dry volume mixing ratio) ch4_dry (Methane dry volume mixing ratio) h2o_vapor (Water vapor volume percentage) co2 (Carbon dioxide volume mixing ratio) outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)

DQR ID: D160317.7 (Back to Top)

Start Date	Start Time	End Date	End Time	Data Quality Metric
2016-03-07	09:18:00	2016-03-08	07:21:00	Incorrect
2016-03-10	06:26:00	2016-03-11	22:37:00	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	cavity_pressure (Cavity pressure) ch4 (Methane volume mixing ratio) pressure_control (Average line pressure controller control pressure) co2_dry (Carbon dioxide dry volume mixing ratio) ch4_dry (Methane dry volume mixing ratio) h2o_vapor (Water vapor volume percentage) 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	qc_ch4_std (Quality check results on field: Standard deviation of methane during 1 minute interval) alt (Altitude above mean sea level) ch4_gain_err (Uncertainty in methane gain coefficients calculated by measurements of calibration cylinders, linearly interpolated) qc_line_pressure_tower_inlet (Quality check results on field: Average line pressure for tower sample) qc_calibration_cylinder_1_pressure (Quality check results on field: Average cylinder pressure for span 1 calibration cylinder) ch4_dry (Methane dry volume mixing ratio) qc_co2_avg (Quality check results on field: Average carbon dioxide during 1 minute interval) co2_dry_avg_corr (Carbon dioxide during 1 minute interval with instrument specific water correction, and calibration applied) chiller_temperature (Average chiller temperature during 1 minute interval) alarm_status (Alarm status to be interpreted as a binary number.) qc_calibration_cylinder_3_pressure (Quality check results on field: Average cylinder pressure for target calibration cylinder) qc_exhaust_flow (Quality check results on field: Average line exhaust flow rate for tower sample) h2o_slope_err (Error in slope of water during 1 minute interval) qc_analyzer_temperature_avg (Quality check results on field: Average Picarro analyzer temperature) cavity_pressure_avg (Average Picarro cavity pressure) time (Time offset from midnight) qc_calibration_cylinder_1_line_pressure (Quality check results on field: Average line pressure for span 1 calibration cylinder) qc_ch4_avg (Quality check results on field: Average methane during 1 minute interval) species (Species) qc_pressure_control (Quality check results on field: Average line pressure controller control pressure) qc_ch4_dry_std (Quality check results on field: Standard deviation of methane during 1 minute interval with instrument specific water correction) qc_etalon_temperature_std (Quality check results on field: Standard deviation of Picarro etalon temperature) h2o_vapor (Water vapor volume percentage) warm_box_temperature_std (Standard deviation of Picarro warm box temperature) mp_valve_position (Average multi port valve position) calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder) etalon_temperature_std (Standard deviation of Picarro etalon temperature) qc_cavity_temperature_avg (Quality check results on field: Average Picarro cavity temperature) qc_outlet_valve_std (Quality check results on field: Standard deviation of outlet valve DAC value for Picarro cavity pressure control) analyzer_temperature_avg (Average Picarro analyzer temperature) qc_ch4_dry_avg (Quality check results on field: Average methane during 1 minute interval with instrument specific water correction) qc_mp_valve_position (Quality check results on field: Average multi port valve position) qc_warm_box_temperature_std (Quality check results on field: Standard deviation of Picarro warm box temperature) outlet_valve_std (Standard deviation of outlet valve DAC value for Picarro cavity pressure control) time_bounds (Time cell bounds) co2 (Carbon dioxide volume mixing ratio) calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder) lon (East longitude) cavity_pressure (Cavity pressure) qc_co2_std (Quality check results on field: Standard deviation of carbon dioxide during 1 minute interval) qc_rear_fan_flow (Quality check results on field: Average air flow rate near rear fan in pump box) qc_front_fan_flow (Quality check results on field: Average air flow rate near front fan in pump box) ch4 (Methane volume mixing ratio) co2_dry_avg_corr_err (Uncertainty in carbon dioxide during 1 minute interval with instrument specific water correction) co2_dry_slope_err (Error in slope of dry carbon dioxide during 1 minute interval) dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box) qc_etalon_temperature_avg (Quality check results on field: Average Picarro etalon temperature) qc_cavity_pressure_avg (Quality check results on field: Average Picarro cavity pressure) co2_avg (Average carbon dioxide during 1 minute interval) solenoid_valve (Value indicating which solenoid valve is currently used) co2_dry (Carbon dioxide dry volume mixing ratio) qc_co2_dry_std (Quality check results on field: Standard deviation of carbon dioxide during 1 minute interval with instrument specific water correction) exhaust_flow (Average line exhaust flow rate for tower sample) qc_calibration_cylinder_2_line_pressure (Quality check results on field: Average line pressure for span 2 calibration cylinder) ch4_offset (Methane offset coefficients calculated by measurements of calibration cylinders, linearly interpolated) liquid_alarm_tower_inlet (Average liquid alarm state for tower sample) etalon_temperature_avg (Average Picarro etalon temperature) outlet_valve (DAC (digital to analog converter) value for outlet proportional valve) co2_std (Standard deviation of carbon dioxide during 1 minute interval) front_fan_flow (Average air flow rate near front fan in pump box) qc_ch4_dry_avg_corr (Quality check results on field: Methane during 1 minute interval with instrument specific water correction, and calibration applied) co2_gain (Carbon dioxide gain coefficients calculated by measurements of calibration cylinders, linearly interpolated) warm_box_temperature (Warm box temperature) analyzer_temperature (Analyzer temperature) qc_calibration_cylinder_2_pressure (Quality check results on field: Average cylinder pressure for span 2 calibration cylinder) ch4_dry_slope_err (Error in slope of methane dry during 1 minute interval) co2_gain_err (Uncertainty in carbon dioxide gain coefficients calculated by measurements of calibration cylinders, linearly interpolated) qc_warm_box_temperature_avg (Quality check results on field: Average Picarro warm box temperature) qc_nafion_box_temperature (Quality check results on field: Average nafion box temperature) calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder) etalon_temperature (Etalon temperature) qc_dry_purge_line_pressure (Quality check results on field: Average line pressure for dry air cylinder for purge of nafion box) line_pressure_tower_inlet (Average line pressure for tower sample) qc_liquid_alarm_tower_inlet (Quality check results on field: Average liquid alarm state for tower sample) mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8)) ch4_slope_err (Error in slope of methane during 1 minute interval) qc_nafion_purge_pressure (Quality check results on field: Average Nafion vacuum purge pressure) cavity_pressure_std (Standard deviation of Picarro cavity pressure) qc_co2_dry_avg (Quality check results on field: Average carbon dioxide during 1 minute interval with instrument specific water correction) calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder) qc_ch4_dry_avg_corr_err (Quality check results on field: Uncertainty in methane during 1 minute interval with instrument specific water correction) qc_cavity_pressure_std (Quality check results on field: Standard deviation of Picarro cavity pressure) battery_minimum (Logger battery minimum in 1 minute interval) co2_slope (Slope of carbon dioxide during 1 minute interval) cavity_temperature (Picarro optical cavity temperature) pressure_control (Average line pressure controller control pressure) 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_h2o_avg (Quality check results on field: Average water during 1 minute interval) qc_chiller_temperature (Quality check results on field: Average chiller temperature during 1 minute interval) ch4_avg (Average methane during 1 minute interval) ch4_slope (Slope of methane during 1 minute interval) qc_analyzer_temperature_std (Quality check results on field: Standard deviation of Picarro analyzer temperature) qc_co2_dry_avg_corr_err (Quality check results on field: Uncertainty in carbon dioxide during 1 minute interval with instrument specific water correction) ch4_dry_avg (Average methane during 1 minute interval with instrument specific water correction) analyzer_temperature_std (Standard deviation of Picarro analyzer temperature) cavity_temperature_avg (Average Picarro cavity temperature) co2_offset (Carbon dioxide offset coefficients calculated by measurements of calibration cylinders, linearly interpolated) co2_dry_slope (Slope of dry carbon dioxide during 1 minute interval) nafion_box_temperature (Average nafion box temperature) time_offset (Time offset from base_time) rear_fan_flow (Average air flow rate near rear fan in pump box) co2_offset_err (Uncertainty in carbon dioxide offset coefficients calculated by measurements of calibration cylinders, linearly interpolated) base_time (Base time in Epoch) warm_box_temperature_avg (Average Picarro warm box temperature) h2o_avg (Average water during 1 minute interval) lat (North latitude) h2o_slope (Slope of water during 1 minute interval) ch4_dry_avg_corr (Methane during 1 minute interval with instrument specific water correction, and calibration applied) ch4_dry_avg_corr_err (Uncertainty in methane during 1 minute interval with instrument specific water correction) co2_slope_err (Error in slope of carbon dioxide during 1 minute interval) ch4_std (Standard deviation of methane during 1 minute interval) h2o_std (Standard deviation of water during 1 minute interval) nafion_purge_pressure (Average Nafion vacuum purge pressure) qc_dry_purge_flow (Quality check results on field: Average air flow rate near dry air inlet for purge of nafion box) co2_dry_std (Standard deviation of carbon dioxide during 1 minute interval with instrument specific water correction) dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box) instrument_status (Instrument status indicators) pump_box_temperature (Average pump box temperature) ch4_gain (Methane gain coefficients calculated by measurements of calibration cylinders, linearly interpolated) qc_calibration_cylinder_3_line_pressure (Quality check results on field: Average line pressure for target calibration cylinder) qc_cavity_temperature_std (Quality check results on field: Standard deviation of Picarro cavity temperature) cavity_temperature_std (Standard deviation of Picarro cavity temperature) outlet_valve_avg (Average outlet valve DAC value for Picarro cavity pressure control) co2_dry_avg (Average carbon dioxide during 1 minute interval with instrument specific water correction) dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box) calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder) calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder) qc_dry_purge_cylinder_pressure (Quality check results on field: Average cylinder pressure for dry air cylinder for purge of nafion box) qc_h2o_std (Quality check results on field: Standard deviation of water during 1 minute interval) ch4_dry_std (Standard deviation of methane during 1 minute interval with instrument specific water correction) ch4_dry_slope (Slope of dry methane during 1 minute interval) qc_outlet_valve_avg (Quality check results on field: Average outlet valve DAC value for Picarro cavity pressure control) qc_battery_minimum (Quality check results on field: Logger battery minimum in 1 minute interval) qc_pump_box_temperature (Quality check results on field: Average pump box temperature) ch4_offset_err (Uncertainty in methane offset coefficients calculated by measurements of calibration cylinders, linearly interpolated)

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	calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder) etalon_temperature_std (Standard deviation of Picarro etalon temperature) co2_std (Standard deviation of carbon dioxide during 1 minute interval) co2_offset_err (Uncertainty in carbon dioxide offset coefficients calculated by measurements of calibration cylinders, linearly interpolated) analyzer_temperature_avg (Average Picarro analyzer temperature) h2o_slope (Slope of water during 1 minute interval) co2_gain (Carbon dioxide gain coefficients calculated by measurements of calibration cylinders, linearly interpolated) warm_box_temperature_avg (Average Picarro warm box temperature) ch4_gain_err (Uncertainty in methane gain coefficients calculated by measurements of calibration cylinders, linearly interpolated) warm_box_temperature (Warm box temperature) ch4_dry_avg_corr_err (Uncertainty in methane during 1 minute interval with instrument specific water correction) analyzer_temperature (Analyzer temperature) ch4_dry_avg_corr (Methane during 1 minute interval with instrument specific water correction, and calibration applied) outlet_valve_std (Standard deviation of outlet valve DAC value for Picarro cavity pressure control) co2_slope_err (Error in slope of carbon dioxide during 1 minute interval) ch4_std (Standard deviation of methane during 1 minute interval) ch4_dry (Methane dry volume mixing ratio) h2o_std (Standard deviation of water during 1 minute interval) nafion_purge_pressure (Average Nafion vacuum purge pressure) h2o_avg (Average water during 1 minute interval) co2 (Carbon dioxide volume mixing ratio) ch4_dry_slope_err (Error in slope of methane dry during 1 minute interval) co2_dry_avg_corr (Carbon dioxide during 1 minute interval with instrument specific water correction, and calibration applied) co2_gain_err (Uncertainty in carbon dioxide gain coefficients calculated by measurements of calibration cylinders, linearly interpolated) cavity_pressure (Cavity pressure) instrument_status (Instrument status indicators) dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box) calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder) co2_dry_std (Standard deviation of carbon dioxide during 1 minute interval with instrument specific water correction) mp_valve_position (Average multi port valve position) calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder) alarm_status (Alarm status to be interpreted as a binary number.) etalon_temperature (Etalon temperature) chiller_temperature (Average chiller temperature during 1 minute interval) line_pressure_tower_inlet (Average line pressure for tower sample) ch4 (Methane volume mixing ratio) pump_box_temperature (Average pump box temperature) mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8)) ch4_slope_err (Error in slope of methane during 1 minute interval) cavity_pressure_std (Standard deviation of Picarro cavity pressure) co2_dry_avg_corr_err (Uncertainty in carbon dioxide during 1 minute interval with instrument specific water correction) h2o_slope_err (Error in slope of water during 1 minute interval) calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder) cavity_pressure_avg (Average Picarro cavity pressure) ch4_gain (Methane gain coefficients calculated by measurements of calibration cylinders, linearly interpolated) battery_minimum (Logger battery minimum in 1 minute interval) co2_dry_slope_err (Error in slope of dry carbon dioxide during 1 minute interval) cavity_temperature_std (Standard deviation of Picarro cavity temperature) co2_slope (Slope of carbon dioxide during 1 minute interval) dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box) outlet_valve_avg (Average outlet valve DAC value for Picarro cavity pressure control) cavity_temperature (Picarro optical cavity temperature) co2_dry_avg (Average carbon dioxide during 1 minute interval with instrument specific water correction) co2_avg (Average carbon dioxide during 1 minute interval) pressure_control (Average line pressure controller control pressure) dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box) co2_dry (Carbon dioxide dry volume mixing ratio) calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder) solenoid_valve (Value indicating which solenoid valve is currently used) calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder) exhaust_flow (Average line exhaust flow rate for tower sample) species (Species) front_fan_flow (Average air flow rate near front fan in pump box) ch4_avg (Average methane during 1 minute interval) ch4_slope (Slope of methane during 1 minute interval) ch4_offset (Methane offset coefficients calculated by measurements of calibration cylinders, linearly interpolated) ch4_dry_std (Standard deviation of methane during 1 minute interval with instrument specific water correction) ch4_dry_avg (Average methane during 1 minute interval with instrument specific water correction) ch4_dry_slope (Slope of dry methane during 1 minute interval) analyzer_temperature_std (Standard deviation of Picarro analyzer temperature) cavity_temperature_avg (Average Picarro cavity temperature) co2_offset (Carbon dioxide offset coefficients calculated by measurements of calibration cylinders, linearly interpolated) co2_dry_slope (Slope of dry carbon dioxide during 1 minute interval) nafion_box_temperature (Average nafion box temperature) h2o_vapor (Water vapor volume percentage) rear_fan_flow (Average air flow rate near rear fan in pump box) liquid_alarm_tower_inlet (Average liquid alarm state for tower sample) warm_box_temperature_std (Standard deviation of Picarro warm box temperature) etalon_temperature_avg (Average Picarro etalon temperature) outlet_valve (DAC (digital to analog converter) value for outlet proportional valve) ch4_offset_err (Uncertainty in methane offset coefficients calculated by measurements of calibration cylinders, linearly interpolated)

DQR ID: D160520.1 (Back to Top)

Start Date	Start Time	End Date	End Time	Data Quality Metric
2016-04-20	14:00:00	2016-04-20	16:00:00	Incorrect
2016-04-19	14:00:00	2016-04-19	15:00:00	Incorrect
2016-04-17	09:50:00	2016-04-17	10:10:00	Incorrect
2016-04-05	15:45:00	2016-04-05	16:45:00	Incorrect
2016-04-16	14:17:00	2016-04-16	14:21:00	Incorrect
2016-04-21	14:00:00	2016-04-21	15:45:00	Incorrect
2016-04-07	15:50:00	2016-04-07	17:00:00	Incorrect
2016-04-02	21:00:00	2016-04-02	23:59:00	Incorrect
2016-04-08	15:00:00	2016-04-08	16:00:00	Incorrect
2016-04-14	14:30:00	2016-04-14	15:30:00	Incorrect
2016-04-09	16:30:00	2016-04-09	18:30:00	Incorrect
2016-04-06	15:30:00	2016-04-06	18:00:00	Incorrect
2016-04-04	15:49:00	2016-04-04	17:00:00	Incorrect
2016-04-17	15:30:00	2016-04-17	16:15:00	Incorrect
2016-04-17	12:50:00	2016-04-17	13:40:00	Incorrect
2016-04-12	14:00:00	2016-04-12	15:00:00	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 (Carbon dioxide volume mixing ratio) co2_dry (Carbon dioxide dry volume mixing ratio)

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	calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder) front_fan_flow (Average air flow rate near front fan in pump box) warm_box_temperature (Warm box temperature) analyzer_temperature (Analyzer temperature) ch4_dry (Methane dry volume mixing ratio) nafion_purge_pressure (Average Nafion vacuum purge pressure) co2 (Carbon dioxide volume mixing ratio) calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder) cavity_pressure (Cavity pressure) instrument_status (Instrument status indicators) dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box) chiller_temperature (Average chiller temperature during 1 minute interval) etalon_temperature (Etalon temperature) calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder) alarm_status (Alarm status to be interpreted as a binary number.) ch4 (Methane volume mixing ratio) line_pressure_tower_inlet (Average line pressure for tower sample) pump_box_temperature (Average pump box temperature) mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8)) calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder) battery_minimum (Logger battery minimum in 1 minute interval) dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box) cavity_temperature (Picarro optical cavity temperature) pressure_control (Average line pressure controller control pressure) dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box) solenoid_valve (Value indicating which solenoid valve is currently used) calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder) co2_dry (Carbon dioxide dry volume mixing ratio) calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder) exhaust_flow (Average line exhaust flow rate for tower sample) species (Species) nafion_box_temperature (Average nafion box temperature) h2o_vapor (Water vapor volume percentage) rear_fan_flow (Average air flow rate near rear fan in pump box) liquid_alarm_tower_inlet (Average liquid alarm state for tower sample) mp_valve_position (Average multi port valve position) outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)

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	calibration_cylinder_1_line_pressure (Average line pressure for span 1 calibration cylinder) alt (Altitude above mean sea level) base_time (Base time in Epoch) front_fan_flow (Average air flow rate near front fan in pump box) warm_box_temperature (Warm box temperature) lat (North latitude) analyzer_temperature (Analyzer temperature) ch4_dry (Methane dry volume mixing ratio) nafion_purge_pressure (Average Nafion vacuum purge pressure) co2 (Carbon dioxide volume mixing ratio) calibration_cylinder_3_line_pressure (Average line pressure for target calibration cylinder) cavity_pressure (Cavity pressure) dry_purge_flow (Average air flow rate near dry air inlet for purge of nafion box) chiller_temperature (Average chiller temperature during 1 minute interval) calibration_cylinder_1_pressure (Average cylinder pressure for span 1 calibration cylinder) lon (East longitude) instrument_status (Instrument status indicators) etalon_temperature (Etalon temperature) alarm_status (Alarm status to be interpreted as a binary number.) ch4 (Methane volume mixing ratio) line_pressure_tower_inlet (Average line pressure for tower sample) pump_box_temperature (Average pump box temperature) mp_valve_position (Value indicates state of the rotary valco valve (range 1 to 8)) calibration_cylinder_3_pressure (Average cylinder pressure for target calibration cylinder) time (Time offset from midnight) battery_minimum (Logger battery minimum in 1 minute interval) dry_purge_line_pressure (Average line pressure for dry air cylinder for purge of nafion box) cavity_temperature (Picarro optical cavity temperature) pressure_control (Average line pressure controller control pressure) dry_purge_cylinder_pressure (Average cylinder pressure for dry air cylinder for purge of nafion box) solenoid_valve (Value indicating which solenoid valve is currently used) co2_dry (Carbon dioxide dry volume mixing ratio) calibration_cylinder_2_pressure (Average cylinder pressure for span 2 calibration cylinder) calibration_cylinder_2_line_pressure (Average line pressure for span 2 calibration cylinder) exhaust_flow (Average line exhaust flow rate for tower sample) species (Species) nafion_box_temperature (Average nafion box temperature) time_offset (Time offset from base_time) h2o_vapor (Water vapor volume percentage) rear_fan_flow (Average air flow rate near rear fan in pump box) liquid_alarm_tower_inlet (Average liquid alarm state for tower sample) mp_valve_position (Average multi port valve position) outlet_valve (DAC (digital to analog converter) value for outlet proportional valve)