Data Quality Reports for Session: 181541 User: gdeboer Completed: 11/22/2016

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D160114.7OLI/GHG/M1 - Instrument setup probationary periodoliaosghgM1.a1Incorrect
D160213.1OLI/GHG/M1 - Chiller failureoliaosghgM1.a1Incorrect
D160213.2OLI/GHG/M1 - Tower pump failureoliaosghgM1.a1Suspect
D160317.7OLI/GHG/M1 - Line pressure control failureoliaosghgM1.a1Incorrect
D160330.1OLI/GHG/M1 - Reprocessed and Corrected:Incorrect data typeoliaosghgM1.a1Does not affect quality
D160408.2OLI/GHG/M1 - Pressure controller failureoliaosghgM1.a1Incorrect
D160520.1OLI/GHG/M1 - Snow removal causing spikesoliaosghgM1.a1Incorrect
D161014.7OLI/GHG/M1 - Reprocess: addition of height global attributeoliaosghgM1.a1Does not affect quality


DQRID : D160114.7
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/31/2015225606/28/20152359Incorrect
Subject:
OLI/GHG/M1 - Instrument setup probationary period
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:oliaosghgM1.a1:
  • CO2 mole fraction with water correction(co2_dry)
  • warm_box_temperature
  • Measured CH4 mole fraction(ch4)
  • cavity_pressure
  • mp_valve_position
  • species
  • Water vapor volume percentage(h2o_vapor)
  • instrument_status
  • Methane dry volume mixing ratio(ch4_dry)
  • solenoid_valve
  • etalon_temperature
  • alarm_status
  • cavity_temperature
  • outlet_valve
  • analyzer_temperature
  • Carbon dioxide volume mixing ratio(co2)

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DQRID : D160213.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/21/2015060008/10/20151659Incorrect
Subject:
OLI/GHG/M1 - Chiller failure
DataStreams:oliaosghgM1.a1
Description:
Chiller failure during this period
Measurements:oliaosghgM1.a1:
  • CO2 mole fraction with water correction(co2_dry)
  • warm_box_temperature
  • Measured CH4 mole fraction(ch4)
  • cavity_pressure
  • mp_valve_position
  • species
  • Water vapor volume percentage(h2o_vapor)
  • instrument_status
  • Methane dry volume mixing ratio(ch4_dry)
  • solenoid_valve
  • etalon_temperature
  • alarm_status
  • cavity_temperature
  • outlet_valve
  • analyzer_temperature
  • Carbon dioxide volume mixing ratio(co2)

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DQRID : D160213.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/26/2015120010/26/20151759Suspect
Subject:
OLI/GHG/M1 - Tower pump failure
DataStreams:oliaosghgM1.a1
Description:
Tower pump failure
Measurements:oliaosghgM1.a1:
  • CO2 mole fraction with water correction(co2_dry)
  • time
  • warm_box_temperature
  • North latitude(lat)
  • Measured CH4 mole fraction(ch4)
  • cavity_pressure
  • mp_valve_position
  • species
  • Water vapor volume percentage(h2o_vapor)
  • East longitude(lon)
  • base_time
  • instrument_status
  • Methane dry volume mixing ratio(ch4_dry)
  • solenoid_valve
  • etalon_temperature
  • alarm_status
  • cavity_temperature
  • outlet_valve
  • Carbon dioxide volume mixing ratio(co2)
  • time_offset
  • analyzer_temperature
  • Altitude above mean sea level(alt)

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DQRID : D160317.7
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/07/2016091803/08/20160721Incorrect
03/10/2016062603/11/20162237Incorrect
Subject:
OLI/GHG/M1 - Line pressure control failure
DataStreams:oliaosghgM1.a1
Description:
When the pressure controller is not controlling pressure adequately, co2/ch4 data cannot 
be used
Measurements:oliaosghgM1.a1:
  • Water vapor volume percentage(h2o_vapor)
  • CO2 mole fraction with water correction(co2_dry)
  • Methane dry volume mixing ratio(ch4_dry)
  • Measured CH4 mole fraction(ch4)
  • cavity_pressure
  • Carbon dioxide volume mixing ratio(co2)

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DQRID : D160330.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/31/2015225604/19/20162359Does not affect quality
Subject:
OLI/GHG/M1 - Reprocessed and Corrected:Incorrect data type
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

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--- ORIGINAL DQR DESCRIPTION ---
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Data will be reprocessed to read MP_VALVE_POSITION as a float instead of integer.
Measurements:oliaosghgM1.a1:
  • mp_valve_position

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DQRID : D160408.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/25/2016170004/08/20162100Incorrect
Subject:
OLI/GHG/M1 - Pressure controller failure
DataStreams:oliaosghgM1.a1
Description:
Pressure controller failure causes CO2, CH4, and H2O data to be unusable
Measurements:oliaosghgM1.a1:
  • Water vapor volume percentage(h2o_vapor)
  • CO2 mole fraction with water correction(co2_dry)
  • Methane dry volume mixing ratio(ch4_dry)
  • Measured CH4 mole fraction(ch4)
  • cavity_pressure
  • outlet_valve
  • Carbon dioxide volume mixing ratio(co2)

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DQRID : D160520.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/07/2016155004/07/20161700Incorrect
04/21/2016140004/21/20161545Incorrect
04/06/2016153004/06/20161800Incorrect
04/17/2016095004/17/20161010Incorrect
04/19/2016140004/19/20161500Incorrect
04/12/2016140004/12/20161500Incorrect
04/16/2016141704/16/20161421Incorrect
04/20/2016140004/20/20161600Incorrect
04/17/2016153004/17/20161615Incorrect
04/05/2016154504/05/20161645Incorrect
04/02/2016210004/02/20162359Incorrect
04/08/2016150004/08/20161600Incorrect
04/14/2016143004/14/20161530Incorrect
04/09/2016163004/09/20161830Incorrect
04/17/2016125004/17/20161340Incorrect
04/04/2016154904/04/20161700Incorrect
Subject:
OLI/GHG/M1 - Snow removal causing spikes
DataStreams:oliaosghgM1.a1
Description:
CO2 spikes caused by the dozer clearing snow onsite
Measurements:oliaosghgM1.a1:
  • CO2 mole fraction with water correction(co2_dry)
  • Carbon dioxide volume mixing ratio(co2)

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DQRID : D161014.7
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/01/2015000009/15/20162359Does not affect quality
Subject:
OLI/GHG/M1 - Reprocess: addition of height global attribute
DataStreams:oliaosghgM1.a1
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:oliaosghgM1.a1:
  • CO2 mole fraction with water correction(co2_dry)
  • warm_box_temperature
  • Measured CH4 mole fraction(ch4)
  • cavity_pressure
  • mp_valve_position
  • species
  • Water vapor volume percentage(h2o_vapor)
  • instrument_status
  • Methane dry volume mixing ratio(ch4_dry)
  • solenoid_valve
  • etalon_temperature
  • alarm_status
  • cavity_temperature
  • outlet_valve
  • analyzer_temperature
  • Carbon dioxide volume mixing ratio(co2)

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END OF DATA