DQRs for Session: 185286 User:roches1Completed: 04-28-2017

Data Quality Reports for Session: 185286 User: roches1 Completed: 04/28/2017

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected	Data Quality Metric
D040212.4	SGP/PGS/C1 - Reprocessing User Notes	sgppgsC1.b1	Does not affect quality
D041015.2	SGP/PGS/C1 - Reprocessing User Notes	sgppgsC1.b1	Does not affect quality
D050111.1	SGP/PGS/C1 - Incorrect 60m Data	sgppgsC1.b1	Incorrect
D051118.1	SGP/PGS/C1 - Suspicious 4m data	sgppgsC1.b1	Suspect
D051118.2	SGP/PGS/C1 - Suspicious 2m data	sgppgsC1.b1	Suspect
D051118.3	SGP/PGS/C1 - Suspicious 25m and 60m data	sgppgsC1.b1	Suspect
D051118.4	SGP/PGS/C1 - Updated files	sgppgsC1.b1	Does not affect quality

DQRID : D040212.4

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/11/2001	0000	02/12/2004	2359	Does not affect quality

Subject:	SGP/PGS/C1 - Reprocessing User Notes
DataStreams:	sgppgsC1.b1
Description:	Time Variables - to make the PGS system more consistent with LBNL's other data streams, the variable 'yyyymmddhhmmss' was renamed 'yyyydddhhmmss'. Also, at the bottom of each file, variables 'yyyy','mon','hour','min' were added for those users who prefer to use these variables instead. The new 'time' variable (seconds since midnight of the start of file) was added to make files compatible with the new recommendations. Quality Control Flags - to prevent confusion, the quality control flags 'qc_co2ppm' and 'qc_sum_co2' were combined. The flag 'qc_sum_co2' was elliminated and 'qc_co2ppm' now performs range checking on 'co2ppm' variable as well as checking values of all dependencies' qc flags.
Measurements:	sgppgsC1.b1: iso co2mv_se Calculated concentration of CO2(co2ppm) t_refrig base_time warn_flag pres_ctrlr co2mv_slope site_longitude site_latitude co2mv_slope_se co2mv coeff3_se channel flow_rate 90% confidence limit of co2ppm(co2ppm_se) coeff1_se coeff2_se r2 coeff3 reject_flag coeff2 adj coeff1 site_elevation t_irga pres2 co2mv_slope_pval Surface pressure(pres1) pres4 pres3 yyyymmddhhmmss nmeas ref

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DQRID : D041015.2

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/11/2001	1156	08/31/2004	2359	Does not affect quality

Subject:	SGP/PGS/C1 - Reprocessing User Notes
DataStreams:	sgppgsC1.b1
Description:	Precise Gas System (pgs) daily b1 files should have a dimension of 480, corresponding to a measurement every 3 minutes. Previously submitted files had a dimension of 481, the last time step of each individual file being mistakenly repeated.
Measurements:	sgppgsC1.b1: iso co2mv_se Calculated concentration of CO2(co2ppm) t_refrig base_time warn_flag pres_ctrlr co2mv_slope site_longitude site_latitude co2mv_slope_se co2mv coeff3_se channel flow_rate 90% confidence limit of co2ppm(co2ppm_se) coeff1_se coeff2_se r2 coeff3 reject_flag coeff2 adj coeff1 site_elevation t_irga pres2 co2mv_slope_pval Surface pressure(pres1) pres4 pres3 yyyymmddhhmmss nmeas ref

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DQRID : D050111.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
01/05/2005	0853	01/07/2005	2026	Incorrect

Subject:	SGP/PGS/C1 - Incorrect 60m Data
DataStreams:	sgppgsC1.b1
Description:	Precise Gas system (PGS) data at 60m (channel 4) are incorrect. This problem is due to a freezing rain and ice storm that hit SGP Central facility on January 5, 2005. The 60m tower inlet was clogged with ice and consequently, no air was supplied to the PGS instrument.
Measurements:	sgppgsC1.b1: pres_ctrlr flow_rate co2mv_slope co2mv_se 90% confidence limit of co2ppm(co2ppm_se) Calculated concentration of CO2(co2ppm) co2mv_slope_se co2mv_slope_pval pres4 co2mv

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DQRID : D051118.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
11/24/2004	0000	08/19/2005	0100	Suspect

Subject:	SGP/PGS/C1 - Suspicious 4m data
DataStreams:	sgppgsC1.b1
Description:	KNF pump for 4m height (channel 2) started to leak on November 24, 2004 and sampled air was consequently "contaminated" by indoor air. The pump was replaced on August 19, 2005.
Measurements:	sgppgsC1.b1: 90% confidence limit of co2ppm(co2ppm_se) Calculated concentration of CO2(co2ppm)

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DQRID : D051118.2

Start Date	Start Time	End Date	End Time	Data Quality Metric
07/22/2004	0000	08/19/2005	0100	Suspect

Subject:	SGP/PGS/C1 - Suspicious 2m data
DataStreams:	sgppgsC1.b1
Description:	KNF pump for 2m height (channel 1) started to leak on July 22, 2004 and sampled air was consequently "contaminated" by indoor air. The pump was replaced on August 19, 2005.
Measurements:	sgppgsC1.b1: 90% confidence limit of co2ppm(co2ppm_se) Calculated concentration of CO2(co2ppm)

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DQRID : D051118.3

Start Date	Start Time	End Date	End Time	Data Quality Metric
03/31/2005	0000	08/19/2005	0100	Suspect

Subject:	SGP/PGS/C1 - Suspicious 25m and 60m data
DataStreams:	sgppgsC1.b1
Description:	KNF pumps for 25m and 60m height (channel 3 and channel 4) started to leak on March 31, 2005 and sampled air was consequently "contaminated" by indoor air. The pumps were replaced on August 19, 2005.
Measurements:	sgppgsC1.b1: 90% confidence limit of co2ppm(co2ppm_se) Calculated concentration of CO2(co2ppm)

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DQRID : D051118.4

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/11/2001	1156	10/31/2005	2359	Does not affect quality

Subject:	SGP/PGS/C1 - Updated files
DataStreams:	sgppgsC1.b1
Description:	Dew point temperature (dpt) sensor (Vaisala DMT 142) was added to the system on May 24, 2005 to assess water trapping system efficiency. Consequently, variable "dpt" is filled with missing values (-999.99) prior measurements start date (May 24, 2005).
Measurements:	sgppgsC1.b1: iso co2mv_se Calculated concentration of CO2(co2ppm) t_refrig base_time warn_flag pres_ctrlr co2mv_slope site_longitude site_latitude co2mv_slope_se co2mv coeff3_se channel flow_rate 90% confidence limit of co2ppm(co2ppm_se) coeff1_se coeff2_se r2 coeff3 reject_flag coeff2 adj coeff1 site_elevation t_irga pres2 co2mv_slope_pval Surface pressure(pres1) pres4 pres3 yyyymmddhhmmss nmeas ref

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