Data Quality Reports for Session: 135827 User: jedavies Completed: 06/30/2011


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D091112.4SGP/MET/E27 - Rain Values IncorrectsgpmetE27.b1
D100106.1SGP/MET/E9 - Wind Speed Data IncorrectsgpmetE9.b1
D100218.1SGP/MET/E21 - Wind Sensor Inoperative Due to IcesgpmetE21.b1
D100303.2SGP/MET/E4 - Wind sensor frozensgpmetE4.b1
D100629.1SGP/MET/E20 - Rain Gauge Cable Chewed by RodentssgpmetE20.b1
D110105.2SGP/MET/E11 - Intermittent incorrect windspeedsgpmetE11.b1
D110415.2SGP/MET/E13 - PWD data incorrect/missingsgpmetE13.b1
D110419.1SGP/MET/E13 - Missing PWD datasgpmetE13.b1
D110524.1SGP/MET/E6 - Intermittent missing atmos pressure datasgpmetE6.b1
D110524.2SGP/MET/E21 - TimeCheck ErrorsgpmetE21.b1
D110524.3SGP/MET/E9 - TimeCheck ErrorsgpmetE9.b1
D110621.1SGP/MET/E11 - Instrument problem, UnknownsgpmetE11.b1


DQRID : D091112.4
Start DateStart TimeEnd DateEnd Time
10/29/2009000010/29/20092359
Subject:
SGP/MET/E27 - Rain Values Incorrect
DataStreams:sgpmetE27.b1
Description:
Rainfall reported as 600mm.  This value is incorrect.  Reason unknown; maintenance on this 
facility ceased 10/1/2009.
Measurements:sgpmetE27.b1:
  • Corrected total precipitation measured by TBRG(tbrg_precip_total_corr)
  • tbrg_precip_total


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DQRID : D100106.1
Start DateStart TimeEnd DateEnd Time
11/25/2009173312/10/20092121
Subject:
SGP/MET/E9 - Wind Speed Data Incorrect
DataStreams:sgpmetE9.b1
Description:
Wind speed sensor reference wire became detached.  This caused all wind sensor data to 
report near 0 m/s.
Measurements:sgpmetE9.b1:
  • Wind speed vector mean(wspd_vec_mean)
  • qc_wspd_vec_mean
  • qc_wspd_arith_mean
  • Wind speed arithmetic mean(wspd_arith_mean)


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DQRID : D100218.1
Start DateStart TimeEnd DateEnd Time
01/28/2010233002/01/20101815
Subject:
SGP/MET/E21 - Wind Sensor Inoperative Due to Ice
DataStreams:sgpmetE21.b1
Description:
Due to an ice storm the wind sensor was inoperative.
Measurements:sgpmetE21.b1:
  • qc_wdir_vec_mean
  • wdir_vec_std
  • Wind speed vector mean(wspd_vec_mean)
  • qc_wspd_vec_mean
  • Wind speed arithmetic mean(wspd_arith_mean)
  • qc_wspd_arith_mean
  • Wind direction vector mean(wdir_vec_mean)
  • qc_wdir_vec_std


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DQRID : D100303.2
Start DateStart TimeEnd DateEnd Time
02/21/2010075902/24/20101644
Subject:
SGP/MET/E4 - Wind sensor frozen
DataStreams:sgpmetE4.b1
Description:
Icing resulted in flatlined wind speed and direction measurements.
Measurements:sgpmetE4.b1:
  • Wind speed arithmetic mean(wspd_arith_mean)
  • Wind direction vector mean(wdir_vec_mean)
  • wdir_vec_std
  • Wind speed vector mean(wspd_vec_mean)


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DQRID : D100629.1
Start DateStart TimeEnd DateEnd Time
05/26/2010000006/21/20102021
Subject:
SGP/MET/E20 - Rain Gauge Cable Chewed by Rodents
DataStreams:sgpmetE20.b1
Description:
The rain gauge cable was damaged by rodents.  At the beginning of the time period, the 
data was falsely indicating nearly constant precipitation. Later it was falsely reporting no 
precipitation during a large rain event.

Data are not recoverable.
Measurements:sgpmetE20.b1:
  • Corrected total precipitation measured by TBRG(tbrg_precip_total_corr)
  • tbrg_precip_total


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DQRID : D110105.2
Start DateStart TimeEnd DateEnd Time
10/20/2010190011/01/20101539
Subject:
SGP/MET/E11 - Intermittent incorrect windspeed
DataStreams:sgpmetE11.b1
Description:
Starting on 10/20 the wind speed values intermittently flatlined.  Site operations 
reseated cable on 11/1.
Measurements:sgpmetE11.b1:
  • qc_wdir_vec_std
  • Wind speed vector mean(wspd_vec_mean)
  • qc_wspd_arith_mean
  • Wind direction vector mean(wdir_vec_mean)
  • qc_wdir_vec_mean
  • wdir_vec_std
  • Wind speed arithmetic mean(wspd_arith_mean)
  • qc_wspd_vec_mean


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DQRID : D110415.2
Start DateStart TimeEnd DateEnd Time
01/15/2011130002/18/20112200
Subject:
SGP/MET/E13 - PWD data incorrect/missing
DataStreams:sgpmetE13.b1
Description:
Data collection problems during the time period specified resulted in incorrect or missing 
PWD data.
Measurements:sgpmetE13.b1:
  • pwd_mean_vis_1min
  • pwd_mean_vis_10min
  • pwd_cumul_rain
  • pwd_cumul_snow
  • pwd_precip_rate_mean_1min
  • pwd_pw_code_15min
  • pwd_pw_code_1hr
  • pwd_pw_code_inst
  • pwd_err_code


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DQRID : D110419.1
Start DateStart TimeEnd DateEnd Time
09/09/2010000001/10/20112000
Subject:
SGP/MET/E13 - Missing PWD data
DataStreams:sgpmetE13.b1
Description:
PWD data were missing due to an accidental reset on the instrument.
Measurements:sgpmetE13.b1:
  • pwd_mean_vis_1min
  • pwd_mean_vis_10min
  • pwd_cumul_rain
  • pwd_cumul_snow
  • pwd_precip_rate_mean_1min
  • pwd_pw_code_15min
  • pwd_pw_code_1hr
  • pwd_pw_code_inst
  • pwd_err_code


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DQRID : D110524.1
Start DateStart TimeEnd DateEnd Time
04/09/2011162204/25/20111238
Subject:
SGP/MET/E6 - Intermittent missing atmos pressure data
DataStreams:sgpmetE6.b1
Description:
Atmospheric pressure data were intermittently missing during the period specified.  No 
known reason for the missing data.
Measurements:sgpmetE6.b1:
  • Atmospheric pressure(atmos_pressure)


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DQRID : D110524.2
Start DateStart TimeEnd DateEnd Time
06/07/2010000006/29/20102359
Subject:
SGP/MET/E21 - TimeCheck Error
DataStreams:sgpmetE21.b1
Description:
Starting on 2010-06-07 the E21 system clock started drifting until the problem was 
corrected on 2010-06-29.  The maximum daily offset reported in the collection logs were:

Jun 7 offset:	  -5.04
Jun 8  Offset:	  -267.449039
Jun 9  Offset:	  -541.038624
Jun 10 Offset:	  -814.469141
Jun 11 Offset:	  -1076.862114
Jun 12 Offset:	  -1350.330223
Jun 13 Offset:	  -1623.639335
Jun 14 Offset:	  -1897.047754
Jun 15 Offset:	  -2170.552312
Jun 16 Offset:	  -2422.130746
Jun 17 Offset:	  -2684.607495
Jun 18 - Jun 22 (unknown)
Jun 23 Offset:	  -4204.730579

If the E21 system clock drifts the E21 Datalogger clocks will be set to the same incorrect 
time. The met data will be correct but the corresponding time stamp cannot be accurately 
known or simply corrected.
Measurements:sgpmetE21.b1:
  • qc_wdir_vec_mean
  • wdir_vec_std
  • Wind speed vector mean(wspd_vec_mean)
  • vapor_pressure_mean
  • qc_wspd_vec_mean
  • Wind speed arithmetic mean(wspd_arith_mean)
  • qc_atmos_pressure
  • Corrected total precipitation measured by TBRG(tbrg_precip_total_corr)
  • tbrg_precip_total
  • Atmospheric pressure(atmos_pressure)
  • Wind direction vector mean(wdir_vec_mean)
  • qc_wdir_vec_std
  • time
  • qc_temp_mean
  • base_time
  • qc_rh_mean
  • Relative humidity mean(rh_mean)
  • time_offset
  • qc_vapor_pressure_mean
  • Temperature mean(temp_mean)
  • qc_tbrg_precip_total
  • qc_tbrg_precip_total_corr
  • qc_time
  • qc_wspd_arith_mean


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DQRID : D110524.3
Start DateStart TimeEnd DateEnd Time
05/07/2010000505/07/20100215
Subject:
SGP/MET/E9 - TimeCheck Error
DataStreams:sgpmetE9.b1
Description:
On May 7th the sgp.E9 instruments (EBBR, MET, SIRS, SWATS) time clocks were drifting 
outside the allowable +/-3 seconds.  During the specified period, the swings ranged from -326 
to +637 seconds.
Measurements:sgpmetE9.b1:
  • Relative humidity mean(rh_mean)
  • qc_wdir_vec_mean
  • qc_temp_mean
  • Wind speed vector mean(wspd_vec_mean)
  • qc_wdir_vec_std
  • Wind direction vector mean(wdir_vec_mean)
  • Atmospheric pressure(atmos_pressure)
  • qc_wspd_vec_mean
  • qc_rh_mean
  • time
  • Corrected total precipitation measured by TBRG(tbrg_precip_total_corr)
  • qc_tbrg_precip_total
  • qc_vapor_pressure_mean
  • qc_tbrg_precip_total_corr
  • Temperature mean(temp_mean)
  • wdir_vec_std
  • vapor_pressure_mean
  • base_time
  • qc_wspd_arith_mean
  • tbrg_precip_total
  • qc_time
  • time_offset
  • qc_atmos_pressure
  • Wind speed arithmetic mean(wspd_arith_mean)


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DQRID : D110621.1
Start DateStart TimeEnd DateEnd Time
05/14/2011072405/18/20110130
Subject:
SGP/MET/E11 - Instrument problem, Unknown
DataStreams:sgpmetE11.b1
Description:
Starting on 05/14 the wind speed values at E11 intermittently flatline.
Measurements:sgpmetE11.b1:
  • Wind speed arithmetic mean(wspd_arith_mean)


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