Data Quality Reports for Session: 182044 User: schultzn1 Completed: 12/02/2016

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D030415.9SGP/TWR/C1 - West-side 25m data incorrect due to low batterysgp30twr25mC1.b1Incorrect
D040830.3SGP/TWR/C1 - 25m SW Incorrectsgp30twr25mC1.b1Incorrect
D090930.1SGP/TWR/C1 - 25m RH lowsgp30twr25mC1.b1Suspect
D121017.3SGP/TWR/C1 - Tower lowered for maintenancesgp30twr25mC1.b1Incorrect
D121017.4SGP/TWR/C1 - West tower lowered for maintenancesgp30twr25mC1.b1Incorrect
D130116.6SGP/TWR/C1 - Temp data suspectsgp30twr25mC1.b1Suspect
D131031.3SGP/TWR/C1 - Tower maintenancesgp30twr25mC1.b1Suspect
D990415.4SGP/TWR/C1 - Missing datasgp30twr25mC1.b1Missing
D990607.1SGP/TWR/C1 - W Side of Tower lowered for maintenancesgp30twr25mC1.b1Incorrect


DQRID : D030415.9
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/22/2003214002/26/20031520Incorrect
02/21/2003214002/22/20031916Incorrect
Subject:
SGP/TWR/C1 - West-side 25m data incorrect due to low battery
DataStreams:sgp30twr25mC1.b1
Description:
A low battery voltage caused T, RH, and VP to be incorrect. Data may be missing from some 
of the second period because battery voltage dropped to zero at one point.
Measurements:sgp30twr25mC1.b1:
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Pressure, vapor, at 2-m height, 30-min intervals(vap_pres)
  • Humidity, relative, on hybrid-b grid, derived from RUC model(rh)
  • Humidity, relative, at 2-m height, 30-min intervals, standard deviation(sd_rh)
  • Temperature, air, 60-m height, 30-min intervals(temp)
  • sd_vap_pres

Back To Table of Contents

DQRID : D040830.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
08/05/2004152609/16/20041615Incorrect
Subject:
SGP/TWR/C1 - 25m SW Incorrect
DataStreams:sgp30twr25mC1.b1
Description:
Wires were touching the fan inside the aspirator of the 25m SW level.  This occurred 
during maintenance to instruments on the SW side on 8/05/04; vibration of the carriage 
probably jostled the wires loose.

The temperature and relative humidity sensors were not adequately ventilated and therefore 
produced incorrect measurements of temperature, relative humidity, and vapor pressure.
Measurements:sgp30twr25mC1.b1:
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Pressure, vapor, at 2-m height, 30-min intervals(vap_pres)
  • Humidity, relative, on hybrid-b grid, derived from RUC model(rh)
  • Humidity, relative, at 2-m height, 30-min intervals, standard deviation(sd_rh)
  • Temperature, air, 60-m height, 30-min intervals(temp)
  • sd_vap_pres

Back To Table of Contents

DQRID : D090930.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/01/2009000009/21/20091505Suspect
Subject:
SGP/TWR/C1 - 25m RH low
DataStreams:sgp30twr25mC1.b1
Description:
The west side 25m RH gradually drifted downwards over this period such that it was 8% 
lower than the 60m level RH measurement when compared side by side at ground level. T/RH 
sensor was replaced 21 September 2009.
Measurements:sgp30twr25mC1.b1:
  • Pressure, vapor, at 2-m height, 30-min intervals(vap_pres)
  • Humidity, relative, on hybrid-b grid, derived from RUC model(rh)

Back To Table of Contents

DQRID : D121017.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/09/2012184510/09/20122210Incorrect
Subject:
SGP/TWR/C1 - Tower lowered for maintenance
DataStreams:sgp30twr25mC1.b1
Description:
The Tower carriages were lowered for T/RH probe replacements. All measurements from the 
instruments on the carriages are incorrect.
Measurements:sgp30twr25mC1.b1:
  • aspirator
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Pressure, vapor, at 2-m height, 30-min intervals(vap_pres)
  • Humidity, relative, on hybrid-b grid, derived from RUC model(rh)
  • Humidity, relative, at 2-m height, 30-min intervals, standard deviation(sd_rh)
  • Temperature, air, 60-m height, 30-min intervals(temp)
  • sd_vap_pres

Back To Table of Contents

DQRID : D121017.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/10/2012190510/10/20122045Incorrect
Subject:
SGP/TWR/C1 - West tower lowered for maintenance
DataStreams:sgp30twr25mC1.b1
Description:
The west tower elevator was operated to find a 60 m temperature sensor problem. All 
measurements on the west side are incorrect during this period.
Measurements:sgp30twr25mC1.b1:
  • aspirator
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Pressure, vapor, at 2-m height, 30-min intervals(vap_pres)
  • Humidity, relative, on hybrid-b grid, derived from RUC model(rh)
  • Humidity, relative, at 2-m height, 30-min intervals, standard deviation(sd_rh)
  • Temperature, air, 60-m height, 30-min intervals(temp)
  • sd_vap_pres

Back To Table of Contents

DQRID : D130116.6
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/26/2012180010/28/20120130Suspect
Subject:
SGP/TWR/C1 - Temp data suspect
DataStreams:sgp30twr25mC1.b1
Description:
The 1twr25m_temp data stream remained constant (data looks stepped) at varying intervals 
and appears erroneous when compared with the other twr measurements. 

The problem was only severe for the time period indicated. This behavior has been seen 
before and since, but usually not this severe.

It has a small effect on the calculated vapor pressure.
Measurements:sgp30twr25mC1.b1:
  • Temperature, air, 60-m height, 30-min intervals(temp)

Back To Table of Contents

DQRID : D131031.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/22/2013183010/25/20131700Suspect
Subject:
SGP/TWR/C1 - Tower maintenance
DataStreams:sgp30twr25mC1.b1
Description:
T/RH/VP were incorrect at times because the tower was undergoing maintenance or instrument 
issues were being assessed.
Measurements:sgp30twr25mC1.b1:
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Pressure, vapor, at 2-m height, 30-min intervals(vap_pres)
  • Humidity, relative, on hybrid-b grid, derived from RUC model(rh)
  • Humidity, relative, at 2-m height, 30-min intervals, standard deviation(sd_rh)
  • Temperature, air, 60-m height, 30-min intervals(temp)
  • sd_vap_pres

Back To Table of Contents

DQRID : D990415.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/03/2002143702/10/20022223Missing
03/13/1999230503/15/19990611Missing
02/22/2003232002/26/20031518Missing
03/09/2002200203/11/20022101Missing
Subject:
SGP/TWR/C1 - Missing data
DataStreams:sgp30twr25mC1.b1
Description:
Data are missing and unrecoverable.
Measurements:sgp30twr25mC1.b1:
  • base_time
  • aspirator
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Pressure, vapor, at 2-m height, 30-min intervals(vap_pres)
  • East longitude(lon)
  • Humidity, relative, on hybrid-b grid, derived from RUC model(rh)
  • time_offset
  • North latitude(lat)
  • Humidity, relative, at 2-m height, 30-min intervals, standard deviation(sd_rh)
  • Temperature, air, 60-m height, 30-min intervals(temp)
  • sd_vap_pres
  • Altitude above mean sea level(alt)

Back To Table of Contents

DQRID : D990607.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/03/2007173610/03/20071820Incorrect
12/18/2002174912/18/20022036Incorrect
09/10/2002183909/10/20021921Incorrect
05/19/1999175505/20/19991755Incorrect
10/31/2002220011/01/20021744Incorrect
10/12/2004141710/13/20041700Incorrect
08/14/2000144708/14/20002138Incorrect
08/05/2003183708/05/20031914Incorrect
02/01/2001203702/01/20012112Incorrect
07/26/2007134007/26/20071900Incorrect
02/22/2003192702/22/20032111Incorrect
10/31/2002144610/31/20021621Incorrect
09/27/2004143209/27/20042105Incorrect
11/16/1999161111/16/19991701Incorrect
10/11/2006150510/11/20062024Incorrect
02/11/2004161402/11/20042213Incorrect
05/15/2003161805/15/20032124Incorrect
07/16/1999141707/16/19991823Incorrect
12/17/2002163412/17/20022152Incorrect
08/05/2004145108/05/20041525Incorrect
08/08/2001135608/08/20011850Incorrect
02/12/1999182702/12/19991846Incorrect
10/05/2006174610/05/20062031Incorrect
02/21/2003192702/21/20032113Incorrect
05/24/2005141005/25/20052145Incorrect
07/02/1999172007/02/19991925Incorrect
08/14/2003152108/15/20031945Incorrect
10/01/2007172510/01/20071812Incorrect
08/03/2001193208/03/20012108Incorrect
04/30/1999151504/30/19991730Incorrect
04/26/2004152904/29/20041346Incorrect
08/01/2002133008/01/20022201Incorrect
05/18/2006153005/18/20062102Incorrect
02/09/2004161902/10/20041753Incorrect
05/24/2006132805/24/20061631Incorrect
08/02/2002135408/02/20021912Incorrect
05/22/2006200205/22/20062052Incorrect
10/20/2004175510/20/20041925Incorrect
Subject:
SGP/TWR/C1 - W Side of Tower lowered for maintenance
DataStreams:sgp30twr25mC1.b1
Description:
The west side tower carriages were lowered for maintenance and/or data are offscale during 
routine maintenance.
Measurements:sgp30twr25mC1.b1:
  • Temperature, air, 30-min intervals, standard deviation(sd_temp)
  • Pressure, vapor, at 2-m height, 30-min intervals(vap_pres)
  • Humidity, relative, on hybrid-b grid, derived from RUC model(rh)
  • Humidity, relative, at 2-m height, 30-min intervals, standard deviation(sd_rh)
  • Temperature, air, 60-m height, 30-min intervals(temp)
  • sd_vap_pres

Back To Table of Contents


END OF DATA