Data Quality Reports for Session: 124165 User: jianjun522 Completed: 11/06/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020313.1SGP/THWAPS/C1 - THWAPS C1 miscalibratedsgpthwapsC1.a1, sgpthwapsC1.b1
D030917.21SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problemssgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1,
sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1,
sgpthwapsC1.b1
D041123.1SGP/THWAPS/C1 - RH Sensor CalibrationsgpthwapsC1.b1
D050812.12SGP/THWAPS/C1 - Minor bias in saturation vapor pressuresgpthwapsC1.b1
D070905.2SGP/AOS/C1 - CPC failuresgpaosC1.a1
D080116.24SGP/THWAPS/C1 - RH Data IncorrectsgpthwapsC1.b1
D090120.5SGP/AOS/C1 - Pump failure and subsequent failure of humidified nephelometersgpaosC1.a1
D090211.2SGP/THWAPS/C1 - Barometer intermittentsgpthwapsC1.b1
D090306.1SGP/THWAPS/C1 - Time stamp of data record incorrectsgpthwapsC1.b1


DQRID : D020313.1
Start DateStart TimeEnd DateEnd Time
03/09/2002034004/23/20021418
Subject:
SGP/THWAPS/C1 - THWAPS C1 miscalibrated
DataStreams:sgpthwapsC1.a1, sgpthwapsC1.b1
Description:
Power outages apparently led to the THWAPS HMP233 temperature and RH sensor
being replaced at C1.  The power went out at 0340 on 3/9 was restored at
0635 and went out again at 2025.

The new HMP233 appears to be incorrectly calibrated and all temperature
data since its installation are wrong.  If I am correct about the nature
of the calibration problem, the true average temperature can be recovered
from that recorded by a linear conversion, but I don't think its worth the
trouble.
Measurements:sgpthwapsC1.a1:
  • Standard Deviation of Air Temperature(sd_temp)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Beam 0 Temperature(temp)
  • Relative humidity inside the instrument enclosure(rh)
sgpthwapsC1.b1:
  • Beam 0 Temperature(temp)
  • Relative humidity inside the instrument enclosure(rh)
  • Standard Deviation of Air Temperature(sd_temp)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Vapor Pressure (kiloPascals)(vap_pres)

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DQRID : D030917.21
Start DateStart TimeEnd DateEnd Time
03/09/2002205503/11/20022005
03/13/2002175503/14/20021505
Subject:
SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems
DataStreams:sgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1,
sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1,
sgpthwapsC1.b1
Description:
Data are missing due to power failures caused by an ice storm
and resulting system/instrument clock problems.
Measurements:sgpthwapsC1.a1:
  • Standard Deviation of Relative Humidity(sd_rh)
  • Unit Vector Wind Direction(wdir)
  • lat(lat)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Mean Wind Speed(wspd)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Beam 0 Temperature(temp)
  • Standard Deviation of Air Temperature(sd_temp)
  • base time(base_time)
  • Standard Deviation of Wind Direction(sd_wdir)
  • lon(lon)
  • Standard Deviation of Pressure(sd_pres)
  • Retrieved pressure profile(pres)
  • Batter Voltage(vbat)
  • Dummy altitude for Zeb(alt)
sgpthwapsB1.b1:
  • Retrieved pressure profile(pres)
  • lat(lat)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Standard Deviation of Air Temperature(sd_temp)
  • Batter Voltage(vbat)
  • Unit Vector Wind Direction(wdir)
  • Beam 0 Temperature(temp)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Time offset of tweaks from base_time(time_offset)
  • Standard Deviation of Pressure(sd_pres)
  • Relative humidity inside the instrument enclosure(rh)
  • Mean Wind Speed(wspd)
  • Standard Deviation of Wind Direction(sd_wdir)
  • lon(lon)
  • base time(base_time)
  • Dummy altitude for Zeb(alt)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
sgpthwapsB5.00:
  • null(Raw data stream - documentation not supported)
sgpthwapsB6.00:
  • null(Raw data stream - documentation not supported)
sgpthwapsB6.a1:
  • lon(lon)
  • Batter Voltage(vbat)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Standard Deviation of Wind Direction(sd_wdir)
  • Mean Wind Speed(wspd)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Relative humidity inside the instrument enclosure(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • lat(lat)
  • Retrieved pressure profile(pres)
  • Unit Vector Wind Direction(wdir)
  • base time(base_time)
  • Dummy altitude for Zeb(alt)
  • Beam 0 Temperature(temp)
  • Standard Deviation of Pressure(sd_pres)
  • Standard Deviation of Air Temperature(sd_temp)
sgpthwapsB5.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Standard Deviation of Air Temperature(sd_temp)
  • Batter Voltage(vbat)
  • lon(lon)
  • Mean Wind Speed(wspd)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Retrieved pressure profile(pres)
  • lat(lat)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • Standard Deviation of Wind Direction(sd_wdir)
  • Standard Deviation of Pressure(sd_pres)
  • Unit Vector Wind Direction(wdir)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Beam 0 Temperature(temp)
  • Dummy altitude for Zeb(alt)
sgpthwapsC1.00:
  • null(Raw data stream - documentation not supported)
sgpthwapsB1.a1:
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • Relative humidity inside the instrument enclosure(rh)
  • Standard Deviation of Wind Direction(sd_wdir)
  • Batter Voltage(vbat)
  • lon(lon)
  • Time offset of tweaks from base_time(time_offset)
  • lat(lat)
  • Beam 0 Temperature(temp)
  • Mean Wind Speed(wspd)
  • Standard Deviation of Pressure(sd_pres)
  • Standard Deviation of Relative Humidity(sd_rh)
  • base time(base_time)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Standard Deviation of Air Temperature(sd_temp)
  • Retrieved pressure profile(pres)
  • Dummy altitude for Zeb(alt)
  • Unit Vector Wind Direction(wdir)
sgpthwapsC1.b1:
  • lon(lon)
  • Retrieved pressure profile(pres)
  • Batter Voltage(vbat)
  • Beam 0 Temperature(temp)
  • Time offset of tweaks from base_time(time_offset)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • Standard Deviation of Air Temperature(sd_temp)
  • Standard Deviation of Wind Direction(sd_wdir)
  • Unit Vector Wind Direction(wdir)
  • base time(base_time)
  • Relative humidity inside the instrument enclosure(rh)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Standard Deviation of Pressure(sd_pres)
  • Mean Wind Speed(wspd)
sgpthwapsB1.00:
  • null(Raw data stream - documentation not supported)
sgpthwapsB6.b1:
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • Batter Voltage(vbat)
  • lat(lat)
  • Standard Deviation of Pressure(sd_pres)
  • Standard Deviation of Air Temperature(sd_temp)
  • Time offset of tweaks from base_time(time_offset)
  • Standard Deviation of Wind Direction(sd_wdir)
  • Relative humidity inside the instrument enclosure(rh)
  • Beam 0 Temperature(temp)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Unit Vector Wind Direction(wdir)
  • Retrieved pressure profile(pres)
  • Dummy altitude for Zeb(alt)
  • base time(base_time)
  • Mean Wind Speed(wspd)
  • Standard Deviation of Relative Humidity(sd_rh)
  • lon(lon)
sgpthwapsB5.a1:
  • Unit Vector Wind Direction(wdir)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • base time(base_time)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Batter Voltage(vbat)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Standard Deviation of Air Temperature(sd_temp)
  • Standard Deviation of Pressure(sd_pres)
  • lon(lon)
  • Time offset of tweaks from base_time(time_offset)
  • Standard Deviation of Wind Direction(sd_wdir)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Mean Wind Speed(wspd)
  • Retrieved pressure profile(pres)
  • Beam 0 Temperature(temp)

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DQRID : D041123.1
Start DateStart TimeEnd DateEnd Time
11/16/2004213511/29/20041930
Subject:
SGP/THWAPS/C1 - RH Sensor Calibration
DataStreams:sgpthwapsC1.b1
Description:
The analog output for the T/RH probe was incorrectly calibrated.  This
caused excessively high readings of RH.
Measurements:sgpthwapsC1.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Vapor Pressure (kiloPascals)(vap_pres)

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DQRID : D050812.12
Start DateStart TimeEnd DateEnd Time
09/21/1999000008/10/20051445
Subject:
SGP/THWAPS/C1 - Minor bias in saturation vapor pressure
DataStreams:sgpthwapsC1.b1
Description:
The saturation vapor correction when temps are below 0C contained an error
in the multiplier.  The incorrect multiplier only equates to an error of
0.01 kPa which is less than the stated uncertainty of the measurement (+/-
0.035 kPa).
Measurements:sgpthwapsC1.b1:
  • Vapor Pressure (kiloPascals)(vap_pres)

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DQRID : D070905.2
Start DateStart TimeEnd DateEnd Time
07/11/2007094007/24/20072205
08/17/2007214008/30/20071900
Subject:
SGP/AOS/C1 - CPC failure
DataStreams:sgpaosC1.a1
Description:
The Condensation Particle Counter stopped recording counts. Upon inspection the tech found 
that water had condensed in the reservoir. The CPC was shipped back to the mentor for 
repair and a replacement CPC from NOAA was sent to the site.

The replacement Condensation Particle Counter stopped measuring particle counts and was 
removed and returned to NOAA. The thermoelectric cooler in the device had stopped working. 
The ARM CPC that had previously been sent back to NOAA for repair was fixed and returned 
to SGP.
Measurements:sgpaosC1.a1:
  • Condensation Nuclei Concentration Number(N_CPC_1)

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DQRID : D080116.24
Start DateStart TimeEnd DateEnd Time
12/22/2007175012/22/20072130
Subject:
SGP/THWAPS/C1 - RH Data Incorrect
DataStreams:sgpthwapsC1.b1
Description:
The RH data was incorrect during the times listed.  Reason unknown.  The sensor recovered 
on its own.
Measurements:sgpthwapsC1.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Vapor Pressure (kiloPascals)(vap_pres)

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DQRID : D090120.5
Start DateStart TimeEnd DateEnd Time
07/19/2008011201/06/20091912
Subject:
SGP/AOS/C1 - Pump failure and subsequent failure of humidified nephelometer
DataStreams:sgpaosC1.a1
Description:
The pump for the aerosol sampling system failed over a weekend. The humidifier continued 
to operate and soaked the inside of both the reference and wet nephelometers. The 
nephelometers were returned for repair. A replacement neph was installed on 2008-August 5 @1858 
UTC. The nephs were repaired and returned to SGP in December 2008. The humidification 
system was rebuilt and installed on 2009 January 6 at 1912 UTC.
Measurements:sgpaosC1.a1:
  • Aerosol light absorption coefficient, green channel, 10 um size cut(Ba_G_Dry_10um_PSAP1W_1)
  • Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
    PSAP, 10 um size cut(Ba_R_Dry_10um_PSAP3W_1)
  • Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
    PSAP, 10 um size cut(Ba_G_Dry_10um_PSAP3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, green channel, 10 um
    size cut, reference three wavelength nephelometer(Bbs_G_Dry_10um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, red channel, 1 um
    size cut, wet three wavelength nephelometer(Bbs_R_Wet_1um_Neph3W_2)
  • Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
    PSAP, 1 um size cut(Ba_R_Dry_1um_PSAP3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
    size cut, wet three wavelength nephelometer(Bbs_G_Wet_1um_Neph3W_2)
  • Aerosol total light scattering coefficient, blue channel, 1 um size cut, wet
    three wavelength nephelometer(Bs_B_Wet_1um_Neph3W_2)
  • Aerosol total light scattering coefficient, green channel, 10 um size cut, wet
    three wavelength nephelometer(Bs_G_Wet_10um_Neph3W_2)
  • Aerosol backwards-hemispheric light scattering coefficient, red channel, 10 um
    size cut, wet three wavelength nephelometer(Bbs_R_Wet_10um_Neph3W_2)
  • Aerosol total light scattering coefficient, green channel, 1 um size cut, wet
    three wavelength nephelometer(Bs_G_Wet_1um_Neph3W_2)
  • Aerosol total light scattering coefficient, red channel, 1 um size cut, wet
    three wavelength nephelometer(Bs_R_Wet_1um_Neph3W_2)
  • Relative humidity of humidograph preheater(RH_preHG)
  • Aerosol total light scattering coefficient, red channel, 1 um size cut,
    reference three wavelength nephelometer(Bs_R_Dry_1um_Neph3W_1)
  • Temperature of humidograph controller(T_postHG)
  • Aerosol total light scattering coefficient, red channel, 10 um size cut, wet
    three wavelength nephelometer(Bs_R_Wet_10um_Neph3W_2)
  • Temperature at wet nephelometer inlet(T_NephInlet_Wet)
  • Relative humidity of humidograph controller(RH_postHG)
  • Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
    size cut, reference three wavelength nephelometer(Bbs_G_Dry_1um_Neph3W_1)
  • Aerosol total light scattering coefficient, green channel, 1 um size cut,
    reference three wavelength nephelometer(Bs_G_Dry_1um_Neph3W_1)
  • Relative humidity at wet nephelometer inlet(RH_NephInlet_Wet)
  • Temperature at reference nephelometer inlet(T_NephInlet_Dry)
  • Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10 um
    size cut, wet three wavelength nephelometer(Bbs_B_Wet_10um_Neph3W_2)
  • Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
    PSAP, 1 um size cut(Ba_G_Dry_1um_PSAP3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10 um
    size cut, reference three wavelength nephelometer(Bbs_B_Dry_10um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
    size cut, reference three wavelength nephelometer(Bbs_B_Dry_1um_Neph3W_1)
  • Relative humidity at reference nephelometer inlet(RH_NephInlet_Dry)
  • Absorption Coefficient Blue, corrected for flow and sample area, 3 wavelength
    PSAP, 10 um size cut(Ba_B_Dry_10um_PSAP3W_1)
  • Aerosol total light scattering coefficient, green channel, 10 um size cut,
    reference three wavelength nephelometer(Bs_G_Dry_10um_Neph3W_1)
  • Temperature of humidograph preheater(T_preHG)
  • Aerosol total light scattering coefficient, blue channel, 10 um size cut, wet
    three wavelength nephelometer(Bs_B_Wet_10um_Neph3W_2)
  • Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
    size cut, wet three wavelength nephelometer(Bbs_B_Wet_1um_Neph3W_2)
  • Aerosol light absorption coefficient, green channel, 1 um size cut(Ba_G_Dry_1um_PSAP1W_1)
  • Aerosol total light scattering coefficient, blue channel, 1 um size cut,
    reference three wavelength nephelometer(Bs_B_Dry_1um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, red channel, 10 um
    size cut, reference three wavelength nephelometer(Bbs_R_Dry_10um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, green channel, 10 um
    size cut, wet three wavelength nephelometer(Bbs_G_Wet_10um_Neph3W_2)
  • Aerosol total light scattering coefficient, red channel, 10 um size cut,
    reference three wavelength nephelometer(Bs_R_Dry_10um_Neph3W_1)
  • Aerosol total light scattering coefficient, blue channel, 10 um size cut,
    reference three wavelength nephelometer(Bs_B_Dry_10um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, red channel, 1 um
    size cut, reference three wavelength nephelometer(Bbs_R_Dry_1um_Neph3W_1)
  • Absorption Coefficient Blue, corrected for flow and sample area, 3 wavelength
    PSAP, 1 um size cut(Ba_B_Dry_1um_PSAP3W_1)

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DQRID : D090211.2
Start DateStart TimeEnd DateEnd Time
01/09/2009000002/13/20092359
Subject:
SGP/THWAPS/C1 - Barometer intermittent
DataStreams:sgpthwapsC1.b1
Description:
Intermittent dropouts on the barometer data were occurring, with data reading low or 
missing.  Loose wiring was the probable culprit.

In most instances, only 1 minute of data was missing. Linear interpolation between the 
last known good point and the first good point following the dropout can be accomplished.
Measurements:sgpthwapsC1.b1:
  • Retrieved pressure profile(pres)

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DQRID : D090306.1
Start DateStart TimeEnd DateEnd Time
12/09/2008000001/23/20092359
Subject:
SGP/THWAPS/C1 - Time stamp of data record incorrect
DataStreams:sgpthwapsC1.b1
Description:
Due to problems with the collector system, the datalogger was being time synched 
inappropriately.  This problem was intermittent and did not affect every time stamp.  The worst 
case time adjustments were approximately +/- 7 minutes.  These were infrequent and most of 
the time adjustments were less than 7 minutes.
Measurements:sgpthwapsC1.b1:
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

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