Data Quality Reports for Session: 108681 User: perez Completed: 10/30/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D000801.3SGP/AOS/C1 - Nephelometer failuresgpaosC1.a0, sgpaosauxC1.a0
D000801.4SGP/AOS/C1 - Nephelometer failuresgpaosC1.a0, sgpaosauxC1.a0
D000801.5SGP/AOS/C1 - Nephelometer failuresgpaosC1.a0, sgpaosauxC1.a0
D020709.3SGP/AOS/C1 - AOS Computer FailuresgpaosC1.a0, sgpaosauxC1.a0
D021007.1SGP/AOS/C1 - Ozone instrument out of servicesgpaosC1.a0, sgpaosauxC1.a0
D030210.1SGP/AOS/C1 - Data missingsgpaosC1.00, sgpaosC1.a0, sgpaosauxC1.a0
D040130.1SGP/AOS/C1 - Ozone Instrument removed for repairsgpaosC1.a0, sgpaosauxC1.a0
D041026.3SGP/AOS/C1 - PCASP instrument problemsgpaosC1.a0, sgpaosauxC1.a0
D041026.4SGP/AOS/C1 - Ozone instrument removed for repairsgpaosC1.a0, sgpaosauxC1.a0
D041026.5SGP/AOS/C1 - Condensation Particle Counter failuresgpaosC1.a0, sgpaosauxC1.a0
D041026.6SGP/AOS/C1 - Wet nephelometer problemssgpaosC1.a0, sgpaosauxC1.a0
D041118.1SGP/AOS/C1 - MainAirFlow sensor errorsgpaosauxC1.a0
D980527.4SGP/AOS/C1 - Condensation Particle Counter failuresgpaosC1.a0, sgpaosauxC1.a0
D980528.1SGP/AOS/C1 - Optical Particle Counter (PCASP-X) downsgpaosC1.a0, sgpaosauxC1.a0
D980528.10SGP/AOS/C1 - Instrument communications problemssgpaosC1.a0, sgpaosauxC1.a0
D980528.2SGP/AOS/C1 - 3-wavelength nephelometer data missingsgpaosC1.a0, sgpaosauxC1.a0
D980528.6SGP/AOS/C1 - Ozone instrument left in span modesgpaosC1.a0, sgpaosauxC1.a0
D980528.7SGP/AOS/C1 - Line 8 bypass in wrong positionsgpaosC1.a0, sgpaosauxC1.a0
D980528.8SGP/AOS/C1 - Light absorption photometer (PSAP) errorsgpaosC1.a0, sgpaosauxC1.a0
D980528.9SGP/AOS/C1 - Ozone Instrument Communication FailuresgpaosC1.a0, sgpaosauxC1.a0
D980529.1SGP/AOS/C1 - Ozone Instrument data incorrectsgpaosC1.a0, sgpaosauxC1.a0
D980731.1SGP/AOS/C1 - Aerosol sampling system and nephelometer failuresgpaosC1.a0, sgpaosauxC1.a0
D981203.1SGP/AOS/C1 - 3-wavelength nephelometer data missingsgpaosC1.a0, sgpaosauxC1.a0
D990611.1SGP/AOS/C1 - Ozone Instrument FailuresgpaosC1.a0, sgpaosauxC1.a0
D990614.1SGP/AOS/C1 - Invalid absorption datasgpaosC1.a0, sgpaosauxC1.a0
D990809.1SGP/AOS/C1 - Ozone instrument errorsgpaosC1.a0, sgpaosauxC1.a0


DQRID : D000801.3
Start DateStart TimeEnd DateEnd Time
06/02/2000184206/16/20002234
Subject:
SGP/AOS/C1 - Nephelometer failure
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
An inexperienced AOS technician inadvertently closed off the flow to the dual-nephelometer 
humidograph system during a Friday Preventative Maintenance.  This resulted in liquid 
water getting into the humidified nephelometer.  Flow was restored to the system on Monday, 
but the nephelometers were producing strange data.  A number of tests were performed 
over the next few days to remotely troubleshoot the situation, to no avail.  Eventually, the 
decision was made to pull both nephelometers and return them to Boulder for repair.  
This DQR refers only to the reference nephelometer, which was out of service for 2 periods 
due to 2 separate problems.  This DQR is for the first period, from 000602 (1842 GMT) to 
000616 (2234 GMT).  Light absorption are invalid whenever the reference nephelometer is 
not operational, because those data are required for correction of the absorption data.
Measurements:sgpaosauxC1.a0:
  • TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
  • TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
  • TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
  • TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
  • TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
  • CLAP Signal(BapSignal)
  • CLAP reference signal(BapRef)
  • TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)

sgpaosC1.a0:
  • TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
  • 1 um Absorption coefficient(Bap_I_1um)
  • 10 um Absorption coefficient(Bap_I_10um)
  • TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
  • TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)


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DQRID : D000801.4
Start DateStart TimeEnd DateEnd Time
06/20/2000134007/03/20001833
Subject:
SGP/AOS/C1 - Nephelometer failure
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
An inexperienced AOS technician inadvertently closed off the flow to the dual-nephelometer 
humidograph system during a Friday Preventative Maintenance.  This resulted in liquid 
water getting into the humidified nephelometer.  Flow was restored to the system on Monday, 
but the nephelometers were producing strange data.  A number of tests were performed 
over the next few days to remotely troubleshoot the situation, to no avail.  Eventually, the 
decision was made to pull both nephelometers and return them to Boulder for repair.  
This DQR refers only to the reference nephelometer, which was out of service for 2 periods 
due to 2 separate problems.  This DQR is for the second period, from 000620 (1340 GMT) to 
000703 (1833 GMT).  Light absorption measurements are invalid whenever the reference 
nephelometer is not operational, because those data are required for correction of the 
absorption data.
Measurements:sgpaosauxC1.a0:
  • TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
  • TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
  • TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
  • TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
  • TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
  • CLAP Signal(BapSignal)
  • CLAP reference signal(BapRef)
  • TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)

sgpaosC1.a0:
  • TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
  • 1 um Absorption coefficient(Bap_I_1um)
  • 10 um Absorption coefficient(Bap_I_10um)
  • TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
  • TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)


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DQRID : D000801.5
Start DateStart TimeEnd DateEnd Time
06/02/2000184207/03/20001833
Subject:
SGP/AOS/C1 - Nephelometer failure
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
An inexperienced AOS technician inadvertently closed off the flow to the dual-nephelometer 
humidograph system during a Friday Preventative Maintenance.  This resulted in liquid 
water getting into the humidified nephelometer.  Flow was restored to the system on Monday, 
but the nephelometers were producing strange data.  A number of tests were performed 
over the next few days to remotely troubleshoot the situation, to no avail.  Eventually, the 
decision was made to pull both nephelometers and return them to Boulder for repair.  
This DQR refers only to the humidified nephelometer, which was out of service for the entire 
period from 000602 through 000703.
Measurements:sgpaosauxC1.a0:
  • TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
  • TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
  • TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
  • TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)
  • CLAP Signal(BapSignal)
  • CLAP reference signal(BapRef)

sgpaosC1.a0:
  • TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
  • TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
  • 1 um Absorption coefficient(Bap_I_1um)
  • 10 um Absorption coefficient(Bap_I_10um)
  • TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
  • TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
  • TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)


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DQRID : D020709.3
Start DateStart TimeEnd DateEnd Time
05/23/2002201105/26/20022033
05/27/2002023205/28/20021439
05/29/2002025805/29/20021516
05/29/2002215905/30/20021113
05/31/2002231006/04/20021447
Subject:
SGP/AOS/C1 - AOS Computer Failure
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The AOS computer started to experience periodic failures caused by an aging and failing 
system disk.  Replacement of the AOS computer's system disk occurred between 2-4 June 2002.
Measurements:sgpaosauxC1.a0:
  • TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
  • Radiance neph zero scattering coefficient(Zero530nm)
  • TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
  • Pressure difference across TSI neph.(Line8DeltaP)
  • TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
  • unknown(O3_Cont)
  • TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
  • Relative humidity in main sample manifold heater(Line11RH)
  • Dummy altitude for Zeb(alt)
  • Ozone offset value(O3_Offset)
  • TSI Low RH Neph. 550nm reference intensity(TSISensGrn_LRH)
  • TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
  • Ozone sample pressure(O3_Press)
  • CLAP flow(BapFlow)
  • Main Sample manifold temperature(Line11Temp)
  • Room temperature(RoomTemp)
  • Ozone span concentration(O3_Spn)
  • Flowrate of zero air line 2(ZeroAirFlow)
  • TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
  • TSI neph. rack temperature(CabinetTemp)
  • Pressure transducer V for line 3 (extra line)(Line3Vac)
  • TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
  • TSI High RH Neph. lamp voltage(TSINephLV_HRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
  • Pressure transducer V for line 4 (extra line)(Line4Vac)
  • TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
  • OPC sample flow(OPCFlow)
  • TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
  • TSI CPC saturator temperature(CPCSaturT)
  • TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
  • TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
  • Analog signal from PMS PCASP(OPCLaserVolt)
  • Pressure difference across radiance neph.(Line6DeltaP)
  • TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
  • TSI Low RH Neph. lamp current(TSINephLC_LRH)
  • TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
  • Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
  • Temperature in main sample manifold heater(Line11Heater)
  • CLAP reference signal(BapRef)
  • Mass flow output from line 8 (neph. 2 line)(Line8Flow)
  • Transmittance through CLAP filter(BapFiltr)
  • Temperature in back of Whatlow(WatAmbT)
  • OPC sheath(OPCSheath)
  • TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
  • Ozone zero concentration(O3_Zro)
  • Reference object brightness(Calib530nm)
  • lat(lat)
  • Ozone sample frequency(O3_Samp)
  • Time offset of tweaks from base_time(time_offset)
  • TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
  • Pressure transducer V for line 6 (neph. 1 line)(Line6Vac)
  • TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
  • time(time)
  • TSI Low RH Neph. lamp voltage(TSINephLV_LRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
  • Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
  • Main stack air flow(MainAirFlow)
  • TSI CPC condensor temperature(CPCCondT)
  • Temperature between racks 0 and 1(Cab_4_5_Temp)
  • TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
  • Ozone span value(O3_Span)
  • Pressure transducer V for line 5 (extra line)(Line5Vac)
  • TSI CPC condensor and saturator temperature difference(CPCDeltT)
  • TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
  • TSI High RH Neph. lamp current(TSINephLC_HRH)
  • Ozone line temperature set point(O3_SetPt)
  • Temperature of line 8 air (neph. 2 line)(Line8Temp)
  • base time(base_time)
  • TSI High RH Neph. 550nm reference intensity(TSISensGrn_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
  • Ozone sample temperature(O3_Temp)
  • TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)
  • CLAP Signal(BapSignal)
  • lon(lon)
  • Ozone mode(O3_Mode)

sgpaosC1.a0:
  • CPC Particle concentration(CPCPartConc)
  • lat(lat)
  • PMS PCASP Chan. 7 (0.23 micrometers < Dp < 0.26)(pa23_p26conc)
  • PMS PCASP Chan. 26 (3.00 micrometers < Dp < 3.50)(pa300_p350conc)
  • Temperature in sample line down of heater(SampTemp)
  • PMS PCASP Chan. 0 (Dp > 10 micrometers)(Pa1000Conc)
  • TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
  • lon(lon)
  • base time(base_time)
  • PMS PCASP Chan. 23 1/cm^3 (2.00 micrometers < Dp < 2.30)(pa200_p230conc)
  • TSI Low RH Neph. relative humidity(TSINephRHSamp_LRH)
  • PMS PCASP Chan. 21 (1.60 micrometers < Dp < 1.80)(pa160_p180conc)
  • PMS PCASP Chan. 9 (0.30 micrometers < Dp < 0.35)(pa30_p35conc)
  • TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
  • PMS PCASP Chan. 27 (3.50 micrometers < Dp < 4.00)(pa350_p400conc)
  • PMS PCASP Chan. 13 (0.50 micrometers < Dp < 0.60)(pa50_p60conc)
  • TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
  • TSI Low RH Neph. Pressure(TSINephPres_LRH)
  • Time offset of tweaks from base_time(time_offset)
  • PMS PCASP Chan. 5 (0.18 micrometers < Dp < 0.20)(pa18_p20conc)
  • PMS PCASP Chan. 10 (0.35 micrometers < Dp < 0.40)(pa35_p40conc)
  • TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)
  • Ozone concentration(Ozone)
  • PMS PCASP Chan. 16 (0.80 micrometers < Dp < 0.90)(pa80_p90conc)
  • TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
  • Single wave Neph. pressure(Pres530nm)
  • RH upstream of humidograph(HGupstream_RH)
  • PMS PCASP Chan. 30 (6.50 micrometers < Dp < 8.00)(pa650_p800conc)
  • PMS PCASP Chan. 17 (0.90 micrometers < Dp < 1.00)(pa90_p100conc)
  • PMS PCASP Chan. 3 (0.14 micrometers < Dp < 0.16)(pa14_p16conc)
  • TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
  • TSI High RH Neph. inlet temperature(TSINephTin_HRH)
  • PMS PCASP Chan. 31 (8.00 micrometers < Dp < 10.0)(pa800_p1000conc)
  • TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
  • PMS PCASP Chan. 22 (1.80 micrometers < Dp < 2.00)(pa180_p200conc)
  • PMS PCASP Chan. 24 (2.30 micrometers < Dp < 2.60)(pa230_p260conc)
  • TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
  • TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
  • PMS PCASP Chan. 20 (1.40 micrometers < Dp < 1.60)(pa140_p160conc)
  • PMS PCASP Chan. 14 (0.60 micrometers < Dp < 0.70)(pa60_p70conc)
  • TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)
  • Outdoor air temperature(AmbTemp)
  • Radiance neph. temperature(Neph530Temp)
  • TSI High RH Neph. Pressure(TSINephPres_HRH)
  • PMS PCASP Chan. 15 (0.70 micrometers < Dp < 0.80)(pa70_p80conc)
  • TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
  • TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
  • PMS PCASP Chan. 2 (0.12 micrometers < Dp < 0.14)(pa12_p14conc)
  • 1 um Absorption coefficient(Bap_I_1um)
  • PMS PCASP Chan. 18 (1.00 micrometers < Dp < 1.30)(pa100_p130conc)
  • TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
  • Dummy altitude for Zeb(alt)
  • TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
  • TSI Low RH Neph. inlet temperature(TSINephTin_LRH)
  • PMS PCASP Chan. 11 (0.35 micrometers < Dp < 0.40)(pa40_p45conc)
  • PMS PCASP Chan. 29 (5.00 micrometers < Dp < 6.50)(pa500_p650conc)
  • Temp. downstream of humidograph(HGdownstream_T)
  • TSI Low RH Neph. Sample Temperature(TSINephTSamp_LRH)
  • time(time)
  • PMS PCASP Chan. 28 (4.00 micrometers < Dp < 5.00)(pa400_p500conc)
  • PMS PCASP Chan. 25 (2.60 micrometers < Dp < 3.00)(pa260_p300conc)
  • Relative humidity in sample line down. of heater(SampRH)
  • B_sp, at 530 nm from single wave. neph.(Bscat530nm)
  • TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
  • 10 um Absorption coefficient(Bap_I_10um)
  • TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
  • Temp. upstream of humidograph(HGupstream_T)
  • PMS PCASP Chan. 6 (0.20 micrometers < Dp < 0.23)(pa20_p23conc)
  • PMS PCASP Chan. 19 (1.30 micrometers < Dp < 1.40)(pa130_p140conc)
  • TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
  • PMS PCASP Chan. 1 1/cm^3 (0.10 micrometers < Dp < 0.12)(pa10_p12conc)
  • TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
  • PMS PCASP Chan. 4 (0.16 micrometers < Dp < 0.18)(pa16_p18conc)
  • PMS PCASP Chan. 8 (0.26 micrometers < Dp < 0.30)(pa26_p30conc)
  • RH downstream of humidograph(HGdownstream_RH)
  • Single wave Neph. RH(RH530nm)
  • PMS PCASP Chan. 12 (0.45 micrometers < Dp < 0.50)(pa45_p50conc)


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DQRID : D021007.1
Start DateStart TimeEnd DateEnd Time
01/30/2002000010/01/20021934
Subject:
SGP/AOS/C1 - Ozone instrument out of service
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The ice storm of 30-31 January, 2002 shut down the AOS for ~2 weeks.  A controlled 
power-up of the system found a problem with the ozone monitor.  Smoke was observed to come from 
the ozone instrument, at which time it was shut down.

The ozone monitor was removed from the AOS for remote troubleshooting. The cause of the 
smoke was identified as being from underneath a printed circuit board.  At that point, Site 
Ops staff were requested to send the unit to Boulder for additional troubleshooting.  
NOAA staff received the unit on 20 February 2002.

After a brief inspection, the cause of the smoking was discovered.  A one-half inch hole 
was burned completely through the motherboard.  The determination was made that this could 
not be repaired at the NOAA facility, and a purchase order was initiated to return the 
unit to Dasibi, Inc. (the manufacturer), for repair/replacement of the motherboard.

On 4 March, 2002, NOAA personnel received the OK from ARM to return the instrument to 
Dasibi, Inc. for service.  Dasibi, Inc., received the unit on or around 8 March, 2002.  The 
manufacturer was to test the unit, repair or replace the damaged motherboard, and 
calibrate the unit according to the NIST standard protocol.

On 8 May, 2002, NOAA personnel emailed SGP Site Ops personnel and asked them to check on 
the status of the repair, which was taking longer then expected.   Upon trying to contact 
the manufacturer, it was discovered that they went out of business.  The return of 
instruments from the manufacturer to customers was being handled by a contract company.  The 
ozone monitor arrived back in Boulder, in an unrepaired state, on or about 1 July 2002.

Since there were few other options, NOAA personnel undertook the difficult task of 
repairing the motherboard.  This required the re-routing of several electrical conduits from the 
burned area in the multilayer board to other acceptable places on the board.  This took 
a considerable amount of electronics technician time and effort.  After the motherboard 
was repaired, extensive testing was required to verify that the repair was done 
successfully and that other problems were not caused in the unit by the board burning..

The repair was deemed successful on 24 September, 2002.  The unit was shipped back to the 
SGP site immediately thereafter.  It was installed during a NOAA AOS maintenance visit on 
1 October, 2002.
Measurements:sgpaosauxC1.a0:
  • Ozone sample frequency(O3_Samp)
  • Ozone offset value(O3_Offset)
  • Ozone sample pressure(O3_Press)
  • Ozone span value(O3_Span)
  • Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
  • Ozone sample temperature(O3_Temp)
  • Ozone line temperature set point(O3_SetPt)
  • Ozone span concentration(O3_Spn)
  • Ozone zero concentration(O3_Zro)
  • Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
  • unknown(O3_Cont)
  • Ozone mode(O3_Mode)

sgpaosC1.a0:
  • Ozone concentration(Ozone)


Back To Table of Contents

DQRID : D030210.1
Start DateStart TimeEnd DateEnd Time
12/27/2002180512/31/20021543
Subject:
SGP/AOS/C1  - Data missing
DataStreams:sgpaosC1.00, sgpaosC1.a0, sgpaosauxC1.a0
Description:
The UPS supplying power to the AOS computer failed on Friday, 12/27/2002.  The UPS was 
repaired on Monday 12/30/2002, but the AOS computer was locked up and would not reboot.  
Telephone communication was established with Richard Eagan, ANL, who was able to do a remote 
reboot of the computer using his account.
Measurements:sgpaosauxC1.a0:
  • TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
  • Radiance neph zero scattering coefficient(Zero530nm)
  • TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
  • Pressure difference across TSI neph.(Line8DeltaP)
  • TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
  • unknown(O3_Cont)
  • TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
  • Relative humidity in main sample manifold heater(Line11RH)
  • Dummy altitude for Zeb(alt)
  • Ozone offset value(O3_Offset)
  • TSI Low RH Neph. 550nm reference intensity(TSISensGrn_LRH)
  • TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
  • Ozone sample pressure(O3_Press)
  • CLAP flow(BapFlow)
  • Main Sample manifold temperature(Line11Temp)
  • Room temperature(RoomTemp)
  • Ozone span concentration(O3_Spn)
  • Flowrate of zero air line 2(ZeroAirFlow)
  • TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
  • TSI neph. rack temperature(CabinetTemp)
  • Pressure transducer V for line 3 (extra line)(Line3Vac)
  • TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
  • TSI High RH Neph. lamp voltage(TSINephLV_HRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
  • Pressure transducer V for line 4 (extra line)(Line4Vac)
  • TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
  • OPC sample flow(OPCFlow)
  • TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
  • TSI CPC saturator temperature(CPCSaturT)
  • TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
  • TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
  • Analog signal from PMS PCASP(OPCLaserVolt)
  • Pressure difference across radiance neph.(Line6DeltaP)
  • TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
  • TSI Low RH Neph. lamp current(TSINephLC_LRH)
  • TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
  • Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
  • Temperature in main sample manifold heater(Line11Heater)
  • CLAP reference signal(BapRef)
  • Mass flow output from line 8 (neph. 2 line)(Line8Flow)
  • Transmittance through CLAP filter(BapFiltr)
  • Temperature in back of Whatlow(WatAmbT)
  • OPC sheath(OPCSheath)
  • TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
  • Ozone zero concentration(O3_Zro)
  • Reference object brightness(Calib530nm)
  • lat(lat)
  • Ozone sample frequency(O3_Samp)
  • Time offset of tweaks from base_time(time_offset)
  • TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
  • Pressure transducer V for line 6 (neph. 1 line)(Line6Vac)
  • TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
  • time(time)
  • TSI Low RH Neph. lamp voltage(TSINephLV_LRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
  • Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
  • Main stack air flow(MainAirFlow)
  • TSI CPC condensor temperature(CPCCondT)
  • Temperature between racks 0 and 1(Cab_4_5_Temp)
  • TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
  • Ozone span value(O3_Span)
  • Pressure transducer V for line 5 (extra line)(Line5Vac)
  • TSI CPC condensor and saturator temperature difference(CPCDeltT)
  • TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
  • TSI High RH Neph. lamp current(TSINephLC_HRH)
  • Ozone line temperature set point(O3_SetPt)
  • Temperature of line 8 air (neph. 2 line)(Line8Temp)
  • base time(base_time)
  • TSI High RH Neph. 550nm reference intensity(TSISensGrn_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
  • Ozone sample temperature(O3_Temp)
  • TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)
  • CLAP Signal(BapSignal)
  • lon(lon)
  • Ozone mode(O3_Mode)

sgpaosC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpaosC1.a0:
  • CPC Particle concentration(CPCPartConc)
  • lat(lat)
  • PMS PCASP Chan. 7 (0.23 micrometers < Dp < 0.26)(pa23_p26conc)
  • PMS PCASP Chan. 26 (3.00 micrometers < Dp < 3.50)(pa300_p350conc)
  • Temperature in sample line down of heater(SampTemp)
  • PMS PCASP Chan. 0 (Dp > 10 micrometers)(Pa1000Conc)
  • TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
  • lon(lon)
  • base time(base_time)
  • PMS PCASP Chan. 23 1/cm^3 (2.00 micrometers < Dp < 2.30)(pa200_p230conc)
  • TSI Low RH Neph. relative humidity(TSINephRHSamp_LRH)
  • PMS PCASP Chan. 21 (1.60 micrometers < Dp < 1.80)(pa160_p180conc)
  • PMS PCASP Chan. 9 (0.30 micrometers < Dp < 0.35)(pa30_p35conc)
  • TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
  • PMS PCASP Chan. 27 (3.50 micrometers < Dp < 4.00)(pa350_p400conc)
  • PMS PCASP Chan. 13 (0.50 micrometers < Dp < 0.60)(pa50_p60conc)
  • TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
  • TSI Low RH Neph. Pressure(TSINephPres_LRH)
  • Time offset of tweaks from base_time(time_offset)
  • PMS PCASP Chan. 5 (0.18 micrometers < Dp < 0.20)(pa18_p20conc)
  • PMS PCASP Chan. 10 (0.35 micrometers < Dp < 0.40)(pa35_p40conc)
  • TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)
  • Ozone concentration(Ozone)
  • PMS PCASP Chan. 16 (0.80 micrometers < Dp < 0.90)(pa80_p90conc)
  • TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
  • Single wave Neph. pressure(Pres530nm)
  • RH upstream of humidograph(HGupstream_RH)
  • PMS PCASP Chan. 30 (6.50 micrometers < Dp < 8.00)(pa650_p800conc)
  • PMS PCASP Chan. 17 (0.90 micrometers < Dp < 1.00)(pa90_p100conc)
  • PMS PCASP Chan. 3 (0.14 micrometers < Dp < 0.16)(pa14_p16conc)
  • TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
  • TSI High RH Neph. inlet temperature(TSINephTin_HRH)
  • PMS PCASP Chan. 31 (8.00 micrometers < Dp < 10.0)(pa800_p1000conc)
  • TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
  • PMS PCASP Chan. 22 (1.80 micrometers < Dp < 2.00)(pa180_p200conc)
  • PMS PCASP Chan. 24 (2.30 micrometers < Dp < 2.60)(pa230_p260conc)
  • TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
  • TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
  • PMS PCASP Chan. 20 (1.40 micrometers < Dp < 1.60)(pa140_p160conc)
  • PMS PCASP Chan. 14 (0.60 micrometers < Dp < 0.70)(pa60_p70conc)
  • TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)
  • Outdoor air temperature(AmbTemp)
  • Radiance neph. temperature(Neph530Temp)
  • TSI High RH Neph. Pressure(TSINephPres_HRH)
  • PMS PCASP Chan. 15 (0.70 micrometers < Dp < 0.80)(pa70_p80conc)
  • TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
  • TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
  • PMS PCASP Chan. 2 (0.12 micrometers < Dp < 0.14)(pa12_p14conc)
  • 1 um Absorption coefficient(Bap_I_1um)
  • PMS PCASP Chan. 18 (1.00 micrometers < Dp < 1.30)(pa100_p130conc)
  • TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
  • Dummy altitude for Zeb(alt)
  • TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
  • TSI Low RH Neph. inlet temperature(TSINephTin_LRH)
  • PMS PCASP Chan. 11 (0.35 micrometers < Dp < 0.40)(pa40_p45conc)
  • PMS PCASP Chan. 29 (5.00 micrometers < Dp < 6.50)(pa500_p650conc)
  • Temp. downstream of humidograph(HGdownstream_T)
  • TSI Low RH Neph. Sample Temperature(TSINephTSamp_LRH)
  • time(time)
  • PMS PCASP Chan. 28 (4.00 micrometers < Dp < 5.00)(pa400_p500conc)
  • PMS PCASP Chan. 25 (2.60 micrometers < Dp < 3.00)(pa260_p300conc)
  • Relative humidity in sample line down. of heater(SampRH)
  • B_sp, at 530 nm from single wave. neph.(Bscat530nm)
  • TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
  • 10 um Absorption coefficient(Bap_I_10um)
  • TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
  • Temp. upstream of humidograph(HGupstream_T)
  • PMS PCASP Chan. 6 (0.20 micrometers < Dp < 0.23)(pa20_p23conc)
  • PMS PCASP Chan. 19 (1.30 micrometers < Dp < 1.40)(pa130_p140conc)
  • TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
  • PMS PCASP Chan. 1 1/cm^3 (0.10 micrometers < Dp < 0.12)(pa10_p12conc)
  • TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
  • PMS PCASP Chan. 4 (0.16 micrometers < Dp < 0.18)(pa16_p18conc)
  • PMS PCASP Chan. 8 (0.26 micrometers < Dp < 0.30)(pa26_p30conc)
  • RH downstream of humidograph(HGdownstream_RH)
  • Single wave Neph. RH(RH530nm)
  • PMS PCASP Chan. 12 (0.45 micrometers < Dp < 0.50)(pa45_p50conc)


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DQRID : D040130.1
Start DateStart TimeEnd DateEnd Time
11/21/2003163601/27/20042208
Subject:
SGP/AOS/C1 - Ozone Instrument removed for repair
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The ozone instrument was removed for calibration on 2003 11/21.  It was shipped to Boulder 
and was cleaned and calibrated.  It was sent back to SGP on 2003 12/02, but was damaged 
in transit by FedEx.  The instrument was reinstalled on 2003 12/03 but was found to be 
defective.  Large spikes were observed in the data.  Afetr a few days the instrument was 
removed and shipped to a vendor for repair.  The ozone monitor was returned to service 
after repair at 2004 01/27 (2208 GMT).
Measurements:sgpaosauxC1.a0:
  • Ozone sample frequency(O3_Samp)
  • Ozone offset value(O3_Offset)
  • Ozone sample pressure(O3_Press)
  • Ozone span value(O3_Span)
  • Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
  • Ozone sample temperature(O3_Temp)
  • Ozone line temperature set point(O3_SetPt)
  • Ozone span concentration(O3_Spn)
  • Ozone zero concentration(O3_Zro)
  • Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
  • unknown(O3_Cont)
  • Ozone mode(O3_Mode)

sgpaosC1.a0:
  • Ozone concentration(Ozone)


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DQRID : D041026.3
Start DateStart TimeEnd DateEnd Time
01/10/2004000010/26/20041200
Subject:
SGP/AOS/C1 - PCASP instrument problem
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
PCASP (optical particle counter) gave unusually low aerosol signal counts despite numerous 
attempts to fix the instrument by the mentor and manufacturer.
Measurements:sgpaosauxC1.a0:
  • OPC sheath(OPCSheath)
  • OPC sample flow(OPCFlow)
  • Analog signal from PMS PCASP(OPCLaserVolt)

sgpaosC1.a0:
  • PMS PCASP Chan. 7 (0.23 micrometers < Dp < 0.26)(pa23_p26conc)
  • PMS PCASP Chan. 26 (3.00 micrometers < Dp < 3.50)(pa300_p350conc)
  • PMS PCASP Chan. 28 (4.00 micrometers < Dp < 5.00)(pa400_p500conc)
  • PMS PCASP Chan. 15 (0.70 micrometers < Dp < 0.80)(pa70_p80conc)
  • PMS PCASP Chan. 25 (2.60 micrometers < Dp < 3.00)(pa260_p300conc)
  • PMS PCASP Chan. 0 (Dp > 10 micrometers)(Pa1000Conc)
  • PMS PCASP Chan. 2 (0.12 micrometers < Dp < 0.14)(pa12_p14conc)
  • PMS PCASP Chan. 30 (6.50 micrometers < Dp < 8.00)(pa650_p800conc)
  • PMS PCASP Chan. 6 (0.20 micrometers < Dp < 0.23)(pa20_p23conc)
  • PMS PCASP Chan. 19 (1.30 micrometers < Dp < 1.40)(pa130_p140conc)
  • PMS PCASP Chan. 17 (0.90 micrometers < Dp < 1.00)(pa90_p100conc)
  • PMS PCASP Chan. 18 (1.00 micrometers < Dp < 1.30)(pa100_p130conc)
  • PMS PCASP Chan. 3 (0.14 micrometers < Dp < 0.16)(pa14_p16conc)
  • PMS PCASP Chan. 31 (8.00 micrometers < Dp < 10.0)(pa800_p1000conc)
  • PMS PCASP Chan. 1 1/cm^3 (0.10 micrometers < Dp < 0.12)(pa10_p12conc)
  • PMS PCASP Chan. 23 1/cm^3 (2.00 micrometers < Dp < 2.30)(pa200_p230conc)
  • PMS PCASP Chan. 24 (2.30 micrometers < Dp < 2.60)(pa230_p260conc)
  • PMS PCASP Chan. 21 (1.60 micrometers < Dp < 1.80)(pa160_p180conc)
  • PMS PCASP Chan. 22 (1.80 micrometers < Dp < 2.00)(pa180_p200conc)
  • PMS PCASP Chan. 9 (0.30 micrometers < Dp < 0.35)(pa30_p35conc)
  • PMS PCASP Chan. 27 (3.50 micrometers < Dp < 4.00)(pa350_p400conc)
  • PMS PCASP Chan. 13 (0.50 micrometers < Dp < 0.60)(pa50_p60conc)
  • PMS PCASP Chan. 4 (0.16 micrometers < Dp < 0.18)(pa16_p18conc)
  • PMS PCASP Chan. 20 (1.40 micrometers < Dp < 1.60)(pa140_p160conc)
  • PMS PCASP Chan. 8 (0.26 micrometers < Dp < 0.30)(pa26_p30conc)
  • PMS PCASP Chan. 5 (0.18 micrometers < Dp < 0.20)(pa18_p20conc)
  • PMS PCASP Chan. 14 (0.60 micrometers < Dp < 0.70)(pa60_p70conc)
  • PMS PCASP Chan. 10 (0.35 micrometers < Dp < 0.40)(pa35_p40conc)
  • PMS PCASP Chan. 11 (0.35 micrometers < Dp < 0.40)(pa40_p45conc)
  • PMS PCASP Chan. 16 (0.80 micrometers < Dp < 0.90)(pa80_p90conc)
  • PMS PCASP Chan. 12 (0.45 micrometers < Dp < 0.50)(pa45_p50conc)
  • PMS PCASP Chan. 29 (5.00 micrometers < Dp < 6.50)(pa500_p650conc)


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DQRID : D041026.4
Start DateStart TimeEnd DateEnd Time
11/21/2003160001/28/20040000
Subject:
SGP/AOS/C1 - Ozone instrument removed for repair
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The ozone monitor was removed and sent back to the manufacturer for repair.
Measurements:sgpaosauxC1.a0:
  • Ozone sample frequency(O3_Samp)
  • Ozone offset value(O3_Offset)
  • Ozone sample pressure(O3_Press)
  • Ozone span value(O3_Span)
  • Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
  • Ozone sample temperature(O3_Temp)
  • Ozone line temperature set point(O3_SetPt)
  • Ozone span concentration(O3_Spn)
  • Ozone zero concentration(O3_Zro)
  • Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
  • unknown(O3_Cont)
  • Ozone mode(O3_Mode)

sgpaosC1.a0:
  • Ozone concentration(Ozone)


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DQRID : D041026.5
Start DateStart TimeEnd DateEnd Time
07/28/2004140008/27/20041540
Subject:
SGP/AOS/C1 - Condensation Particle Counter failure
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The CPC signal declined to a low value. The instrument was shipped back to the mentor, 
cleaned and repaired. The instrument inlet was clogged.
Measurements:sgpaosauxC1.a0:
  • TSI CPC saturator temperature(CPCSaturT)
  • TSI CPC condensor and saturator temperature difference(CPCDeltT)
  • TSI CPC condensor temperature(CPCCondT)

sgpaosC1.a0:
  • CPC Particle concentration(CPCPartConc)


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DQRID : D041026.6
Start DateStart TimeEnd DateEnd Time
01/24/2004000002/18/20041800
Subject:
SGP/AOS/C1 - Wet nephelometer problems
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The humidifier tube was coated with mold and had to be replaced. This affects the wet 
nepheleometer measurements and the calculations of the aerosol hygroscopic growth.

The humidifer was cleaned and replaced. A filter was added to the water circulation to 
minimize mold.
Measurements:sgpaosauxC1.a0:
  • TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
  • TSI High RH Neph. lamp voltage(TSINephLV_HRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
  • TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
  • TSI High RH Neph. lamp current(TSINephLC_HRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
  • TSI High RH Neph. 550nm reference intensity(TSISensGrn_HRH)
  • TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
  • TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)

sgpaosC1.a0:
  • TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
  • Temp. downstream of humidograph(HGdownstream_T)
  • TSI High RH Neph. Pressure(TSINephPres_HRH)
  • TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
  • TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
  • RH upstream of humidograph(HGupstream_RH)
  • TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
  • TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
  • Temp. upstream of humidograph(HGupstream_T)
  • TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
  • TSI High RH Neph. inlet temperature(TSINephTin_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
  • TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
  • RH downstream of humidograph(HGdownstream_RH)
  • TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)


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DQRID : D041118.1
Start DateStart TimeEnd DateEnd Time
07/20/2000163005/16/20011430
Subject:
SGP/AOS/C1 - MainAirFlow sensor error
DataStreams:sgpaosauxC1.a0
Description:
The MainAirFlow in the sgpaosauxC1.a0 data files is negative during
this period.  This should not occur.  Nevertheless, the scattering
and absorption data from the corresponding sgpaosC1.a0 files are fine,
so the system was certainly running and the problem was likely just
in the sensor that measured the flow.
Measurements:sgpaosauxC1.a0:
  • Main stack air flow(MainAirFlow)


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DQRID : D980527.4
Start DateStart TimeEnd DateEnd Time
06/30/1997070707/08/19971946
08/27/1997140009/16/19971355
Subject:
SGP/AOS/C1 - Condensation Particle Counter failure
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
During the time periods specified, the AOS Condensation Particle Counter was down for 
maintenance.
Measurements:sgpaosauxC1.a0:
  • TSI CPC saturator temperature(CPCSaturT)
  • TSI CPC condensor and saturator temperature difference(CPCDeltT)
  • TSI CPC condensor temperature(CPCCondT)

sgpaosC1.a0:
  • CPC Particle concentration(CPCPartConc)


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DQRID : D980528.1
Start DateStart TimeEnd DateEnd Time
07/01/1997093607/03/19971556
08/01/1997132908/08/19971348
05/05/1998092606/16/19981505
06/09/1999082407/26/19992205
09/08/2000042610/13/20001630
05/17/2002060205/20/20051847
05/23/2002201105/31/20021258
09/09/2002000010/07/20021905
Subject:
SGP/AOS/C1 - Optical Particle Counter (PCASP-X) down
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The AOS Optical Particle Spectrometer (PCASP-X sizing probe) was down during these 
periods.  This lowers the laser reference voltage and results in inaccurate sizing.
Measurements:sgpaosauxC1.a0:
  • OPC sheath(OPCSheath)
  • OPC sample flow(OPCFlow)
  • Analog signal from PMS PCASP(OPCLaserVolt)

sgpaosC1.a0:
  • PMS PCASP Chan. 7 (0.23 micrometers < Dp < 0.26)(pa23_p26conc)
  • PMS PCASP Chan. 26 (3.00 micrometers < Dp < 3.50)(pa300_p350conc)
  • PMS PCASP Chan. 28 (4.00 micrometers < Dp < 5.00)(pa400_p500conc)
  • PMS PCASP Chan. 15 (0.70 micrometers < Dp < 0.80)(pa70_p80conc)
  • PMS PCASP Chan. 25 (2.60 micrometers < Dp < 3.00)(pa260_p300conc)
  • PMS PCASP Chan. 0 (Dp > 10 micrometers)(Pa1000Conc)
  • PMS PCASP Chan. 2 (0.12 micrometers < Dp < 0.14)(pa12_p14conc)
  • PMS PCASP Chan. 30 (6.50 micrometers < Dp < 8.00)(pa650_p800conc)
  • PMS PCASP Chan. 6 (0.20 micrometers < Dp < 0.23)(pa20_p23conc)
  • PMS PCASP Chan. 19 (1.30 micrometers < Dp < 1.40)(pa130_p140conc)
  • PMS PCASP Chan. 17 (0.90 micrometers < Dp < 1.00)(pa90_p100conc)
  • PMS PCASP Chan. 18 (1.00 micrometers < Dp < 1.30)(pa100_p130conc)
  • PMS PCASP Chan. 3 (0.14 micrometers < Dp < 0.16)(pa14_p16conc)
  • PMS PCASP Chan. 31 (8.00 micrometers < Dp < 10.0)(pa800_p1000conc)
  • PMS PCASP Chan. 1 1/cm^3 (0.10 micrometers < Dp < 0.12)(pa10_p12conc)
  • PMS PCASP Chan. 23 1/cm^3 (2.00 micrometers < Dp < 2.30)(pa200_p230conc)
  • PMS PCASP Chan. 24 (2.30 micrometers < Dp < 2.60)(pa230_p260conc)
  • PMS PCASP Chan. 21 (1.60 micrometers < Dp < 1.80)(pa160_p180conc)
  • PMS PCASP Chan. 22 (1.80 micrometers < Dp < 2.00)(pa180_p200conc)
  • PMS PCASP Chan. 9 (0.30 micrometers < Dp < 0.35)(pa30_p35conc)
  • PMS PCASP Chan. 27 (3.50 micrometers < Dp < 4.00)(pa350_p400conc)
  • PMS PCASP Chan. 13 (0.50 micrometers < Dp < 0.60)(pa50_p60conc)
  • PMS PCASP Chan. 4 (0.16 micrometers < Dp < 0.18)(pa16_p18conc)
  • PMS PCASP Chan. 20 (1.40 micrometers < Dp < 1.60)(pa140_p160conc)
  • PMS PCASP Chan. 8 (0.26 micrometers < Dp < 0.30)(pa26_p30conc)
  • PMS PCASP Chan. 5 (0.18 micrometers < Dp < 0.20)(pa18_p20conc)
  • PMS PCASP Chan. 14 (0.60 micrometers < Dp < 0.70)(pa60_p70conc)
  • PMS PCASP Chan. 10 (0.35 micrometers < Dp < 0.40)(pa35_p40conc)
  • PMS PCASP Chan. 11 (0.35 micrometers < Dp < 0.40)(pa40_p45conc)
  • PMS PCASP Chan. 16 (0.80 micrometers < Dp < 0.90)(pa80_p90conc)
  • PMS PCASP Chan. 12 (0.45 micrometers < Dp < 0.50)(pa45_p50conc)
  • PMS PCASP Chan. 29 (5.00 micrometers < Dp < 6.50)(pa500_p650conc)


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DQRID : D980528.10
Start DateStart TimeEnd DateEnd Time
12/12/1997202312/15/19971834
Subject:
SGP/AOS/C1 - Instrument communications problems
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
Several of the AOS instruments apparently lost communications with the AOS computer during 
this period.  These instruments were the TSI 3-wavelength nephelometer, the PSAP light 
absorption photometer, and the Dasibi ozone instrument.
Measurements:sgpaosauxC1.a0:
  • TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
  • TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
  • Pressure difference across TSI neph.(Line8DeltaP)
  • Transmittance through CLAP filter(BapFiltr)
  • TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
  • Ozone zero concentration(O3_Zro)
  • unknown(O3_Cont)
  • TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
  • Ozone sample frequency(O3_Samp)
  • Ozone offset value(O3_Offset)
  • TSI Low RH Neph. 550nm reference intensity(TSISensGrn_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
  • TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
  • Ozone sample pressure(O3_Press)
  • TSI Low RH Neph. lamp voltage(TSINephLV_LRH)
  • Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
  • TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
  • CLAP flow(BapFlow)
  • Ozone span concentration(O3_Spn)
  • TSI neph. rack temperature(CabinetTemp)
  • TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
  • TSI High RH Neph. lamp voltage(TSINephLV_HRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
  • Ozone span value(O3_Span)
  • TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
  • TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
  • TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
  • Ozone line temperature set point(O3_SetPt)
  • TSI High RH Neph. lamp current(TSINephLC_HRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
  • TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
  • TSI High RH Neph. 550nm reference intensity(TSISensGrn_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
  • Ozone sample temperature(O3_Temp)
  • TSI Low RH Neph. lamp current(TSINephLC_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
  • TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
  • Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
  • TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)
  • CLAP Signal(BapSignal)
  • CLAP reference signal(BapRef)
  • Ozone mode(O3_Mode)

sgpaosC1.a0:
  • TSI High RH Neph. Pressure(TSINephPres_HRH)
  • TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
  • TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
  • 1 um Absorption coefficient(Bap_I_1um)
  • TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
  • TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
  • TSI Low RH Neph. relative humidity(TSINephRHSamp_LRH)
  • TSI Low RH Neph. inlet temperature(TSINephTin_LRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
  • TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
  • TSI Low RH Neph. Pressure(TSINephPres_LRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)
  • Ozone concentration(Ozone)
  • TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
  • TSI Low RH Neph. Sample Temperature(TSINephTSamp_LRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
  • TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
  • 10 um Absorption coefficient(Bap_I_10um)
  • TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
  • TSI High RH Neph. inlet temperature(TSINephTin_HRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
  • TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)


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DQRID : D980528.2
Start DateStart TimeEnd DateEnd Time
07/29/1997134007/31/19972236
Subject:
SGP/AOS/C1 - 3-wavelength nephelometer data missing
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The AOS TSI 3-wavelength nephelometer lost communications with the AOS data system during 
this period.  Cause of the communications break is unknown.
Measurements:sgpaosauxC1.a0:
  • TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
  • TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
  • TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
  • TSI Low RH Neph. 550nm reference intensity(TSISensGrn_LRH)
  • TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
  • TSI Low RH Neph. lamp voltage(TSINephLV_LRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
  • TSI High RH Neph. lamp voltage(TSINephLV_HRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
  • TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
  • TSI High RH Neph. lamp current(TSINephLC_HRH)
  • TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
  • TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
  • TSI High RH Neph. 550nm reference intensity(TSISensGrn_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
  • TSI Low RH Neph. lamp current(TSINephLC_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
  • TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)

sgpaosC1.a0:
  • TSI High RH Neph. Pressure(TSINephPres_HRH)
  • TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
  • TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
  • TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
  • TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
  • TSI Low RH Neph. relative humidity(TSINephRHSamp_LRH)
  • TSI Low RH Neph. inlet temperature(TSINephTin_LRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
  • TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
  • TSI Low RH Neph. Pressure(TSINephPres_LRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
  • TSI Low RH Neph. Sample Temperature(TSINephTSamp_LRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
  • Single wave Neph. pressure(Pres530nm)
  • TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
  • TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
  • TSI High RH Neph. inlet temperature(TSINephTin_HRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
  • TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)
  • Single wave Neph. RH(RH530nm)
  • Radiance neph. temperature(Neph530Temp)


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DQRID : D980528.6
Start DateStart TimeEnd DateEnd Time
08/29/1997134809/02/19971326
Subject:
SGP/AOS/C1 - Ozone instrument left in span mode
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
AOS Ozone instrument was left in span mode over the weekend.  Span value was logged during 
this period.
Measurements:sgpaosauxC1.a0:
  • Ozone sample frequency(O3_Samp)
  • Ozone offset value(O3_Offset)
  • Ozone sample pressure(O3_Press)
  • Ozone span value(O3_Span)
  • Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
  • Ozone sample temperature(O3_Temp)
  • Ozone line temperature set point(O3_SetPt)
  • Ozone span concentration(O3_Spn)
  • Ozone zero concentration(O3_Zro)
  • Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
  • unknown(O3_Cont)
  • Ozone mode(O3_Mode)

sgpaosC1.a0:
  • Ozone concentration(Ozone)


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DQRID : D980528.7
Start DateStart TimeEnd DateEnd Time
09/15/1997154009/16/19971420
Subject:
SGP/AOS/C1 - Line 8 bypass in wrong position
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The Line 8 bypass valve was stuck in the wrong position.  Consequently, air was not being 
drawn through the TSI 3-wavelength nephelometer and the PSAP light absorption photometer, 
and thus they were not measuring ambient (outdoor) aerosols.
Measurements:sgpaosauxC1.a0:
  • TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
  • Transmittance through CLAP filter(BapFiltr)
  • TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
  • TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
  • TSI Low RH Neph. 550nm reference intensity(TSISensGrn_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
  • TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
  • TSI Low RH Neph. lamp voltage(TSINephLV_LRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
  • CLAP flow(BapFlow)
  • TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
  • TSI High RH Neph. lamp voltage(TSINephLV_HRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
  • TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
  • TSI High RH Neph. lamp current(TSINephLC_HRH)
  • TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
  • TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
  • TSI High RH Neph. 550nm reference intensity(TSISensGrn_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
  • TSI Low RH Neph. lamp current(TSINephLC_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
  • TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)
  • CLAP reference signal(BapRef)
  • CLAP Signal(BapSignal)

sgpaosC1.a0:
  • TSI High RH Neph. Pressure(TSINephPres_HRH)
  • TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
  • TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
  • 1 um Absorption coefficient(Bap_I_1um)
  • TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
  • TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
  • TSI Low RH Neph. relative humidity(TSINephRHSamp_LRH)
  • TSI Low RH Neph. inlet temperature(TSINephTin_LRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
  • TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
  • TSI Low RH Neph. Pressure(TSINephPres_LRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
  • TSI Low RH Neph. Sample Temperature(TSINephTSamp_LRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
  • TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
  • 10 um Absorption coefficient(Bap_I_10um)
  • TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
  • TSI High RH Neph. inlet temperature(TSINephTin_HRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
  • TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)


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DQRID : D980528.8
Start DateStart TimeEnd DateEnd Time
09/23/1997144009/24/19971700
Subject:
SGP/AOS/C1 - Light absorption photometer (PSAP) error
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The AOS continuous light absorption photometer (PSAP) showed inaccurate data during this 
period due to a filter being inserted into the optical assembly incorrectly.
Measurements:sgpaosauxC1.a0:
  • Transmittance through CLAP filter(BapFiltr)
  • CLAP Signal(BapSignal)
  • CLAP reference signal(BapRef)
  • CLAP flow(BapFlow)

sgpaosC1.a0:
  • 10 um Absorption coefficient(Bap_I_10um)
  • 1 um Absorption coefficient(Bap_I_1um)


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DQRID : D980528.9
Start DateStart TimeEnd DateEnd Time
11/28/1997203012/01/19971514
03/20/1998184903/23/19982147
Subject:
SGP/AOS/C1 - Ozone Instrument Communication Failure
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The AOS Ozone instrument apparently lost communications with the AOS computer during these 
periods.
Measurements:sgpaosauxC1.a0:
  • Ozone sample frequency(O3_Samp)
  • Ozone offset value(O3_Offset)
  • Ozone sample pressure(O3_Press)
  • Ozone span value(O3_Span)
  • Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
  • Ozone sample temperature(O3_Temp)
  • Ozone line temperature set point(O3_SetPt)
  • Ozone span concentration(O3_Spn)
  • Ozone zero concentration(O3_Zro)
  • Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
  • unknown(O3_Cont)
  • Ozone mode(O3_Mode)

sgpaosC1.a0:
  • Ozone concentration(Ozone)


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DQRID : D980529.1
Start DateStart TimeEnd DateEnd Time
01/02/1998163401/08/19981634
Subject:
SGP/AOS/C1 - Ozone Instrument data incorrect
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
A filter of the wrong type was placed in the ozone instrument intake line.  This filter 
destroys ozone, and consequently the measured ozone values during this period are 
abnormally low.
Measurements:sgpaosauxC1.a0:
  • Ozone offset value(O3_Offset)
  • Ozone zero concentration(O3_Zro)
  • Ozone span concentration(O3_Spn)
  • Ozone span value(O3_Span)
  • Ozone mode(O3_Mode)

sgpaosC1.a0:
  • Ozone concentration(Ozone)


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DQRID : D980731.1
Start DateStart TimeEnd DateEnd Time
07/10/1998043507/28/19982053
Subject:
SGP/AOS/C1 - Aerosol sampling system and nephelometer failure
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The electronic valve that switches the aerosol sampling system from sampling the total 
aerosol (D<10 um) to the submicrometer (D<1 um) aerosol began having intermittent 
positioning problems.  All 3-wavelength nephelometer and light absorption photometer data collected 
during this time period should be viewed as suspect, since we can't be sure what 
particle size range was being sampled at any time.  During this interval, the nephelometer lamp 
became unstable and finally blew, giving no nephelometer data for the end of this period. 
 The period of lamp failure in the AOS data files can be recognized by prolonged periods 
of missing value codes for aerosol scattering and nephelometer housekeeping channels.
Measurements:sgpaosauxC1.a0:
  • TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
  • Transmittance through CLAP filter(BapFiltr)
  • TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
  • TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
  • TSI Low RH Neph. 550nm reference intensity(TSISensGrn_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
  • TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
  • TSI Low RH Neph. lamp voltage(TSINephLV_LRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
  • CLAP flow(BapFlow)
  • TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
  • TSI High RH Neph. lamp voltage(TSINephLV_HRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
  • TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
  • TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
  • TSI High RH Neph. lamp current(TSINephLC_HRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
  • TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
  • TSI High RH Neph. 550nm reference intensity(TSISensGrn_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
  • TSI Low RH Neph. lamp current(TSINephLC_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
  • TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)
  • CLAP reference signal(BapRef)
  • CLAP Signal(BapSignal)

sgpaosC1.a0:
  • TSI High RH Neph. Pressure(TSINephPres_HRH)
  • TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
  • TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
  • 1 um Absorption coefficient(Bap_I_1um)
  • TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
  • TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
  • TSI Low RH Neph. relative humidity(TSINephRHSamp_LRH)
  • TSI Low RH Neph. inlet temperature(TSINephTin_LRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
  • TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
  • TSI Low RH Neph. Pressure(TSINephPres_LRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
  • TSI Low RH Neph. Sample Temperature(TSINephTSamp_LRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
  • Single wave Neph. pressure(Pres530nm)
  • TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
  • 10 um Absorption coefficient(Bap_I_10um)
  • TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
  • TSI High RH Neph. inlet temperature(TSINephTin_HRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
  • TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)
  • Single wave Neph. RH(RH530nm)
  • Radiance neph. temperature(Neph530Temp)


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DQRID : D981203.1
Start DateStart TimeEnd DateEnd Time
11/05/1998155811/12/19980501
Subject:
SGP/AOS/C1 - 3-wavelength nephelometer data missing
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
The AOS data system lost communications initially with the 3-wavelength TSI nephelometer.  
A communications port on the Sun workstation became locked, and attempts to unlock it 
were unsuccesful.  Stopping and restarting the data collection software did not solve the 
problem. Missing value codes were being generated for all TSI nephelometer measurements 
and parameters.  The decision was made to reboot the workstation.  On 981110, at 1555 GMT, 
the workstation was rebooted.  We discovered then that we did not have the proper root 
user password to log back onto the system and restart the software.  From 981110 (1555GMT) 
to 981112 (0501GMT) no data were being logged by the AOS data system.
Measurements:sgpaosauxC1.a0:
  • TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
  • TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
  • TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
  • TSI Low RH Neph. 550nm reference intensity(TSISensGrn_LRH)
  • TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
  • TSI Low RH Neph. lamp voltage(TSINephLV_LRH)
  • TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
  • TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)
  • TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
  • TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
  • TSI High RH Neph. lamp voltage(TSINephLV_HRH)
  • TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
  • TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
  • TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
  • TSI High RH Neph. lamp current(TSINephLC_HRH)
  • TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
  • TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
  • TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
  • TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
  • TSI High RH Neph. 550nm reference intensity(TSISensGrn_HRH)
  • TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
  • TSI Low RH Neph. lamp current(TSINephLC_LRH)
  • TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
  • TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
  • TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)

sgpaosC1.a0:
  • TSI High RH Neph. Pressure(TSINephPres_HRH)
  • TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
  • TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
  • TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
  • TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
  • TSI Low RH Neph. relative humidity(TSINephRHSamp_LRH)
  • TSI Low RH Neph. inlet temperature(TSINephTin_LRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
  • TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
  • TSI Low RH Neph. Pressure(TSINephPres_LRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)
  • TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
  • TSI Low RH Neph. Sample Temperature(TSINephTSamp_LRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
  • TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
  • Single wave Neph. pressure(Pres530nm)
  • TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
  • TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
  • TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
  • TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
  • TSI High RH Neph. inlet temperature(TSINephTin_HRH)
  • TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
  • TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
  • TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
  • TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
  • TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)
  • Single wave Neph. RH(RH530nm)
  • Radiance neph. temperature(Neph530Temp)


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DQRID : D990611.1
Start DateStart TimeEnd DateEnd Time
05/07/1999155605/14/19991445
Subject:
SGP/AOS/C1 - Ozone Instrument Failure
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
A malfunction occurred with the AOS surface ozone instrument during the period 990507 1556 
GMT to 990514 1445 GMT.  The instrument reported an ozone concentration of 9.91e-01 ppm 
(991 ppb) continuously during this time.  Quality checking of the data the following week 
revealed that the problem began at about the time weekly maintenance check was made on 
Friday.  The problem continued until the next weekly maintenance check was done.  Site Ops 
was notified by the mentor of the problem on Friday, 5/14/99, and a technician was sent 
to inspect the system.  No switches on the instrument front panel were found in the wrong 
position (for example, if the instrument was inadvertantly left in a calibration mode).  
By the time the technician arrived at the trailer, the instrument appeared to be working 
correctly.  No explanation is given as to why these erroneous values were being 
generated by the ozone instrument, except that possibly it locked up with the throwing of the 
weekly preventative maintenance switch and this problem was not corrected until the same 
switch was thrown the following week.
Measurements:sgpaosauxC1.a0:
  • Ozone sample frequency(O3_Samp)
  • Ozone offset value(O3_Offset)
  • Ozone sample pressure(O3_Press)
  • Ozone span value(O3_Span)
  • Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
  • Ozone sample temperature(O3_Temp)
  • Ozone line temperature set point(O3_SetPt)
  • Ozone span concentration(O3_Spn)
  • Ozone zero concentration(O3_Zro)
  • Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
  • unknown(O3_Cont)
  • Ozone mode(O3_Mode)

sgpaosC1.a0:
  • Ozone concentration(Ozone)


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DQRID : D990614.1
Start DateStart TimeEnd DateEnd Time
05/21/1999141305/27/19991819
Subject:
SGP/AOS/C1 - Invalid absorption data
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
During the period noted, a valve position error with the 1-um/10-um impactor switching 
valve occurred.  The result of this error was to invalidate all switched data.  The software 
correctly inserted missing value codes in the nephelometer data, but the PSAP light 
absorption photometer for some reason reported a constant value over this period.
Measurements:sgpaosauxC1.a0:
  • Transmittance through CLAP filter(BapFiltr)
  • CLAP Signal(BapSignal)
  • CLAP reference signal(BapRef)
  • CLAP flow(BapFlow)

sgpaosC1.a0:
  • 10 um Absorption coefficient(Bap_I_10um)
  • 1 um Absorption coefficient(Bap_I_1um)


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DQRID : D990809.1
Start DateStart TimeEnd DateEnd Time
06/18/1999162806/22/19991537
06/25/1999163006/28/19991343
Subject:
SGP/AOS/C1 - Ozone instrument error
DataStreams:sgpaosC1.a0, sgpaosauxC1.a0
Description:
A switch on the front panel of the ozone instrument was left in the wrong position.  This 
resulted in a bad value for ozone concentration being logged for these periods.
Measurements:sgpaosauxC1.a0:
  • Ozone sample frequency(O3_Samp)
  • Ozone offset value(O3_Offset)
  • Ozone sample pressure(O3_Press)
  • Ozone span value(O3_Span)
  • Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
  • Ozone sample temperature(O3_Temp)
  • Ozone line temperature set point(O3_SetPt)
  • Ozone span concentration(O3_Spn)
  • Ozone zero concentration(O3_Zro)
  • Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
  • unknown(O3_Cont)
  • Ozone mode(O3_Mode)

sgpaosC1.a0:
  • Ozone concentration(Ozone)


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