Data Quality Reports for Session: 111711 User: troyan Completed: 04/28/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D061114.2TWP/MWR/C1 - Radiometer failuretwpmwrC1.00, twpmwrlosC1.b1, twpmwrtipC1.a1
D070308.3TWP/SONDE/C2 - Surface Temperature IncorrecttwpsondewnpnC2.b1
D070308.4TWP/SONDE/C2 - Surface RH value incorrecttwpsondewnpnC2.b1
D070313.2TWP/SONDE/C2 - Surface RH value incorrecttwpsondewnpnC2.b1
D070313.3TWP/SONDE/C1 - Surface RH value incorrecttwpsondewnpnC1.b1
D070329.2TWP/SONDE/C2 - Surface RH Value incorrecttwpsondewnpnC2.b1
D070404.1TWP/SONDE/C2 - Surface RH too hightwpsondewnpnC2.b1
D070409.1TWP/SMET/C1 - Upper winds failuretwpsmet60sC1.b1
D070412.3TWP/MWR/C1/C2 - Sun in the field of viewtwpmwrlosC1.b1, twpmwrlosC2.b1, twpmwrtipC1.a1, twpmwrtipC2.a1
D070428.1TWP/SONDE/C2 - Broken temperature sensor at launchtwpsondewnpnC2.b1
D070501.2TWP/SONDE/C2 - Broken temperature sensor at launchtwpsondewnpnC2.b1
D070510.5TWP/SMET/C2 - Lower windspeed sensor questionabletwpsmet60sC2.b1
D070520.1TWP/SMET/C2 - Lower Wind Sensor Direction Incorrecttwpsmet60sC2.b1
D070613.1TWP/MWR/C1 - Intermittent datatwpmwrlosC1.b1, twpmwrtipC1.a1
D071208.1TWP/MWR/C1 - Incorrect ambient temperature readingstwpmwrlosC1.b1, twpmwrtipC1.a1
D071219.1TWP/SMET/C2 - Lower Wind Speed Data Suspecttwpsmet60sC2.b1


DQRID : D061114.2
Start DateStart TimeEnd DateEnd Time
10/09/2006100001/30/20070457
Subject:
TWP/MWR/C1 - Radiometer failure
DataStreams:twpmwrC1.00, twpmwrlosC1.b1, twpmwrtipC1.a1
Description:
The instrument stopped responding and had to be powered off. Suspect cause of failure is a 
faulty digital board.
Measurements:twpmwrC1.00:
  • null(Raw data stream - documentation not supported)
twpmwrlosC1.b1:
  • Mixer kinetic (physical) temperature(tkxc)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • IR Brightness Temperature(ir_temp)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Actual Azimuth(actaz)
  • 23.8 GHz Blackbody signal(bb23)
  • Blackbody kinetic temperature(tkbb)
  • lat(lat)
  • 31.4 GHz blackbody(bb31)
  • (tknd)
  • 31.4 GHz sky signal(sky31)
  • base time(base_time)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Dummy altitude for Zeb(alt)
  • Actual elevation angle(actel)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • MWR column precipitable water vapor(vap)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Ambient temperature(tkair)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Time offset of tweaks from base_time(time_offset)
  • Averaged total liquid water along LOS path(liq)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • 23.8 GHz sky signal(sky23)
  • lon(lon)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
twpmwrtipC1.a1:
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 31.4 GHz goodness-of-fit coefficient(31r)
  • 31.4 GHz blackbody(31bb)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • lat(lat)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • 23.8 GHz noise diode calib (injection temp) at Tkxc(23ndiode)
  • Actual elevation angle(actel)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • Tip configuration number(tipn)
  • 23.8 GHz Blackbody signal(23bb)
  • Mixer kinetic (physical) temperature(tkxc)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • 31.4 GHz blackbody signal(31tipbb)
  • base time(base_time)
  • IR Brightness Temperature(ir_temp)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 23.8 GHz calibration curve slope(23gain)
  • Airmass value(airm)
  • 31.4 GHz sky signal(tipsky31)
  • 23.8 GHz Blackbody signal(bb23)
  • 23.8 GHz blackbody signal(23tipbb)
  • Ambient temperature(tkair)
  • Time offset of tweaks from base_time(time_offset)
  • 31.4 GHz noise diode calib adjusted to tknd_nom and low_pass filltered(31expave)
  • lon(lon)
  • (tknd)
  • 23.8 GHz blackbody+noise injection signal(23bbn)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 23.8 GHz calibration curve offset(23tbzenith)
  • Blackbody kinetic temperature(tkbb)
  • 31.4 GHz sky signal+noise injection signal(31tipskynd)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • 31.4 GHz calibration curve offset(31tbzenith)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz sky signal(31tipsky)
  • 23.8 GHz sky signal(23tipsky)
  • 23.8 GHz sky signal(tipsky23)
  • Dummy altitude for Zeb(alt)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 23.8 GHz goodness-of-fit coefficient(23r)
  • 31.4 GHz noise diode calib (injection temp) at Tkxc(31ndiode)
  • 31.4 GHz blackbody+noise injection signal(31bbn)
  • 31.4 GHz calibration curve slope(31gain)
  • 31.4 GHz blackbody(bb31)
  • Blackbody temperature 1(tkbb1)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • 23.8 GHz noise diode calib adjusted to tknd_nom and low_pass filltered(23expave)
  • Blackbody temperature 2(tkbb2)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • 23.8 GHz sky signal+noise injection signal(23tipskynd)
  • Actual Azimuth(actaz)

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DQRID : D070308.3
Start DateStart TimeEnd DateEnd Time
01/02/2007112801/02/20071129
Subject:
TWP/SONDE/C2 - Surface Temperature Incorrect
DataStreams:twpsondewnpnC2.b1
Description:
The first two temperature values in the datafile are incorrect.  It appears that the 
observer mis-typed the surface temperature as -27 instead of +27.  The next value was 8 which 
is also incorrect and was caused by the system interpolating from the incorrect surface 
value and what the sonde temperature sensor was reading.
Measurements:twpsondewnpnC2.b1:
  • Dry bulb temperature(tdry)

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DQRID : D070308.4
Start DateStart TimeEnd DateEnd Time
01/23/2007113001/23/20071131
Subject:
TWP/SONDE/C2 - Surface RH value incorrect
DataStreams:twpsondewnpnC2.b1
Description:
The surface RH value was incorrect.  It appears the observer mis-typed 70 instead of 80.  
This error also caused the dew point temperature to be incorrect.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

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DQRID : D070313.2
Start DateStart TimeEnd DateEnd Time
03/08/2007235003/08/20072353
Subject:
TWP/SONDE/C2 - Surface RH value incorrect
DataStreams:twpsondewnpnC2.b1
Description:
The surface RH was reproted as 78%.  The value should have been in the low 50's.  It 
appears the observer did not allow the sonde to equilibrate to ambient conditions before 
taking the reading.  This error also caused an incorrect dew point.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

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DQRID : D070313.3
Start DateStart TimeEnd DateEnd Time
03/08/2007000003/08/20070001
Subject:
TWP/SONDE/C1 - Surface RH value incorrect
DataStreams:twpsondewnpnC1.b1
Description:
The surface RH value of 77% when the value should have been in the low 60's.  It appears 
the observers did not allow the sonde to equilibrate to ambient conditions before 
collecting the surface data.  This error also caused the dew point to be incorrect.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

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DQRID : D070329.2
Start DateStart TimeEnd DateEnd Time
03/28/2007231903/28/20072320
Subject:
TWP/SONDE/C2 - Surface RH Value incorrect
DataStreams:twpsondewnpnC2.b1
Description:
The surface value entered by the observers for RH (96%) is incorrect.  At the ascent time 
listed in the .ptu file the readings by the Sonde were around 65%.  This low RH value is 
supported by the nearby SMET tower RH reading of 71.8%.  This also caused the surface dew 
point to be incorrect.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

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DQRID : D070404.1
Start DateStart TimeEnd DateEnd Time
04/03/2007233004/03/20072331
Subject:
TWP/SONDE/C2 - Surface RH too high
DataStreams:twpsondewnpnC2.b1
Description:
The surface Rh was entered as 94%.  The ascent time has 72% and this value is supported by 
RH values from the nearby SMET system.  This error also will affect the dew point.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

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DQRID : D070409.1
Start DateStart TimeEnd DateEnd Time
03/19/2007000006/12/20070406
Subject:
TWP/SMET/C1 - Upper winds failure
DataStreams:twpsmet60sC1.b1
Description:
The upper wind instrument was inoperative resulting in constant wind direction and speed.  
A failed cable was replaced.
Measurements:twpsmet60sC1.b1:
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 speed minimum(wind1_spd_min)

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DQRID : D070412.3
Start DateStart TimeEnd DateEnd Time
03/07/2007000004/02/20072359
Subject:
TWP/MWR/C1/C2 - Sun in the field of view
DataStreams:twpmwrlosC1.b1, twpmwrlosC2.b1, twpmwrtipC1.a1, twpmwrtipC2.a1
Description:
Every day between 3/7 and 4/2 around noon local time there is an increase in the 
brightness temperatures due to the sun in the field of vie of the radiometer.
Measurements:twpmwrlosC2.b1:
  • 31.4 GHz sky signal(sky31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • MWR column precipitable water vapor(vap)
  • 23.8 GHz sky signal(sky23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Averaged total liquid water along LOS path(liq)
twpmwrlosC1.b1:
  • MWR column precipitable water vapor(vap)
  • 31.4 GHz sky signal(sky31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Averaged total liquid water along LOS path(liq)
  • 23.8 GHz sky signal(sky23)
twpmwrtipC1.a1:
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
twpmwrtipC2.a1:
  • 31.4 GHz sky signal(tipsky31)
  • 23.8 GHz sky signal(tipsky23)

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DQRID : D070428.1
Start DateStart TimeEnd DateEnd Time
04/27/2007114004/27/20071420
Subject:
TWP/SONDE/C2 - Broken temperature sensor at launch
DataStreams:twpsondewnpnC2.b1
Description:
Temperature sensor broken at launch.  All thermodynamic values are incorrect.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)
  • Wind Direction(deg)

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DQRID : D070501.2
Start DateStart TimeEnd DateEnd Time
04/30/2007235905/01/20070200
Subject:
TWP/SONDE/C2 - Broken temperature sensor at launch
DataStreams:twpsondewnpnC2.b1
Description:
The temperature sensor on this radiosonde broke after launch.  All the temperature-related 
data are incorrect.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • Surface dew point temperature(dp)

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DQRID : D070510.5
Start DateStart TimeEnd DateEnd Time
04/05/2007000008/19/20072135
Subject:
TWP/SMET/C2 - Lower windspeed sensor questionable
DataStreams:twpsmet60sC2.b1
Description:
Lower wind speed sensor had degraded bearings.  This sensor was reporting as much as 0.4 
m/s lower values than the upper sensors when the winds were 2 m/s or below.  The sensor 
was replaced.
Measurements:twpsmet60sC2.b1:
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 speed minimum(wind2_spd_min)

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DQRID : D070520.1
Start DateStart TimeEnd DateEnd Time
05/11/2007000005/22/20070047
Subject:
TWP/SMET/C2 - Lower Wind Sensor Direction Incorrect
DataStreams:twpsmet60sC2.b1
Description:
Wind directions between lower and upper anemometers were displaced by approximately 45 
degrees from 05/10/2007 through 05/21/2007 when a new sensor was installed to replace a 
failing sensor.  The new sensor direction data incorrect.
Measurements:twpsmet60sC2.b1:
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #2 direction vector average(wind2_dir_vec_avg)

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DQRID : D070613.1
Start DateStart TimeEnd DateEnd Time
06/12/2007070006/13/20072000
06/16/2007210006/17/20072100
Subject:
TWP/MWR/C1 - Intermittent data
DataStreams:twpmwrlosC1.b1, twpmwrtipC1.a1
Description:
After a computer change the MWR program did not restart properly.  Data are intermittent 
between 6/12 and 6/17.
Measurements:twpmwrlosC1.b1:
  • Mixer kinetic (physical) temperature(tkxc)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • IR Brightness Temperature(ir_temp)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Actual Azimuth(actaz)
  • 23.8 GHz Blackbody signal(bb23)
  • Blackbody kinetic temperature(tkbb)
  • lat(lat)
  • 31.4 GHz blackbody(bb31)
  • (tknd)
  • 31.4 GHz sky signal(sky31)
  • base time(base_time)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Dummy altitude for Zeb(alt)
  • Actual elevation angle(actel)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • MWR column precipitable water vapor(vap)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Ambient temperature(tkair)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Time offset of tweaks from base_time(time_offset)
  • Averaged total liquid water along LOS path(liq)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • 23.8 GHz sky signal(sky23)
  • lon(lon)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
twpmwrtipC1.a1:
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 31.4 GHz goodness-of-fit coefficient(31r)
  • 31.4 GHz blackbody(31bb)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • lat(lat)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • 23.8 GHz noise diode calib (injection temp) at Tkxc(23ndiode)
  • Actual elevation angle(actel)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • Tip configuration number(tipn)
  • 23.8 GHz Blackbody signal(23bb)
  • Mixer kinetic (physical) temperature(tkxc)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • 31.4 GHz blackbody signal(31tipbb)
  • base time(base_time)
  • IR Brightness Temperature(ir_temp)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 23.8 GHz calibration curve slope(23gain)
  • Airmass value(airm)
  • 31.4 GHz sky signal(tipsky31)
  • 23.8 GHz Blackbody signal(bb23)
  • 23.8 GHz blackbody signal(23tipbb)
  • Ambient temperature(tkair)
  • Time offset of tweaks from base_time(time_offset)
  • 31.4 GHz noise diode calib adjusted to tknd_nom and low_pass filltered(31expave)
  • lon(lon)
  • (tknd)
  • 23.8 GHz blackbody+noise injection signal(23bbn)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 23.8 GHz calibration curve offset(23tbzenith)
  • Blackbody kinetic temperature(tkbb)
  • 31.4 GHz sky signal+noise injection signal(31tipskynd)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • 31.4 GHz calibration curve offset(31tbzenith)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz sky signal(31tipsky)
  • 23.8 GHz sky signal(23tipsky)
  • 23.8 GHz sky signal(tipsky23)
  • Dummy altitude for Zeb(alt)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 23.8 GHz goodness-of-fit coefficient(23r)
  • 31.4 GHz noise diode calib (injection temp) at Tkxc(31ndiode)
  • 31.4 GHz blackbody+noise injection signal(31bbn)
  • 31.4 GHz calibration curve slope(31gain)
  • 31.4 GHz blackbody(bb31)
  • Blackbody temperature 1(tkbb1)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • 23.8 GHz noise diode calib adjusted to tknd_nom and low_pass filltered(23expave)
  • Blackbody temperature 2(tkbb2)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • 23.8 GHz sky signal+noise injection signal(23tipskynd)
  • Actual Azimuth(actaz)

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DQRID : D071208.1
Start DateStart TimeEnd DateEnd Time
11/21/2007000012/11/20070355
Subject:
TWP/MWR/C1 - Incorrect ambient temperature readings
DataStreams:twpmwrlosC1.b1, twpmwrtipC1.a1
Description:
Starting on 11/21 the ambient temperature readings are intermittent and have spikes.
Site operators replaced the dew-blower on 12/11 and readings came back to normal
Measurements:twpmwrlosC1.b1:
  • Ambient temperature(tkair)
twpmwrtipC1.a1:
  • Ambient temperature(tkair)

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DQRID : D071219.1
Start DateStart TimeEnd DateEnd Time
05/22/2007004808/19/20072150
Subject:
TWP/SMET/C2 - Lower Wind Speed Data Suspect
DataStreams:twpsmet60sC2.b1
Description:
The lower wind speed bearings appeared to be binding at speeds below 2 m/s as it did not 
compare well with the upper wind monitor.
Measurements:twpsmet60sC2.b1:
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 speed minimum(wind2_spd_min)

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