Data Quality Reports for Session: 104171 User: turner Completed: 02/12/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060113.1TWP/VCEIL/C3 - low receiver sensitivitytwpvceil25kC3.b1
D060426.8TWP/SMET/C3 - ORG data noisy due to degraded groundtwpsmet60sC3.b1
D060502.3TWP/SMET/C3 - Reprocess: Windspeed2 calibration errortwpsmet60sC3.b1
D060601.1TWP/MWR/C3 - Site shutdowntwpmwrC3.00, twpmwrlosC3.a1, twpmwrlosC3.b1, twpmwrtipC3.a1
D060627.1TWP/SMET/C3 - Anemometer Readings Incorrecttwpsmet60sC3.b1
D060818.3TWP/SMET/C3 - Reprocess: Barometric Data Changed from hPa to kPatwpsmet60sC3.b1
D061011.4TWP/SMET/C3 - Reprocess: Tipping bucket rain gauge addedtwpsmet60sC3.b1
D061114.4TWP/MWR/C3 - Sun in field of view of radiometertwpmwrlosC3.b1, twpmwrtipC3.a1
D061220.34TWP/VCEIL/C3 - standard instrument installedtwpvceil25kC3.b1


DQRID : D060113.1
Start DateStart TimeEnd DateEnd Time
12/12/2005055505/18/20062300
Subject:
TWP/VCEIL/C3 - low receiver sensitivity
DataStreams:twpvceil25kC3.b1
Description:
The ceilometer reported frequent receiver alarms. There are periods when the receiver 
sensitivity dropped to about 50%. The problem was corrected by replacing the instrument with 
a spare.
Measurements:twpvceil25kC3.b1:
  • Lowest cloud base height detected.(first_cbh)
  • Vertical visibility(vertical_visibility)
  • Aerosol volume backscattering coefficient at 355 nm(backscatter)
  • SUM of detected and normalized backscatter(sum_backscatter)
  • Second lowest cloud base height(second_cbh)
  • Third cloud base height(third_cbh)
  • Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
  • Altitude of highest signal(alt_highest_signal)
  • Millivolts at internal ADC input (0 to 2500)(background_light)


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DQRID : D060426.8
Start DateStart TimeEnd DateEnd Time
12/01/2005000008/24/20062359
Subject:
TWP/SMET/C3 - ORG data noisy due to degraded ground
DataStreams:twpsmet60sC3.b1
Description:
SMET Rain Data began to be noisy during December 2005 and the problem slowly became worse 
over time so that in February 2006 the ORG was reporting with a constant background value 
of around 0.10 mm/hr rain rate.  ORG voltage showed a near constant value above the 85mV 
threshold.  The ground for the ORG had become degraded and was lost due to corrosion.
Measurements:twpsmet60sC3.b1:
  • Precipitation mean(precip_mean)
  • Precipitation maximum(precip_max)
  • Precipitation standard deviation(precip_sd)
  • precipitation minimum(precip_min)


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DQRID : D060502.3
Start DateStart TimeEnd DateEnd Time
04/27/2006233005/02/20060201
Subject:
TWP/SMET/C3 - Reprocess: Windspeed2 calibration error
DataStreams:twpsmet60sC3.b1
Description:
The lower anemometer was replaced afer being removed in anticipation of cyclone Monica. 
The calibration coefficient was not changed during this period so the wind speeds are a 
little low (0.2%).
Measurements:twpsmet60sC3.b1:
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #2 speed minimum(wind2_spd_min)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #2 speed standard deviation(wind2_spd_sd)


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DQRID : D060601.1
Start DateStart TimeEnd DateEnd Time
04/24/2006000004/25/20062259
Subject:
TWP/MWR/C3 - Site shutdown
DataStreams:twpmwrC3.00, twpmwrlosC3.a1, twpmwrlosC3.b1, twpmwrtipC3.a1
Description:
On 4/24, the site was shutdown in preparation for a cyclone. Instruments were back up on 
4/25 at 22:59
Measurements:twpmwrlosC3.a1:
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Mean total water vapor amount along LOS path(vap)
  • 23.8 GHz Blackbody signal(bb23)
  • Mean 31.4 GHz sky brightness temperature(tbsky31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Time offset from base_time(base_time)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Mixer kinetic (physical) temperature(tkxc)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise diode mount temperature(tknd)
  • Mean total liquid water amount along LOS path(liq)
  • altitude above sea levelaltunits(alt)
  • 31.4 GHz Blackbody signal(bb31)
  • east longitude for all the input platforms.(lon)
  • Ambient temperature(tkair)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • 23.8 GHz sky signal(sky23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • north latitude for all the input platforms.(lat)
  • Time offset of tweaks from base_time(time_offset)
  • Mean 23.8 GHz sky brightness temperature(tbsky23)
  • Blackbody kinetic temperature(tkbb)
  • 31.4 GHz blackbody+noise injection signal(bbn31)
  • 31.4 GHz sky signal(sky31)

twpmwrlosC3.b1:
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • east longitude for all the input platforms.(lon)
  • 31.4 GHz blackbody+noise injection signal(bbn31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Time offset of tweaks from base_time(time_offset)
  • Mean total water vapor amount along LOS path(vap)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Noise diode mount temperature(tknd)
  • Ambient temperature(tkair)
  • Mean 31.4 GHz sky brightness temperature(tbsky31)
  • Time offset from base_time(base_time)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • altitude above sea levelaltunits(alt)
  • 23.8 GHz Blackbody signal(bb23)
  • Mean total liquid water amount along LOS path(liq)
  • 31.4 GHz Blackbody signal(bb31)
  • 31.4 GHz sky signal(sky31)
  • 23.8 GHz sky signal(sky23)
  • Mean 23.8 GHz sky brightness temperature(tbsky23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • north latitude for all the input platforms.(lat)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Blackbody kinetic temperature(tkbb)
  • Mixer kinetic (physical) temperature(tkxc)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)

twpmwrtipC3.a1:
  • Ambient temperature(tkair)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 23.8 GHz sky signal(tipsky23)
  • 31.4 GHz Blackbody signal(bb31)
  • Time offset of tweaks from base_time(time_offset)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • 31.4 GHz blackbody+noise injection signal(bbn31)
  • Time offset from base_time(base_time)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 23.8 GHz Blackbody signal(bb23)
  • Blackbody kinetic temperature(tkbb)
  • Noise diode mount temperature(tknd)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • east longitude for all the input platforms.(lon)
  • Mixer kinetic (physical) temperature(tkxc)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • 31.4 GHz sky signal(tipsky31)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • altitude above sea levelaltunits(alt)
  • north latitude for all the input platforms.(lat)
  • Actual elevation angle(actel)
  • Actual Azimuth(actaz)

twpmwrC3.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D060627.1
Start DateStart TimeEnd DateEnd Time
06/27/2006011506/27/20060344
Subject:
TWP/SMET/C3 - Anemometer Readings Incorrect
DataStreams:twpsmet60sC3.b1
Description:
The Anemometer readings were incorrect due to the tower being lowered for maintenance.
Measurements:twpsmet60sC3.b1:
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #2 speed minimum(wind2_spd_min)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #2 speed standard deviation(wind2_spd_sd)


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DQRID : D060818.3
Start DateStart TimeEnd DateEnd Time
12/02/2003000007/13/20062219
Subject:
TWP/SMET/C3 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:twpsmet60sC3.b1
Description:
Barometric pressure data was converted from hPa to kPa in order to standardize the 
measurement units among ARM sites and to conform to accepted standard units determined by the 
scientific community.
Measurements:twpsmet60sC3.b1:
  • Atmospheric pressure(atmos_pressure)


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DQRID : D061011.4
Start DateStart TimeEnd DateEnd Time
03/12/2002000009/26/20061435
Subject:
TWP/SMET/C3 - Reprocess: Tipping bucket rain gauge added
DataStreams:twpsmet60sC3.b1
Description:
A tipping bucket rain gauge was added to the SMET suite of instruments effective 20060926. 
 Two new variables (count and rain amount) were added at the end of the twpsmet60sC1.b1 
datastream.  When reprocessing of this datastream occurs these variables will be added 
with -9999 (missing) as the value for dates prior to gauge installation.
Measurements:twpsmet60sC3.b1:
  • Time offset from base_time(base_time)


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DQRID : D061114.4
Start DateStart TimeEnd DateEnd Time
10/20/2006000011/09/20060400
Subject:
TWP/MWR/C3 - Sun in field of view of radiometer
DataStreams:twpmwrlosC3.b1, twpmwrtipC3.a1
Description:
Each day from 9/20 and 10/9 around local noon, there is an increase in the brightness 
temperature due to the sun being in the field of view of the radiometer.
Measurements:twpmwrlosC3.b1:
  • Mean total water vapor amount along LOS path(vap)
  • Mean total liquid water amount along LOS path(liq)
  • Mean 31.4 GHz sky brightness temperature(tbsky31)
  • Mean 23.8 GHz sky brightness temperature(tbsky23)

twpmwrtipC3.a1:
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • 23.8 GHz sky signal(tipsky23)
  • 31.4 GHz sky signal(tipsky31)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)


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DQRID : D061220.34
Start DateStart TimeEnd DateEnd Time
05/18/2006230012/20/20060400
Subject:
TWP/VCEIL/C3 - standard instrument installed
DataStreams:twpvceil25kC3.b1
Description:
A spare ceilometer without the tropics window option was installed. The manufacturer 
recommends the tropics window be used at +/- 25 deg lattitude to prevent direct solar 
radiation into the laser optics when the instrument pointed at zenith. No significant signal 
degradation is apparent during the autumnal equinox but, as a precaution, the unit was 
replaced with the original with a tropics window.
Measurements:twpvceil25kC3.b1:
  • Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
  • Vertical visibility(vertical_visibility)
  • Aerosol volume backscattering coefficient at 355 nm(backscatter)
  • SUM of detected and normalized backscatter(sum_backscatter)
  • Laser temperature(laser_temperature)
  • Millivolts at internal ADC input (0 to 2500)(background_light)


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