Data Quality Reports for Session: 123324 User: dmfoper Completed: 10/02/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D061114.2TWP/MWR/C1 - Radiometer failuretwpmwrC1.00, twpmwrlosC1.b1, twpmwrtipC1.a1
D070412.3TWP/MWR/C1/C2 - Sun in the field of viewtwpmwrlosC1.b1, twpmwrlosC2.b1, twpmwrtipC1.a1, twpmwrtipC2.a1
D070613.1TWP/MWR/C1 - Intermittent datatwpmwrlosC1.b1, twpmwrtipC1.a1
D071208.1TWP/MWR/C1 - Incorrect ambient temperature readingstwpmwrlosC1.b1, twpmwrtipC1.a1
D081013.2TWP/MWR/C1 - Short periods of wrong ambient temperaturetwpmwrlosC1.b1, twpmwrtipC1.a1
D090114.4TWP/MWR/C1 - Ambient temperature data missingtwpmwrlosC1.b1, twpmwrtipC1.a1


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 : D070412.3
Start DateStart TimeEnd DateEnd Time
03/07/2007000004/02/20072359
03/01/2008000004/02/20082359
09/10/2008000010/12/20080000
03/01/2009000004/02/20092359
Subject:
TWP/MWR/C1/C2 - Sun in the field of view
DataStreams:twpmwrlosC1.b1, twpmwrlosC2.b1, twpmwrtipC1.a1, twpmwrtipC2.a1
Description:
Every day between around noon local time (usually between 1 and 2 AM UTC 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 : 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 : D081013.2
Start DateStart TimeEnd DateEnd Time
09/01/2008000009/30/20082359
Subject:
TWP/MWR/C1 - Short periods of wrong ambient temperature
DataStreams:twpmwrlosC1.b1, twpmwrtipC1.a1
Description:
During this month there are a few intermittent instances of bad ambient temperature 
readings. I will summarize here these short time ranges:
20080909 between 02:00 and 03:00 UTC
20080909 between 09:00 and 14:00 UTC

Additionally the ambient temperature has short but frequent data gaps.  The data gaps are 
very short (less than one hour). Users could interpolate missing data or use alternative 
sensors such as the surface meteorological data available for the site.
Measurements:twpmwrlosC1.b1:
  • Ambient temperature(tkair)
twpmwrtipC1.a1:
  • Ambient temperature(tkair)

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DQRID : D090114.4
Start DateStart TimeEnd DateEnd Time
12/03/2008190002/06/20090530
Subject:
TWP/MWR/C1 - Ambient temperature data missing
DataStreams:twpmwrlosC1.b1, twpmwrtipC1.a1
Description:
The ambient temperature readings (tkair) suddenly failed. The sensor was replaced on Feb 
6.
Measurements:twpmwrlosC1.b1:
  • Ambient temperature(tkair)
twpmwrtipC1.a1:
  • Ambient temperature(tkair)

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END OF DATA