Data Quality Reports for Session: 148987 User: mssingh Completed: 03/22/2013


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D000622.3TWP/C1 - Incorrect elevation reported in Manus DatatwpsondewnpnC1.a1
D000718.13TWP/C1/Balloon Soundings Maximum AltitudetwpsondewnpnC1.a1, twpsondewnpnC1.a0
D000718.14TWP/C1/Balloon Soundings Maximum AltitudetwpsondewnpnC1.a1, twpsondewnpnC1.a0
D000718.15TWP/C1/Balloon Soundings Maximum AltitudetwpsondewnpnC1.a1, twpsondewnpnC1.a0
D000718.16TWP/C1/Balloon Soundings Maximum AltitudetwpsondewnpnC1.a1, twpsondewnpnC1.a0
D000718.18TWP/C1/Balloon Soundings Maximum AltitudetwpsondewnpnC1.a1, twpsondewnpnC1.a0
D000719.1TWP/C1 - Generator ProblemtwpsondewnpnC1.a0, twpmfrsrC1.a0, twpsondewnpnC1.a1, twpmfrsrC1.b1, twpvceil25kC1.a1,
twpvceil25kC1.b1
D020620.66TWP/C1 - Incorrect elevation reported in Manus DatatwpsondewnpnC1.a1
D021229.1TWP/SONDE/C1 - Broken Temperature SensortwpsondewnpnC1.a1, twpsondewnpnC1.b1
D021231.2TWP/Sonde/C1 - Bad RH ValuestwpsondewnpnC1.a1, twpsondewnpnC1.b1
D030427.2TWP/SONDE/C1 - Questionable RHtwpsondewnpnC1.a1, twpsondewnpnC1.b1
D030503.1TWP/SONDE/C1 - Bad RHtwpsondewnpnC1.a1, twpsondewnpnC1.b1
D030603.3TWP/SONDE/C1 - Broken temperature sensortwpsondewnpnC1.b1, twpsondewnpnC1.a1
D040228.1TWP/SONDE/C1 - Broken temperature sensortwpsondewnpnC1.b1
D040228.3TWP/SONDE/C1 - Bad RH sensorstwpsondewnpnC1.b1
D040530.1TWP/SONDE/C1 - Bad RH sensortwpsondewnpnC1.a1, twpsondewnpnC1.b1
D040606.1TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D040627.1TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D040627.2TWP/SONDE/C1 - Bad RH in short interval alofttwpsondewnpnC1.b1
D040711.1TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D041011.3TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D050105.1TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D050201.2TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D070313.3TWP/SONDE/C1 - Surface RH value incorrecttwpsondewnpnC1.b1
D090629.3TWP/SONDE/C1 - Wind data missingtwpsondewnpnC1.b1


DQRID : D000622.3
Start DateStart TimeEnd DateEnd Time
08/28/1997045506/22/20002359
Subject:
TWP/C1 - Incorrect elevation reported in Manus Data
DataStreams:twpsondewnpnC1.a1
Description:
(From Bill Clements) We have been using 6m MSL as the station
elevation of Momote (Manus).  This was based on information
posted near the station barometer in the Momote Weather Service
Office.  It turns out that the official WMO station elevation
for Momote is 4m MSL and the upper air elevation is 5m MSL.

All Manus instruments except the sonde station are at 4m MSL.
The sonde launching station is at 5m MSL.
Measurements:twpsondewnpnC1.a1:
  • alt


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DQRID : D000718.13
Start DateStart TimeEnd DateEnd Time
12/04/1997223912/04/19972240
Subject:
TWP/C1/Balloon Soundings Maximum Altitude
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.a0
Description:
Only surface data included in this data file.
Measurements:twpsondewnpnC1.a0:
  • Humidity, relative(rh)
  • lat
  • Dry Bulb Temperature(tdry)
  • Wind Direction(deg)
  • Dewpoint Temperature(dp)
  • asc
  • lon
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • base_time
  • alt
  • Mean Wind Speed(wspd)
  • time_offset
  • wstat

twpsondewnpnC1.a1:
  • Northward Wind Component(v_wind)
  • Eastward Wind Component(u_wind)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)
  • Humidity, relative(rh)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • wstat
  • Mean Wind Speed(wspd)
  • time_offset
  • alt
  • Wind Direction(deg)
  • lat
  • base_time
  • asc
  • lon


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DQRID : D000718.14
Start DateStart TimeEnd DateEnd Time
12/08/1997224412/08/19972245
Subject:
TWP/C1/Balloon Soundings Maximum Altitude
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.a0
Description:
Only surface data included in this data file.
Measurements:twpsondewnpnC1.a0:
  • Humidity, relative(rh)
  • lat
  • Dry Bulb Temperature(tdry)
  • Wind Direction(deg)
  • Dewpoint Temperature(dp)
  • asc
  • lon
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • base_time
  • alt
  • Mean Wind Speed(wspd)
  • time_offset
  • wstat

twpsondewnpnC1.a1:
  • Northward Wind Component(v_wind)
  • Eastward Wind Component(u_wind)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)
  • Humidity, relative(rh)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • wstat
  • Mean Wind Speed(wspd)
  • time_offset
  • alt
  • Wind Direction(deg)
  • lat
  • base_time
  • asc
  • lon


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DQRID : D000718.15
Start DateStart TimeEnd DateEnd Time
12/17/1997221712/17/19972218
Subject:
TWP/C1/Balloon Soundings Maximum Altitude
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.a0
Description:
Only surface data included in this data file.
Measurements:twpsondewnpnC1.a0:
  • Humidity, relative(rh)
  • lat
  • Dry Bulb Temperature(tdry)
  • Wind Direction(deg)
  • Dewpoint Temperature(dp)
  • asc
  • lon
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • base_time
  • alt
  • Mean Wind Speed(wspd)
  • time_offset
  • wstat

twpsondewnpnC1.a1:
  • Northward Wind Component(v_wind)
  • Eastward Wind Component(u_wind)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)
  • Humidity, relative(rh)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • wstat
  • Mean Wind Speed(wspd)
  • time_offset
  • alt
  • Wind Direction(deg)
  • lat
  • base_time
  • asc
  • lon


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DQRID : D000718.16
Start DateStart TimeEnd DateEnd Time
01/31/1998224101/31/19982242
Subject:
TWP/C1/Balloon Soundings Maximum Altitude
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.a0
Description:
Only surface data included in this data file.
Measurements:twpsondewnpnC1.a0:
  • Humidity, relative(rh)
  • lat
  • Dry Bulb Temperature(tdry)
  • Wind Direction(deg)
  • Dewpoint Temperature(dp)
  • asc
  • lon
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • base_time
  • alt
  • Mean Wind Speed(wspd)
  • time_offset
  • wstat

twpsondewnpnC1.a1:
  • Northward Wind Component(v_wind)
  • Eastward Wind Component(u_wind)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)
  • Humidity, relative(rh)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • wstat
  • Mean Wind Speed(wspd)
  • time_offset
  • alt
  • Wind Direction(deg)
  • lat
  • base_time
  • asc
  • lon


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DQRID : D000718.18
Start DateStart TimeEnd DateEnd Time
02/16/1998221302/16/19982214
Subject:
TWP/C1/Balloon Soundings Maximum Altitude
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.a0
Description:
This sonde only reached a height of 0.3 km.
Measurements:twpsondewnpnC1.a0:
  • Humidity, relative(rh)
  • lat
  • Dry Bulb Temperature(tdry)
  • Wind Direction(deg)
  • Dewpoint Temperature(dp)
  • asc
  • lon
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • base_time
  • alt
  • Mean Wind Speed(wspd)
  • time_offset
  • wstat

twpsondewnpnC1.a1:
  • Northward Wind Component(v_wind)
  • Eastward Wind Component(u_wind)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)
  • Humidity, relative(rh)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • wstat
  • Mean Wind Speed(wspd)
  • time_offset
  • alt
  • Wind Direction(deg)
  • lat
  • base_time
  • asc
  • lon


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DQRID : D000719.1
Start DateStart TimeEnd DateEnd Time
11/20/1998000011/27/19980000
Subject:
TWP/C1 - Generator Problem
DataStreams:twpsondewnpnC1.a0, twpmfrsrC1.a0, twpsondewnpnC1.a1, twpmfrsrC1.b1, twpvceil25kC1.a1,
twpvceil25kC1.b1
Description:
On November 18 the generator was turned off due to a fault in the oil
pressure sensor. It had been having trouble for at least a day prior
to the manual shut-down. ADaM, the MPL, and the WSI were also shut
down to prevent an unscheduled power cycle. As a result, there is a block 
of missing data from November 20-27 for all of the instruments except 
those connected to the Zeno loggers (SKYRAD, GNDRAD, SMET).
Measurements:twpsondewnpnC1.a0:
  • Wind Direction(deg)
  • asc
  • Mean Wind Speed(wspd)
  • Humidity, relative(rh)
  • Dry Bulb Temperature(tdry)
  • lon
  • base_time
  • wstat
  • lat
  • Dewpoint Temperature(dp)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • time_offset
  • alt

twpsondewnpnC1.a1:
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • wstat
  • asc
  • lon
  • Dry Bulb Temperature(tdry)
  • Humidity, relative(rh)
  • Eastward Wind Component(u_wind)
  • Mean Wind Speed(wspd)
  • base_time
  • Northward Wind Component(v_wind)
  • Dewpoint Temperature(dp)
  • time_offset
  • alt
  • Wind Direction(deg)
  • lat

twpvceil25kC1.a1:
  • laser_temperature
  • Backscatter(backscatter)
  • lon
  • measurement_parameters
  • base_time
  • alt_highest_signal
  • vertical_visibility
  • alt
  • lat
  • Second lowest cloud base height(second_cbh)
  • Lowest cloud base height detected.(first_cbh)
  • receiver_sensitivity
  • Third cloud base height(third_cbh)
  • range
  • detection_status
  • background_light
  • time_offset
  • sum_backscatter
  • status_flag
  • window_contamination
  • tilt_angle
  • laser_pulse_energy
  • filename
  • status_string

twpvceil25kC1.b1:
  • laser_pulse_energy
  • Second lowest cloud base height(second_cbh)
  • time_offset
  • receiver_sensitivity
  • vertical_visibility
  • filename
  • measurement_parameters
  • status_string
  • background_light
  • sum_backscatter
  • lon
  • status_flag
  • detection_status
  • range
  • laser_temperature
  • Third cloud base height(third_cbh)
  • Lowest cloud base height detected.(first_cbh)
  • alt
  • alt_highest_signal
  • tilt_angle
  • Backscatter(backscatter)
  • window_contamination
  • lat
  • base_time

twpmfrsrC1.b1:
  • logger_volt
  • lon
  • alt
  • diffuse_hemisp_broadband
  • base_time
  • cosine_solar_zenith_angle
  • lat
  • Direct Normal Broadband Irradiance(direct_norm_broadband)
  • time_offset
  • callang_flags
  • hemisp_narrowband
  • diffuse_hemisp_narrowband
  • total_hemisp_broadband
  • mfrsr_temp
  • Direct Normal Irradiance, NIMFR(direct_norm_narrowband)

twpmfrsrC1.a0:
  • lat
  • dif6
  • dif5
  • dif7
  • dif2
  • dif1
  • dif4
  • dif3
  • supply_voltage
  • base_time
  • detector_temp
  • alt
  • time_offset
  • tot3
  • tot4
  • lon
  • tot1
  • tot2
  • tot7
  • tot5
  • tot6
  • dirn4
  • dirn3
  • dirn2
  • dirn1
  • dirn7
  • dirn6
  • dirn5


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DQRID : D020620.66
Start DateStart TimeEnd DateEnd Time
11/03/1997000006/22/20002359
Subject:
TWP/C1 - Incorrect elevation reported in Manus Data
DataStreams:twpsondewnpnC1.a1
Description:
(From Bill Clements) We have been using 6m MSL as the station
elevation of Momote (Manus).  This was based on information
posted near the station barometer in the Momote Weather Service
Office.  It turns out that the official WMO station elevation
for Momote is 4m MSL and the upper air elevation is 5m MSL.

All Manus instruments except the sonde station are at 4m MSL.
The sonde launching station is at 5m MSL.
Measurements:twpsondewnpnC1.a1:
  • alt


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DQRID : D021229.1
Start DateStart TimeEnd DateEnd Time
09/18/2002233409/19/20020111
09/21/2002233009/22/20020059
10/01/2002234910/02/20020117
10/13/2002113910/13/20021303
10/18/2002235810/19/20020113
05/23/2003233005/24/20030135
06/14/2003233006/15/20030147
06/22/2003115906/22/20031332
06/22/2003234906/23/20030110
06/23/2003114606/23/20031323
06/25/2003234206/26/20030118
06/28/2003233006/29/20030056
06/29/2003113406/29/20031312
Subject:
TWP/SONDE/C1  - Broken Temperature Sensor
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.b1
Description:
The temperature sensor on these radiosondes broke after launch.
All the temperature related data are incorrect.
Measurements:twpsondewnpnC1.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)

twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)


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DQRID : D021231.2
Start DateStart TimeEnd DateEnd Time
12/21/2002233612/22/20020119
Subject:
TWP/Sonde/C1 - Bad RH Values
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.b1
Description:
The RH values from the surface to approximately 11.5 km oscillate between reasonable 
values and zero.  This is apparently caused by a failure in the RH sensor heating process.  
Although the oscillation stops when the heating stops (at temperatures below ~ -45degC) I 
think the values must be viewed as suspect.
Measurements:twpsondewnpnC1.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)

twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D030427.2
Start DateStart TimeEnd DateEnd Time
04/08/2003234704/09/20030003
Subject:
TWP/SONDE/C1 - Questionable RH
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 5km and 10km).  The RH oscillates rapidly between low (~5 %RH) and 
not so low (~50 %RH) and the oscillation seems to stop when the temperature is below ~35 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)

twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D030503.1
Start DateStart TimeEnd DateEnd Time
04/29/2003112304/29/20031205
Subject:
TWP/SONDE/C1 - Bad RH
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.b1
Description:
The RH sensor heating circuit failed on this radiosonde.  The RH-related values obtained 
between 0 and 10000 meters oscillate between near-zero and reasonable ambient values.  
Above 10000 the RH values are likely correct.
Measurements:twpsondewnpnC1.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)

twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D030603.3
Start DateStart TimeEnd DateEnd Time
05/23/2003233005/24/20030135
Subject:
TWP/SONDE/C1 - Broken temperature sensor
DataStreams:twpsondewnpnC1.b1, twpsondewnpnC1.a1
Description:
The temperature sensor on this radiosonde broke after launch.  All the temperature-related 
data are incorrect.
Measurements:twpsondewnpnC1.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)

twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)


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DQRID : D040228.1
Start DateStart TimeEnd DateEnd Time
02/07/2004234202/08/20040115
02/09/2004113302/09/20041233
04/05/2004233204/06/20040105
04/22/2004115604/22/20041317
04/24/2004113004/24/20041312
04/29/2004113704/29/20041312
04/30/2004233605/01/20040112
05/03/2004233105/04/20040105
05/05/2004113505/05/20041319
05/07/2004113205/07/20041315
05/11/2004114205/11/20041311
05/12/2004114505/12/20041206
05/18/2004113005/18/20041321
07/10/2004113007/11/20041255
07/13/2004113907/13/20041320
07/16/2004234607/17/20040107
07/22/2004235507/23/20040140
07/26/2004234107/27/20040115
08/14/2004233008/15/20040104
08/22/2004233508/23/20040105
09/05/2004234009/06/20040119
09/14/2004232809/14/20042329
09/17/2004233209/18/20040102
10/28/2004233610/29/20040057
11/28/2004235211/29/20040044
Subject:
TWP/SONDE/C1 - Broken temperature sensor
DataStreams:twpsondewnpnC1.b1
Description:
The temperature sensor on these radiosondes broke after launch
All the temperature-related data are incorrect.
Measurements:twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)
  • Dry Bulb Temperature(tdry)


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DQRID : D040228.3
Start DateStart TimeEnd DateEnd Time
02/06/2004234102/06/20040130
Subject:
TWP/SONDE/C1 - Bad RH sensors
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 12km).  The RH oscillates rapidly in a 20% range and the 
oscillation seems to stop when the temperature is below ~45 degC.  These are symptoms of 
failure in the ASIC (application specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D040530.1
Start DateStart TimeEnd DateEnd Time
05/28/2003233005/29/20030010
Subject:
TWP/SONDE/C1 - Bad RH sensor
DataStreams:twpsondewnpnC1.a1, twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between the surface and 11km).  The RH oscillates rapidly between low (~0 
%RH) and high (~80 %RH) and the oscillation seems to stop when the temperature is below 
~40 degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.a1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)

twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D040606.1
Start DateStart TimeEnd DateEnd Time
06/03/2004113206/03/20041212
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 11km).  The RH oscillates rapidly between low (~15 %RH) and 
not so low (~50 %RH) and the oscillation seems to stop when the temperature is below ~40 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D040627.1
Start DateStart TimeEnd DateEnd Time
06/04/2004001006/23/20042330
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 11km).  The RH oscillates rapidly between low (~0 %RH) and 
not so low (~80 %RH) and the oscillation seems to stop when the temperature is below ~40 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D040627.2
Start DateStart TimeEnd DateEnd Time
06/21/2004001006/21/20040011
Subject:
TWP/SONDE/C1  - Bad RH in short interval aloft
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit on this sonde failed about 31 minutes into 
the flight.  The RH values look reasonable from the surface to approximately 8.25 km at 
which point they begin to oscillate between 0 and 40%.  This behavior stops when the sonde 
reaches approximately 11.0km when the air temperature drops below -40 degC.  The 
oscillation stops at that point, though the RH remains higher than might be expected even under 
supersaturated conditions.
Measurements:twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D040711.1
Start DateStart TimeEnd DateEnd Time
06/30/2004113006/30/20041204
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 11km).  The RH oscillates rapidly between low (~2 %RH) and 
not so low (~90 %RH) and the oscillation seems to stop when the temperature is below ~40 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D041011.3
Start DateStart TimeEnd DateEnd Time
10/08/2004113110/08/20041200
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 11km).  The RH oscillates rapidly between low (~1 %RH) and 
high (~80 %RH).  According to Vaisala these are symptoms of failure in the ASIC 
(application specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D050105.1
Start DateStart TimeEnd DateEnd Time
12/30/2004233012/31/20040108
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 11km).  The RH oscillates rapidly between low (~5 %RH) and 
not so low (~70 %RH) and the oscillation seems to stop when the temperature is below ~40 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D050201.2
Start DateStart TimeEnd DateEnd Time
01/07/2005233001/08/20050102
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 12km).  The RH oscillates rapidly between low (~2 %RH) and 
not so low (~80 %RH) and the oscillation seems to stop when the temperature is below ~40 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint 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:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)


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DQRID : D090629.3
Start DateStart TimeEnd DateEnd Time
06/21/2009110006/24/20091100
Subject:
TWP/SONDE/C1 - Wind data missing
DataStreams:twpsondewnpnC1.b1
Description:
A GPS problem associated with Vaisala BBSS ground station software issues caused the 
ground stations to enter into an error state when using GPS wind finding. In some instances, 
the flight was aborted due to the error state and not data was collected.  A workaround 
was developed to allow sondes to be launched without collecting wind data.
Measurements:twpsondewnpnC1.b1:
  • wstat
  • Northward Wind Component(v_wind)
  • Eastward Wind Component(u_wind)
  • Mean Wind Speed(wspd)


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