DQRs for Session: 111241 User:gaustadCompleted: 03-23-2008

Data Quality Reports for Session: 111241 User: gaustad Completed: 03/23/2008

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D030114.1	SGP/SONDE/C1 - Bad RH Data	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030122.1	SGP/SONDE/C1 - Broken temperature sensor SGP/CF sounding	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030206.5	SGP/SONDE/C1 - Bad temperature/RH	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030330.1	SGP/Sonde/C1 - Bad temperature, RH	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030409.1	SGP/Sonde/C1 - Bad RH in sounding	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030411.1	SGP/Sonde/C1 - Sondes launched an hour early	sgpsondewnpnC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030411.2	SGP/Sonde/C1 - Incorrect surface temperature on CF sounding	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030411.3	SGP/Sonde/C1 - Failed Sonde Launches due to Antenna problems	sgplssondeC1.c1, sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030419.2	SGP/SONDE/C1 - Broken Temperature Sensor	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030427.1	SGP/SONDE/C1 - Broken temperature sensor	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030507.3	SGP/SONDE/C1 - Broken temperature sensors	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030614.1	SGP/SONDE/C1 - Broken temperature sensor	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030707.7	SGP/SONDE/C1 - Incorrect surface RH value.	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030722.1	SGP/SONDE/C1 - Broken temperature sensor	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030807.1	SGP/SONDE/C1 - A few bad temperature values at the beginning of the sounding	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D031112.1	SGP/SONDE/C1 - Broken temperature sensor	sgpsondewnpnC1.b1
D060928.3	SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry	sgpsondewnpnC1.b1

DQRID : D030114.1

Start Date	Start Time	End Date	End Time
01/11/2003	0536	01/11/2003	0551

Subject:	SGP/SONDE/C1 - Bad RH Data
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The RH values during the first 15 minutes of this sounding oscillate between reasonable values and near-zero values. The oscillation is irregular and seems to be related to failure of the RH sensor heating process. I have informed Vaisala of the problem and provided raw data files to them for analysis.
Measurements:	sgpsondewnpnC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030122.1

Start Date	Start Time	End Date	End Time
01/19/2003	1134	01/19/2003	1259

Subject:	SGP/SONDE/C1 - Broken temperature sensor SGP/CF sounding
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The radiosonde temperature sensor apparently broke during launch. This results in bad temperature, dew point, and rh data.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030206.5

Start Date	Start Time	End Date	End Time
02/02/2003	1732	02/02/2003	1832

Subject:	SGP/SONDE/C1 - Bad temperature/RH
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensor broke shortly after launch. All temperature and RH-related data are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030330.1

Start Date	Start Time	End Date	End Time
03/18/2003	1132	03/18/2003	1322
03/20/2003	1131	03/20/2003	1140
03/20/2003	1731	03/20/2003	1904

Subject:	SGP/Sonde/C1 - Bad temperature, RH
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	These three soundings all show the effects of a temperature sensor broken at launch. The temperature, RH, dew-point values all are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030409.1

Start Date	Start Time	End Date	End Time
04/06/2003	1144	04/06/2003	1203

Subject:	SGP/Sonde/C1 - Bad RH in sounding
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The RH sensor heating circuit was out of synch from about 400 sec after launch until the circuit was turned off whent he sounding temperature reached approximately 233 degK (-40 degC) about 1500 sec after launch. During this time period the reported RH oscillates between reasonable values and near-zero values.
Measurements:	sgpsondewnpnC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030411.1

Start Date	Start Time	End Date	End Time
04/06/2003	2200	04/07/2003	0700

Subject:	SGP/Sonde/C1 - Sondes launched an hour early
DataStreams:	sgpsondewnpnC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It looks like someone forgot to set his/her clock ahead. The sounding that should have been done at 23:30 UTC on 4/6 was done at 22:38 and the following sounding, which should have been done at 0530 on 4/7 was done at 04:31. The subsequent soundings all are done at the correct times.
Measurements:	sgpsondewnpnC1.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgpsondewnpnC1.a1: Mean Wind Speed(wspd) Dummy altitude for Zeb(alt) V-component(v_wind) base time(base_time) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) Wind Direction(deg) Wind Status(wstat) U-component(u_wind) Surface dew point temperature(dp) Dry bulb temperature(tdry) Time offset of tweaks from base_time(time_offset) lat(lat) lon(lon) Retrieved pressure profile(pres) sgpsondewnpnC1.b1: Mean Wind Speed(wspd) U-component(u_wind) lat(lat) Ascent Rate(asc) lon(lon) Time offset of tweaks from base_time(time_offset) V-component(v_wind) Dummy altitude for Zeb(alt) Surface dew point temperature(dp) base time(base_time) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres) Wind Direction(deg) Wind Status(wstat) Dry bulb temperature(tdry)

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DQRID : D030411.2

Start Date	Start Time	End Date	End Time
04/06/2003	2238	04/06/2003	2238

Subject:	SGP/Sonde/C1 - Incorrect surface temperature on CF sounding
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	It appears that the operator entered an incorrect value for surface temperature. Rather than 43.2 degC in the file, the value is most likely 19. degC (thwaps reading 19.4, first sonde reading aloft 18.6).
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) sgpsondewnpnC1.b1: Dry bulb temperature(tdry)

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DQRID : D030411.3

Start Date	Start Time	End Date	End Time
04/01/2003	1730	04/01/2003	1930
04/02/2003	0530	04/02/2003	0730
04/02/2003	1130	04/02/2003	1330

Subject:	SGP/Sonde/C1 - Failed Sonde Launches due to Antenna problems
DataStreams:	sgplssondeC1.c1, sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	These sonde launches where unsuccessful due to problems with the antenna configuration resulting in signal loss before the launch.
Measurements:	sgpsondewnpnC1.a1: Mean Wind Speed(wspd) V-component(v_wind) Dummy altitude for Zeb(alt) base time(base_time) Relative humidity inside the instrument enclosure(rh) Ascent Rate(asc) U-component(u_wind) Wind Status(wstat) Wind Direction(deg) Surface dew point temperature(dp) Dry bulb temperature(tdry) Time offset of tweaks from base_time(time_offset) lat(lat) lon(lon) Retrieved pressure profile(pres) sgpsondewnpnC1.b1: U-component(u_wind) Mean Wind Speed(wspd) lat(lat) Ascent Rate(asc) lon(lon) Time offset of tweaks from base_time(time_offset) V-component(v_wind) Dummy altitude for Zeb(alt) Surface dew point temperature(dp) base time(base_time) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres) Wind Direction(deg) Wind Status(wstat) Dry bulb temperature(tdry) sgpsondeC1.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) sgplssondeC1.c1: lon(lon) Dummy altitude for Zeb(alt) base time(base_time) Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh) Dry bulb temperature(tdry) lat(lat) Time offset of tweaks from base_time(time_offset)

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DQRID : D030419.2

Start Date	Start Time	End Date	End Time
04/15/2003	2332	04/16/2003	0124

Subject:	SGP/SONDE/C1 - Broken Temperature Sensor
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensor broke shortly after launch as a result all variables that are affected by temperature are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030427.1

Start Date	Start Time	End Date	End Time
04/18/2003	1130	04/18/2003	1310

Subject:	SGP/SONDE/C1 - Broken temperature sensor
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensor on this radiosonde broke after launch. All temperature-related variables (dp, tdry, rh) are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030507.3

Start Date	Start Time	End Date	End Time
05/04/2003	1130	05/04/2003	1145
05/04/2003	2330	05/05/2003	0116

Subject:	SGP/SONDE/C1 - Broken temperature sensors
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensors broke at launch on both of these soundings. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030614.1

Start Date	Start Time	End Date	End Time
06/09/2003	1730	06/09/2003	1737

Subject:	SGP/SONDE/C1 - Broken temperature sensor
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030707.7

Start Date	Start Time	End Date	End Time
06/22/2003	2331	06/22/2003	2331

Subject:	SGP/SONDE/C1 - Incorrect surface RH value.
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The surface RH value, reported as 0%RH should be 52%. This resulted from a typographical error by the operator when entering the surface data.
Measurements:	sgpsondewnpnC1.a1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030722.1

Start Date	Start Time	End Date	End Time
07/19/2003	1730	07/19/2003	1930

Subject:	SGP/SONDE/C1 - Broken temperature sensor
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D030807.1

Start Date	Start Time	End Date	End Time
08/02/2003	1725	08/02/2003	1726

Subject:	SGP/SONDE/C1 - A few bad temperature values at the beginning of the sounding
DataStreams:	sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:	I've never seen this before. The temperature reported by the radiosonde dropped over 30 degC just after launch (usually a symptom of a broken temperature sensor), but then recovered after 14 seconds of bad readings. The temperatures from 2 seconds through 14 seconds after launch are incorrect, the remainder of the sounding looks fine. I have sent the data files to Vaisala for their consideration.
Measurements:	sgpsondewnpnC1.a1: Dry bulb temperature(tdry) Surface dew point temperature(dp) sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry)

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DQRID : D031112.1

Start Date	Start Time	End Date	End Time
11/01/2003	1133	11/01/2003	1315

Subject:	SGP/SONDE/C1 - Broken temperature sensor
DataStreams:	sgpsondewnpnC1.b1
Description:	The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh)

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DQRID : D060928.3

Start Date	Start Time	End Date	End Time
09/28/2006	1728	12/31/9999	2359

Subject:	SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry
DataStreams:	sgpsondewnpnC1.b1
Description:	The output precision of the following variables was increased 20060928 alt changed from 1m to 0.1m dp changed from 0.1degC to 0.01degC pres changed from 0.1 hPa to 0.01 hPa RH changed from 1%RH to 0.01%RH tdry changed from .1degC to 0.01degC Note that the increase in precision does not necessarily imply an increase in accuracy. Users are cautioned to continue to use their best scientific judgement when using these or any other data.
Measurements:	sgpsondewnpnC1.b1: Surface dew point temperature(dp) Dry bulb temperature(tdry) Relative humidity inside the instrument enclosure(rh) Retrieved pressure profile(pres) Dummy altitude for Zeb(alt)

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