DQRs for Session: 107550 User:troyanCompleted: 09-06-2007

Data Quality Reports for Session: 107550 User: troyan Completed: 09/06/2007

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D060308.1	TWP/SONDE/C2 - Broken temperature sensor	twpsondewnpnC2.b1
D060403.2	TWP/SONDE/C2 - Broken temperature sensor	twpsondewnpnC2.b1
D060418.1	TWP/SONDE/C2 - Bad RH in lower 8km	twpsondewnpnC2.b1
D060522.1	TWP/SMET/C1 - Upper wind speed sensor failure	twpsmet60sC1.b1
D060614.2	TWP/SMET/C2 - Temp/RH probe failure	twpsmet60sC2.b1
D060817.3	TWP/SMET/C1 - Reprocess: Barometric Data Changed from hPa to kPa	twpsmet60sC1.b1
D060818.2	TWP/SMET/C2 - Reprocess: Barometric Data Changed from hPa to kPa	twpsmet60sC2.b1
D061002.1	TWP/MWR/C2 - Missing data	twp5mwravgC2.c1, twpmwrC2.00, twpmwrlosC2.b1, twpmwrtipC2.a1
D061011.2	TWP/SMET/C1 - Reprocess: Tipping bucket rain gauge added	twpsmet60sC1.b1
D061011.3	TWP/SMET/C2 - Reprocess: Tipping bucket rain gauge added	twpsmet60sC2.b1
D061114.2	TWP/MWR/C1 - Radiometer failure	twpmwrC1.00, twpmwrlosC1.b1, twpmwrtipC1.a1
D061213.3	TWP/MWR/C2 - Reprocessed: New Calibration coefficients	twpmwrlosC2.b1, twpmwrtipC2.a1
D070105.1	TWP/MWR/C1 - Missing data	twpmwrlosC1.b1
D070308.3	TWP/SONDE/C2 - Surface Temperature Incorrect	twpsondewnpnC2.b1
D070308.4	TWP/SONDE/C2 - Surface RH value incorrect	twpsondewnpnC2.b1
D070313.2	TWP/SONDE/C2 - Surface RH value incorrect	twpsondewnpnC2.b1
D070313.3	TWP/SONDE/C1 - Surface RH value incorrect	twpsondewnpnC1.b1
D070329.2	TWP/SONDE/C2 - Surface RH Value incorrect	twpsondewnpnC2.b1
D070404.1	TWP/SONDE/C2 - Surface RH too high	twpsondewnpnC2.b1
D070412.3	TWP/MWR/C1/C2 - Sun in the field of view	twpmwrlosC1.b1, twpmwrlosC2.b1, twpmwrtipC1.a1, twpmwrtipC2.a1
D070428.1	TWP/SONDE/C2 - Broken temperature sensor at launch	twpsondewnpnC2.b1
D070501.2	TWP/SONDE/C2 - Broken temperature sensor at launch	twpsondewnpnC2.b1
D070613.1	TWP/MWR/C1 - Intermittent data	twpmwrlosC1.b1, twpmwrtipC1.a1
D070824.1		twpsondewnpnC1.b1
D070824.3		twpsondewnpnC2.b1
D070824.4		twpsondewnpnC2.b1

DQRID : D060308.1

Start Date	Start Time	End Date	End Time
01/15/2006	1144	01/15/2006	1328
01/19/2006	1318	01/19/2006	1320
01/22/2006	1149	01/22/2006	1315
02/14/2006	0055	02/14/2006	0207
02/21/2006	0232	02/21/2006	0359

Subject:	TWP/SONDE/C2 - Broken temperature sensor
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 : D060403.2

Start Date	Start Time	End Date	End Time
03/27/2006	0043	03/27/2006	0208

Subject:	TWP/SONDE/C2 - Broken temperature sensor
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 : D060418.1

Start Date	Start Time	End Date	End Time
04/10/2006	0247	04/10/2006	0314

Subject:	TWP/SONDE/C2 - Bad RH in lower 8km
DataStreams:	twpsondewnpnC2.b1
Description:	It appears that the RH sensor heating circuit failed during this sounding. The RH oscillates rapidly between low (~0 %RH) and not so low (ambient %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:	twpsondewnpnC2.b1: Relative humidity inside the instrument enclosure(rh) Surface dew point temperature(dp)

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DQRID : D060522.1

Start Date	Start Time	End Date	End Time
05/09/2006	0000	10/14/2006	0237

Subject:	TWP/SMET/C1 - Upper wind speed sensor failure
DataStreams:	twpsmet60sC1.b1
Description:	The upper wind speed sensor was binding at low wind speeds. Comparison to the lower wind sensor showed that the upper sensor flat-lines for long periods of time. The upper anemometer 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 : D060614.2

Start Date	Start Time	End Date	End Time
06/05/2006	2144	06/15/2006	0427

Subject:	TWP/SMET/C2 - Temp/RH probe failure
DataStreams:	twpsmet60sC2.b1
Description:	Temperature/RH probe failed and was replaced.
Measurements:	twpsmet60sC2.b1: Mean Relative Humidity(relh_mean) Mean Air Temperature or Hardware Error(temp_mean) Relative humidity maximum(relh_max) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Std Dev of Air Temperature(temp_sd) Temperature minimum(temp_min) Relative humidity minimum(relh_min) Vapor pressure standard deviation(vappress_sd) Temperature maximum(temp_max) Vapor pressure mean(vappress_mean)

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DQRID : D060817.3

Start Date	Start Time	End Date	End Time
10/09/1996	0000	07/13/2006	2225

Subject:	TWP/SMET/C1 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:	twpsmet60sC1.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:	twpsmet60sC1.b1: Barometric Pressure(atmos_pressure)

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DQRID : D060818.2

Start Date	Start Time	End Date	End Time
10/21/1998	0000	07/13/2006	2232

Subject:	TWP/SMET/C2 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:	twpsmet60sC2.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:	twpsmet60sC2.b1: Barometric Pressure(atmos_pressure)

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DQRID : D061002.1

Start Date	Start Time	End Date	End Time
09/14/2006	1500	11/27/2006	1900

Subject:	TWP/MWR/C2 - Missing data
DataStreams:	twp5mwravgC2.c1, twpmwrC2.00, twpmwrlosC2.b1, twpmwrtipC2.a1
Description:	The heater blower assembly was causing the fuse to blow. The instrument was taken offline until a replacement arrives.
Measurements:	twpmwrlosC2.b1: 31.4 GHz sky signal(sky31) Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) Mixer kinetic (physical) temperature(tkxc) 23.8 GHz blackbody+noise injection signal(bbn23) Blackbody kinetic temperature(tkbb) lat(lat) Water on Teflon window (1=WET, 0=DRY)(wet_window) Temperature correction coefficient at 23.8 GHz(tc23) Mean 23.8 GHz sky brightness temperature(tbsky23) 31.4 GHz blackbody(bb31) MWR column precipitable water vapor(vap) 23.8 GHz sky signal(sky23) Ambient temperature(tkair) IR Brightness Temperature(ir_temp) base time(base_time) Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23) 31.4 GHz blac2body+noise injection signal(bbn31) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) Mean 31.4 GHz sky brightness temperature(tbsky31) Averaged total liquid water along LOS path(liq) Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31) lon(lon) 23.8 GHz Blackbody signal(bb23) (tknd) Actual Azimuth(actaz) Time offset of tweaks from base_time(time_offset) Actual elevation angle(actel) Dummy altitude for Zeb(alt) Sky Infra-Red Temperature(sky_ir_temp) Temperature correction coefficient at 31.4 GHz(tc31) twpmwrC2.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) twp5mwravgC2.c1: lat(lat) Standard deviation about the mean for the total water vapor amount(vap_sdev) lon(lon) Fraction of data in averaging interval with water on Teflon window(water_flag_fraction) Averaged total liquid water along LOS path(liq) Standard deviation about the mean for the 31.4 GHz sky brightness temperature(tbsky31_sdev) IR Brightness Temperature(ir_temp) Time offset of tweaks from base_time(time_offset) Number of data points averaged for 23tbsky, 31tbsky, vap & liq(num_obs) Standard deviation about the mean for the 23.8 GHz sky brightness temperature(tbsky23_sdev) Dummy altitude for Zeb(alt) Mean 31.4 GHz sky brightness temperature(tbsky31) Number of points included in the ir_temp ensemble(num_obs_irt) base time(base_time) Standard deviation about the mean for the IR brightness temperature(ir_temp_sdev) Mean 23.8 GHz sky brightness temperature(tbsky23) MWR column precipitable water vapor(vap) Standard deviation about the mean for the total liquid water amount(liq_sdev) twpmwrtipC2.a1: 31.4 GHz sky signal(tipsky31) lat(lat) Noise injection temp at 31.4 GHz derived from this tip(tnd31I) 31.4 GHz goodness-of-fit coefficient(r31) Actual Azimuth(actaz) 23.8 GHz sky signal(tipsky23) 31.4 GHz blac2body+noise injection signal(bbn31) 31.4 GHz blackbody(bb31) Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23) Ambient temperature(tkair) Dummy altitude for Zeb(alt) (tknd) base time(base_time) Blackbody kinetic temperature(tkbb) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) Water on Teflon window (1=WET, 0=DRY)(wet_window) 23.8 GHz goodness-of-fit coefficient(r23) Time offset of tweaks from base_time(time_offset) Temperature correction coefficient at 23.8 GHz(tc23) Actual elevation angle(actel) Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31) 23.8 GHz Blackbody signal(bb23) Noise injection temp at 23.8 GHz derived from this tip(tnd23I) lon(lon) 23.8 GHz blackbody+noise injection signal(bbn23) Temperature correction coefficient at 31.4 GHz(tc31) Mixer kinetic (physical) temperature(tkxc)

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DQRID : D061011.2

Start Date	Start Time	End Date	End Time
10/09/1996	0000	10/17/2006	0000

Subject:	TWP/SMET/C1 - Reprocess: Tipping bucket rain gauge added
DataStreams:	twpsmet60sC1.b1
Description:	A tipping bucket rain gauge was added to the TWP.C1 SMET suite of instruments on 20061017. Effective 20060926, two new variables (count and rain amount) were added to the end of the twpsmet60sC1.b1 datastream. Between 9/26 and 10/17, the data for these two variables are filled with zeros. Users should not use the data during this period as the zeros are not representative of the rain fall at the site. When reprocessing of this datastream occurs these variables will be added for the 19961009-20060926 and data from 19961009-20061017 will be filled with -9999 (missing).
Measurements:	twpsmet60sC1.b1: base time(base_time)

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DQRID : D061011.3

Start Date	Start Time	End Date	End Time
10/21/1998	0000	11/29/2006	2014

Subject:	TWP/SMET/C2 - Reprocess: Tipping bucket rain gauge added
DataStreams:	twpsmet60sC2.b1
Description:	A tipping bucket rain gauge was added to the TWP.C2 SMET suite of instruments on 20061129. Effective 20060926, two new variables (count and rain amount) were added to the end of the twpsmet60sC2.b1 datastream. Between 9/26 and 11/29, the data for these two variables are filled with zeros. Users should not use the data during this period as the zeros are not representative of the rain fall at the site. When reprocessing of this datastream occurs these variables will be added for the 19981021-20060926 and data from 19981021-20061129 will be filled with -9999 (missing).
Measurements:	twpsmet60sC2.b1: base time(base_time)

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DQRID : D061114.2

Start Date	Start Time	End Date	End Time
10/09/2006	1000	01/30/2007	0457

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: Raw data stream - documentation not supported(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) Mean 23.8 GHz sky brightness temperature(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) Mean 31.4 GHz sky brightness temperature(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 : D061213.3

Start Date	Start Time	End Date	End Time
11/27/2006	1900	11/30/2006	0700

Subject:	TWP/MWR/C2 - Reprocessed: New Calibration coefficients
DataStreams:	twpmwrlosC2.b1, twpmwrtipC2.a1
Description:	On 11/27 a spare radiometer was installed to replace a faulty radiometer. Once the radiometer started to collect data it used the default calibration coefficients until it collected enough tip data to determine its own coefficients. The data were reprocessed to apply corrected calibrations and the reprocessed data were archived 20061222.
Measurements:	twpmwrlosC2.b1: Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31) Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23) Temperature correction coefficient at 31.4 GHz(tc31) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) Temperature correction coefficient at 23.8 GHz(tc23) Mean 23.8 GHz sky brightness temperature(tbsky23) MWR column precipitable water vapor(vap) Mean 31.4 GHz sky brightness temperature(tbsky31) Averaged total liquid water along LOS path(liq) twpmwrtipC2.a1: Temperature correction coefficient at 23.8 GHz(tc23) Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31) Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23) Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31) Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23) Temperature correction coefficient at 31.4 GHz(tc31)

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DQRID : D070105.1

Start Date	Start Time	End Date	End Time
12/09/1996	2338	12/11/1996	0003
02/28/1997	0118	06/27/1997	2048
11/06/1997	1959	11/12/1997	1800
01/05/1998	0204	01/08/1998	2048
04/21/1998	0017	04/29/1998	1803
09/13/1998	0759	09/20/1998	0900
11/20/1998	2226	11/27/1998	1026
02/27/1999	0600	03/02/1999	0159
03/06/1999	0800	03/09/1999	1807
09/03/1999	0300	09/10/1999	0400
10/01/1999	0900	10/18/1999	0000
10/20/1999	0500	10/22/1999	0600
01/14/2000	0800	01/16/2000	0342
01/14/2006	1258	01/16/2006	0638

Subject:	TWP/MWR/C1 - Missing data
DataStreams:	twpmwrlosC1.b1
Description:	Data are missing and unrecoverable.
Measurements:	twpmwrlosC1.b1: (tknd) 31.4 GHz blackbody(bb31) Mixer kinetic (physical) temperature(tkxc) 31.4 GHz sky signal(sky31) base time(base_time) Mean 31.4 GHz sky brightness temperature(tbsky31) Dummy altitude for Zeb(alt) Actual elevation angle(actel) Temperature correction coefficient at 23.8 GHz(tc23) Temperature correction coefficient at 31.4 GHz(tc31) IR Brightness Temperature(ir_temp) 31.4 GHz blac2body+noise injection signal(bbn31) 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) Mean 23.8 GHz sky brightness temperature(tbsky23) 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) Actual Azimuth(actaz) 23.8 GHz Blackbody signal(bb23) 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) Blackbody kinetic temperature(tkbb) lat(lat)

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DQRID : D070308.3

Start Date	Start Time	End Date	End Time
01/02/2007	1128	01/02/2007	1129

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 Date	Start Time	End Date	End Time
01/23/2007	1130	01/23/2007	1131

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 Date	Start Time	End Date	End Time
03/08/2007	2350	03/08/2007	2353

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 Date	Start Time	End Date	End Time
03/08/2007	0000	03/08/2007	0001

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 Date	Start Time	End Date	End Time
03/28/2007	2319	03/28/2007	2320

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 Date	Start Time	End Date	End Time
04/03/2007	2330	04/03/2007	2331

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 : D070412.3

Start Date	Start Time	End Date	End Time
03/07/2007	0000	04/02/2007	2359

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) Mean 23.8 GHz sky brightness temperature(tbsky23) MWR column precipitable water vapor(vap) 23.8 GHz sky signal(sky23) Mean 31.4 GHz sky brightness temperature(tbsky31) Averaged total liquid water along LOS path(liq) twpmwrlosC1.b1: MWR column precipitable water vapor(vap) 31.4 GHz sky signal(sky31) Mean 23.8 GHz sky brightness temperature(tbsky23) Mean 31.4 GHz sky brightness temperature(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 Date	Start Time	End Date	End Time
04/27/2007	1140	04/27/2007	1420

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 Date	Start Time	End Date	End Time
04/30/2007	2359	05/01/2007	0200

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 : D070613.1

Start Date	Start Time	End Date	End Time
06/12/2007	0700	06/13/2007	2000
06/16/2007	2100	06/17/2007	2100

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) Mean 23.8 GHz sky brightness temperature(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) Mean 31.4 GHz sky brightness temperature(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 : D070824.1

Start Date	Start Time	End Date	End Time
08/23/2007	1208	08/23/2007	1209

Subject:
DataStreams:	twpsondewnpnC1.b1
Description:
Measurements:

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DQRID : D070824.3

Start Date	Start Time	End Date	End Time
08/23/2007	0128	08/23/2007	0129

Subject:
DataStreams:	twpsondewnpnC2.b1
Description:
Measurements:

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DQRID : D070824.4

Start Date	Start Time	End Date	End Time
08/18/2007	2258	08/24/2007	1900

Subject:
DataStreams:	twpsondewnpnC2.b1
Description:
Measurements:

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END OF DATA