DQRs for Session: 114493 User:gregsCompleted: 10-01-2008

Data Quality Reports for Session: 114493 User: gregs Completed: 10/01/2008

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D020313.1	SGP/THWAPS/C1 - THWAPS C1 miscalibrated	sgpthwapsC1.a1, sgpthwapsC1.b1
D030917.21	SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems	sgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1, sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1, sgpthwapsC1.b1
D041123.1	SGP/THWAPS/C1 - RH Sensor Calibration	sgpthwapsC1.b1
D050812.12	SGP/THWAPS/C1 - Minor bias in saturation vapor pressure	sgpthwapsC1.b1
D080116.24	SGP/THWAPS/C1 - RH Data Incorrect	sgpthwapsC1.b1

DQRID : D020313.1

Start Date	Start Time	End Date	End Time
03/09/2002	0340	04/23/2002	1418

Subject:	SGP/THWAPS/C1 - THWAPS C1 miscalibrated
DataStreams:	sgpthwapsC1.a1, sgpthwapsC1.b1
Description:	Power outages apparently led to the THWAPS HMP233 temperature and RH sensor being replaced at C1. The power went out at 0340 on 3/9 was restored at 0635 and went out again at 2025. The new HMP233 appears to be incorrectly calibrated and all temperature data since its installation are wrong. If I am correct about the nature of the calibration problem, the true average temperature can be recovered from that recorded by a linear conversion, but I don't think its worth the trouble.
Measurements:	sgpthwapsC1.a1: Standard Deviation of Air Temperature(sd_temp) Standard Deviation of Relative Humidity(sd_rh) Vapor Pressure (kiloPascals)(vap_pres) Beam 0 Temperature(temp) Relative humidity inside the instrument enclosure(rh) sgpthwapsC1.b1: Beam 0 Temperature(temp) Relative humidity inside the instrument enclosure(rh) Standard Deviation of Air Temperature(sd_temp) Standard Deviation of Relative Humidity(sd_rh) Vapor Pressure (kiloPascals)(vap_pres)

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DQRID : D030917.21

Start Date	Start Time	End Date	End Time
03/09/2002	2055	03/11/2002	2005
03/13/2002	1755	03/14/2002	1505

Subject:	SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems
DataStreams:	sgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1, sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1, sgpthwapsC1.b1
Description:	Data are missing due to power failures caused by an ice storm and resulting system/instrument clock problems.
Measurements:	sgpthwapsC1.a1: Standard Deviation of Relative Humidity(sd_rh) Unit Vector Wind Direction(wdir) lat(lat) Standard Deviation of Vapor Pressure(sd_vap_pres) Relative humidity inside the instrument enclosure(rh) Time offset of tweaks from base_time(time_offset) Mean Wind Speed(wspd) Vapor Pressure (kiloPascals)(vap_pres) Beam 0 Temperature(temp) Standard Deviation of Air Temperature(sd_temp) base time(base_time) Standard Deviation of Wind Direction(sd_wdir) lon(lon) Standard Deviation of Pressure(sd_pres) Retrieved pressure profile(pres) Batter Voltage(vbat) Dummy altitude for Zeb(alt) sgpthwapsB1.b1: Retrieved pressure profile(pres) lat(lat) Standard Deviation of Relative Humidity(sd_rh) Standard Deviation of Air Temperature(sd_temp) Batter Voltage(vbat) Unit Vector Wind Direction(wdir) Beam 0 Temperature(temp) Vapor Pressure (kiloPascals)(vap_pres) Time offset of tweaks from base_time(time_offset) Standard Deviation of Pressure(sd_pres) Relative humidity inside the instrument enclosure(rh) Mean Wind Speed(wspd) Standard Deviation of Wind Direction(sd_wdir) lon(lon) base time(base_time) Dummy altitude for Zeb(alt) Standard Deviation of Vapor Pressure(sd_vap_pres) sgpthwapsB5.00: null(Raw data stream - documentation not supported) sgpthwapsB6.00: null(Raw data stream - documentation not supported) sgpthwapsB6.a1: lon(lon) Batter Voltage(vbat) Standard Deviation of Relative Humidity(sd_rh) Standard Deviation of Wind Direction(sd_wdir) Mean Wind Speed(wspd) Vapor Pressure (kiloPascals)(vap_pres) Relative humidity inside the instrument enclosure(rh) Time offset of tweaks from base_time(time_offset) Standard Deviation of Vapor Pressure(sd_vap_pres) lat(lat) Retrieved pressure profile(pres) Unit Vector Wind Direction(wdir) base time(base_time) Dummy altitude for Zeb(alt) Beam 0 Temperature(temp) Standard Deviation of Pressure(sd_pres) Standard Deviation of Air Temperature(sd_temp) sgpthwapsB5.b1: Relative humidity inside the instrument enclosure(rh) Standard Deviation of Air Temperature(sd_temp) Batter Voltage(vbat) lon(lon) Mean Wind Speed(wspd) Time offset of tweaks from base_time(time_offset) base time(base_time) Vapor Pressure (kiloPascals)(vap_pres) Retrieved pressure profile(pres) lat(lat) Standard Deviation of Vapor Pressure(sd_vap_pres) Standard Deviation of Wind Direction(sd_wdir) Standard Deviation of Pressure(sd_pres) Unit Vector Wind Direction(wdir) Standard Deviation of Relative Humidity(sd_rh) Beam 0 Temperature(temp) Dummy altitude for Zeb(alt) sgpthwapsC1.00: null(Raw data stream - documentation not supported) sgpthwapsB1.a1: Standard Deviation of Vapor Pressure(sd_vap_pres) Relative humidity inside the instrument enclosure(rh) Standard Deviation of Wind Direction(sd_wdir) Batter Voltage(vbat) lon(lon) Time offset of tweaks from base_time(time_offset) lat(lat) Beam 0 Temperature(temp) Mean Wind Speed(wspd) Standard Deviation of Pressure(sd_pres) Standard Deviation of Relative Humidity(sd_rh) base time(base_time) Vapor Pressure (kiloPascals)(vap_pres) Standard Deviation of Air Temperature(sd_temp) Retrieved pressure profile(pres) Dummy altitude for Zeb(alt) Unit Vector Wind Direction(wdir) sgpthwapsC1.b1: lon(lon) Retrieved pressure profile(pres) Batter Voltage(vbat) Beam 0 Temperature(temp) Time offset of tweaks from base_time(time_offset) lat(lat) Dummy altitude for Zeb(alt) Standard Deviation of Vapor Pressure(sd_vap_pres) Standard Deviation of Air Temperature(sd_temp) Standard Deviation of Wind Direction(sd_wdir) Unit Vector Wind Direction(wdir) base time(base_time) Relative humidity inside the instrument enclosure(rh) Standard Deviation of Relative Humidity(sd_rh) Vapor Pressure (kiloPascals)(vap_pres) Standard Deviation of Pressure(sd_pres) Mean Wind Speed(wspd) sgpthwapsB1.00: null(Raw data stream - documentation not supported) sgpthwapsB6.b1: Standard Deviation of Vapor Pressure(sd_vap_pres) Batter Voltage(vbat) lat(lat) Standard Deviation of Pressure(sd_pres) Standard Deviation of Air Temperature(sd_temp) Time offset of tweaks from base_time(time_offset) Standard Deviation of Wind Direction(sd_wdir) Relative humidity inside the instrument enclosure(rh) Beam 0 Temperature(temp) Vapor Pressure (kiloPascals)(vap_pres) Unit Vector Wind Direction(wdir) Retrieved pressure profile(pres) Dummy altitude for Zeb(alt) base time(base_time) Mean Wind Speed(wspd) Standard Deviation of Relative Humidity(sd_rh) lon(lon) sgpthwapsB5.a1: Unit Vector Wind Direction(wdir) Standard Deviation of Vapor Pressure(sd_vap_pres) base time(base_time) Standard Deviation of Relative Humidity(sd_rh) Batter Voltage(vbat) Relative humidity inside the instrument enclosure(rh) lat(lat) Dummy altitude for Zeb(alt) Standard Deviation of Air Temperature(sd_temp) Standard Deviation of Pressure(sd_pres) lon(lon) Time offset of tweaks from base_time(time_offset) Standard Deviation of Wind Direction(sd_wdir) Vapor Pressure (kiloPascals)(vap_pres) Mean Wind Speed(wspd) Retrieved pressure profile(pres) Beam 0 Temperature(temp)

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DQRID : D041123.1

Start Date	Start Time	End Date	End Time
11/16/2004	2135	11/29/2004	1930

Subject:	SGP/THWAPS/C1 - RH Sensor Calibration
DataStreams:	sgpthwapsC1.b1
Description:	The analog output for the T/RH probe was incorrectly calibrated. This caused excessively high readings of RH.
Measurements:	sgpthwapsC1.b1: Relative humidity inside the instrument enclosure(rh) Standard Deviation of Vapor Pressure(sd_vap_pres) Standard Deviation of Relative Humidity(sd_rh) Vapor Pressure (kiloPascals)(vap_pres)

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DQRID : D050812.12

Start Date	Start Time	End Date	End Time
09/21/1999	0000	08/10/2005	1445

Subject:	SGP/THWAPS/C1 - Minor bias in saturation vapor pressure
DataStreams:	sgpthwapsC1.b1
Description:	The saturation vapor correction when temps are below 0C contained an error in the multiplier. The incorrect multiplier only equates to an error of 0.01 kPa which is less than the stated uncertainty of the measurement (+/- 0.035 kPa).
Measurements:	sgpthwapsC1.b1: Vapor Pressure (kiloPascals)(vap_pres)

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DQRID : D080116.24

Start Date	Start Time	End Date	End Time
12/22/2007	1750	12/22/2007	2130

Subject:	SGP/THWAPS/C1 - RH Data Incorrect
DataStreams:	sgpthwapsC1.b1
Description:	The RH data was incorrect during the times listed. Reason unknown. The sensor recovered on its own.
Measurements:	sgpthwapsC1.b1: Relative humidity inside the instrument enclosure(rh) Standard Deviation of Vapor Pressure(sd_vap_pres) Standard Deviation of Relative Humidity(sd_rh) Vapor Pressure (kiloPascals)(vap_pres)

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