DQRs for Session: 103700 User:c_longCompleted: 01-15-2007

Data Quality Reports for Session: 103700 User: c_long Completed: 01/15/2007

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D060913.3	NSA/METTWR/C2 - PWS data missing/incorrect due to maintenance.	nsamettwr2hC2.b1
D061003.1	NSA/METTWR/C1 - All data from 10m Level Missing	nsamettwr4hC1.b1
D061012.2	NSA/METTWR/C1 - Missing CMH data	nsamettwr4hC1.b1
D061023.1	NSA/METTWR/C1 - 10m level loss of power	nsamettwr4hC1.b1
D061025.1	NSA/METTWR/C1 - 2m T/RH probe aspirator fan failed	nsamettwr4hC1.b1
D061128.1	NSA/METTWR/C2 - 2m Temp/RH sensor blocked with snow	nsamettwr2hC2.b1
D061128.2	NSA/METTWR/C1 - Wind direction sensor frozen	nsamettwr4hC1.b1

DQRID : D060913.3

Start Date	Start Time	End Date	End Time
08/21/2006	2228	08/21/2006	2329
08/22/2006	0233	08/22/2006	0301
08/23/2006	2214	08/23/2006	2219
08/24/2006	1617	08/24/2006	1628
08/25/2006	0257	08/25/2006	0309
09/01/2006	0158	09/01/2006	0331

Subject:	NSA/METTWR/C2 - PWS data missing/incorrect due to maintenance.
DataStreams:	nsamettwr2hC2.b1
Description:	Present Weather Sensor data was missing or incorrect due to maintenance activities repeated approximately daily as we were trying to correct another problem.
Measurements:	nsamettwr2hC2.b1: Chilled Mirror Temperature(CMHTemp) 1 hour Present Weather Code(PWCod1hr) Cumulative Snow Sum(CumSnow) 10 minute Average Visibility(AvgVis10m) Present Weather Sensor Alarm(PWSAlarm) Precipitation Rate(PCPRate) Instant Present Weather Code(InstPWCod) Cumulative Water Sum(CumH2O) 15 minute Present Weather Code(PWcod15mi) 1 minute Average Visibility(AvgVis1mi)

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DQRID : D061003.1

Start Date	Start Time	End Date	End Time
09/25/2006	2234	10/04/2006	2347

Subject:	NSA/METTWR/C1 - All data from 10m Level Missing
DataStreams:	nsamettwr4hC1.b1
Description:	The winch that lowers the tower booms failed. Manual testing of the motor and winch allowed the booms to be lowered briefly and then raised back into position. A heavy freezing rain/icing event added extra weight to the booms. This extra weight was suspected as the cause as to why the 10m boom became disconnected. After a new motor was installed and all booms were lowered and re-raised the 10m level came back on line.
Measurements:	nsamettwr4hC1.b1: 10m Average Calculated Dew Point(DP10M_AVG) 10m Average QLI Reference Temperature(RefT10m_AVG) Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD) 10m Average Relative Humidity(RH10M_AVG) 10m Vector Averaged Wind Speed(WS10M_U_WVT) 10m Average Calculated Vapor Pressure(VP10M_AVG) 10m Average QLI Input Voltage(Volt10M_AVG) Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT) 10m Average Temperature(T10M_AVG) Standard Deviation of 10m Relative Humidity(RH10M_STD) 10m Arithmetic Mean Wind Speed(WS10M_S_WVT) 10m Vector Averaged Wind Direction(WD10M_DU_WVT) Standard Deviation of 10m Calculated Dew Point(DP10M_STD) Standard Deviation of 10m Temperature(T10M_STD)

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DQRID : D061012.2

Start Date	Start Time	End Date	End Time
10/12/2006	0351	10/14/2006	0038

Subject:	NSA/METTWR/C1 - Missing CMH data
DataStreams:	nsamettwr4hC1.b1
Description:	CMH data are missing. Corrosion in the serial data line connections caused a loss of communication with the CMH.
Measurements:	nsamettwr4hC1.b1: Chilled Mirror Calculated Vapor Pressure(VPCMH) Chilled Mirror Calculated Relative Humidity(CMHRH) Chilled Mirror Dew Point(CMHDP) Chilled Mirror Temperature(CMHTemp) Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)

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DQRID : D061023.1

Start Date	Start Time	End Date	End Time
10/18/2006	1840	10/23/2006	2230

Subject:	NSA/METTWR/C1 - 10m level loss of power
DataStreams:	nsamettwr4hC1.b1
Description:	The 10 meter instrument level lost power so all variables from this level are missing.
Measurements:	nsamettwr4hC1.b1: 10m Average Calculated Dew Point(DP10M_AVG) 10m Average QLI Reference Temperature(RefT10m_AVG) Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD) 10m Average Relative Humidity(RH10M_AVG) 10m Vector Averaged Wind Speed(WS10M_U_WVT) 10m Average Calculated Vapor Pressure(VP10M_AVG) 10m Average QLI Input Voltage(Volt10M_AVG) Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT) 10m Average Temperature(T10M_AVG) Standard Deviation of 10m Relative Humidity(RH10M_STD) 10m Arithmetic Mean Wind Speed(WS10M_S_WVT) 10m Vector Averaged Wind Direction(WD10M_DU_WVT) Standard Deviation of 10m Calculated Dew Point(DP10M_STD) Standard Deviation of 10m Temperature(T10M_STD)

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DQRID : D061025.1

Start Date	Start Time	End Date	End Time
10/18/2006	2240	10/23/2006	2230

Subject:	NSA/METTWR/C1 - 2m T/RH probe aspirator fan failed
DataStreams:	nsamettwr4hC1.b1
Description:	The aspirator fan for the 2m level T/RH probe failed. This caused higher than normal readings for temp and RH and artificially smoothed the data.
Measurements:	nsamettwr4hC1.b1: 2m Average Calculated Vapor Pressure(VP2M_AVG) Standard Deviation of 2m Calculated Dew Point(DP2M_STD) Standard Deviation of 2m Relative Humidity(RH2M_STD) 2m Average Relative Humidity(RH2M_AVG) Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD) 2m Average Temperature(T2M_AVG) Standard Deviation of 2m Temperature(T2M_STD) 2m Average Calculated Dew Point(DP2M_AVG)

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DQRID : D061128.1

Start Date	Start Time	End Date	End Time
11/27/2006	0608	11/27/2006	2226

Subject:	NSA/METTWR/C2 - 2m Temp/RH sensor blocked with snow
DataStreams:	nsamettwr2hC2.b1
Description:	The 2m RH, Dew Point and Vapor Pressure values are incorrect due to the intake of the aspirated shield being blocked with snow and ice. The RH% values are artificially larger than the 5m and Chilled Mirror values.
Measurements:	nsamettwr2hC2.b1: 2m Average Calculated Vapor Pressure(VP2m_AVG) Standard Deviation of 2m Relative Humidity(RH2m_STD) 2m Average Relative Humidity(RH2m_AVG) Standard Deviation of 2m Calculated Dew Point(DP2m_STD) Standard Deviation of 2m Calculated Vapor Pressure(VP2m_STD) 2m Average Calculated Dew Point(DP2m_AVG)

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DQRID : D061128.2

Start Date	Start Time	End Date	End Time
11/24/2006	2336	11/27/2006	0253

Subject:	NSA/METTWR/C1 - Wind direction sensor frozen
DataStreams:	nsamettwr4hC1.b1
Description:	After a power outage the 40m wind direction sensor was frozen. Data from this sensor was not representative of the true winds.
Measurements:	nsamettwr4hC1.b1: 40m Vector Averaged Wind Direction(WD40M_DU_WVT) Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)

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