DQRs for Session: 109053 User:gaustadCompleted: 11-26-2007

Data Quality Reports for Session: 109053 User: gaustad Completed: 11/26/2007

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D060223.2	NSA/METTWR/C2 - Wind speed values artificially low	nsamettwr2hC2.b1
D060223.3	NSA/METTWR/C2 - CMH Data incorrect	nsamettwr2hC2.b1
D060223.4	NSA/METTWR/C2 - PWS data incorrect	nsamettwr2hC2.b1
D060406.2	NSA/METTWR/C2 - CMH Intake Fan Failure	nsamettwr2hC2.b1
D060426.2	NSA/METTWR/C2 - CMH Data Suspect	nsamettwr2hC2.b1
D060426.4	NSA/METTWR/C2 - CMH Data Suspect	nsamettwr2hC2.b1
D060818.1	NSA/METTWR/C2 - Reprocess: Barometric Data Changed from hPa to kPa	nsamettwr2hC2.b1
D060913.2	NSA/METTWR/C2 - CMH data missing and/or incorrect during maintenance.	nsamettwr2hC2.b1
D060913.3	NSA/METTWR/C2 - PWS data missing/incorrect due to maintenance.	nsamettwr2hC2.b1
D060913.4	NSA/METTWR/C2 - Met data incorrect due to tower being lowered for maintenance.	nsamettwr2hC2.b1
D061128.1	NSA/METTWR/C2 - 2m Temp/RH sensor blocked with snow	nsamettwr2hC2.b1

DQRID : D060223.2

Start Date	Start Time	End Date	End Time
02/19/2006	1900	02/20/2006	1627

Subject:	NSA/METTWR/C2 - Wind speed values artificially low
DataStreams:	nsamettwr2hC2.b1
Description:	Wind speed values were artificially low due to snow/ice accumulation on the anemometer cups during blizzard conditions. The heaters on the cups were not able to keep up with conditions.
Measurements:	nsamettwr2hC2.b1: Vector Averaged Wind Speed(WinSpeed_U_WVT) Arithmetic Mean Wind Speed(WinSpeed_S_WVT)

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DQRID : D060223.3

Start Date	Start Time	End Date	End Time
02/19/2006	1405	02/20/2006	1107
02/21/2006	0619	02/21/2006	2255

Subject:	NSA/METTWR/C2 - CMH Data incorrect
DataStreams:	nsamettwr2hC2.b1
Description:	CMH data was incorrect due to blockage of intake by heavy, wet snow during blizzard conditions.
Measurements:	nsamettwr2hC2.b1: Chilled Mirror Temperature(CMHTemp) Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH) Chilled Mirror Calculated Vapor Pressure(VPCMH) Chilled Mirror Calculated Relative Humidity(CMHRH) Chilled Mirror Dew Point(CMHDP)

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DQRID : D060223.4

Start Date	Start Time	End Date	End Time
02/21/2006	1113	02/21/2006	2359

Subject:	NSA/METTWR/C2 - PWS data incorrect
DataStreams:	nsamettwr2hC2.b1
Description:	The Present Weather Sensor measurement optics were blocked by heavy, wet snow during blizzard conditions.
Measurements:	nsamettwr2hC2.b1: 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 : D060406.2

Start Date	Start Time	End Date	End Time
04/04/2006	1914	04/06/2006	2025

Subject:	NSA/METTWR/C2 - CMH Intake Fan Failure
DataStreams:	nsamettwr2hC2.b1
Description:	Intake fan failing causing poor readings from the CMH.
Measurements:	nsamettwr2hC2.b1: Chilled Mirror Temperature(CMHTemp) Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH) Chilled Mirror Calculated Vapor Pressure(VPCMH) Chilled Mirror Calculated Relative Humidity(CMHRH) Chilled Mirror Dew Point(CMHDP)

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DQRID : D060426.2

Start Date	Start Time	End Date	End Time
04/06/2006	2212	04/11/2006	1812

Subject:	NSA/METTWR/C2 - CMH Data Suspect
DataStreams:	nsamettwr2hC2.b1
Description:	CMH data was suspect due to incorrect intake fan installed. Proper spares were not on hand.
Measurements:	nsamettwr2hC2.b1: Chilled Mirror Temperature(CMHTemp) Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH) Chilled Mirror Calculated Vapor Pressure(VPCMH) Chilled Mirror Calculated Relative Humidity(CMHRH) Chilled Mirror Dew Point(CMHDP)

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DQRID : D060426.4

Start Date	Start Time	End Date	End Time
04/20/2006	1535	04/20/2006	2110

Subject:	NSA/METTWR/C2 - CMH Data Suspect
DataStreams:	nsamettwr2hC2.b1
Description:	CMH data was suspect due to blockage of intake by snow.
Measurements:	nsamettwr2hC2.b1: Chilled Mirror Temperature(CMHTemp) Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH) Chilled Mirror Calculated Vapor Pressure(VPCMH) Chilled Mirror Calculated Relative Humidity(CMHRH) Chilled Mirror Dew Point(CMHDP)

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DQRID : D060818.1

Start Date	Start Time	End Date	End Time
11/06/2003	0000	07/12/2006	1853

Subject:	NSA/METTWR/C2 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:	nsamettwr2hC2.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:	nsamettwr2hC2.b1: Atmospheric Pressure(AtmPress)

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DQRID : D060913.2

Start Date	Start Time	End Date	End Time
08/11/2006	1756	08/11/2006	1925

Subject:	NSA/METTWR/C2 - CMH data missing and/or incorrect during maintenance.
DataStreams:	nsamettwr2hC2.b1
Description:	CMH measured data was missing and the derived variables were incorrect due to routine maintenance.
Measurements:	nsamettwr2hC2.b1: Chilled Mirror Temperature(CMHTemp) Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH) Chilled Mirror Calculated Vapor Pressure(VPCMH) Chilled Mirror Calculated Relative Humidity(CMHRH) Chilled Mirror Dew Point(CMHDP)

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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 : D060913.4

Start Date	Start Time	End Date	End Time
08/11/2006	1952	08/11/2006	2006

Subject:	NSA/METTWR/C2 - Met data incorrect due to tower being lowered for maintenance.
DataStreams:	nsamettwr2hC2.b1
Description:	Data from the tower is not representative of local conditions due to the tower being lowered for radiometer change. Sensors not attached to the tower such as the Present Weather Sensor, the Chilled Mirror Hygrometer and the Barometer were not affected.
Measurements:	nsamettwr2hC2.b1: Vector Averaged Wind Speed(WinSpeed_U_WVT) 5m Average Calculated Dew Point(DP5m_AVG) Arithmetic Mean Wind Speed(WinSpeed_S_WVT) Standard Deviation of Vector Averaged Wind Direction(WinDir_SDU_WVT) Vector Averaged Wind Direction(WinDir_DU_WVT) Standard Deviation of 5m Calculated Vapor Pressure(VP5m_STD) 2m Average Temperature(T2m_AVG) 5m Average Temperature(T5m_AVG) 5m Average Relative Humidity(RH5m_AVG) Standard Deviation of 5m Calculated Dew Point(DP5m_STD) 5m Average Calculated Vapor Pressure(VP5m_AVG) Standard Deviation of 5m Relative Humidity(RH5m_STD) 2m Average Calculated Vapor Pressure(VP2m_AVG) 2m Average Relative Humidity(RH2m_AVG) Standard Deviation of 2m Relative Humidity(RH2m_STD) Standard Deviation of 2m Calculated Dew Point(DP2m_STD) Standard Deviation of 2m Calculated Vapor Pressure(VP2m_STD) Standard Deviation of 5m Temperature(T5m_STD) 2m Average Calculated Dew Point(DP2m_AVG) Standard Deviation of 2m Temperature(T2m_STD)

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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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