DQRs for Session: 113620 User:antarcticaCompleted: 08-08-2008

Data Quality Reports for Session: 113620 User: antarctica Completed: 08/08/2008

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D060913.3	NSA/METTWR/C2 - PWS data missing/incorrect due to maintenance.	nsamettwr2hC2.b1
D061128.1	NSA/METTWR/C2 - 2m Temp/RH sensor blocked with snow	nsamettwr2hC2.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 : 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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