DQRs for Session: 153312 User:kimhyCompleted: 09-30-2013

Data Quality Reports for Session: 153312 User: kimhy Completed: 09/30/2013

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D120913.1	PVC/SKYRAD/M1 - Intake Fan Failure	pvcskyrad20sM1.a0, pvcskyrad60sM1.b1
D121008.1	PVC/SKYRAD/M1 - Reprocessed: Incorrect calibration coefficients	pvcskyrad20sM1.a0, pvcskyrad60sM1.b1
D121018.10	PVC/SKYRAD/M1 - Reprocess: Incorrect IRT Configuration	pvcskyrad60sM1.b1
D121024.3	PVC/SKYRAD/M1 - IRT failure	pvcskyrad20sM1.a0, pvcskyrad60sM1.b1
D121024.5	PVC/SKYRAD/M1 - IRT scale factor	pvcskyrad20sM1.a0, pvcskyrad60sM1.b1
D121128.4	PVC/SKYRAD/M1 - Instrument noise	pvcskyrad60sM1.b1, pvcskyrad20sM1.a0
D121217.8	PVC/SKYRAD/M1 - IRT disconnected	pvcskyrad60sM1.b1
D130227.6	PVC/SKYRAD/M1 - Tracker removed for storm	pvcskyrad20sM1.a0, pvcskyrad60sM1.b1

DQRID : D120913.1

Start Date	Start Time	End Date	End Time
06/25/2012	0000	08/28/2012	2045

Subject:	PVC/SKYRAD/M1 - Intake Fan Failure
DataStreams:	pvcskyrad20sM1.a0, pvcskyrad60sM1.b1
Description:	PSP (down_short_hemisp) ventilator fan failed from start of PVC deployment. Site ops repaired/replaced on 8/28. Instrument data are not recoverable. The down_short_hemisp data are not recoverable but can be re-constructed using the short_direct_normal and down_short_diffuse_hemispheric measurements and the following formula: Global = Direct * cos(zenith angle) + Diffuse
Measurements:	pvcskyrad20sM1.a0: inst_global pvcskyrad60sM1.b1: Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) down_short_hemisp_std

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DQRID : D121008.1

Start Date	Start Time	End Date	End Time
06/25/2012	0000	09/05/2012	2000

Subject:	PVC/SKYRAD/M1 - Reprocessed: Incorrect calibration coefficients
DataStreams:	pvcskyrad20sM1.a0, pvcskyrad60sM1.b1
Description:	Incorrect programs were used in Skyrad since PVC deployment period began. The Skyrad program was corrected 09/05/2012 approx 20:00GMT. Reprocessing will be required of all instruments at this station except the IRT. This will require applying the following corrections for the time range specified. Serial numbers(incorrectly applied): PIR1-DIR: 34306 PIR2-DIR: 34303 Diffuse PSP: 34284 NIP: 34097 PSP-DS: 34293 Serial numbers(correct): PIR1-DIR: 34303 PIR2-DIR: 34306 Diffuse PSP: 35751 NIP: 37285 PSP-DS: 37302 Data: Longwave requires reprocessing using the 20second datastream and applying the following k1 coefficients (note: the longwave instruments were swapped according to datalogger). down_long_hemisp1 (old cal) = 0.23041 down_long_hemisp1 (corr cal) = 0.24750 down_long_hemisp2 (old cal) = 0.24750 down_long_hemisp2 (corr cal) = 0.23041 Shortwave only requires application of the following corrections to 1min and 20 second data. down_short_diffuse_hemisp(corr) = down_short_diffuse_hemisp(old value)(104.45(corr cal)/120.91(incorr cal)) short_direct_normal(corr) = short_direct_normal(old value)(117.25(new cal)/124.97(incorr cal)) up_short_hemip(corr) = up_short_hemip(old value)*(119.21(new cal)/108.48(incorr cal)) Contact radiometer mentor with any comments/questions Reprocessing completed 20121217
Measurements:	pvcskyrad20sM1.a0: inst_down_long_hemisp1_case_resist inst_global inst_diffuse inst_direct_normal inst_down_long_hemisp2_case_resist inst_down_long_hemisp2_dome_resist inst_down_long_hemisp1_dome_resist inst_down_long_hemisp1_tp inst_down_long_hemisp2_tp pvcskyrad60sM1.b1: Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) down_long_hemisp2_std Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) inst_down_long_hemisp2_case_temp Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp1) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp2) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) inst_down_long_hemisp2_tp down_long_hemisp1_max down_long_hemisp2_min Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) down_long_hemisp1_std Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) down_short_diffuse_hemisp_std short_direct_normal_std down_long_hemisp2_max Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) down_short_hemisp_std inst_down_long_hemisp2_dome_temp inst_down_long_hemisp1_case_temp inst_down_long_hemisp1_dome_temp down_long_hemisp1_min inst_down_long_hemisp1_tp

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DQRID : D121018.10

Start Date	Start Time	End Date	End Time
06/29/2012	2240	10/18/2012	1259

Subject:	PVC/SKYRAD/M1 - Reprocess: Incorrect IRT Configuration
DataStreams:	pvcskyrad60sM1.b1
Description:	The SKYRAD IRT was installed temporarily (waiting for the new enclosure) in a vertical orientation, without the use of the gold mirror. When irt_comm was started, the emissivity parameter in the startup file was not changed to 1.000 compensate for the absence of the mirror, resulting in a positive bias of about 5 K. These data may be corrected by adjusting the radiance values for the difference in emmissivity.
Measurements:	pvcskyrad60sM1.b1: sky_ir_temp_min IR Brightness Temperature(sky_ir_temp) sky_ir_temp_max

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DQRID : D121024.3

Start Date	Start Time	End Date	End Time
10/01/2012	0550	10/12/2012	1459

Subject:	PVC/SKYRAD/M1 - IRT failure
DataStreams:	pvcskyrad20sM1.a0, pvcskyrad60sM1.b1
Description:	The IRT failed because of water intrusion.
Measurements:	pvcskyrad20sM1.a0: inst_sky_ir_signal pvcskyrad60sM1.b1: sky_ir_temp_std sky_ir_temp_min IR Brightness Temperature(sky_ir_temp) sky_ir_temp_max

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DQRID : D121024.5

Start Date	Start Time	End Date	End Time
10/18/2012	1300	10/22/2012	1259

Subject:	PVC/SKYRAD/M1 - IRT scale factor
DataStreams:	pvcskyrad20sM1.a0, pvcskyrad60sM1.b1
Description:	The IRT was replaced with a unit with the wrong analog output configuration, such that the sky temperature was below the measurable range, resulting in a constant output of 0 volts or 173.2 K.
Measurements:	pvcskyrad20sM1.a0: inst_sky_ir_signal pvcskyrad60sM1.b1: sky_ir_temp_std sky_ir_temp_min IR Brightness Temperature(sky_ir_temp) sky_ir_temp_max

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DQRID : D121128.4

Start Date	Start Time	End Date	End Time
10/19/2012	1345	10/19/2012	1515
10/22/2012	1340	10/22/2012	1415
10/23/2012	1245	10/23/2012	1640
10/16/2012	1948	10/17/2012	1642
10/05/2012	1400	10/05/2012	1510
10/18/2012	1618	10/18/2012	1630
10/18/2012	2018	10/18/2012	2035

Subject:	PVC/SKYRAD/M1 - Instrument noise
DataStreams:	pvcskyrad60sM1.b1, pvcskyrad20sM1.a0
Description:	All instruments on Skyrad exhibit intermittant erratic behavior from 10/05 through 10/23. Appears to have been an grounding issue with the IRT installed on Skyrad and replaced 10/17. After the last problem period on 10/23 the problem resolved itself without operator involvement. All data on Skyrad during these erratic behaviour periods are not recoverable. Bad data can generally be identified by screening vBatt for values outside normal operation range of 13.3-13.6V.
Measurements:	pvcskyrad20sM1.a0: inst_down_long_hemisp1_case_resist inst_global inst_diffuse inst_sky_ir_signal inst_direct_normal inst_down_long_hemisp2_case_resist inst_down_long_hemisp1_dome_resist inst_down_long_hemisp2_dome_resist inst_down_long_hemisp1_tp inst_down_long_hemisp2_tp pvcskyrad60sM1.b1: sky_ir_temp_std sky_ir_temp_min Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) down_long_hemisp2_std Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) inst_down_long_hemisp2_case_temp Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp1) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp2) inst_down_long_hemisp2_tp down_long_hemisp1_max Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) down_long_hemisp2_min down_long_hemisp1_std Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) down_short_diffuse_hemisp_std down_long_hemisp2_max short_direct_normal_std Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) down_short_hemisp_std inst_down_long_hemisp2_dome_temp inst_down_long_hemisp1_case_temp inst_down_long_hemisp1_dome_temp IR Brightness Temperature(sky_ir_temp) down_long_hemisp1_min sky_ir_temp_max inst_down_long_hemisp1_tp

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DQRID : D121217.8

Start Date	Start Time	End Date	End Time
07/11/2012	1200	07/15/2012	1135

Subject:	PVC/SKYRAD/M1 - IRT disconnected
DataStreams:	pvcskyrad60sM1.b1
Description:	The IRT was disconnected to diagnose PIR signal noise.
Measurements:	pvcskyrad60sM1.b1: sky_ir_temp_std sky_ir_temp_min IR Brightness Temperature(sky_ir_temp) sky_ir_temp_max

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DQRID : D130227.6

Start Date	Start Time	End Date	End Time
02/07/2013	2100	02/13/2013	1846

Subject:	PVC/SKYRAD/M1 - Tracker removed for storm
DataStreams:	pvcskyrad20sM1.a0, pvcskyrad60sM1.b1
Description:	Site preparation for a pending storm in Cape Cod Area included stowing the tracker for the affected period. During this time the only SKYRAD instruments with accurate measurements were down_short_hemisp (global horizontal shortwave pyranometer instrument), down_long_hemisp1 and down_long_hemisp2 (pyrgeometer instruments). The short_direct_normal (pyrheliometer DNI instrument) and down_short_diffuse_hemisp (8-48 shaded diffuse instrument) data are not recoverable. Additionally, there may have been undocumented periods of missing data during this time.
Measurements:	pvcskyrad20sM1.a0: inst_diffuse inst_direct_normal pvcskyrad60sM1.b1: Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) down_short_diffuse_hemisp_std short_direct_normal_std Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)

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