DQRs for Session: 142643 User:mcadedduCompleted: 05-25-2012

Data Quality Reports for Session: 142643 User: mcadeddu Completed: 05/25/2012

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D071002.1	NSA/SKYRAD/C1 - Preventive maintenance	nsaskyrad60sC1.b1, nsaskyrad20sC1.a0
D071025.1	NSA/SKYRAD/C1 - Reprocessed: Incorrect calibration coefficient	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D080107.2	NSA/SKYRAD/C1 - Instrument cleaning effects	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D080222.3	NSA/SKYRAD/C1 - IRT mirror heater failure	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D080418.1	NSA/SKYRAD/C1 - Direct and Diffuse incorrect	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D080630.1	NSA/SKYRAD/C1 - Tracker inoperative	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D090318.1	NSA/SKYRAD/C1 - IRT covered with snow	nsaskyrad60sC1.b1
D100211.1	NSA/SKYRAD/C1 - Frosting/Condensation	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D110817.6	NSA/SKYRAD/C1 - Reprocessed: Incorrect calibration coefficients	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D110902.1	NSA/SKYRAD/C1 - Incorrect data during power outage	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D111010.1	NSA/SKYRAD/C1 - Noisy data due to grounding issue	nsaqcrad1longC1.c1, nsaskyrad60sC1.b1

DQRID : D071002.1

Start Date	Start Time	End Date	End Time
09/30/2007	1937	10/03/2007	0300

Subject:	NSA/SKYRAD/C1 - Preventive maintenance
DataStreams:	nsaskyrad60sC1.b1, nsaskyrad20sC1.a0
Description:	Preventive maintenance to rebuild ventilator fan and exchange instruments during this time removed Skyrad instruments from operation. Most data collected are not scientifically relevant.
Measurements:	nsaskyrad60sC1.b1: down_long_hemisp_shaded2_std down_long_hemisp_unshaded_std psps_mean psps_min down_long_hemisp_shaded2_max pirs_mean Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) uvb_mean nip_min down_long_hemisp_shaded1_max pir1_sd pirs_min short_direct_normal_std pirs_max Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min) psps_sd Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Minima(down_long_hemisp_unshaded_min) Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Maxima(down_long_hemisp_unshaded_max) psp1_min psp1_max Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) down_short_diffuse_hemisp_std pir1_mean nip_max psp1_mean Downwelling Ultra-Violet Irradiance, UV Biometer(down_uvb) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) uvb_min Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) down_uvb_std Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) external_voltage Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Ultra-Violet Irradiance, UV Biometer, Maxima(down_uvb_max) nip_mean uvb_sd down_short_hemisp_std Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer1(down_long_hemisp_shaded1) uvb_max pirs_sd Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer2(down_long_hemisp_shaded2) psp1_sd Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max) filename down_long_hemisp_shaded2_min Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded) nip_sd Downwelling Ultra-Violet Irradiance, UV Biometer, Minima(down_uvb_min) pir1_min Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) down_long_hemisp_shaded_std psps_max Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) pir1_max down_long_hemisp_shaded1_std down_long_hemisp_shaded1_min nsaskyrad20sC1.a0: inst_down_long_shaded1_case_resist inst_down_long_shaded1_dome_resist Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer2)(inst_down_long_hemisp_shaded2_tp) inst_down_long_shaded2_dome_resist inst_down_long_shaded2_case_resist inst_diffuse inst_direct_normal Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded1_tp) inst_global

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DQRID : D071025.1

Start Date	Start Time	End Date	End Time
10/03/2007	0359	10/25/2007	2148

Subject:	NSA/SKYRAD/C1 - Reprocessed: Incorrect calibration coefficient
DataStreams:	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	Installed Skyrad PSP (downwelling shortwave hemispheric irradiance) had calibration coefficient Rs applied when it should have used Rsc. ARM is using IR corrected Rsc and CFc coefficients for PSPs deployed at all facilities. PSP #32026 should use RSc@45=8.7578 ?V/W/m? and not Rs@45=8.6335. Reprocessed to correct downwelling shortwave hemispheric irradiance (DS) by: DS(new) = (DS(old) / 115.83 ) * 114.18 Reprocessing completed March 2008.
Measurements:	nsaskyrad60sC1.b1: Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) down_short_hemisp_std Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) nsaskyrad20sC1.a0: inst_global

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DQRID : D080107.2

Start Date	Start Time	End Date	End Time
12/16/2007	0000	12/24/2007	2359

Subject:	NSA/SKYRAD/C1 - Instrument cleaning effects
DataStreams:	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	Starting Dec 16th the Skyrad PIR1 and PIR2 (down_long_hemispheric)started differing by greater than 30W/m2 at times. This is much greater than expected for these instruments (typical is <10-15 W/m2). NSA OMIS reports and observer comments reveal that PM periodically clean the snow from the IRT and ventilator fans on Skyrad and Gndrad. In the case of the Skyrad PIRs, one lies in the wind shadow of the other and builds up more snow which is periodically cleaned out and then builds up again causing the PIR1 PIR2 discrepancies. Disregard down_long_hemispheric during this time period. However, data suggests PIR2 is most likely at fault - potentially use PIR1 data during this time period.
Measurements:	nsaskyrad60sC1.b1: inst_down_long_hemisp2_tp inst_down_long_hemisp2_case_temp inst_down_long_hemisp1_dome_temp down_long_hemisp2_min Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp1) down_long_hemisp2_std down_long_hemisp2_max inst_down_long_hemisp1_case_temp Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp2) down_long_hemisp1_min inst_down_long_hemisp1_tp down_long_hemisp1_std inst_down_long_hemisp2_dome_temp down_long_hemisp1_max nsaskyrad20sC1.a0: inst_down_long_hemisp1_dome_resist inst_down_long_hemisp2_tp inst_down_long_hemisp2_case_resist inst_down_long_hemisp2_dome_resist inst_down_long_hemisp1_tp inst_down_long_hemisp1_case_resist

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DQRID : D080222.3

Start Date	Start Time	End Date	End Time
12/16/2007	0000	02/11/2008	1135

Subject:	NSA/SKYRAD/C1 - IRT mirror heater failure
DataStreams:	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	The heater of the IRT gold mirror failed due to a broken wire (that probably occurred on 12/13 during maintenance of the solar tracker) allowing snow and frost to accumulate on the mirror until it was cleared during daily preventative maintenance. The problem was corrected when the heater wires were replaced.
Measurements:	nsaskyrad60sC1.b1: sky_ir_temp_min sky_ir_temp_std sky_ir_temp_max IR Brightness Temperature(sky_ir_temp) nsaskyrad20sC1.a0: inst_sky_ir_signal

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DQRID : D080418.1

Start Date	Start Time	End Date	End Time
04/17/2008	0632	04/23/2008	1815

Subject:	NSA/SKYRAD/C1 - Direct and Diffuse incorrect
DataStreams:	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	The short_direct_normal (NIP) instrument and cable were damaged by tracker rewind malfunction. Tracker and NIP replaced on 4/22 2200GMT but tracker not operational until 4/23 1815GMT. Thus, down_short_diffuse_hemisp (8-48) was not shaded 4/22 to 4/23. Do not use 8-48 data from 4/22 to 4/23. NIP data is not recoverable during entire time but can be estimated using component sum for each 1 minute data: Direct = (global - diffuse)/cos(zenith angle)
Measurements:	nsaskyrad60sC1.b1: Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) 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) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) down_short_diffuse_hemisp_std Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) nsaskyrad20sC1.a0: inst_diffuse inst_direct_normal

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DQRID : D080630.1

Start Date	Start Time	End Date	End Time
06/27/2008	2000	06/30/2008	1740

Subject:	NSA/SKYRAD/C1 - Tracker inoperative
DataStreams:	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	Tracker stopped working at this site during the time range specified. Reason for failure is unknown. Tracker power cycled and restarted by maintenance 06/30 2008 1740 GMT. The short_direct_normal (NIP) and down_short_diffuse_hemisp (8-48) data are bad during this time. Data are not recoverable.
Measurements:	nsaskyrad60sC1.b1: Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) down_short_diffuse_hemisp_std Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) nsaskyrad20sC1.a0: inst_diffuse inst_direct_normal

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DQRID : D090318.1

Start Date	Start Time	End Date	End Time
02/20/2009	1900	02/24/2009	0130

Subject:	NSA/SKYRAD/C1 - IRT covered with snow
DataStreams:	nsaskyrad60sC1.b1
Description:	The IRT mirror was buried with snow by the dew-line snow-blower.
Measurements:	nsaskyrad60sC1.b1: sky_ir_temp_min sky_ir_temp_std sky_ir_temp_max IR Brightness Temperature(sky_ir_temp)

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DQRID : D100211.1

Start Date	Start Time	End Date	End Time
02/09/2010	1500	02/09/2010	2300
01/18/2010	0345	01/21/2010	0030
01/24/2010	1930	01/26/2010	0800

Subject:	NSA/SKYRAD/C1 - Frosting/Condensation
DataStreams:	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	The down_long_hemisp1 varied up to 40 W/m^2 higher than down_long_hemisp2 during the affected time periods. Cold temperatures reported by the IRT suggest the issue is with PIR1. Icing or frost on PIR1 or within the ventilator may be to blame but ops reports can't substantiate this. Data from PIR1 should be avoided during these suspect time periods.
Measurements:	nsaskyrad60sC1.b1: down_long_hemisp1_min down_long_hemisp1_std Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp1) down_long_hemisp1_max nsaskyrad20sC1.a0: inst_down_long_hemisp1_tp inst_down_long_hemisp1_case_resist inst_down_long_hemisp1_dome_resist

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DQRID : D110817.6

Start Date	Start Time	End Date	End Time
07/20/2011	2229	07/25/2011	1843

Subject:	NSA/SKYRAD/C1 - Reprocessed: Incorrect calibration coefficients
DataStreams:	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	On 7/20/2011 starting 2229GMT ops replaced the Skyrad shortwave instruments (PSP/8-48/NIP) corresponding to the datastreams (down_short_hemisp, down_short_diffuse_hemisp, short_direct_normal) but the calibration coefficients weren't changed until 07/25/2011 1842GMT. Data were reprocessed and archived in September 2011.
Measurements:	nsaskyrad60sC1.b1: Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) down_short_diffuse_hemisp_std Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) down_short_hemisp_std short_direct_normal_std Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) nsaskyrad20sC1.a0: inst_global inst_diffuse inst_direct_normal

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DQRID : D110902.1

Start Date	Start Time	End Date	End Time
04/27/2011	1700	05/02/2011	0100

Subject:	NSA/SKYRAD/C1 - Incorrect data during power outage
DataStreams:	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	During a power outage the downwelling diffuse 8-48 and the downwelling shortwave direct were incorrect. The IRT was also affected during this time period.
Measurements:	nsaskyrad60sC1.b1: Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) sky_ir_temp_min sky_ir_temp_max Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) down_short_diffuse_hemisp_std Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) sky_ir_temp_std short_direct_normal_std Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) IR Brightness Temperature(sky_ir_temp) nsaskyrad20sC1.a0: inst_diffuse inst_sky_ir_signal inst_direct_normal

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DQRID : D111010.1

Start Date	Start Time	End Date	End Time
09/02/2011	0022	09/24/2011	0145

Subject:	NSA/SKYRAD/C1 - Noisy data due to grounding issue
DataStreams:	nsaqcrad1longC1.c1, nsaskyrad60sC1.b1
Description:	Improper grounding of the IRT serial cable connection caused significant noise in the signals of the other SKYRAD instruments. It was corrected by disconnecting the serial cable from the RocketPort.
Measurements:	nsaskyrad60sC1.b1: inst_down_long_hemisp2_tp Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp1) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) down_short_hemisp_std down_long_hemisp1_min inst_down_long_hemisp1_tp short_direct_normal_std inst_down_long_hemisp2_dome_temp down_long_hemisp1_max inst_down_long_hemisp2_case_temp Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) inst_down_long_hemisp1_dome_temp down_long_hemisp2_min Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) down_short_diffuse_hemisp_std down_long_hemisp2_std down_long_hemisp2_max Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp2) inst_down_long_hemisp1_case_temp Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) down_long_hemisp1_std Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) nsaqcrad1longC1.c1: Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)

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