DQRs for Session: 104403 User:motoyoitohCompleted: 02-20-2007

Data Quality Reports for Session: 104403 User: motoyoitoh Completed: 02/20/2007

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D020814.8	NSA/SKYRAD/C1 - reprocess: PIR identified as unshaded is really shaded	nsaskyrad60sC1.a1
D021213.2	NSA/SKYRAD/C1 - NIP shaded by skyrad stand around local midnight	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021213.4	NSA/SKYRAD/C1 - PSP shaded by MFRSR after local midnight	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D030304.1	NSA/SKYRAD/C1: Noisy PIR data at Barrow	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D030510.2	NSA/SKYRAD/C1 - IRT measurements during precipitation events	nsaskyrad60sC1.a1
D030819.2	NSA/SKYRAD/C1 - IRT failed	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D030820.1	NSA/SKYRAD/C1 - IRT incorrectly configured	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D031226.1	NSA/SKYRAD/C1 - NSA B&W nighttime offset in Barrow too large	nsaskyradC1.00, nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D040129.2	NSA/SKYRAD/C1 - Noisy PIR data at Barrow	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1

DQRID : D020814.8

Start Date	Start Time	End Date	End Time
05/15/2002	1905	06/25/2002	2359

Subject:	NSA/SKYRAD/C1 - reprocess: PIR identified as unshaded is really shaded
DataStreams:	nsaskyrad60sC1.a1
Description:	On 5/15/02 the Global PIR was moved from the unshaded position on the Skyrad stand to a shaded spot on the tracker. It is still using the same Logger channel as it did as an unshaded PIR even though it is now shaded.
Measurements:	nsaskyrad60sC1.a1: Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Minima(down_long_hemisp_unshaded_min) Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Standard Deviation(down_long_hemisp_unshaded_std) Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Maxima(down_long_hemisp_unshaded_max) Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded)

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DQRID : D021213.2

Start Date	Start Time	End Date	End Time
05/01/1999	0000	08/10/1999	0000
05/01/2000	0000	08/10/2000	0000
05/01/2001	0000	08/10/2001	0000
05/01/2002	0000	08/10/2002	0000

Subject:	NSA/SKYRAD/C1 - NIP shaded by skyrad stand around local midnight
DataStreams:	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:	Around local midnight 9:30-10:30 GMT during summer clear sky the normal incidence pyranometer is shaded by the instrument stand.This causes the reading to be 0 W/m2. If cosine correction is applied for irradiance calulations this effect is negligible due to the low solar angle.
Measurements:	nsaskyrad60sC1.a1: NIP maximum(nip_max) NIP standard deviation(nip_sd) NIP minimum(nip_min) NIP mean(nip_mean) nsaskyrad60sC1.b1: NIP maximum(nip_max) NIP standard deviation(nip_sd) NIP minimum(nip_min) NIP mean(nip_mean)

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DQRID : D021213.4

Start Date	Start Time	End Date	End Time
05/01/1999	0000	08/10/1999	0000
05/01/2000	0000	08/10/2000	0000
05/01/2001	0000	08/10/2001	0000
05/01/2002	0000	08/10/2002	0000

Subject:	NSA/SKYRAD/C1 - PSP shaded by MFRSR after local midnight
DataStreams:	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:	Just past local midnight (11:00-11:40 GMT during summer clear sky) the global hemispherical pyranometer is shaded by the MFRSR instrument for about 40 minutes. This causes the reading to be 0 W/m2. This effect would be negligible in a daily average due to the low solar angle.
Measurements:	nsaskyrad60sC1.a1: PSP1 unshaded mean(psp1_mean) PSP1 unshaded minimum(psp1_min) PSP1 unshaded maximum(psp1_max) PSP1 unshaded standard deviation(psp1_sd) nsaskyrad60sC1.b1: PSP1 unshaded maximum(psp1_max) PSP1 unshaded standard deviation(psp1_sd) PSP1 unshaded mean(psp1_mean) PSP1 unshaded minimum(psp1_min)

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DQRID : D030304.1

Start Date	Start Time	End Date	End Time
05/24/2002	0000	06/24/2002	2359

Subject:	NSA/SKYRAD/C1: Noisy PIR data at Barrow
DataStreams:	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:	PIR1 data is noisy throughout the entire period, though there is still a definite signal through the noise.
Measurements:	nsaskyrad60sC1.a1: Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) nsaskyrad60sC1.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)

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DQRID : D030510.2

Start Date	Start Time	End Date	End Time
02/14/1998	2330	03/03/2003	2359

Subject:	NSA/SKYRAD/C1 - IRT measurements during precipitation events
DataStreams:	nsaskyrad60sC1.a1
Description:	The IRT measurement of sky/cloud temperature was in question during precipitation events because rain or snow could accumulate in the upward-pointed lens barrel. This was corrected by reorienting the IRT to measure the sky temperature as reflected by a gold mirror.
Measurements:	nsaskyrad60sC1.a1: Sky/Cloud Infra-Red Temperature(sky_ir_temp) Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std) Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max) Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)

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DQRID : D030819.2

Start Date	Start Time	End Date	End Time
04/05/2002	2330	06/27/2002	1920

Subject:	NSA/SKYRAD/C1 - IRT failed
DataStreams:	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
Measurements:	nsaskyrad60sC1.a1: Sky/Cloud Infra-Red Temperature(sky_ir_temp) Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std) Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max) Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min) nsaskyrad60sC1.b1: Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min) Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max) Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std) Sky/Cloud Infra-Red Temperature(sky_ir_temp)

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DQRID : D030820.1

Start Date	Start Time	End Date	End Time
06/27/2002	1920	07/10/2002	1900

Subject:	NSA/SKYRAD/C1 - IRT incorrectly configured
DataStreams:	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:	The IRT was removed for repair and replaced with a spare that was not configured properly. Data are incorrect.
Measurements:	nsaskyrad60sC1.a1: Sky/Cloud Infra-Red Temperature(sky_ir_temp) Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std) Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max) Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min) nsaskyrad60sC1.b1: Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min) Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max) Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std) Sky/Cloud Infra-Red Temperature(sky_ir_temp)

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DQRID : D031226.1

Start Date	Start Time	End Date	End Time
08/20/2001	0000	01/23/2002	0000

Subject:	NSA/SKYRAD/C1 - NSA B&W nighttime offset in Barrow too large
DataStreams:	nsaskyradC1.00, nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:	This problem only became apparent as NSA C1 nights became long enough for full darkness. The shaded global diffuse instrument (Eppley 8-48) showed a negative nighttime offset larger than the expected 0 to -4 W/m2. Typically -5 to -8 W/m2. This size of offset is not uncommon with Eppley PSPs but not observed with Eppley 8-48s. The problem was corrected with replacement of mounting screws which were creating a ground loop.
Measurements:	nsaskyrad60sC1.a1: PSP shaded minimum(psps_min) PSP shaded maximum(psps_max) PSP shaded mean(psps_mean) PSP shaded standard deviation(psps_sd) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) nsaskyradC1.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) nsaskyrad60sC1.b1: Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) PSP shaded maximum(psps_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) PSP shaded minimum(psps_min) PSP shaded mean(psps_mean) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) PSP shaded standard deviation(psps_sd) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)

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DQRID : D040129.2

Start Date	Start Time	End Date	End Time
06/25/2002	0000	01/16/2003	2359

Subject:	NSA/SKYRAD/C1 - Noisy PIR data at Barrow
DataStreams:	nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:	PIR1 data is noisy throughout the entire period, though there is still a definite signal through the noise.
Measurements:	nsaskyrad60sC1.a1: Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard Deviation(down_long_hemisp_shaded1_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1) nsaskyrad60sC1.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard Deviation(down_long_hemisp_shaded1_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)

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