DQRs for Session: 183532 User:rowec1Completed: 02-16-2017

Data Quality Reports for Session: 183532 User: rowec1 Completed: 02/16/2017

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected	Data Quality Metric
D140114.2	SGP/SASHE/C1 - Temperature controller disabled	sgpsashenirC1.b1	Suspect
D140822.2	SGP/SASHE/C1 - Instrument problem	sgpsashenirC1.b1	Incorrect
D140823.1	SGP/SASHE/C1 - Instrument off-line for repair	sgpsashenirC1.b1	Missing
D140823.2	SGP/SASHE/C1 - Severe shadowband alignment issue	sgpsashenirC1.b1	Incorrect
D150121.1	MAO/PGH/PVC/SGP/SASHE/C1 - Reprocess: Stray light contamination at extreme wavelengths	sgpsashenirC1.b1	Suspect
D151231.1	SGP/SASHE/C1 - Hard Drive Failure	sgpsashenirC1.b1	Missing
D160104.7	SGP Site Power Outage Due to Winter Storm	sgpsashenirC1.b1	Does not affect quality
D160825.4	SGP/SASHE/C1 - Poor alignment, banding issues	sgpsashenirC1.b1	Incorrect

DQRID : D140114.2

Start Date	Start Time	End Date	End Time	Data Quality Metric
12/20/2013	1200	01/14/2014	2000	Suspect

Subject:	SGP/SASHE/C1 - Temperature controller disabled
DataStreams:	sgpsashenirC1.b1
Description:	After servicing of the SASHe on Dec 20, 2013 a temperature controller was left in a stand-by mode. The situation was corrected slightly before 20:00 UT on Jan 14, 2014. Both the "vis" and "nir" spectrometers have some potential for temperature sensitivity but the impact should not be severe given that the system is housed within a climate controlled building and the temperature gradients are small.
Measurements:	sgpsashenirC1.b1: Direct horizontal solar irradiance from InGaAs linear array spectrometer(direct_horizontal_spectrometer_nir) Total hemispheric irradiance component, InGaAs linear array spectrometer(total_hemisp_spectrometer_nir) Diffuse hemispheric irradiance component, InGaAs linear array spectrometer(diffuse_hemisp_spectrometer_nir) responsivity_spectrometer_nir Direct normal solar irradiance, InGaAs linear array spectrometer(direct_normal_spectrometer_nir)

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DQRID : D140822.2

Start Date	Start Time	End Date	End Time	Data Quality Metric
04/27/2014	1630	04/27/2014	2030	Incorrect
05/16/2014	1630	05/16/2014	2030	Incorrect
04/28/2014	1630	04/28/2014	2030	Incorrect
05/24/2014	1630	05/24/2014	2030	Incorrect
05/28/2014	1630	05/28/2014	2030	Incorrect
05/17/2014	1630	05/17/2014	2030	Incorrect
04/24/2014	1630	04/24/2014	2030	Incorrect
05/15/2014	1630	05/15/2014	2030	Incorrect
05/13/2014	1630	05/13/2014	2030	Incorrect
04/23/2014	1630	04/23/2014	2030	Incorrect
05/22/2014	1630	05/22/2014	2030	Incorrect
04/22/2014	1630	04/22/2014	2030	Incorrect
05/21/2014	1630	05/21/2014	2030	Incorrect
05/26/2014	1630	05/26/2014	2030	Incorrect
05/27/2014	1630	05/27/2014	2030	Incorrect
04/21/2014	1630	04/21/2014	2030	Incorrect
05/23/2014	1630	05/23/2014	2030	Incorrect
05/25/2014	1630	05/25/2014	2030	Incorrect
05/14/2014	1630	05/14/2014	2030	Incorrect
04/25/2014	1630	04/25/2014	2030	Incorrect
05/19/2014	1630	05/19/2014	2030	Incorrect
05/18/2014	1630	05/18/2014	2030	Incorrect
05/20/2014	1630	05/20/2014	2030	Incorrect
04/26/2014	1630	04/26/2014	2030	Incorrect

Subject:	SGP/SASHE/C1 - Instrument problem
DataStreams:	sgpsashenirC1.b1
Description:	The SASHe azimuth stage began to exhibit wear and lose the ability to consistently track the sun, ultimately leading to incorrect identification of the direct and diffuse irradiance components - especially in the hours around solar noon. Total hemispheric irradiances are of acceptable quality.
Measurements:	sgpsashenirC1.b1: Direct horizontal solar irradiance from InGaAs linear array spectrometer(direct_horizontal_spectrometer_nir) Diffuse hemispheric irradiance component, InGaAs linear array spectrometer(diffuse_hemisp_spectrometer_nir) Direct normal solar irradiance, InGaAs linear array spectrometer(direct_normal_spectrometer_nir)

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DQRID : D140823.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
05/28/2014	2155	07/01/2014	1822	Missing

Subject:	SGP/SASHE/C1 - Instrument off-line for repair
DataStreams:	sgpsashenirC1.b1
Description:	Instrument was returned for repair of azimuth stage.
Measurements:	sgpsashenirC1.b1: time chiller_dewpoint Atmospheric pressure(atmos_pressure) base_time collector_x_tilt_std chiller_temperature time_offset airmass solar_zenith cosine_correction_computed Direct horizontal solar irradiance from InGaAs linear array spectrometer(direct_horizontal_spectrometer_nir) East longitude(lon) number_of_scans_spectrometer_nir Direct normal solar irradiance, InGaAs linear array spectrometer(direct_normal_spectrometer_nir) collector_y_tilt_std collector_temperature mio_rh North latitude(lat) mio_temperature_trh collector_dewpoint ad_temperature_spectrometer_nir test_incident_angle Total hemispheric irradiance component, InGaAs linear array spectrometer(total_hemisp_spectrometer_nir) cosine_solar_zenith_angle solar_azimuth bench_temperature_spectrometer_nir cosine_correction_lowsun band_azimuth wavelength_nir diffuse_correction chiller_rh Diffuse hemispheric irradiance component, InGaAs linear array spectrometer(diffuse_hemisp_spectrometer_nir) collector_y_tilt cosine_correction_hisun integration_time_spectrometer_nir cosine_test_incident_angle collector_x_tilt mio_temperature_mems collector_rh responsivity_spectrometer_nir Altitude above mean sea level(alt)

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DQRID : D140823.2

Start Date	Start Time	End Date	End Time	Data Quality Metric
07/03/2014	1200	08/12/2014	1559	Incorrect

Subject:	SGP/SASHE/C1 - Severe shadowband alignment issue
DataStreams:	sgpsashenirC1.b1
Description:	A severe shadowband misalignment prevented identification of direct and diffuse irradiance components for the entire solar day. Total hemispheric irradiance is nominally acceptable.
Measurements:	sgpsashenirC1.b1: Direct horizontal solar irradiance from InGaAs linear array spectrometer(direct_horizontal_spectrometer_nir) Diffuse hemispheric irradiance component, InGaAs linear array spectrometer(diffuse_hemisp_spectrometer_nir) Direct normal solar irradiance, InGaAs linear array spectrometer(direct_normal_spectrometer_nir)

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DQRID : D150121.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
03/22/2011	0000	08/19/2014	2359	Suspect

Subject:	MAO/PGH/PVC/SGP/SASHE/C1 - Reprocess: Stray light contamination at extreme wavelengths
DataStreams:	sgpsashenirC1.b1
Description:	The irradiance measurements at near the limits of the spectrometer wavelength ranges are subject to contamination from stray light within the spectrometer itself. This affects not only the basic measurement, but also can affect the calibration such that reported values may be either higher or lower than actual. Typically, this yields a high bias for measurements at the low wavelength limit and a low bias at the high wavelength limit. This causes opposite effects for AOD with a low bias at low wavelength and a high bias for high wavelengths.
Measurements:	sgpsashenirC1.b1: Direct horizontal solar irradiance from InGaAs linear array spectrometer(direct_horizontal_spectrometer_nir) Total hemispheric irradiance component, InGaAs linear array spectrometer(total_hemisp_spectrometer_nir) Diffuse hemispheric irradiance component, InGaAs linear array spectrometer(diffuse_hemisp_spectrometer_nir) Direct normal solar irradiance, InGaAs linear array spectrometer(direct_normal_spectrometer_nir)

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DQRID : D151231.1

Start Date	Start Time	End Date	End Time	Data Quality Metric
11/21/2015	0000	12/04/2015	0000	Missing

Subject:	SGP/SASHE/C1 - Hard Drive Failure
DataStreams:	sgpsashenirC1.b1
Description:	Hard drive failed. No data collected at all.
Measurements:	sgpsashenirC1.b1: time chiller_dewpoint Atmospheric pressure(atmos_pressure) base_time collector_x_tilt_std chiller_temperature time_offset airmass solar_zenith cosine_correction_computed Direct horizontal solar irradiance from InGaAs linear array spectrometer(direct_horizontal_spectrometer_nir) East longitude(lon) number_of_scans_spectrometer_nir Direct normal solar irradiance, InGaAs linear array spectrometer(direct_normal_spectrometer_nir) collector_y_tilt_std collector_temperature mio_rh North latitude(lat) mio_temperature_trh collector_dewpoint ad_temperature_spectrometer_nir test_incident_angle Total hemispheric irradiance component, InGaAs linear array spectrometer(total_hemisp_spectrometer_nir) cosine_solar_zenith_angle solar_azimuth bench_temperature_spectrometer_nir cosine_correction_lowsun band_azimuth wavelength_nir diffuse_correction chiller_rh Diffuse hemispheric irradiance component, InGaAs linear array spectrometer(diffuse_hemisp_spectrometer_nir) collector_y_tilt cosine_correction_hisun integration_time_spectrometer_nir cosine_test_incident_angle collector_x_tilt mio_temperature_mems collector_rh responsivity_spectrometer_nir Altitude above mean sea level(alt)

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DQRID : D160104.7

Start Date	Start Time	End Date	End Time	Data Quality Metric
12/26/2015	0000	01/01/2016	2359	Does not affect quality

Subject:	SGP Site Power Outage Due to Winter Storm
DataStreams:	sgpsashenirC1.b1
Description:	On Saturday and Sunday, December 26 and 27th a powerful winter storm (Goliath) brought sleet and freezing rain to much of Oklahoma with wind gusts of 45 MPH at times. The result was very very slick roads and mass power outages. The SGP central facility lost power at 8:55 PM CDT on Sunday, December 27th. The power was restored on 7:56 PM CDT on Wednesday, December 30th Site Emergency procedures were activated and Technicians drained water out of instrument reservoirs and other measures as needed, early Monday morning. On Wednesdays as roads and power started was restored to much of the areas east of I-35 , Site Technicians performed maintenance on several Extended Facilities. During this period, data are potentially missing, incorrect, or suspect. Carefully inspect the data before use.
Measurements:	sgpsashenirC1.b1: chiller_dewpoint time Atmospheric pressure(atmos_pressure) collector_x_tilt_std base_time chiller_temperature solar_zenith airmass time_offset cosine_correction_computed Direct horizontal solar irradiance from InGaAs linear array spectrometer(direct_horizontal_spectrometer_nir) East longitude(lon) number_of_scans_spectrometer_nir Direct normal solar irradiance, InGaAs linear array spectrometer(direct_normal_spectrometer_nir) collector_y_tilt_std collector_temperature mio_rh North latitude(lat) mio_temperature_trh collector_dewpoint test_incident_angle ad_temperature_spectrometer_nir Total hemispheric irradiance component, InGaAs linear array spectrometer(total_hemisp_spectrometer_nir) cosine_solar_zenith_angle solar_azimuth bench_temperature_spectrometer_nir cosine_correction_lowsun band_azimuth wavelength_nir diffuse_correction chiller_rh Diffuse hemispheric irradiance component, InGaAs linear array spectrometer(diffuse_hemisp_spectrometer_nir) collector_y_tilt cosine_correction_hisun integration_time_spectrometer_nir cosine_test_incident_angle collector_x_tilt mio_temperature_mems collector_rh responsivity_spectrometer_nir Altitude above mean sea level(alt)

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DQRID : D160825.4

Start Date	Start Time	End Date	End Time	Data Quality Metric
08/02/2016	0000	08/17/2016	1000	Incorrect

Subject:	SGP/SASHE/C1 - Poor alignment, banding issues
DataStreams:	sgpsashenirC1.b1
Description:	Banding issues leading to imperfect shading dominate the data for this period. At times the banding issues were quite subtle leading to problems only for limited periods of the day especially when the sun is low and this leads to serious calibration errors.
Measurements:	sgpsashenirC1.b1: Diffuse hemispheric irradiance component, InGaAs linear array spectrometer(diffuse_hemisp_nir) Direct horizontal solar irradiance from InGaAs linear array spectrometer(direct_horizontal_nir) Total hemispheric irradiance component, InGaAs linear array spectrometer(total_hemisp_nir) Direct normal solar irradiance, InGaAs linear array spectrometer(direct_normal_nir)

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