DQRs for Session: 136463 User:ql_dataCompleted: 07-28-2011

Data Quality Reports for Session: 136463 User: ql_data Completed: 07/28/2011

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D040421.3	NSA/SKYRAD/C1 - itermittant IRT bias	nsaskyrad60sC1.b1
D050604.1	NSA/SKYRAD/C1 - Datalogger grounding problem	nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1
D051101.2	NSA/SKYRAD/C1 - IRT failure	nsaskyrad60sC1.b1
D051107.2	NSA/SKYRAD/C1 - Instrument logger, possible gounding problem	nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D051202.1	NSA/SKYRAD/C1 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2 downwelling longwave	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D060209.5	NSA/SKYRAD/C1 - Power outage affecting some SKYRAD instruments	nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D060217.2	NSA/SKYRAD/C1 - Instrument noise	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D060630.37	NSA/SKYRAD/C1 - Reprocess: Longwave Calibration error	nsaskyrad60sC1.b1
D060724.2	NSA/SKYRAD/C1 - Summer solstice shading of radiometers	nsaskyrad60sC1.b1

DQRID : D040421.3

Start Date	Start Time	End Date	End Time
03/28/2003	0200	06/21/2006	0215

Subject:	NSA/SKYRAD/C1 - itermittant IRT bias
DataStreams:	nsaskyrad60sC1.b1
Description:	A problem with the SKYRAD IRT that itermittantly produced a gradual increase in the sky temperature measurement then a sudden correction, as compared to AERI, appears to have been caused by a combination of a failing IR detector, a poor signal cable, a contaminated (with condensation or frost) mirror or lens, and low ambient temperatures. The positive bias was apparently not consistant in either frequency or duration but on days when the unusual behavior is observed, it usually occurred from about 00:00 to 06:00 local time. The instrument was repaired and recalibrated and the signal cable replaced.
Measurements:	nsaskyrad60sC1.b1: sky_ir_temp_min sky_ir_temp_std sky_ir_temp_max Temperature, Sky Infra-Red(sky_ir_temp)

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DQRID : D050604.1

Start Date	Start Time	End Date	End Time
05/13/2005	1100	05/13/2005	2000
05/19/2005	0830	05/24/2005	1800
05/28/2005	1730	05/29/2005	1800
05/31/2005	1500	06/04/2005	0900
06/10/2005	0300	06/10/2005	0400

Subject:	NSA/SKYRAD/C1 - Datalogger grounding problem
DataStreams:	nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1
Description:	Both PIRs reported unreasonable high readings with coincident low reading from the IRT. Since both PIR instruments exhibited exactly the same behaviour and the IRT an opposite response during large suspect data excursions this indicates that the false signal maybe the result of poor grounding. The PIR1,2 data and the IRT data are most adversely affected. During the problem periods PIR irradiance increased (typ pos 200-300W/m2) while the IRT response was negative (typ neg 20-30W/m2) but followed the response of the PIR. The Skyrad shortwave instruments were also affected but to much less extent (within their uncertainties). Data quality flags are typically not triggered during these problem periods. Data logger grounding was improved on 6/10 2005. The problem hasn't re-occurred since that time.
Measurements:	nsaskyradC1.00: Raw data stream - documentation not supported nsaskyrad60sC1.b1: down_long_hemisp_shaded2_std psps_mean alt Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) uvb_mean nip_min down_long_hemisp_shaded1_max short_direct_normal_std Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min) 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) nip_max sky_ir_temp_std base_time uvb_min down_uvb_std external_voltage Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) nip_mean Downwelling Ultra-Violet Irradiance, UV Biometer, Maxima(down_uvb_max) uvb_sd uvb_max pirs_sd Temperature, Sky Infra-Red(sky_ir_temp) psp1_sd Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded) nip_sd lon Downwelling Ultra-Violet Irradiance, UV Biometer, Minima(down_uvb_min) internal_voltage Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) down_long_hemisp_shaded_std irt1_sd Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) pir1_max down_long_hemisp_shaded1_min down_long_hemisp_unshaded_std sky_ir_temp_min sky_ir_temp_max psps_min down_long_hemisp_shaded2_max pirs_mean logger_temp pirs_min pir1_sd pirs_max psps_sd down_short_diffuse_hemisp_std pir1_mean psp1_mean Downwelling Ultra-Violet Irradiance, UV Biometer(down_uvb) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) irt1_mean lat 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) down_short_hemisp_std Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer1(down_long_hemisp_shaded1) irt1_min Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer2(down_long_hemisp_shaded2) bit_data time_offset irt1_max filename Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max) down_long_hemisp_shaded2_min pir1_min psps_max down_long_hemisp_shaded1_std nsaskyrad20sC1.a1: inst_down_long_unshaded_case_resist pir2_uncorr_irradiance base_time inst_down_uvb_temp inst_down_long_shaded2_dome_resist Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer2)(inst_down_long_hemisp_unshaded_tp) inst_down_long_shaded2_case_resist lat pir1_uncorr_irradiance pir1_case_therm alt lon inst_down_long_unshaded_dome_resist filename pir2_dome_therm Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp) Irradiance, ultraviolet, downwelling (UV Biometer)(inst_down_uvb_irradiance) time_offset inst_down_long_shaded_dome_resist inst_down_long_shaded1_case_resist inst_down_long_shaded_case_resist uvb_temp inst_down_long_shaded1_dome_resist uvb_uncorr_irradiance pir2_case_therm Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer2)(inst_down_long_hemisp_shaded2_tp) Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded1_tp) pir1_dome_therm nsaskyrad20sC1.a0: inst_sky_ir_signal inst_down_long_shaded2_case_resist Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded1_tp) inst_global alt time_offset 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_diffuse lat base_time inst_direct_normal time lon

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DQRID : D051101.2

Start Date	Start Time	End Date	End Time
10/31/2005	0600	01/18/2006	0032

Subject:	NSA/SKYRAD/C1 - IRT failure
DataStreams:	nsaskyrad60sC1.b1
Description:	The IRT failed and was replaced with a spare.
Measurements:	nsaskyrad60sC1.b1: sky_ir_temp_min sky_ir_temp_std sky_ir_temp_max Temperature, Sky Infra-Red(sky_ir_temp)

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DQRID : D051107.2

Start Date	Start Time	End Date	End Time
10/22/2005	1230	10/22/2005	1600

Subject:	NSA/SKYRAD/C1 - Instrument logger, possible gounding problem
DataStreams:	nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	Possible Skyrad datalogger grounding issues have re-appeared at NSA/C1 for only this short time period. Anomalous data readings during the time range specified are similar to problem which occurred in early summer 2005.
Measurements:	nsaskyradC1.00: Raw data stream - documentation not supported nsaskyrad60sC1.b1: down_long_hemisp_shaded2_std down_long_hemisp_unshaded_std sky_ir_temp_min sky_ir_temp_max psps_mean psps_min down_long_hemisp_shaded2_max pirs_mean alt Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) logger_temp nip_min uvb_mean 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 sky_ir_temp_std Downwelling Ultra-Violet Irradiance, UV Biometer(down_uvb) base_time Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) irt1_mean uvb_min Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) lat 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) nip_mean Downwelling Ultra-Violet Irradiance, UV Biometer, Maxima(down_uvb_max) uvb_sd down_short_hemisp_std Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer1(down_long_hemisp_shaded1) uvb_max pirs_sd irt1_min Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer2(down_long_hemisp_shaded2) bit_data Temperature, Sky Infra-Red(sky_ir_temp) time_offset psp1_sd irt1_max 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) lon nip_sd pir1_min Downwelling Ultra-Violet Irradiance, UV Biometer, Minima(down_uvb_min) Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded) internal_voltage down_long_hemisp_shaded_std Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) irt1_sd psps_max 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 inst_sky_ir_signal 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 lat base_time inst_direct_normal time Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded1_tp) inst_global lon alt time_offset

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DQRID : D051202.1

Start Date	Start Time	End Date	End Time
11/04/2004	1900	09/09/2005	2142

Subject:	NSA/SKYRAD/C1 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2 downwelling longwave
DataStreams:	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	The excitation delays using in measuring the PIR1 case thermistor commonly named "Case1" and the PIR2 dome thermistor called "Dome2" were discovered to have been incorrectly set to 0 in the Skyrad datalogger program when the new CR23X based Skyrad loggers were installed. The result of no delay in these measurements results in an error in the measured resistance of the thermistors, Case1 and Dome2 and thus the calculated PIR1 and PIR2 irradiances. The errors are inversely proportial to temperature. Users can apply the temperature dependent irradiance corrections shown in the table below. Recall that the reported uncertainty of PIRs is typically +-.25% to +-.5% or 1 to 2 W/m2. The error corrections become the same order of magnitude or larger than the instrument uncertainties at or below 260K or 9F. Correction Table for Skyrad (TWP and NSA) DIR1 and DIR2 Irradiance DIR1 DIR1 DIR2 DIR2 T[F] Tcase[K] Correction[W/m2] Tdome[K] Correction[W/m2] 109.4 316.13 0.00 316.13 0.00 100.5 311.20 -0.15 311.20 0.12 93.2 307.14 -0.12 307.14 0.10 87.0 303.70 -0.10 303.70 0.08 81.6 300.70 -0.17 300.70 0.14 77.0 298.15 -0.22 298.15 0.18 59.4 288.35 -0.34 288.35 0.27 47.4 281.72 -0.23 281.72 0.18 38.5 276.74 -0.42 276.74 0.34 31.3 272.77 -0.48 272.77 0.38 25.4 269.48 -0.61 269.48 0.49 20.3 266.67 -0.67 266.67 0.54 16.0 264.25 -0.82 264.25 0.66 12.1 262.11 -0.98 262.11 0.79 8.7 260.19 -0.97 260.19 0.78 5.6 258.46 -1.07 258.46 0.86 2.7 256.89 -1.17 256.89 0.94 0.1 255.44 -1.33 255.44 1.07 -2.3 254.11 -1.41 254.11 1.13 -4.5 252.87 -1.43 252.87 1.15 -6.6 251.71 -1.52 251.71 1.22 -8.5 250.63 -1.63 250.63 1.31 -10.4 249.62 -1.73 249.62 1.39 -12.2 248.58 -1.79 248.58 1.44 -15.4 246.82 -1.93 246.82 1.55 -18.3 245.23 -2.05 245.23 1.65 -20.9 243.78 -2.22 243.78 1.78 -23.3 242.44 -2.36 242.44 1.89 -25.5 241.21 -2.58 241.21 2.07 -27.5 240.07 -2.65 240.07 2.13 -29.5 239.01 -2.75 239.01 2.21 -31.3 238.00 -3.02 238.00 2.42
Measurements:	nsaskyrad60sC1.b1: down_long_hemisp_shaded2_std down_long_hemisp_shaded2_min down_long_hemisp_shaded2_max down_long_hemisp_shaded1_max Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer1(down_long_hemisp_shaded1) down_long_hemisp_shaded1_std Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer2(down_long_hemisp_shaded2) down_long_hemisp_shaded1_min nsaskyrad20sC1.a0: Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded1_tp) Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer2)(inst_down_long_hemisp_shaded2_tp) inst_down_long_shaded1_case_resist inst_down_long_shaded2_dome_resist inst_down_long_shaded2_case_resist inst_down_long_shaded1_dome_resist

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DQRID : D060209.5

Start Date	Start Time	End Date	End Time
02/07/2006	0910	02/07/2006	2350

Subject:	NSA/SKYRAD/C1 - Power outage affecting some SKYRAD instruments
DataStreams:	nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	During the power outage the downwelling global measurement from the PSP instrument and downwelling diffuse 8-48 instrument shows a slight increase from -5 to +0 W/m2. This is due to removal of thermal offsets induced by the AC heater during the power outage. This heater is installed within the PSP ventilator - it is necessary for the NSA/C1 climate. The downwelling longwave PIR instrument is unaffected due to case and dome temperature corrections. The IRT is AC powered and was not operational during this time period.
Measurements:	nsaskyradC1.00: Raw data stream - documentation not supported 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) down_short_diffuse_hemisp_std Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) down_short_hemisp_std Temperature, Sky Infra-Red(sky_ir_temp) nsaskyrad20sC1.a0: inst_global inst_diffuse inst_sky_ir_signal

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DQRID : D060217.2

Start Date	Start Time	End Date	End Time
02/15/2006	1300	02/16/2006	1500

Subject:	NSA/SKYRAD/C1 - Instrument noise
DataStreams:	nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:	Skyrad data appears affected by noise creating bias in analog voltage readings on 02/15/2006 from 1300-1800GMT and again on 02/16/2006 from 1300-1500GMT. The second night the noise is attenuated significantly. By 02/17 no bias/noise is detectable. The thermistor measurements in PIR1 and PIR2 were unaffected during these excursions and showed no deviation from normal during the problem period. In addition, the onboard logger temperature and battery voltage read normal throughout. The problem has not reappeared as of 4/25/2006.
Measurements:	nsaskyrad60sC1.b1: down_long_hemisp_shaded2_std Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) sky_ir_temp_min sky_ir_temp_max Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) down_long_hemisp_shaded2_max Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) down_long_hemisp_shaded1_max down_short_hemisp_std Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer1(down_long_hemisp_shaded1) Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer2(down_long_hemisp_shaded2) short_direct_normal_std Temperature, Sky Infra-Red(sky_ir_temp) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) down_long_hemisp_shaded2_min Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) down_short_diffuse_hemisp_std Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) sky_ir_temp_std down_long_hemisp_shaded1_std Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) down_long_hemisp_shaded1_min nsaskyrad20sC1.a0: inst_down_long_shaded1_case_resist inst_down_long_shaded1_dome_resist inst_sky_ir_signal inst_direct_normal Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded1_tp) inst_global 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

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DQRID : D060630.37

Start Date	Start Time	End Date	End Time
11/04/2004	0300	12/21/2005	1853

Subject:	NSA/SKYRAD/C1 - Reprocess: Longwave Calibration error
DataStreams:	nsaskyrad60sC1.b1
Description:	Modified pyrgeometer calibration procedures were implemented beginning in December 2003. These modified procedures introduced a calibration bias in the longwave data. The previous procedures were re-implemented at all sites between December 2005 and February 2006 to restore proper calibrations. The data collected while the incorrect procedures were in place are being reprocessing to remove the calibration bias. Note, this also affected standard deviation, maximum and minimum data fields.
Measurements:	nsaskyrad60sC1.b1: Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer1(down_long_hemisp_shaded1) Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer2(down_long_hemisp_shaded2)

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DQRID : D060724.2

Start Date	Start Time	End Date	End Time
05/08/1999	0000	08/05/1999	0000
05/08/2000	0000	08/05/2000	0000
05/08/2001	0000	08/05/2001	0000
05/08/2002	0000	08/05/2002	0000
05/08/2003	0000	08/05/2003	0000
05/08/2004	0000	08/05/2004	0000
05/08/2005	0000	08/05/2005	0000
05/08/2006	0000	08/05/2006	0000

Subject:	NSA/SKYRAD/C1 - Summer solstice shading of radiometers
DataStreams:	nsaskyrad60sC1.b1
Description:	On and around the summer solstice, the NIP (Direct Normal shortwave measurement) and PSP (global hemispheic shortwave measurement) radiometers are shaded by other instruments or support structures. Shading azimuths have been determined for this site. The radiometer mentor suggests not using the data from the NIP and PSP radiometers when the sun is within the following azimuth bounds (typically from May 8th to August 5th of each year): Instrmt Obstruction AzStart AzEnd NIP rad table 346 358 NIP met tower 13 15 PSP mfrsr 6 16
Measurements:	nsaskyrad60sC1.b1: psps_sd psp1_sd Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) psps_mean psps_min Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) nip_sd Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) psp1_min psp1_max Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) nip_mean Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) nip_min psps_max nip_max psp1_mean down_short_hemisp_std short_direct_normal_std Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)

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