DQRs for Session: 150445 User:martina1ceCompleted: 05-28-2013

Data Quality Reports for Session: 150445 User: martina1ce Completed: 05/28/2013

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D101223.1	TWP/SKYRAD/C2 - Suspect PIR1 data	twpskyrad60sC2.b1, twpskyrad20sC2.a0
D110831.1	TWP/SKYRAD/C2 - Tracker failure	twpskyrad20sC2.a0, twpskyrad60sC2.b1
D111026.1	TWP/SKYRAD/C2 - IRT power failure	twpskyrad20sC2.a0, twpskyrad60sC2.b1
D120606.5	TWP/QCRAD/C2 - Downwelling LW too high	twpqcrad1longC2.c1, twpqcrad1longC2.c2, twpqcrad1longC2.s1, twpqcrad1longC2.s2
D120607.3	TWP/QCRAD/C2 - Tracker failure	twpqcrad1longC2.c1, twpqcrad1longC2.c2, twpqcrad1longC2.s1, twpqcrad1longC2.s2
D120813.1	TWP/SKYRAD/C2 - Downwelling LW #1 questionable	twpskyrad20sC2.a0, twpskyrad60sC2.b1
D121127.1	TWP/SKYRAD/C2 - Tracker Failure	twpskyrad20sC2.a0, twpskyrad60sC2.b1
D121128.2	TWP/SKYRAD/C2 - Tracker problem	twpskyrad20sC2.a0, twpskyrad60sC2.b1

DQRID : D101223.1

Start Date	Start Time	End Date	End Time
09/23/2010	2200	09/28/2010	2200
10/05/2010	2200	10/11/2010	0600

Subject:	TWP/SKYRAD/C2 - Suspect PIR1 data
DataStreams:	twpskyrad60sC2.b1, twpskyrad20sC2.a0
Description:	PIR1 was exhibiting unusual data excursions during the specified time ranges and data are suspect. The problem spontaneously resolved on October 11th without site ops action. The problem has not returned.
Measurements:	twpskyrad60sC2.b1: down_long_hemisp1_max down_long_hemisp1_std down_long_hemisp1_min inst_down_long_hemisp1_dome_temp Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp1) inst_down_long_hemisp1_case_temp twpskyrad20sC2.a0: inst_down_long_hemisp1_case_resist inst_down_long_hemisp1_dome_resist inst_down_long_hemisp1_tp

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DQRID : D110831.1

Start Date	Start Time	End Date	End Time
06/16/2011	2335	08/15/2011	0130

Subject:	TWP/SKYRAD/C2 - Tracker failure
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	Tracker failed on 6/16/2011. Ops replaced with a spare tracker. The affected instruments are the 8-48 (down_short_diffuse) and NIP (direct_normal) shortwave instruments. The down_long_hemisp1 and 2 (PIR1 and PIR2) performance may have been affected by exposure to direct sun.
Measurements:	twpskyrad60sC2.b1: inst_down_long_hemisp2_case_temp Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp2) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) down_long_hemisp1_min Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) inst_down_long_hemisp2_tp down_long_hemisp1_max inst_down_long_hemisp1_tp down_long_hemisp2_std down_short_diffuse_hemisp_std Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp1) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max) Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min) down_long_hemisp1_std inst_down_long_hemisp1_dome_temp short_direct_normal_std down_long_hemisp2_max down_long_hemisp2_min inst_down_long_hemisp2_dome_temp Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) inst_down_long_hemisp1_case_temp twpskyrad20sC2.a0: inst_diffuse inst_down_long_hemisp2_tp inst_direct_normal inst_down_long_hemisp1_tp inst_down_long_hemisp1_case_resist inst_down_long_hemisp2_case_resist inst_down_long_hemisp2_dome_resist inst_down_long_hemisp1_dome_resist

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DQRID : D111026.1

Start Date	Start Time	End Date	End Time
10/24/2011	0854	10/25/2011	0115

Subject:	TWP/SKYRAD/C2 - IRT power failure
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	The IRT measurements were incorrect due to a drop in the logger battery voltage.
Measurements:	twpskyrad60sC2.b1: IR Brightness Temperature(sky_ir_temp) sky_ir_temp_std sky_ir_temp_max sky_ir_temp_min twpskyrad20sC2.a0: inst_sky_ir_signal

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DQRID : D120606.5

Start Date	Start Time	End Date	End Time
01/12/2011	0143	01/28/2011	0600

Subject:	TWP/QCRAD/C2 - Downwelling LW too high
DataStreams:	twpqcrad1longC2.c1, twpqcrad1longC2.c2, twpqcrad1longC2.s1, twpqcrad1longC2.s2
Description:	Downwelling longwave irradiance was too high compared to another instrument, possibly due to a bad connection. Problem described in instrument DQR D110317.3:
Measurements:	twpqcrad1longC2.c2: Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) twpqcrad1longC2.c1: Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) twpqcrad1longC2.s1: Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) twpqcrad1longC2.s2: Irradiance, longwave, downwelling, hemispheric(down_long_hemisp)

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DQRID : D120607.3

Start Date	Start Time	End Date	End Time
09/01/1999	0000	11/01/1999	0000
05/26/2001	1200	06/18/2001	0400
06/25/2001	1800	08/16/2001	0400
12/01/2003	0000	01/01/2004	0000
12/17/2008	1942	12/21/2008	2215
03/25/2009	2000	05/18/2009	0442
06/16/2011	2335	08/15/2011	0130
10/06/2011	0000	12/31/2011	0000

Subject:	TWP/QCRAD/C2 - Tracker failure
DataStreams:	twpqcrad1longC2.c1, twpqcrad1longC2.c2, twpqcrad1longC2.s1, twpqcrad1longC2.s2
Description:	Tracker appears to be out of alignment or inoperative during these times. The short_direct_normal (NIP) and down_short_diffuse_hemisp (8-48) data appear to be bad and not recoverable. Several of these periods are documented in instrument DQRs: D110831.1, D090328.1, D081222.3, D040107.1, D011207.1, D011019.8
Measurements:	twpqcrad1longC2.c2: Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) twpqcrad1longC2.c1: Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp) twpqcrad1longC2.s1: Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_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) twpqcrad1longC2.s2: Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)

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DQRID : D120813.1

Start Date	Start Time	End Date	End Time
11/09/2011	0420	02/15/2012	0100
03/09/2012	2100	03/15/2012	2315

Subject:	TWP/SKYRAD/C2 - Downwelling LW #1 questionable
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	Hemispheric downwelling measurements on the hemisp1 were suspect due to the large differences between PIR1 and PIR2 (i.e. greater than 10W/m2). Maintenance on 3/14/2012 indicated problem with the connector and ops re-seated the connector on PIR 1. After the maintenance, PIR1 and PIR2 returned to tracking each other within 10W/m2 as typical.
Measurements:	twpskyrad60sC2.b1: down_long_hemisp1_max inst_down_long_hemisp1_tp down_long_hemisp1_std down_long_hemisp1_min inst_down_long_hemisp1_dome_temp Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp1) inst_down_long_hemisp1_case_temp twpskyrad20sC2.a0: inst_down_long_hemisp1_case_resist inst_down_long_hemisp1_dome_resist inst_down_long_hemisp1_tp

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DQRID : D121127.1

Start Date	Start Time	End Date	End Time
10/08/2011	0000	02/16/2012	2300

Subject:	TWP/SKYRAD/C2 - Tracker Failure
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	The solar tracker failed resulting in incorrect short_direct_normal and down_short_diffuse_hemisp data. Data are not recoverable.
Measurements:	twpskyrad60sC2.b1: Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_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) short_direct_normal_std Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) twpskyrad20sC2.a0: inst_direct_normal inst_diffuse

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DQRID : D121128.2

Start Date	Start Time	End Date	End Time
03/20/2012	0000	09/19/2012	0100

Subject:	TWP/SKYRAD/C2 - Tracker problem
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	The tracker has a problem in tracking the sun continuously in the southern hemisphere and close to the equator. This happened between the March equinox and September equinox around solar noon. Affected hours are between 00:00 to 1:00 each day for the specified time range. Note: This will likely occur again in 2013 between March equinox and September equinox around solar noon. Note2: The tracker tracking being off only affects data when there is direct sun, i.e. when the sun is not blocked by cloud. Thus in the tropics much of this data are not inherently "bad" plus only the direct and diffuse are "bad" when there's direct sun present. The QCRad has a test for "tracker off" that detects the tracker not shading the diffuse instrument and the NIP not being aimed at the sun when the sun is not blocked by cloud. Thus the ARM recommended measure QCRad data set will catch most of these "bad" data and set the values to "-9999.9" when the sun is not blocked by cloud, and leave the data that is OK when the sun is blocked by cloud (unless that data fails some other testing of course).
Measurements:	twpskyrad60sC2.b1: Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_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) short_direct_normal_std Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) twpskyrad20sC2.a0: inst_direct_normal inst_diffuse

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