DQRs for Session: 124942 User:sbensonCompleted: 12-23-2009

Data Quality Reports for Session: 124942 User: sbenson Completed: 12/23/2009

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D000608.1	TWP/SKYRAD/C2 - Probable window contamination	twpskyrad60sC2.a1, twpskyrad60sC2.b1
D010509.4	TWP/SKYRAD/C2 - PIR offline for B/W comparison	twpskyrad20sC2.a1, twpskyrad60sC2.a1, twpskyrad60sC2.b1
D011019.8	TWP/SKYRAD/C2 - Solar tracker failure	twpskyrad60sC2.a1, twpskyrad60sC2.b1
D011207.1	TWP/SKYRAD/C2 - Solar tracker failure	twpskyrad20sC2.a1, twpskyrad60sC2.a1, twpskyrad60sC2.b1
D020814.2	TWP/SKYRAD/C2 - Reprocess: PIR identified as unshaded is really shaded	twpskyrad60sC2.b1
D030821.5	TWP/SKYRAD/C2 - IRT incorrect min/delta values	twpskyrad60sC2.b1
D041026.2	TWP/SKYRAD/C2 - IRT bias	twpskyrad60sC2.b1
D050219.2	TWP/SKYRAD/C2 - IRT bias	twpskyrad60sC2.b1
D060804.1	TWP/SKYRAD/C2 - IRT signal loss	twpskyrad60sC2.b1
D061016.1	TWP/SKYRAD/C2 - IRT signal	twpskyrad60sC2.b1
D070206.1	TWP/SKYRAD/C2 - Short direct normal	twpskyrad20sC2.a0, twpskyrad60sC2.b1
D070404.2	TWP/SKYRAD/C2 - IRT measurement error	twpskyrad60sC2.b1
D071204.2	TWP/SKYRAD/C2 - Reprocessed: Incorrect calibrations	twpskyrad20sC2.a0, twpskyrad60sC2.b1
D080313.2	TWP/SKYRAD/C2 - Direct Normal reading too low	twpskyrad20sC2.a0, twpskyrad60sC2.b1, twpskyradC2.00
D081222.3	TWP/SKYRAD/C2 - Tracker failure	twpskyrad20sC2.a0, twpskyrad60sC2.b1
D090328.1	TWP/SKYRAD/C2 - Tracker inoperative	twpskyrad20sC2.a0, twpskyrad60sC2.b1
D090605.2	TWP/SKYRAD/C2 - Instrument grounding problem	twpskyrad20sC2.a0, twpskyrad60sC2.b1

DQRID : D000608.1

Start Date	Start Time	End Date	End Time
01/16/1999	0400	01/19/1999	0200
02/06/1999	2200	02/08/1999	0300
02/18/1999	2200	02/20/1999	2300
12/01/1999	0000	12/23/1999	2359

Subject:	TWP/SKYRAD/C2 - Probable window contamination
DataStreams:	twpskyrad60sC2.a1, twpskyrad60sC2.b1
Description:	On several occasions in early 1999, large (10 percent) differences between the global PSPs and the NIP were observed. In each case, the NIP reported low relative to the direct flux reported by the PSPs. These occurrences persisted for several days each time and were likely due to salt on one or more of the radiometers. There was a large discrepancy in the comparison of the PSPs and NIP during December (5-10 percent). This discrepancy got worse through the month and then suddenly improved after a rain event on December 23. There was likely salt deposited on the radiometer windows that was washed off in the rain. The observer daily rounds were being modified to include more regular cleaning of radiometers to address this issue.
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Down-welling unshaded pyranometer voltage(down_short_hemisp) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_hemisp_std) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) twpskyrad60sC2.a1: NIP maximum(nip_max) PSP shaded mean(psps_mean) PSP1 unshaded minimum(psp1_min) PSP shaded maximum(psps_max) PSP1 unshaded standard deviation(psp1_sd) NIP standard deviation(nip_sd) PSP1 unshaded maximum(psp1_max) NIP mean(nip_mean) PSP shaded standard deviation(psps_sd) NIP minimum(nip_min) PSP shaded minimum(psps_min) PSP1 unshaded mean(psp1_mean)

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DQRID : D010509.4

Start Date	Start Time	End Date	End Time
05/08/2001	2000	05/10/2001	0400

Subject:	TWP/SKYRAD/C2 - PIR offline for B/W comparison
DataStreams:	twpskyrad20sC2.a1, twpskyrad60sC2.a1, twpskyrad60sC2.b1
Description:	The shaded PIR was disconnected so a side by side comparison could be made with the shaded PSP and new shaded B/W PSP.
Measurements:	twpskyrad20sC2.a1: Instantaneous PIR2 dome thermistor(pir2_dome_therm) Instantaneous PIR2 case thermistor(pir2_case_therm) twpskyrad60sC2.b1: Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_case_temp) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_dome_temp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2(down_long_hemisp2) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Standard Deviation(down_long_hemisp2_std) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Maxima(down_long_hemisp2_max) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Minima(down_long_hemisp2_min) twpskyrad60sC2.a1: PIR shaded maximum(pirs_max) PIR shaded standard deviation(pirs_sd) PIR shaded minimum(pirs_min) PIR shaded mean(pirs_mean)

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DQRID : D011019.8

Start Date	Start Time	End Date	End Time
08/06/1999	1200	10/15/1999	1200

Subject:	TWP/SKYRAD/C2 - Solar tracker failure
DataStreams:	twpskyrad60sC2.a1, twpskyrad60sC2.b1
Description:	During Reset7 (8/6) the skytracker firmware was upgraded for Y2K. While still at the site, the mentor noted that the tracker was sticking and replaced it on 8/8/99. The replacement tracker also failed. Repeated attempts through 8/13 were not successful. After 8/13, the tracker was not operational. It was found that the problem was the result of bugs in the Y2K compliant version (2.44) of the firmware. On 10/14, Jeff Zirzow installed a new tracker with the Y2K non-compliant version (2.43) of the firmware. It was correctly assumed that the Y2K issues would only be apparent at the 19991231-20000101 time boundary. Exact times of changes are not known; noon GMT (midnight Local) was used to adequately window the time period of the changes.
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2(down_long_hemisp2) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Standard Deviation(down_long_hemisp2_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Maxima(down_long_hemisp2_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Minima(down_long_hemisp2_min) twpskyrad60sC2.a1: NIP maximum(nip_max) PSP shaded mean(psps_mean) PIR shaded maximum(pirs_max) PIR shaded standard deviation(pirs_sd) PIR shaded minimum(pirs_min) PSP shaded maximum(psps_max) NIP standard deviation(nip_sd) PIR shaded mean(pirs_mean) NIP mean(nip_mean) PSP shaded standard deviation(psps_sd) NIP minimum(nip_min) PSP shaded minimum(psps_min)

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DQRID : D011207.1

Start Date	Start Time	End Date	End Time
06/25/2001	0000	08/17/2001	2359
08/25/2001	0000	09/04/2001	2359
09/21/2001	0000	09/26/2001	2359

Subject:	TWP/SKYRAD/C2 - Solar tracker failure
DataStreams:	twpskyrad20sC2.a1, twpskyrad60sC2.a1, twpskyrad60sC2.b1
Description:	The solar tracker malfunctioned and did not track the sun reliably during the specified periods. PIR, PSP, and NIP data are suspect. The solar tracker may have operated satisfactorily during some periods within these time frames. Approximate verification on quality could be made by comparing the NIP data with the MFRSR data.
Measurements:	twpskyrad20sC2.a1: Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_dome_resist) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded Pyrgeometer(inst_down_long_shaded_case_resist) Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp) twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Standard Deviation(down_long_hemisp2_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Maxima(down_long_hemisp2_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2(down_long_hemisp2) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Minima(down_long_hemisp2_min) twpskyrad60sC2.a1: Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) 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 Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)

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DQRID : D020814.2

Start Date	Start Time	End Date	End Time
09/17/2001	0300	04/30/2002	2359

Subject:	TWP/SKYRAD/C2 - Reprocess: PIR identified as unshaded is really shaded
DataStreams:	twpskyrad60sC2.b1
Description:	On 17Sep01 the Global PIR was moved from the unshaded position on the Skyrad stand to the new 'shaded' spot on the new K&Z tracker. It is still using the same Logger channel as it did as an unshaded PIR even though it is now shaded.
Measurements:	twpskyrad60sC2.b1: Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2(down_long_hemisp2) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_case_temp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Standard Deviation(down_long_hemisp2_std) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_dome_temp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Maxima(down_long_hemisp2_max) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Minima(down_long_hemisp2_min)

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DQRID : D030821.5

Start Date	Start Time	End Date	End Time
04/01/2001	0005	03/03/2003	2102

Subject:	TWP/SKYRAD/C2 - IRT incorrect min/delta values
DataStreams:	twpskyrad60sC2.b1
Description:	For field sky_ir_temp, the value of valid_min was incorrectly assigned to -49.7 C and no value of valid_delta was assigned. The actual values should be -60 and 50 C, respectively.
Measurements:	twpskyrad60sC2.b1: Sky Infra Red Temperature Minima(sky_ir_temp_min) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Sky Infra-Red Temperature(sky_ir_temp)

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DQRID : D041026.2

Start Date	Start Time	End Date	End Time
10/13/2004	0600	10/18/2004	2300

Subject:	TWP/SKYRAD/C2 - IRT bias
DataStreams:	twpskyrad60sC2.b1
Description:	The IRT appears to be measuring higher sky temperatures than the AERI. There is no indication as to its cause or whether the IRT or the AERI is at fault. PRB note: because the AERI is calibrated between each sample, the AERI data has a high degree of confidence and the bias is likely on the part of the IRT.
Measurements:	twpskyrad60sC2.b1: Sky Infra Red Temperature Minima(sky_ir_temp_min) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Sky Infra-Red Temperature(sky_ir_temp)

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DQRID : D050219.2

Start Date	Start Time	End Date	End Time
02/07/2005	0454	04/17/2005	2023

Subject:	TWP/SKYRAD/C2 - IRT bias
DataStreams:	twpskyrad60sC2.b1
Description:	The IRT was measuring higher sky temperatures than AERI. The problem was corrected by changing the mirror.
Measurements:	twpskyrad60sC2.b1: Sky Infra Red Temperature Minima(sky_ir_temp_min) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Sky Infra-Red Temperature(sky_ir_temp) Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std)

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DQRID : D060804.1

Start Date	Start Time	End Date	End Time
07/19/2006	2239	07/24/2006	0727

Subject:	TWP/SKYRAD/C2 - IRT signal loss
DataStreams:	twpskyrad60sC2.b1
Description:	There was a significant drop in logger voltage that corresponds with a loss of the IR temperature. This was possibly due to a loose connection.
Measurements:	twpskyrad60sC2.b1: Sky Infra Red Temperature Minima(sky_ir_temp_min) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Sky Infra-Red Temperature(sky_ir_temp) Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std)

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DQRID : D061016.1

Start Date	Start Time	End Date	End Time
10/13/2006	0135	12/04/2006	2120

Subject:	TWP/SKYRAD/C2 - IRT signal
DataStreams:	twpskyrad60sC2.b1
Description:	The IRT exhibited a bias of the analog voltage output that caused problems with the signals from the other SKYRAD radiometers. The bias was due to corrosion between the power and signal connections in the IRT cable. The IRT was disconnected on 10/18/2006 at 01:20 and replaced on 11/6/2006 at 23:00 but it too appeared to have grounding problems due to internal corrosion and was disconnected on 11/11/2006 at 11:42 and then intermittently reconnected for testing. A second spare was installed on 12/4/2006 which did not cause problems with the signals from the other instruments.
Measurements:	twpskyrad60sC2.b1: Sky Infra Red Temperature Minima(sky_ir_temp_min) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Sky Infra-Red Temperature(sky_ir_temp) Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std)

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DQRID : D070206.1

Start Date	Start Time	End Date	End Time
01/31/2007	0223	02/10/2007	0055

Subject:	TWP/SKYRAD/C2 - Short direct normal
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	The short_direct_normal (NIP) data are missing or incorrect due to instrument cable failure. The cable was replaced. The short_direct_normal can be calculated using the following relationship for shortwave radiometers: global hemispheric = diffuse hemispheric + direct normal *cos (zenith angle)
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) twpskyrad20sC2.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal)

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DQRID : D070404.2

Start Date	Start Time	End Date	End Time
12/04/2006	2120	02/22/2007	0125

Subject:	TWP/SKYRAD/C2 - IRT measurement error
DataStreams:	twpskyrad60sC2.b1
Description:	The IRT was not properly calibrated and was not able to measure sky temperatures below 273.2 K. (This instrument was the same one damaged by lightning in November 2005 in Darwin. It was returned for repair and received a new lens but was calibrated only down to 0 deg C, so the problem was neither detected nor repaired.) The IRT was replaced on 2/22/2007.
Measurements:	twpskyrad60sC2.b1: Sky Infra Red Temperature Minima(sky_ir_temp_min) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Sky Infra-Red Temperature(sky_ir_temp) Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std)

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DQRID : D071204.2

Start Date	Start Time	End Date	End Time
11/25/2007	2220	11/30/2007	1726

Subject:	TWP/SKYRAD/C2 - Reprocessed: Incorrect calibrations
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	The SKYRAD PSPs were changed out 11/25 but the datalogger program was not updated until 11/30. Reprocessed to correct calibration per: down_short_diffuse(corrected) = down_short_diffuse(orig) * (118.18/112.42) short_direct_normal(corrected)= short_direct_normal(orig) * (122.20/118.11) down_short_hemips(corrected) = down_short_hemisp(orig) * (133.16/137.57) Reprocessing completed March 2008.
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Down-welling unshaded pyranometer voltage(down_short_hemisp) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_hemisp_std) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) twpskyrad20sC2.a0: Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal)

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DQRID : D080313.2

Start Date	Start Time	End Date	End Time
03/02/2008	2230	03/10/2008	2130

Subject:	TWP/SKYRAD/C2 - Direct Normal reading too low
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1, twpskyradC2.00
Description:	The NIP (direct_normal shortwave irradiance) measurement was reading too low during this time period. No TWP Ops documentation could be found to determine the cause but data review indicate that the NIP appeared to be reading low by about 25W/m2 during this period. The NIP data had well defined steps in irradiance when compared to three component checks indicating the problem period.
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) twpskyrad20sC2.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal) twpskyradC2.00: null(Raw data stream - documentation not supported)

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DQRID : D081222.3

Start Date	Start Time	End Date	End Time
12/17/2008	1942	12/21/2008	2215

Subject:	TWP/SKYRAD/C2 - Tracker failure
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	Tracker failed to wake up on 12/17. Ops reset tracker on 12/21. The affected instruments are the 8-48 (down_short_diffuse) and NIP (direct_normal) shortwave instruments.
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) 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 Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) twpskyrad20sC2.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse)

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DQRID : D090328.1

Start Date	Start Time	End Date	End Time
03/25/2009	2000	05/18/2009	0442

Subject:	TWP/SKYRAD/C2 - Tracker inoperative
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	The tracker failed in park position. Tracker was replaced 5/14 but did not resume fully normal operation until 5/18. The down_short_diffuse and short_direct_normal data are directly affected by this failure. These data are not recoverable.
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) 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 Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) twpskyrad20sC2.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse)

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DQRID : D090605.2

Start Date	Start Time	End Date	End Time
05/21/2009	1855	05/25/2009	2100

Subject:	TWP/SKYRAD/C2 - Instrument grounding problem
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	During this time period the IRT analog output line appears to have adversely affected the skyrad datalogger grounding. This resulted in intermittent anomalous readings across all skyrad datalogger channels including logger voltage.
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Standard Deviation(down_long_hemisp1_std) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_dome_temp) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Sky Infra Red Temperature Minima(sky_ir_temp_min) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer1(inst_down_long_hemisp1_case_temp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Standard Deviation(down_long_hemisp2_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Maxima(down_long_hemisp1_max) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Maxima(down_long_hemisp2_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer1(inst_down_long_hemisp1_tp) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Sky Infra-Red Temperature(sky_ir_temp) Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_case_temp) Down-welling unshaded pyranometer voltage(down_short_hemisp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1(down_long_hemisp1) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_hemisp_std) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2(down_long_hemisp2) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Minima(down_long_hemisp1_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer1(inst_down_long_hemisp1_dome_temp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Minima(down_long_hemisp2_min) twpskyrad20sC2.a0: Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer2(inst_down_long_hemisp2_dome_resist) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer1(inst_down_long_hemisp1_case_resist) Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer1(inst_down_long_hemisp1_tp) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer2(inst_down_long_hemisp2_case_resist) Instantaneous Sky/Cloud Infrared(inst_sky_ir_signal) Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer1(inst_down_long_hemisp1_dome_resist) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp)

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