DQRs for Session: 108895 User:jberingeCompleted: 11-14-2007

Data Quality Reports for Session: 108895 User: jberinge Completed: 11/14/2007

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D040416.1	TWP/GNDRAD/C3 - IRT bias	twpgndrad60sC3.b1
D050210.1	TWP/SMET/C3 - Data non-representative	twpsmet60sC3.b1
D050418.2	TWP/SMET/C3 - Instrument logger problem, Sensor failure	twpsmet60sC3.b1
D050808.3	TWP/SMET/C3 - Data not representative	twpsmet60sC3.b1
D050831.4	TWP/SMET/C3 - Towrr lowered for sensor comparisons, data not representative	twpsmet60sC3.b1
D050919.4	TWP/GNDRAD/C3 - Tower inverted for instrument testing and replacement	twpgndrad60sC3.b1
D051114.3	TWP/SKYRAD/C3 - tracker inoperative	twpskyrad20sC3.a0, twpskyrad60sC3.b1, twpskyradC3.00
D051115.1	TWP/SMET/C3 - Upper wind sensor failure	twpsmet60sC3.b1
D051117.2	TWP/SMET/C3 - RH Values Artificially High	twpsmet60sC3.b1
D051117.3	TWP/SMET/C3 - Instrument failure	twpsmet60sC3.b1
D051202.3	TWP/SKYRAD/C3 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2 downwelling longwave	twpskyrad60sC3.b1
D051206.5	TWP/GNDRAD/C3 - IRT malfunction	twpgndrad60sC3.b1
D060110.3	TWP/SKYRAD/C3 - IRT damaged	twpskyrad20sC3.a0, twpskyrad60sC3.b1
D060111.1	TWP/GNDRAD/C3 - IRT power	twpgndrad60sC3.b1
D060217.1	TWP/SKYRAD/C3 - Tracker stopped	twpskyrad60sC3.b1
D060223.7	TWP/SKYRAD/C3 - Solar Tracker locking at solar noon	twpskyrad20sC3.a0, twpskyrad20sC3.a1, twpskyrad60sC3.b1, twpskyradC3.00
D060426.8	TWP/SMET/C3 - ORG data noisy due to degraded ground	twpsmet60sC3.b1
D060502.3	TWP/SMET/C3 - Reprocess: Windspeed2 calibration error	twpsmet60sC3.b1
D060509.1	TWP/GNDRAD/C3 - IRT failed	twpgndrad60sC3.b1
D060627.1	TWP/SMET/C3 - Anemometer Readings Incorrect	twpsmet60sC3.b1
D060630.33	TWP/SKYRAD/C3 - Reprocess: Longwave Calibration error	twpskyrad60sC3.b1
D060630.36	TWP/GNDRAD/C3 - Reprocess: Longwave Calibration error	twpgndrad60sC3.b1
D060818.3	TWP/SMET/C3 - Reprocess: Barometric Data Changed from hPa to kPa	twpsmet60sC3.b1
D060823.1	TWP/GNDRAD/C3 - IRT bias	twpgndrad60sC3.b1
D061011.4	TWP/SMET/C3 - Reprocess: Tipping bucket rain gauge added	twpsmet60sC3.b1
D061120.1	TWP/SKYRAD/C3 - NIP Failure	twpskyrad20sC3.a0, twpskyrad60sC3.b1
D061214.1	TWP/SKYRAD/C3 - NIP instrument failure	twpskyrad20sC3.a0, twpskyrad60sC3.b1, twpskyradC3.00
D070306.2	TWP/SMET/C3 - Barometer Data Incorrect	twpsmet60sC3.b1
D070306.3	TWP/SMET/C3 - Data Incorrect Due to Water Intrusion	twpsmet60sC3.b1
D070803.1	TWP/SMET/C3 - Upper wind speed artificially slow	twpsmet60sC3.b1
D071001.4	TWP/GNDRAD/C3 - Maintenance activities affected GNDRAD	twpgndrad20sC3.a0, twpgndrad60sC3.b1

DQRID : D040416.1

Start Date	Start Time	End Date	End Time
04/07/2004	0230	04/08/2004	1200
04/12/2004	0600	04/27/2004	1400
05/08/2004	0300	05/15/2004	2200
05/27/2004	1100	06/09/2004	0000
12/29/2004	1100	01/06/2005	2300

Subject:	TWP/GNDRAD/C3 - IRT bias
DataStreams:	twpgndrad60sC3.b1
Description:	The IRT behaved erratically, jumping frequently from reporting about 50 Wm^(-2) higher than the PIR for surface irradiance values to about 100Wm^(-2) lower than the PIR. Generally, the IRT measured lower surface temperatures than expected from the PIR.
Measurements:	twpgndrad60sC3.b1: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

Back To Table of Contents

DQRID : D050210.1

Start Date	Start Time	End Date	End Time
02/09/2005	2310	02/09/2005	2320

Subject:	TWP/SMET/C3 - Data non-representative
DataStreams:	twpsmet60sC3.b1
Description:	Tower mast was lowered for inspection. Data during this time is non-representative.
Measurements:	twpsmet60sC3.b1: Precipitation maximum(precip_max) Wind #2 speed arithmetic average(wind2_spd_arith_avg) Wind #1 speed minimum(wind1_spd_min) Wind #2 speed maximum(wind2_spd_max) precipitation minimum(precip_min) Wind #1 direction standard deviation(wind1_dir_sd) Mean Air Temperature or Hardware Error(temp_mean) Wind #1 speed maximum(wind1_spd_max) Wind #2 speed minimum(wind2_spd_min) Temperature maximum(temp_max) Vapor pressure mean(vappress_mean) Barometric Pressure(atmos_pressure) Vapor pressure standard deviation(vappress_sd) Mean Relative Humidity(relh_mean) Relative humidity maximum(relh_max) Wind #1 direction vector average(wind1_dir_vec_avg) Wind #1 speed standard deviation(wind1_spd_sd) Wind #1 speed vector average(wind1_spd_vec_avg) Wind #2 direction vector average(wind2_dir_vec_avg) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Relative humidity minimum(relh_min) Precipitation mean(precip_mean) Wind #2 speed vector average(wind2_spd_vec_avg) Temperature minimum(temp_min) Wind #2 speed maximum gust(wind2_spd_max_gust) Precipitation standard deviation(precip_sd) Wind #1 speed maximum gust(wind1_spd_max_gust) Wind #1 speed arithmetic average(wind1_spd_arith_avg) Wind #2 direction standard deviation(wind2_dir_sd) Wind #2 speed standard deviation(wind2_spd_sd) Std Dev of Air Temperature(temp_sd)

Back To Table of Contents

DQRID : D050418.2

Start Date	Start Time	End Date	End Time
04/14/2005	0230	04/19/2005	0050

Subject:	TWP/SMET/C3 - Instrument logger problem, Sensor failure
DataStreams:	twpsmet60sC3.b1
Description:	The wind_lower direction sensor failed on 4/14 and disagrees significantly with the wind_upper direction. The wind_lower sensor reports a constant value around 0-15 degrees since it failed. Testing showed that excitation channel two on the logger was the problem. Logger was replaced by spare.
Measurements:	twpsmet60sC3.b1: Wind #2 direction standard deviation(wind2_dir_sd) Wind #2 direction vector average(wind2_dir_vec_avg)

Back To Table of Contents

DQRID : D050808.3

Start Date	Start Time	End Date	End Time
08/05/2005	0030	08/05/2005	0330

Subject:	TWP/SMET/C3 - Data not representative
DataStreams:	twpsmet60sC3.b1
Description:	Tower was lowered for radiometer change and characterization. Wind, temp and RH data not representative of local conditions.
Measurements:	twpsmet60sC3.b1: Wind #2 speed arithmetic average(wind2_spd_arith_avg) Wind #1 speed minimum(wind1_spd_min) Wind #2 speed maximum(wind2_spd_max) Wind #1 direction standard deviation(wind1_dir_sd) Mean Air Temperature or Hardware Error(temp_mean) Wind #1 speed maximum(wind1_spd_max) Wind #2 speed minimum(wind2_spd_min) Temperature maximum(temp_max) Vapor pressure mean(vappress_mean) Vapor pressure standard deviation(vappress_sd) Mean Relative Humidity(relh_mean) Relative humidity maximum(relh_max) Wind #1 direction vector average(wind1_dir_vec_avg) Wind #1 speed standard deviation(wind1_spd_sd) Wind #1 speed vector average(wind1_spd_vec_avg) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Wind #2 direction vector average(wind2_dir_vec_avg) Relative humidity minimum(relh_min) Wind #2 speed vector average(wind2_spd_vec_avg) Temperature minimum(temp_min) Wind #2 speed maximum gust(wind2_spd_max_gust) Wind #1 speed maximum gust(wind1_spd_max_gust) Wind #2 speed standard deviation(wind2_spd_sd) Wind #2 direction standard deviation(wind2_dir_sd) Wind #1 speed arithmetic average(wind1_spd_arith_avg) Std Dev of Air Temperature(temp_sd)

Back To Table of Contents

DQRID : D050831.4

Start Date	Start Time	End Date	End Time
08/05/2005	0030	08/05/2005	0330

Subject:	TWP/SMET/C3 - Towrr lowered for sensor comparisons, data not representative
DataStreams:	twpsmet60sC3.b1
Description:	The tower was lowered for radiometer change and comparisons. During the time period the data listed was not representative.
Measurements:	twpsmet60sC3.b1: Wind #2 speed arithmetic average(wind2_spd_arith_avg) Wind #1 speed minimum(wind1_spd_min) Wind #2 speed maximum(wind2_spd_max) Wind #1 direction standard deviation(wind1_dir_sd) Mean Air Temperature or Hardware Error(temp_mean) Wind #1 speed maximum(wind1_spd_max) Wind #2 speed minimum(wind2_spd_min) Temperature maximum(temp_max) Vapor pressure mean(vappress_mean) Vapor pressure standard deviation(vappress_sd) Mean Relative Humidity(relh_mean) Relative humidity maximum(relh_max) Wind #1 direction vector average(wind1_dir_vec_avg) Wind #1 speed standard deviation(wind1_spd_sd) Wind #1 speed vector average(wind1_spd_vec_avg) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Wind #2 direction vector average(wind2_dir_vec_avg) Relative humidity minimum(relh_min) Wind #2 speed vector average(wind2_spd_vec_avg) Temperature minimum(temp_min) Wind #2 speed maximum gust(wind2_spd_max_gust) Wind #1 speed maximum gust(wind1_spd_max_gust) Wind #2 speed standard deviation(wind2_spd_sd) Wind #2 direction standard deviation(wind2_dir_sd) Wind #1 speed arithmetic average(wind1_spd_arith_avg) Std Dev of Air Temperature(temp_sd)

Back To Table of Contents

DQRID : D050919.4

Start Date	Start Time	End Date	End Time
08/05/2005	0030	08/05/2005	0200
08/09/2005	0000	08/09/2005	0200

Subject:	TWP/GNDRAD/C3 - Tower inverted for instrument testing and replacement
DataStreams:	twpgndrad60sC3.b1
Description:	The tower at Darwin was brought down to test and replace the Gndrad PIR on 8/5/2005 and the PSP on 8/9/2005
Measurements:	twpgndrad60sC3.b1: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(up_short_hemisp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard Deviation(up_long_hemisp_std) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

Back To Table of Contents

DQRID : D051114.3

Start Date	Start Time	End Date	End Time
11/14/2005	0453	12/02/2005	0000

Subject:	TWP/SKYRAD/C3 - tracker inoperative
DataStreams:	twpskyrad20sC3.a0, twpskyrad60sC3.b1, twpskyradC3.00
Description:	A lightning strike at Darwin removed the tracker from service. Instruments installed on the tracker were rendered either inoperative or were not shaded during this time period. The longwave hemispheric instruments PIR1 and PIR2 appear to have been unaffected. They are not suseptable to incorrect tracker operation. The downwelling hemispheric shortwave PSP instrument mounted on Skyrad will not be affected by incorrect tracker operation.
Measurements:	twpskyradC3.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) twpskyrad60sC3.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) twpskyrad20sC3.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse)

Back To Table of Contents

DQRID : D051115.1

Start Date	Start Time	End Date	End Time
11/14/2005	0453	11/15/2005	2215

Subject:	TWP/SMET/C3 - Upper wind sensor failure
DataStreams:	twpsmet60sC3.b1
Description:	A lightning strike destroyed the upper (#1) wind sensor.
Measurements:	twpsmet60sC3.b1: Wind #1 direction vector average(wind1_dir_vec_avg) Wind #1 speed minimum(wind1_spd_min) Wind #1 speed maximum(wind1_spd_max) Wind #1 speed standard deviation(wind1_spd_sd) Wind #1 speed maximum gust(wind1_spd_max_gust) Wind #1 speed arithmetic average(wind1_spd_arith_avg) Wind #1 speed vector average(wind1_spd_vec_avg) Wind #1 direction standard deviation(wind1_dir_sd)

Back To Table of Contents

DQRID : D051117.2

Start Date	Start Time	End Date	End Time
11/14/2005	0453	11/15/2005	0050

Subject:	TWP/SMET/C3 - RH Values Artificially High
DataStreams:	twpsmet60sC3.b1
Description:	Lightning strike caused RH readings to be higher than reasonable (130%).
Measurements:	twpsmet60sC3.b1: Vapor pressure standard deviation(vappress_sd) Mean Relative Humidity(relh_mean) Relative humidity maximum(relh_max) Vapor pressure mean(vappress_mean) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Relative humidity minimum(relh_min)

Back To Table of Contents

DQRID : D051117.3

Start Date	Start Time	End Date	End Time
11/14/2005	0453	11/23/2005	0000

Subject:	TWP/SMET/C3 - Instrument failure
DataStreams:	twpsmet60sC3.b1
Description:	A lightning strike caused a failure in the ORG. Rainfall was being continually recorded.
Measurements:	twpsmet60sC3.b1: Precipitation mean(precip_mean) Precipitation maximum(precip_max) Precipitation standard deviation(precip_sd) precipitation minimum(precip_min)

Back To Table of Contents

DQRID : D051202.3

Start Date	Start Time	End Date	End Time
05/21/2004	0000	09/09/2005	2012

Subject:	TWP/SKYRAD/C3 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2 downwelling longwave
DataStreams:	twpskyrad60sC3.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 temperature dependent irradiance corrections as 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. Irradiance 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:	twpskyrad60sC3.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard Deviation(down_long_hemisp_shaded2_std) 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 Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)

Back To Table of Contents

DQRID : D051206.5

Start Date	Start Time	End Date	End Time
11/21/2005	1500	12/05/2005	0100

Subject:	TWP/GNDRAD/C3 - IRT malfunction
DataStreams:	twpgndrad60sC3.b1
Description:	The internal IRT power supply failed (probably due to a lightning strike on 11/14) and was drawing excessive current on the data logger's DC system. The problem was corrected by replacing the instrument with a spare.
Measurements:	twpgndrad60sC3.b1: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

Back To Table of Contents

DQRID : D060110.3

Start Date	Start Time	End Date	End Time
11/13/2005	2314	03/07/2006	0257

Subject:	TWP/SKYRAD/C3 - IRT damaged
DataStreams:	twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:	The analog output of the IRT was damaged by a lightning strike. The problem was corrected by replacing the instrument with a spare. The damaged IRT was returned to the vendor for repair.
Measurements:	twpskyrad60sC3.b1: Sky Infra Red Temperature Minima(sky_ir_temp_min) Sky Infra-Red Temperature(sky_ir_temp) Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std) twpskyrad20sC3.a0: Instantaneous Sky/Cloud Infrared(inst_sky_ir_signal)

Back To Table of Contents

DQRID : D060111.1

Start Date	Start Time	End Date	End Time
12/20/2005	2330	01/02/2006	2300

Subject:	TWP/GNDRAD/C3 - IRT power
DataStreams:	twpgndrad60sC3.b1
Description:	The IRT failed to report after a planned power outage to add lightning protection modules to the AC power wiring. The problem was corrected when a loose power connection to the logger was found, rectified, and power restored to the logger.
Measurements:	twpgndrad60sC3.b1: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

Back To Table of Contents

DQRID : D060217.1

Start Date	Start Time	End Date	End Time
02/16/2006	0330	02/16/2006	0505

Subject:	TWP/SKYRAD/C3 - Tracker stopped
DataStreams:	twpskyrad60sC3.b1
Description:	Solar Tracker stopped and had to be repowered
Measurements:	twpskyrad60sC3.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Maxima(down_long_hemisp_unshaded_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard Deviation(down_long_hemisp_shaded1_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Standard Deviation(down_long_hemisp_unshaded_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1) Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard Deviation(down_long_hemisp_shaded2_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max) Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min) Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Minima(down_long_hemisp_unshaded_min)

Back To Table of Contents

DQRID : D060223.7

Start Date	Start Time	End Date	End Time
02/17/2006	0000	03/10/2006	0411

Subject:	TWP/SKYRAD/C3 - Solar Tracker locking at solar noon
DataStreams:	twpskyrad20sC3.a0, twpskyrad20sC3.a1, twpskyrad60sC3.b1, twpskyradC3.00
Description:	The Scitech solar tracker from SGP that was installed on 2005-12-01 after the previous tracker was damaged by lightning on 2005-11-14 has been hanging up every day at solar noon. In Feb, the sun moved from south to north and the Scitech tracker does not seem to be able to deal with this. During this period the operators power cycled the tracker between 05:00Z and 10:00Z almost every day and data from around solar noon (03:30Z) until the power cycle are unusable for the measurements that use the tracker (NIP, B&W Diffuse, and shaded PIRs). The problem was corrected when the Scitech tracker was replaced by a Brusag tracker on 2006-03-10.
Measurements:	twpskyradC3.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) twpskyrad60sC3.b1: Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Down-welling unshaded pyranometer voltage(down_short_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_hemisp_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard Deviation(down_long_hemisp_shaded2_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard Deviation(down_long_hemisp_shaded_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min) 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, Maxima(short_direct_normal_max) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard Deviation(down_long_hemisp_shaded1_std) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max) twpskyrad20sC3.a0: Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp) Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded Pyrgeometer1(inst_down_long_shaded1_dome_resist) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded Pyrgeometer2(inst_down_long_shaded2_case_resist) Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded Pyrgeometer2(inst_down_long_shaded2_dome_resist) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded Pyrgeometer1(inst_down_long_shaded1_case_resist) Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp) twpskyrad20sC3.a1: Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded Pyrgeometer1(inst_down_long_shaded1_case_resist) Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded Pyrgeometer1(inst_down_long_shaded1_dome_resist) Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp) 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 Dome Thermistor Resistance, Shaded Pyrgeometer2(inst_down_long_shaded2_dome_resist) Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded Pyrgeometer2(inst_down_long_shaded2_case_resist) Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp)

Back To Table of Contents

DQRID : D060426.8

Start Date	Start Time	End Date	End Time
12/01/2005	0000	08/24/2006	2359

Subject:	TWP/SMET/C3 - ORG data noisy due to degraded ground
DataStreams:	twpsmet60sC3.b1
Description:	SMET Rain Data began to be noisy during December 2005 and the problem slowly became worse over time so that in February 2006 the ORG was reporting with a constant background value of around 0.10 mm/hr rain rate. ORG voltage showed a near constant value above the 85mV threshold. The ground for the ORG had become degraded and was lost due to corrosion.
Measurements:	twpsmet60sC3.b1: Precipitation mean(precip_mean) Precipitation maximum(precip_max) Precipitation standard deviation(precip_sd) precipitation minimum(precip_min)

Back To Table of Contents

DQRID : D060502.3

Start Date	Start Time	End Date	End Time
04/27/2006	2330	05/02/2006	0201

Subject:	TWP/SMET/C3 - Reprocess: Windspeed2 calibration error
DataStreams:	twpsmet60sC3.b1
Description:	The lower anemometer was replaced afer being removed in anticipation of cyclone Monica. The calibration coefficient was not changed during this period so the wind speeds are a little low (0.2%).
Measurements:	twpsmet60sC3.b1: Wind #2 speed vector average(wind2_spd_vec_avg) Wind #2 speed arithmetic average(wind2_spd_arith_avg) Wind #2 speed maximum gust(wind2_spd_max_gust) Wind #2 speed minimum(wind2_spd_min) Wind #2 speed maximum(wind2_spd_max) Wind #2 speed standard deviation(wind2_spd_sd)

Back To Table of Contents

DQRID : D060509.1

Start Date	Start Time	End Date	End Time
04/07/2006	0000	05/18/2006	2359

Subject:	TWP/GNDRAD/C3 - IRT failed
DataStreams:	twpgndrad60sC3.b1
Description:	The IRT began to fail on 4/7/2006 and failed completely (apparently due to the internal power supply) on 4/27. It was replaced on 5/18.
Measurements:	twpgndrad60sC3.b1: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

Back To Table of Contents

DQRID : D060627.1

Start Date	Start Time	End Date	End Time
06/27/2006	0115	06/27/2006	0344

Subject:	TWP/SMET/C3 - Anemometer Readings Incorrect
DataStreams:	twpsmet60sC3.b1
Description:	The Anemometer readings were incorrect due to the tower being lowered for maintenance.
Measurements:	twpsmet60sC3.b1: Wind #2 speed arithmetic average(wind2_spd_arith_avg) Wind #1 speed minimum(wind1_spd_min) Wind #1 direction vector average(wind1_dir_vec_avg) Wind #1 speed standard deviation(wind1_spd_sd) Wind #2 speed maximum(wind2_spd_max) Wind #1 speed vector average(wind1_spd_vec_avg) Wind #2 direction vector average(wind2_dir_vec_avg) Wind #1 direction standard deviation(wind1_dir_sd) Wind #2 speed vector average(wind2_spd_vec_avg) Wind #2 speed maximum gust(wind2_spd_max_gust) Wind #1 speed maximum(wind1_spd_max) Wind #2 speed minimum(wind2_spd_min) Wind #1 speed maximum gust(wind1_spd_max_gust) Wind #1 speed arithmetic average(wind1_spd_arith_avg) Wind #2 direction standard deviation(wind2_dir_sd) Wind #2 speed standard deviation(wind2_spd_sd)

Back To Table of Contents

DQRID : D060630.33

Start Date	Start Time	End Date	End Time
05/20/2004	2200	12/21/2005	2136

Subject:	TWP/SKYRAD/C3 - Reprocess: Longwave Calibration error
DataStreams:	twpskyrad60sC3.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:	twpskyrad60sC3.b1: Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2) Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)

Back To Table of Contents

DQRID : D060630.36

Start Date	Start Time	End Date	End Time
05/20/2004	0100	12/21/2005	2137

Subject:	TWP/GNDRAD/C3 - Reprocess: Longwave Calibration error
DataStreams:	twpgndrad60sC3.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:	twpgndrad60sC3.b1: Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)

Back To Table of Contents

DQRID : D060818.3

Start Date	Start Time	End Date	End Time
12/02/2003	0000	07/13/2006	2219

Subject:	TWP/SMET/C3 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:	twpsmet60sC3.b1
Description:	Barometric pressure data was converted from hPa to kPa in order to standardize the measurement units among ARM sites and to conform to accepted standard units determined by the scientific community.
Measurements:	twpsmet60sC3.b1: Barometric Pressure(atmos_pressure)

Back To Table of Contents

DQRID : D060823.1

Start Date	Start Time	End Date	End Time
05/19/2006	0000	06/27/2006	0344

Subject:	TWP/GNDRAD/C3 - IRT bias
DataStreams:	twpgndrad60sC3.b1
Description:	The IRT reported higher surface temperatures than the PIR due to corrosion on the terminals of the lightning protection module and a ground wire error. The corrosion was cleaned and the wiring corrected.
Measurements:	twpgndrad60sC3.b1: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

Back To Table of Contents

DQRID : D061011.4

Start Date	Start Time	End Date	End Time
03/12/2002	0000	09/26/2006	1435

Subject:	TWP/SMET/C3 - Reprocess: Tipping bucket rain gauge added
DataStreams:	twpsmet60sC3.b1
Description:	A tipping bucket rain gauge was added to the SMET suite of instruments effective 20060926. Two new variables (count and rain amount) were added at the end of the twpsmet60sC1.b1 datastream. When reprocessing of this datastream occurs these variables will be added with -9999 (missing) as the value for dates prior to gauge installation.
Measurements:	twpsmet60sC3.b1: base time(base_time)

Back To Table of Contents

DQRID : D061120.1

Start Date	Start Time	End Date	End Time
11/16/2006	2006	11/20/2006	0630

Subject:	TWP/SKYRAD/C3 - NIP Failure
DataStreams:	twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:	Skyrad normal incident shortwave irradiance (NIP) started reporting impossible values for direct normal irradiance starting 16 November approx 2100GMT corresponding to a rain event at the same time. The NIP was replaced fixing the problem. Direct normal data are not recoverable. However, the NIP data can be calculated from the global hemsipherical shortwave and global hemispherical diffuse datastreams by using the following relationship: Global Horizontal = Direct Normal x cos(Z) + Diffuse Horizontal where Z is the zenith angle.
Measurements:	twpskyrad60sC3.b1: 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) Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) twpskyrad20sC3.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal)

Back To Table of Contents

DQRID : D061214.1

Start Date	Start Time	End Date	End Time
12/13/2006	0342	01/16/2007	0440

Subject:	TWP/SKYRAD/C3 - NIP instrument failure
DataStreams:	twpskyrad20sC3.a0, twpskyrad60sC3.b1, twpskyradC3.00
Description:	The NIP (Short Direct Normal) was replaced after it displayed symptoms of failure associated with either unknown precipitation related issues or a possible lightning strike. NIP data are not recoverable. Direct normal data can be reconstructed from global hemispheric and global diffuse data using the following relationship: global hemispheric = direct*cos(sza) + diffuse hemispheric
Measurements:	twpskyradC3.00: Raw data stream - documentation not supported(Raw data stream - documentation not supported) twpskyrad60sC3.b1: 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) Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) twpskyrad20sC3.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal)

Back To Table of Contents

DQRID : D070306.2

Start Date	Start Time	End Date	End Time
03/02/2007	1723	03/03/2007	1228

Subject:	TWP/SMET/C3 - Barometer Data Incorrect
DataStreams:	twpsmet60sC3.b1
Description:	The barometer data was incorrect or missing due to water intrusion.
Measurements:	twpsmet60sC3.b1: Barometric Pressure(atmos_pressure)

Back To Table of Contents

DQRID : D070306.3

Start Date	Start Time	End Date	End Time
03/03/2007	0056	03/03/2007	0123

Subject:	TWP/SMET/C3 - Data Incorrect Due to Water Intrusion
DataStreams:	twpsmet60sC3.b1
Description:	Data became erratic and unreasonable after water intrusion into the enclosure.
Measurements:	twpsmet60sC3.b1: Vapor pressure standard deviation(vappress_sd) Precipitation maximum(precip_max) Relative humidity maximum(relh_max) Mean Relative Humidity(relh_mean) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Relative humidity minimum(relh_min) precipitation minimum(precip_min) Precipitation mean(precip_mean) Temperature minimum(temp_min) Mean Air Temperature or Hardware Error(temp_mean) Temperature maximum(temp_max) Precipitation standard deviation(precip_sd) Vapor pressure mean(vappress_mean) Std Dev of Air Temperature(temp_sd)

Back To Table of Contents

DQRID : D070803.1

Start Date	Start Time	End Date	End Time
07/01/2007	0000	09/18/2007	2315

Subject:	TWP/SMET/C3 - Upper wind speed artificially slow
DataStreams:	twpsmet60sC3.b1
Description:	The upper wind measurement was consistently slower by around 0.5 - 1 m/s than the lower wind measurement. The bearings on the upper wind measurement were binding.
Measurements:	twpsmet60sC3.b1: Wind #1 speed minimum(wind1_spd_min) Wind #1 speed maximum(wind1_spd_max) Wind #1 speed standard deviation(wind1_spd_sd) Wind #1 speed maximum gust(wind1_spd_max_gust) Wind #1 speed vector average(wind1_spd_vec_avg)

Back To Table of Contents

DQRID : D071001.4

Start Date	Start Time	End Date	End Time
09/17/2007	2330	09/18/2007	0722
09/18/2007	2320	09/19/2007	0150
09/19/2007	2333	09/20/2007	0055

Subject:	TWP/GNDRAD/C3 - Maintenance activities affected GNDRAD
DataStreams:	twpgndrad20sC3.a0, twpgndrad60sC3.b1
Description:	While maintenance was performed on the SMET anenometer, the GNDRAD instruments were inverted. Disregard GNDRAD data during this time.
Measurements:	twpgndrad20sC3.a0: Time offset of tweaks from base_time(time_offset) Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance Pyrgeometer(inst_up_long_case_resist) Instantaneous Surface Infra-Red Signal(inst_sfc_ir_signal) Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp) time(time) base time(base_time) Dummy altitude for Zeb(alt) Instantaneous Upwelling Pygeometer Thermopile Voltage(inst_up_long_hemisp_tp) lat(lat) lon(lon) Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance Pyrgeometer(inst_up_long_dome_resist) twpgndrad60sC3.b1: Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(up_short_hemisp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp) Net Radiation, Standard Deviation(net_std) Net Radiation, Maxima(net_max) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) lat(lat) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) External voltage(external_voltage) Effective Surface (Skin) Temperature(sfc_ir_temp) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max) Logger panel temperature(logger_temp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max) Net Radiation, Minima(net_min) lon(lon) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard Deviation(up_long_hemisp_std) base time(base_time) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp) Time offset of tweaks from base_time(time_offset) Battery Voltage(internal_voltage) Bit data. See details.(bit_data) Net Radiation(net) Dummy altitude for Zeb(alt)

Back To Table of Contents

END OF DATA