Data Quality Reports for Session: 101503 User: jberinge Completed: 09/11/2006


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050808.3TWP/SMET/C3 - Data not representativetwpsmet60sC3.b1
D050831.4TWP/SMET/C3 - Towrr lowered for sensor comparisons, data not representativetwpsmet60sC3.b1
D050919.4TWP/GNDRAD/C3 - Tower inverted for instrument testing and replacementtwpgndrad60sC3.b1
D051114.3TWP/SKYRAD/C3 - tracker inoperativetwpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1
D051115.1TWP/SMET/C3 - Upper wind sensor failuretwpsmet60sC3.b1
D051117.2TWP/SMET/C3 - RH Values Artificially Hightwpsmet60sC3.b1
D051117.3TWP/SMET/C3 - Instrument failuretwpsmet60sC3.b1
D051202.3TWP/SKYRAD/C3 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2
downwelling longwave
twpskyrad60sC3.b1
D051206.5TWP/GNDRAD/C3 - IRT malfunctiontwpgndrad60sC3.b1
D060110.3TWP/SKYRAD/C3 - IRT damagedtwpskyrad20sC3.a0, twpskyrad60sC3.b1
D060630.33TWP/SKYRAD/C3 - Reprocess: Longwave Calibration errortwpskyrad60sC3.b1
D060630.36TWP/GNDRAD/C3 - Reprocess: Longwave Calibration errortwpgndrad60sC3.b1
D060818.3TWP/SMET/C3 - Reprocess: Barometric Data Changed from hPa to kPatwpsmet60sC3.b1


DQRID : D050808.3
Start DateStart TimeEnd DateEnd Time
08/05/2005003008/05/20050330
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)
  • Max Temperature at lowest Model Level- 1 hr(temp_max)
  • Vapor pressure mean(vappress_mean)
  • Vapor pressure standard deviation(vappress_sd)
  • Relative humidity mean(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)
  • Min Temperature at lowest Model Level- 1 hr(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)
  • Temperature standard deviation(temp_sd)


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DQRID : D050831.4
Start DateStart TimeEnd DateEnd Time
08/05/2005003008/05/20050330
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)
  • Max Temperature at lowest Model Level- 1 hr(temp_max)
  • Vapor pressure mean(vappress_mean)
  • Vapor pressure standard deviation(vappress_sd)
  • Relative humidity mean(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)
  • Min Temperature at lowest Model Level- 1 hr(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)
  • Temperature standard deviation(temp_sd)


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DQRID : D050919.4
Start DateStart TimeEnd DateEnd Time
08/05/2005003008/05/20050200
08/09/2005000008/09/20050200
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, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated 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, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)


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DQRID : D051114.3
Start DateStart TimeEnd DateEnd Time
11/14/2005045312/02/20050000
Subject:
TWP/SKYRAD/C3 - tracker inoperative
DataStreams:twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1
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, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)

twpskyrad20sC3.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)


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DQRID : D051115.1
Start DateStart TimeEnd DateEnd Time
11/14/2005045311/15/20052215
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)


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DQRID : D051117.2
Start DateStart TimeEnd DateEnd Time
11/14/2005045311/15/20050050
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)
  • Relative humidity mean(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)


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DQRID : D051117.3
Start DateStart TimeEnd DateEnd Time
11/14/2005045311/23/20050000
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)


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DQRID : D051202.3
Start DateStart TimeEnd DateEnd Time
05/21/2004000009/09/20052012
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)


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DQRID : D051206.5
Start DateStart TimeEnd DateEnd Time
11/21/2005150012/05/20050100
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)


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DQRID : D060110.3
Start DateStart TimeEnd DateEnd Time
11/13/2005231403/07/20060257
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/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)

twpskyrad20sC3.a0:
  • Instantaneous Sky/Cloud Infrared(inst_sky_ir_signal)


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DQRID : D060630.33
Start DateStart TimeEnd DateEnd Time
05/20/2004220012/21/20052136
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)


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DQRID : D060630.36
Start DateStart TimeEnd DateEnd Time
05/20/2004010012/21/20052137
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, Ventilated Pyrgeometer(up_long_hemisp)


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DQRID : D060818.3
Start DateStart TimeEnd DateEnd Time
12/02/2003000007/13/20062219
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:
  • Atmospheric pressure(atmos_pressure)


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