DQRs for Session: 139998 User:bsyin1Completed: 01-24-2012

Data Quality Reports for Session: 139998 User: bsyin1 Completed: 01/24/2012

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D000613.1	TWP/C2/GNDRAD Net radiometer	twpgndrad60sC2.a1, twpgndrad60sC2.b1
D000711.62	TWP/C1/GNDRAD Net Radiometer: Cracked dome	twpgndrad60sC1.a1, twpgndrad60sC1.b1
D000711.64	TWP/GNDRAD/C1 - Net Radiometer: Correction for negative net fluxes	twpgndrad60sC1.a1, twpgndrad60sC1.b1
D000711.68	TWP/GNDRAD/C1 - PIR: Incorrect wiring	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
D000711.70	TWP/GNDRAD/C1 - PIR and IRT: surface temperature comparison	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
D000718.20	TWP/GNDRAD/C1 - PIR: Extended data gap	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
D000718.21	TWP/GNDRAD/C1 - PSP: Comparison test	twpgndrad60sC1.a1, twpgndrad60sC1.b1
D000726.5	TWP/GNDRAD/C1 - Extended data gap	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
D011211.5	TWP/GNDRAD/C1 - GNDRAD radiometer replacement	twpgndrad60sC1.a1, twpgndrad60sC1.b1
D020613.2	TWP/C2 Installation	twpgndradC2.00, twpgndrad20sC2.a1, twpgndrad60sC2.a1, twpgndrad60sC2.b1
D020620.61	TWP/C1 - Incorrect elevation reported in Manus Data	twpsmet60sC1.a1, twpsmet60sC1.b1, twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
D030224.1	TWP/GNDRAD/C2 - Calibration Check; GNDRAD instruments inverted	twpgndrad20sC2.a1, twpgndrad60sC2.a1, twpgndrad60sC2.b1
D030317.3	TWP/GNDRAD/C1 - GNDRAD logger configured as SMET	twpgndradC1.00, twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
D030730.1	TWP/GNDRAD/C2 - IRT problem	twpgndrad60sC2.b1
D031007.4	TWP/GNDRAD/C2 - Data unrepresentative during radiometer comparison	twpgndrad20sC2.a1, twpgndrad60sC2.a1
D031215.2	TWP/GNDRAD/C1 -PIRdown and PSPdown Inverted for Comparison	twpgndradC1.00, twpgndrad20sC1.a1, twpgndrad60sC1.b1
D040416.1	TWP/GNDRAD/C3 - IRT bias	twpgndrad60sC3.b1
D040813.9	TWP/GNDRAD/C1 - RESET 14 activities	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
D040929.2	TWP/GNDRAD/C2 - inverted PIR and PSP	twpgndrad20sC2.a0
D041015.3	TWP/GNDRAD/C2 - incorrect IRT calibration	twpgndrad60sC2.b1
D041106.2	TWP/GNDRAD/C1 - GNDRAD inverted for radiometer comparison	twpgndrad60sC1.b1
D050221.2	TWP/GNDRAD/C3 - IRT bias	twpgndrad60sC3.b1
D050221.3	TWP/GNDRAD/C3 - Reprocess: IRT with wrong calibration	twpgndrad60sC3.b1
D050504.2	TWP/GNDRAD/C2 - IRT connector	twpgndrad60sC2.b1
D050815.1	TWP/GNDRAD/C2 - IRT power supply failed	twpgndradC2.00, twpgndrad60sC2.b1
D050919.4	TWP/GNDRAD/C3 - Tower inverted for instrument testing and replacement	twpgndrad60sC3.b1
D050926.6	TWP/GNDRAD/C2 - Gndrad inverted for radiometer	twpgndrad60sC2.b1
D051123.2	TWP/GNDRAD/C1 - Gndrad inverted for comparison of radiometers	twpgndrad60sC1.b1
D051206.5	TWP/GNDRAD/C3 - IRT malfunction	twpgndrad60sC3.b1
D060111.1	TWP/GNDRAD/C3 - IRT power	twpgndrad60sC3.b1
D060509.1	TWP/GNDRAD/C3 - IRT failed	twpgndrad60sC3.b1
D060630.34	TWP/GNDRAD/C1 - Reprocess: Longwave Calibration error	twpgndrad60sC1.b1
D060630.35	TWP/GNDRAD/C2 - Reprocess: Longwave Calibration error	twpgndrad60sC2.b1
D060630.36	TWP/GNDRAD/C3 - Reprocess: Longwave Calibration error	twpgndrad60sC3.b1
D060823.1	TWP/GNDRAD/C3 - IRT bias	twpgndrad60sC3.b1
D070110.1	TWP/GNDRAD/C2 - IRT signal	twpgndrad60sC2.b1
D070406.6	TWP/GNDRAD/C2 - Reprocess: IRT calibration	twpgndrad60sC2.b1
D071001.4	TWP/GNDRAD/C3 - Maintenance activities affected GNDRAD	twpgndrad20sC3.a0, twpgndrad60sC3.b1
D071204.1	TWP/GNDRAD/C2 - Reprocessed: Incorrect calibration	twpgndrad20sC2.a0, twpgndrad60sC2.b1
D080121.2	TWP/GNDRAD/C3 - Gndrad shutdown for tropical cylone	twpgndradC3.00, twpgndrad20sC3.a0, twpgndrad20sC3.a1, twpgndrad60sC3.b1
D081027.1	TWP/GNDRAD/C1 - IRT power connector	twpgndrad60sC1.b1
D090702.1	TWP/GNDRAD/C2 - IRT missing	twpgndrad60sC2.b1
D100604.2	TWP/GNDRAD/C2 - IRT power failure	twpgndrad20sC2.a0, twpgndrad60sC2.b1
D981222.3	TWP/GNDRAD/C1 - Incorrect dome calibration factor	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
D990909.1	TWP/GNDRAD/C2 - Instrument inverted for Calibration	twpgndradC2.00, twpgndrad20sC2.a1, twpgndrad60sC2.a1
D990909.3	Cailbration interruption of data at TWP Nauru	twpgndradC2.00, twpgndrad20sC2.a1, twpgndrad60sC2.a1, twpgndrad60sC2.b1

DQRID : D000613.1

Start Date	Start Time	End Date	End Time
11/20/1998	0000	12/31/1998	2359

Subject:	TWP/C2/GNDRAD Net radiometer
DataStreams:	twpgndrad60sC2.a1, twpgndrad60sC2.b1
Description:	The discrepancy between the Net radiometer and the net flux calculated from the Eppleys ranged from about 10-15% at mid-day under clear sky conditions with the Net radiometer reporting the lower value.
Measurements:	twpgndrad60sC2.b1: net_min net_mean net_sd net_max twpgndrad60sC2.a1: net_min net_mean net_sd net_max

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DQRID : D000711.62

Start Date	Start Time	End Date	End Time
10/11/1996	0000	07/27/1997	2359

Subject:	TWP/C1/GNDRAD Net Radiometer: Cracked dome
DataStreams:	twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	A crack in the up-looking radiometer dome was discovered on 970227. It is not known how long the dome was cracked. The dome was replaced with a spare, out of calibration unit, on 970227. There was not an obvious change in the instrument performance when the instrument was replaced.
Measurements:	twpgndrad60sC1.b1: net_max net_min net_sd net_mean twpgndrad60sC1.a1: net_max net_min net_sd net_mean

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DQRID : D000711.64

Start Date	Start Time	End Date	End Time
10/11/1996	0000	11/30/1997	2359

Subject:	TWP/GNDRAD/C1 - Net Radiometer: Correction for negative net fluxes
DataStreams:	twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	The Net radiometer seems to have a calibration problem and a poor cosine response. The Net radiometer consistently measures low relative to Net surface irradiance calculated from the SKYRAD and GNDRAD Eppleys around local noon. The relative discrepancy changes rapidly with sun angle and the two streams typically cross in mid-morning and mid-afternoon beyond which the Net radiometer reads high relative to the Eppleys. The net radiometer typically reports postive values for the net flux during the day and negative values at night. There are actually different calibration coefficients that must be applied for positive and negative fluxes. Currently, all data are processed by applying the positive flux coefficient. Consequently, the negative values are in error. The net flux, F, is obtained by simply applying the formula F = CV where V is the measured voltage and C is the calibration factor. Therefore, negative fluxes can be corrected by multiplying the fluxes by the ratio of the negative calibration factor, C_neg to the postive factor C_pos, so the corrected flux for negative values is equal to F_neg = FC_neg/C_pos where F is the flux value reported in the data files. Through 970227, the values for these calibration factors are F_pos = 9.26 and F_neg = 11.43. After 970227, the calibration factors are F_pos = 9.33 and F_neg = 11.6.
Measurements:	twpgndrad60sC1.b1: net_max net_min net_sd net_mean twpgndrad60sC1.a1: net_max net_min net_sd net_mean

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DQRID : D000711.68

Start Date	Start Time	End Date	End Time
12/11/1996	0000	02/27/1997	0659

Subject:	TWP/GNDRAD/C1 - PIR: Incorrect wiring
DataStreams:	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	Data from the GNDRAD PIR is not valid for this period because of an incorrect connection to the data logger. Collection of good data from the PIR resumed on 970227 at 07Z.
Measurements:	twpgndrad60sC1.b1: pir1_mean pir1_max pir1_min pir1_sd twpgndrad60sC1.a1: pir1_sd pir1_max pir1_mean pir1_min twpgndrad20sC1.a1: pir1_voltage pir1_dome_therm pir1_case_therm

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DQRID : D000711.70

Start Date	Start Time	End Date	End Time
11/01/1998	0000	03/31/1999	2359

Subject:	TWP/GNDRAD/C1 - PIR and IRT: surface temperature comparison
DataStreams:	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	The GNDRAD continues to look nominally OK. The daily average irradiances are about what is expected. The comparison of the downward facing IRT and the calculated brightness temperature from the downward facing PIR show agreement within and average of about 0.5O C. About 19981206, the daily average agreement suddenly seems to have gotten better. We should note to monitor this in the next data package.
Measurements:	twpgndrad60sC1.b1: irt1_min irt1_mean pir1_mean pir1_max pir1_min irt1_sd pir1_sd irt1_max twpgndrad60sC1.a1: irt1_min irt1_max pir1_sd pir1_mean irt1_mean pir1_min pir1_max irt1_sd twpgndrad20sC1.a1: pir1_voltage pir1_case_therm pir1_dome_therm

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DQRID : D000718.20

Start Date	Start Time	End Date	End Time
12/02/1996	1400	02/28/1997	0000

Subject:	TWP/GNDRAD/C1 - PIR: Extended data gap
DataStreams:	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	The lines to the GNDRAD data logger were cut on December 2, 1996 at approximately 1400 GMT. No data was collected from GNDRAD until the lines were reconnected on December 12 at approximately 0200 GMT. The PIR was not reconnected properly, however, and data flow from that instrument did not resume until a RESET visit in February. Data flow for the PIR resumed on February 28, 1997. The IRT and Net radiometer appear to be operating as before, but without the downlooking PIR, we cannot perform any internal tests.
Measurements:	twpgndrad60sC1.b1: pir1_mean pir1_max pir1_min pir1_sd twpgndrad60sC1.a1: pir1_sd pir1_max pir1_mean pir1_min twpgndrad20sC1.a1: pir1_voltage pir1_dome_therm pir1_case_therm

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DQRID : D000718.21

Start Date	Start Time	End Date	End Time
02/23/1997	2000	02/24/1997	2300

Subject:	TWP/GNDRAD/C1 - PSP: Comparison test
DataStreams:	twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	The GNDRAD PSP was turned upside-down for comparison with the SKYRAD PSPs.
Measurements:	twpgndrad60sC1.b1: psp1_max psp1_mean psp1_sd psp1_min twpgndrad60sC1.a1: psp1_mean psp1_sd psp1_min psp1_max

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DQRID : D000726.5

Start Date	Start Time	End Date	End Time
12/02/1996	1400	12/12/1996	0200

Subject:	TWP/GNDRAD/C1 - Extended data gap
DataStreams:	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	The lines to the GNDRAD data logger were cut on December 2, 1996 at approximately 1400 GMT. No data was collected from GNDRAD until the lines were reconnected on December 12 at approximately 0200 GMT.
Measurements:	twpgndrad60sC1.b1: alt lat external_voltage filename psp1_max pir1_mean net_min net_max pir1_max pir1_min psp1_sd irt1_max base_time irt1_min net_sd psp1_mean irt1_mean irt1_sd pir1_sd net_mean logger_temp time_offset bit_data internal_voltage lon psp1_min twpgndrad60sC1.a1: net_max lon irt1_max net_sd pir1_min psp1_mean alt net_mean time_offset base_time irt1_min logger_temp net_min irt1_mean lat irt1_sd pir1_sd pir1_mean pir1_max bit_data psp1_min external_voltage psp1_sd filename internal_voltage psp1_max twpgndrad20sC1.a1: pir1_voltage pir1_dome_therm lat time_offset alt base_time pir1_case_therm lon filename

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DQRID : D011211.5

Start Date	Start Time	End Date	End Time
10/25/2001	0000	10/25/2001	0100

Subject:	TWP/GNDRAD/C1 - GNDRAD radiometer replacement
DataStreams:	twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	The GNDRAD radiometers were replaced 10/25/01 from 00:00 to 01:00.
Measurements:	twpgndrad60sC1.b1: up_short_hemisp_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) up_long_hemisp_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) twpgndrad60sC1.a1: Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) up_short_hemisp_std up_long_hemisp_std

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DQRID : D020613.2

Start Date	Start Time	End Date	End Time
10/24/1998	0102	11/19/1998	2359

Subject:	TWP/C2 Installation
DataStreams:	twpgndradC2.00, twpgndrad20sC2.a1, twpgndrad60sC2.a1, twpgndrad60sC2.b1
Description:	The Nauru ARCS was installed during the period September-November 1998. Data were being collected by the end of October, but for the first several weeks of November, the site was undergoing considerable change, so data from that period should be used with caution. The official site dedication occured on November 20. Most on-site activity ended following the dedication so we will consider November 20 to be the beginning of the Nauru operations. The last members of the installation team left Nauru on November 24.
Measurements:	twpgndradC2.00: Raw data stream - documentation not supported twpgndrad60sC2.b1: pir1_max internal_voltage psp1_max psp1_sd net_mean pir1_min net_sd alt lat pir1_mean lon net_max irt1_mean logger_temp base_time filename psp1_min psp1_mean irt1_sd irt1_min irt1_max external_voltage net_min pir1_sd bit_data time_offset twpgndrad60sC2.a1: filename external_voltage net_mean irt1_min psp1_sd logger_temp net_sd psp1_max pir1_sd internal_voltage time_offset lat irt1_max bit_data irt1_sd pir1_mean psp1_min psp1_mean base_time lon irt1_mean net_min pir1_min pir1_max alt net_max twpgndrad20sC2.a1: lat pir1_voltage filename pir1_case_therm time_offset base_time pir1_dome_therm lon alt

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DQRID : D020620.61

Start Date	Start Time	End Date	End Time
10/10/1996	0001	06/22/2000	2359

Subject:	TWP/C1 - Incorrect elevation reported in Manus Data
DataStreams:	twpsmet60sC1.a1, twpsmet60sC1.b1, twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	(From Bill Clements) We have been using 6m MSL as the station elevation of Momote (Manus). This was based on information posted near the station barometer in the Momote Weather Service Office. It turns out that the official WMO station elevation for Momote is 4m MSL and the upper air elevation is 5m MSL. All Manus instruments except the sonde station are at 4m MSL. The sonde launching station is at 5m MSL.
Measurements:	twpgndrad60sC1.b1: alt twpgndrad60sC1.a1: alt twpsmet60sC1.b1: alt twpgndrad20sC1.a1: alt twpsmet60sC1.a1: alt

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DQRID : D030224.1

Start Date	Start Time	End Date	End Time
01/03/2000	2225	01/19/2000	2359
06/27/2000	0440	06/30/2000	2359

Subject:	TWP/GNDRAD/C2 - Calibration Check; GNDRAD instruments inverted
DataStreams:	twpgndrad20sC2.a1, twpgndrad60sC2.a1, twpgndrad60sC2.b1
Description:	During calibration check periods the gndrad instruments are inverted to compare with the skyrad pir and psp.
Measurements:	twpgndrad60sC2.b1: Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) pir1_max psp1_max psp1_sd Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) up_long_hemisp_std psp1_min Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) pir1_min Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) psp1_mean up_short_hemisp_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) pir1_mean pir1_sd twpgndrad60sC2.a1: up_long_hemisp_std pir1_mean Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) psp1_sd psp1_min Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) psp1_mean psp1_max Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) pir1_sd pir1_min Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) pir1_max up_short_hemisp_std Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) twpgndrad20sC2.a1: pir1_dome_therm pir1_voltage pir1_case_therm

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DQRID : D030317.3

Start Date	Start Time	End Date	End Time
03/03/2003	1700	03/13/2003	2130

Subject:	TWP/GNDRAD/C1 - GNDRAD logger configured as SMET
DataStreams:	twpgndradC1.00, twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	the configuration for the SMET was inadvertently loaded into the GNDRAD at Manus at 03/03/2003 17:00 GMT. This error was found and corrected on 03/13/2003 at 21:30 GMT.
Measurements:	twpgndrad60sC1.b1: Effective Surface (Skin) Temperature(sfc_ir_temp) alt lat external_voltage filename psp1_max Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) pir1_mean net net_min sfc_ir_temp_std Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) up_long_hemisp_std net_max pir1_max pir1_min psp1_sd irt1_max base_time up_short_hemisp_std irt1_min Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) net_sd Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) psp1_mean net_std irt1_mean irt1_sd pir1_sd net_mean logger_temp time_offset bit_data internal_voltage Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) lon psp1_min twpgndrad60sC1.a1: net_max lon irt1_max net_sd pir1_min psp1_mean alt net_mean time_offset net_std base_time Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) irt1_min logger_temp net_min irt1_mean lat Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) up_short_hemisp_std sfc_ir_temp_std Surface Infra-Red Temperature Minima(sfc_ir_temp_min) net Effective Surface (Skin) Temperature(sfc_ir_temp) irt1_sd pir1_sd pir1_mean Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) pir1_max bit_data psp1_min up_long_hemisp_std external_voltage psp1_sd filename internal_voltage psp1_max Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) twpgndrad20sC1.a1: pir1_voltage inst_up_long_dome_resist pir1_dome_therm inst_up_long_case_resist lat time_offset alt base_time inst_up_long_hemisp_tp pir1_case_therm lon filename twpgndradC1.00: Raw data stream - documentation not supported

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DQRID : D030730.1

Start Date	Start Time	End Date	End Time
07/12/2003	2100	09/14/2003	1100

Subject:	TWP/GNDRAD/C2 - IRT problem
DataStreams:	twpgndrad60sC2.b1
Description:	The GNDRAD IRT exhibited a positive bias compared to the PIR from 2100 to 0700 UTC each day. The problem was corrected by removing the signal cable, cleaning the contacts, and reconnecting the cable.
Measurements:	twpgndrad60sC2.b1: sfc_ir_temp_std Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D031007.4

Start Date	Start Time	End Date	End Time
09/16/2003	0000	09/23/2003	0000

Subject:	TWP/GNDRAD/C2 - Data unrepresentative during radiometer comparison
DataStreams:	twpgndrad20sC2.a1, twpgndrad60sC2.a1
Description:	GNDRAD PIR and PSP were inverted during RESET radiometer comparison
Measurements:	twpgndrad60sC2.a1: up_long_hemisp_std pir1_min Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) pir1_max pir1_mean Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) up_short_hemisp_std psp1_sd psp1_min Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) psp1_mean Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) psp1_max Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) pir1_sd twpgndrad20sC2.a1: inst_up_long_case_resist pir1_voltage inst_up_long_dome_resist inst_up_long_hemisp_tp pir1_case_therm pir1_dome_therm

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DQRID : D031215.2

Start Date	Start Time	End Date	End Time
12/01/2003	0620	12/09/2003	1155

Subject:	TWP/GNDRAD/C1 -PIRdown and PSPdown Inverted for Comparison
DataStreams:	twpgndradC1.00, twpgndrad20sC1.a1, twpgndrad60sC1.b1
Description:	PIRdown and PSPdown instruments inverted for comparison with calibrated instruments.
Measurements:	twpgndrad60sC1.b1: up_short_hemisp_std psp1_max Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) psp1_mean Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) pir1_mean up_long_hemisp_std pir1_max pir1_min Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) pir1_sd psp1_sd psp1_min twpgndrad20sC1.a1: inst_up_long_hemisp_tp pir1_case_therm pir1_dome_therm inst_up_long_case_resist inst_up_long_dome_resist twpgndradC1.00: Raw data stream - documentation not supported

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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: Effective Surface (Skin) Temperature(sfc_ir_temp) sfc_ir_temp_std Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Surface Infra-Red Temperature Minima(sfc_ir_temp_min)

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DQRID : D040813.9

Start Date	Start Time	End Date	End Time
10/09/2001	0000	10/26/2001	2359

Subject:	TWP/GNDRAD/C1 - RESET 14 activities
DataStreams:	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	RESET14 activities may have affected data in in subtle ways during this period.
Measurements:	twpgndrad60sC1.b1: Effective Surface (Skin) Temperature(sfc_ir_temp) up_short_hemisp_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) net_std Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) net net_min sfc_ir_temp_std Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) up_long_hemisp_std net_max Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) twpgndrad60sC1.a1: net_max Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) net_mean net_std up_long_hemisp_std Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) net_min Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) up_short_hemisp_std sfc_ir_temp_std Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) twpgndrad20sC1.a1: inst_up_long_dome_resist inst_up_long_hemisp_tp inst_up_long_case_resist

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DQRID : D040929.2

Start Date	Start Time	End Date	End Time
09/24/2004	0200	09/28/2004	0115

Subject:	TWP/GNDRAD/C2 - inverted PIR and PSP
DataStreams:	twpgndrad20sC2.a0
Description:	The Gndrad PIR and PSP were inverted for comparison testing and instrument replacement during this period.
Measurements:	twpgndrad20sC2.a0: inst_up_long_hemisp_tp inst_up_long_case_resist inst_up_short_hemisp inst_up_long_dome_resist

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DQRID : D041015.3

Start Date	Start Time	End Date	End Time
07/05/2004	0501	07/19/2004	0206

Subject:	TWP/GNDRAD/C2 - incorrect IRT calibration
DataStreams:	twpgndrad60sC2.b1
Description:	When the GNDRAD data logger was upgraded, the calibration offset for the IRT was initially incorrect.
Measurements:	twpgndrad60sC2.b1: Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D041106.2

Start Date	Start Time	End Date	End Time
11/01/2004	0040	11/05/2004	2318

Subject:	TWP/GNDRAD/C1 - GNDRAD inverted for radiometer comparison
DataStreams:	twpgndrad60sC1.b1
Description:	The GNDRAD PIR and PSP were inverted during this period for comparison with replacement instruments.
Measurements:	twpgndrad60sC1.b1: up_short_hemisp_std psp1_max Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) psp1_mean Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) pir1_mean up_long_hemisp_std pir1_max pir1_min Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) pir1_sd psp1_sd psp1_min

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DQRID : D050221.2

Start Date	Start Time	End Date	End Time
06/10/2004	0700	12/25/2004	0300

Subject:	TWP/GNDRAD/C3 - IRT bias
DataStreams:	twpgndrad60sC3.b1
Description:	The IRT measured higher surface temperatures than expected from the PIR, even at night.
Measurements:	twpgndrad60sC3.b1: Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Surface Infra-Red Temperature Minima(sfc_ir_temp_min)

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DQRID : D050221.3

Start Date	Start Time	End Date	End Time
11/17/2004	0000	11/19/2004	0105

Subject:	TWP/GNDRAD/C3 - Reprocess: IRT with wrong calibration
DataStreams:	twpgndrad60sC3.b1
Description:	A spare IRT was installed that was not configured properly.
Measurements:	twpgndrad60sC3.b1: Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Surface Infra-Red Temperature Minima(sfc_ir_temp_min)

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DQRID : D050504.2

Start Date	Start Time	End Date	End Time
03/27/2005	2330	04/03/2005	0240

Subject:	TWP/GNDRAD/C2 - IRT connector
DataStreams:	twpgndrad60sC2.b1
Description:	The IRT had a problem with the connector of either the signal or power cable which produced an output of 0 volts equivalent to a measurement of 223K. The problem was corrected when the connectors were cleaned and tightened.
Measurements:	twpgndrad60sC2.b1: sfc_ir_temp_std Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D050815.1

Start Date	Start Time	End Date	End Time
08/11/2005	1648	08/16/2005	2230

Subject:	TWP/GNDRAD/C2 - IRT power supply failed
DataStreams:	twpgndradC2.00, twpgndrad60sC2.b1
Description:	The IRT output dropped to its minimum output of 223 K (0 volts). It was determined the 24 V DC converter had failed. The converter was replaced on 16 August and the instrument began reporting normally again. The IRT data are unusable during the five day period when the DC converter was faulty. The GNDRAD (down-looking) IRT is used primarily for surface temperature. The PIR can be used for this purpose by inverting the IR flux equation, Flux = sigma*temperature^4 where sigma = 5.67x10-8 W/m^2K^4. But, unlike the IRT, the PIR measurement is strongly effected by the air temperature in addition to the surface temperature. At night, when the air temperature approaches the surface temperature, the PIR provides a good estimate of the surface temperature. During the day, however, the PIR tends to underestimate the ground temperature, particularly on sunny days. The magnitude of the underestimate can be estimated by evaluating periods when both instruments are operating but is typically on the order of 5-10C.
Measurements:	twpgndrad60sC2.b1: irt1_mean irt1_sd irt1_min irt1_max twpgndradC2.00: Raw data stream - documentation not supported

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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: Effective Surface (Skin) Temperature(sfc_ir_temp) sfc_ir_temp_std up_long_hemisp_std Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) up_short_hemisp_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

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DQRID : D050926.6

Start Date	Start Time	End Date	End Time
09/17/2005	0152	09/23/2005	0115

Subject:	TWP/GNDRAD/C2 - Gndrad inverted for radiometer
DataStreams:	twpgndrad60sC2.b1
Description:	Gndrad instruments PIR and PSP inverted for replacement instrument installation and comparison
Measurements:	twpgndrad60sC2.b1: psp1_min sfc_ir_temp_std Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) pir1_min pir1_max Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) psp1_mean Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) psp1_max up_short_hemisp_std Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) psp1_sd Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Effective Surface (Skin) Temperature(sfc_ir_temp) up_long_hemisp_std Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) pir1_mean pir1_sd

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DQRID : D051123.2

Start Date	Start Time	End Date	End Time
11/11/2005	2230	11/17/2005	0030

Subject:	TWP/GNDRAD/C1 - Gndrad inverted for comparison of radiometers
DataStreams:	twpgndrad60sC1.b1
Description:	Radiometers GNDRAD PIR and PSP inverted for radiometer comparison
Measurements:	twpgndrad60sC1.b1: Effective Surface (Skin) Temperature(sfc_ir_temp) up_short_hemisp_std psp1_max net_sd Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) psp1_mean Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) net_std Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) pir1_mean net net_min pir1_sd net_mean sfc_ir_temp_std Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) net_max up_long_hemisp_std pir1_max pir1_min Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) psp1_sd psp1_min

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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: Effective Surface (Skin) Temperature(sfc_ir_temp) sfc_ir_temp_std Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Surface Infra-Red Temperature Minima(sfc_ir_temp_min)

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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: Effective Surface (Skin) Temperature(sfc_ir_temp) sfc_ir_temp_std Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Surface Infra-Red Temperature Minima(sfc_ir_temp_min)

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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: Effective Surface (Skin) Temperature(sfc_ir_temp) sfc_ir_temp_std Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Surface Infra-Red Temperature Minima(sfc_ir_temp_min)

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DQRID : D060630.34

Start Date	Start Time	End Date	End Time
08/02/2004	0700	12/21/2005	2204

Subject:	TWP/GNDRAD/C1 - Reprocess: Longwave Calibration error
DataStreams:	twpgndrad60sC1.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:	twpgndrad60sC1.b1: Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

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DQRID : D060630.35

Start Date	Start Time	End Date	End Time
07/05/2004	2202	12/21/2005	2149

Subject:	TWP/GNDRAD/C2 - Reprocess: Longwave Calibration error
DataStreams:	twpgndrad60sC2.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:	twpgndrad60sC2.b1: Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

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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: Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

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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: Effective Surface (Skin) Temperature(sfc_ir_temp) sfc_ir_temp_std Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Surface Infra-Red Temperature Minima(sfc_ir_temp_min)

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DQRID : D070110.1

Start Date	Start Time	End Date	End Time
12/03/2006	0400	02/04/2007	2316

Subject:	TWP/GNDRAD/C2 - IRT signal
DataStreams:	twpgndrad60sC2.b1
Description:	When the other GNDRAD radiometers were replaced on 12/3/2006, the quality of the IRT signal began to degrade until 12/26 when it became unusable. The instrument was replaced on 2/4/2007.
Measurements:	twpgndrad60sC2.b1: sfc_ir_temp_std Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D070406.6

Start Date	Start Time	End Date	End Time
02/04/2007	2317	02/17/2007	0400

Subject:	TWP/GNDRAD/C2 - Reprocess: IRT calibration
DataStreams:	twpgndrad60sC2.b1
Description:	The configuration of the IRT was set to that used at TWP/C3. This caused the calibration of the data to be wrong. It was corrected by reconfiguring the IRT to match the datalogger program. These data can be reprocessed and corrected by adding 10K, i.e. sfc_ir_temp(new) = sfc_ir_temp(old) + 10K.
Measurements:	twpgndrad60sC2.b1: Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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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: inst_up_long_dome_resist inst_sfc_ir_signal inst_up_short_hemisp lat lon base_time time alt inst_up_long_hemisp_tp inst_up_long_case_resist time_offset twpgndrad60sC3.b1: net_min net_std up_long_hemisp_std time_offset external_voltage lat Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) lon Effective Surface (Skin) Temperature(sfc_ir_temp) logger_temp base_time net sfc_ir_temp_std net_max alt Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) up_short_hemisp_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) bit_data Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) internal_voltage Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)

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DQRID : D071204.1

Start Date	Start Time	End Date	End Time
11/25/2007	2202	11/30/2007	1724

Subject:	TWP/GNDRAD/C2 - Reprocessed: Incorrect calibration
DataStreams:	twpgndrad20sC2.a0, twpgndrad60sC2.b1
Description:	The Gndrad PSP was changed out 11/25 but the datalogger program was not updated until 11/30. PSP #31293 installed 20071125.2202. Correct calibration coefficient = 123.46. Reprocessed to correct upwelling shortwave hemispheric irradiance (US) by: US(new) = (US(old) / 123.56 ) * 123.46 Reprocessing completed March 2008.
Measurements:	twpgndrad60sC2.b1: up_short_hemisp_std Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) twpgndrad20sC2.a0: inst_up_short_hemisp

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DQRID : D080121.2

Start Date	Start Time	End Date	End Time
01/03/2008	1000	01/07/2008	0515

Subject:	TWP/GNDRAD/C3 - Gndrad shutdown for tropical cylone
DataStreams:	twpgndradC3.00, twpgndrad20sC3.a0, twpgndrad20sC3.a1, twpgndrad60sC3.b1
Description:	On Jan 3rd approximately 1000GMT the effects of a tropical cyclone started affecting the installed radiometer measurements at ARM/TWP/C3(Darwin) - both Skyrad and Gndrad. On Jan 4th 0740 GMT the Gndrad station was shutdown to avoid damage due to the close passing of this storm. Station was restarted Jan 7th 0515GMT.
Measurements:	twpgndrad20sC3.a1: time_offset alt lat inst_up_long_case_resist inst_up_long_hemisp_tp lon base_time inst_up_long_dome_resist twpgndrad20sC3.a0: inst_sfc_ir_signal inst_up_short_hemisp lat lon base_time time alt inst_up_long_hemisp_tp time_offset twpgndrad60sC3.b1: up_long_hemisp_std time_offset lat Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) lon Effective Surface (Skin) Temperature(sfc_ir_temp) logger_temp base_time sfc_ir_temp_std alt Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) up_short_hemisp_std Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max) Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) twpgndradC3.00: Raw data stream - documentation not supported

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DQRID : D081027.1

Start Date	Start Time	End Date	End Time
10/24/2008	0100	11/03/2008	2330

Subject:	TWP/GNDRAD/C1 - IRT power connector
DataStreams:	twpgndrad60sC1.b1
Description:	The power connector of the IRT broke due to corrosion. The instrument was replaced.
Measurements:	twpgndrad60sC1.b1: Effective Surface (Skin) Temperature(sfc_ir_temp) sfc_ir_temp_std Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D090702.1

Start Date	Start Time	End Date	End Time
06/24/2009	2050	06/25/2009	2350

Subject:	TWP/GNDRAD/C2 - IRT missing
DataStreams:	twpgndrad60sC2.b1
Description:	The 24 VDC power supply for the IRT failed. IRT data are missing and unrecoverable.
Measurements:	twpgndrad60sC2.b1: sfc_ir_temp_std Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D100604.2

Start Date	Start Time	End Date	End Time
04/17/2010	1434	04/20/2010	0335

Subject:	TWP/GNDRAD/C2 - IRT power failure
DataStreams:	twpgndrad20sC2.a0, twpgndrad60sC2.b1
Description:	The DC-DC power converter failed and was replaced.
Measurements:	twpgndrad60sC2.b1: sfc_ir_temp_std Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) twpgndrad20sC2.a0: inst_sfc_ir_signal

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DQRID : D981222.3

Start Date	Start Time	End Date	End Time
10/09/1996	1943	12/09/1998	0000

Subject:	TWP/GNDRAD/C1 - Incorrect dome calibration factor
DataStreams:	twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1
Description:	The Manus GNDRAD PIR had an incorrect dome factor since installation. The following is an estimate by Chris Cornwall of the magnitude of the effect of this calibration error. The magnitude of this error is smaller than the calibration accuracy. "Processed the instantaneous data from ARCS2 (10, 30 and 50 seconds after the minute) using 4.32 as the dome factor, and also using 4.00 as the dome factor, as it should have been. The difference between the calculated irradiance results was negligible, as was expected with an instrument operating in the downward-facing direction. Over the three days from 11/06/98 to 11/08/98, the error between the two signals averaged 0.09%. Overnight values were much lower than this, daytime values peaked at 0.42%. The statistics for these error signals were as follows: average error 0.000895 standard dev 0.001119 max error 0.004242 min error -0.00064 We should change ARCS1 so it is using the correct value for the groundrad pir dome coefficient (4.0 instead of 4.32), and we may want to include a DQR stating these findings, although they are much smaller than the overall uncertainty of the PIR itself."
Measurements:	twpgndrad60sC1.b1: up_long_hemisp_std Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max) twpgndrad60sC1.a1: pir1_sd pir1_max pir1_mean pir1_min twpgndrad20sC1.a1: pir1_voltage pir1_dome_therm pir1_case_therm

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DQRID : D990909.1

Start Date	Start Time	End Date	End Time
08/05/1999	0500	08/11/1999	2030

Subject:	TWP/GNDRAD/C2 - Instrument inverted for Calibration
DataStreams:	twpgndradC2.00, twpgndrad20sC2.a1, twpgndrad60sC2.a1
Description:	The GNDRAD was inverted to look at the sky for comparison with other radiometers.
Measurements:	twpgndradC2.00: Raw data stream - documentation not supported twpgndrad60sC2.a1: filename external_voltage irt1_sd net_mean pir1_mean irt1_min psp1_sd logger_temp net_sd psp1_min psp1_mean psp1_max base_time lon irt1_mean pir1_sd net_min pir1_min pir1_max internal_voltage time_offset lat irt1_max alt bit_data net_max twpgndrad20sC2.a1: base_time pir1_dome_therm lon lat pir1_voltage filename alt pir1_case_therm time_offset

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DQRID : D990909.3

Start Date	Start Time	End Date	End Time
08/07/1999	0415	08/07/1999	0600

Subject:	Cailbration interruption of data at TWP Nauru
DataStreams:	twpgndradC2.00, twpgndrad20sC2.a1, twpgndrad60sC2.a1, twpgndrad60sC2.b1
Description:	Data interrupted to perform electronic calibration of data logger
Measurements:	twpgndradC2.00: Raw data stream - documentation not supported twpgndrad60sC2.b1: pir1_max internal_voltage psp1_max psp1_sd net_mean pir1_min net_sd alt lat pir1_mean lon net_max irt1_mean logger_temp base_time filename psp1_min psp1_mean irt1_sd irt1_min irt1_max external_voltage net_min pir1_sd bit_data time_offset twpgndrad60sC2.a1: filename external_voltage net_mean irt1_min psp1_sd logger_temp net_sd psp1_max pir1_sd internal_voltage time_offset lat irt1_max bit_data irt1_sd pir1_mean psp1_min psp1_mean base_time lon irt1_mean net_min pir1_min pir1_max alt net_max twpgndrad20sC2.a1: lat pir1_voltage filename pir1_case_therm time_offset base_time pir1_dome_therm lon alt

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