DQRs for Session: 150486 User:dzermenoCompleted: 05-30-2013

Data Quality Reports for Session: 150486 User: dzermeno Completed: 05/30/2013

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D000504.4	TWP/VCEIL/C1 - Ceilometer offset	twpvceil25kC1.b1
D000602.2	TWP/VCEIL/C1 - Ceilometer clock drift	twpvceil25kC1.a1, twpvceil25kC1.b1, twpvceil25kC1.00
D000718.7	TWP/VCEIL/C1 - Extended data gap	twpvceil25kC1.b1, twpvceil25kC1.a1
D000718.8	TWP/VCEIL/C1 - Extended data gap	twpvceil25kC1.b1, twpvceil25kC1.a1
D000718.9	TWP/VCEIL/C1 - Extended data gap	twpvceil25kC1.b1, twpvceil25kC1.a1
D000719.1	TWP/C1 - Generator Problem	twpsondewnpnC1.a0, twpmfrsrC1.a0, twpsondewnpnC1.a1, twpmfrsrC1.b1, twpvceil25kC1.a1, twpvceil25kC1.b1
D000927.2	TWP/VCEIL/C1 - Degraded Ceilometer Window	twpvceil25kC1.a1, twpvceil25kC1.b1
D010222.1	TWP/VCEIL/C1 - Receiver Problem	twpvceil25kC1.a1, twpvceil25kC1.b1
D020207.1	TWP/VCEIL/C1 - Manus Ceilometer Laser Power Intermittent	twpvceil25kC1.a1, twpvceil25kC1.b1
D020207.2	TWP/VCEIL/C1 - Reprocess: Incorrect units on installed ceilometer	twpvceil25kC1.a1, twpvceil25kC1.b1
D020620.64	TWP/C1 - Incorrect elevation reported in Manus Data	twpmplC1.a1, twpvceil25kC1.a1, twpvceil25kC1.b1
D041013.2	TWP/VCEIL/C1 - Data dropouts	twpvceil25kC1.b1, twpvceil25kC1.00
D100215.4	TWP/VCEIL/C1 - Reprocess: Incorrect serial_number and sum_backscatter fields	twpvceil25kC1.b1
D110318.2	TWP/VCEIL/C1 - Missing data	twpvceil25kC1.b1

DQRID : D000504.4

Start Date	Start Time	End Date	End Time
01/28/2000	0200	03/28/2000	0000

Subject:	TWP/VCEIL/C1 - Ceilometer offset
DataStreams:	twpvceil25kC1.b1
Description:	When the replacement ceilometer was installed at Manus it was tilted 6 degrees. Since the angle correction setting was not activated, the cloud base heights reported by the instrument were higher than actual by 0.55% (39 m at 7 km).
Measurements:	twpvceil25kC1.b1: Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) Third cloud base height(third_cbh)

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DQRID : D000602.2

Start Date	Start Time	End Date	End Time
04/19/1998	0000	08/22/1998	0000

Subject:	TWP/VCEIL/C1 - Ceilometer clock drift
DataStreams:	twpvceil25kC1.a1, twpvceil25kC1.b1, twpvceil25kC1.00
Description:	During this period the ceilometer was using a software version that provided time stamps that were based on the ceilometer clock and not the computer clock that was continually sychronized with GPS. This lead to times that were erroneous by as much as 2 minutes. For most applications 2 minutes is an acceptable error, but for some applications this may be a problem.
Measurements:	twpvceil25kC1.a1: laser_temperature lon Normalized corrected relative backscatter(backscatter) sum_backscatter measurement_parameters base_time vertical_visibility alt_highest_signal status_flag window_contamination tilt_angle alt lat Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) receiver_sensitivity Third cloud base height(third_cbh) laser_pulse_energy range filename status_string detection_status background_light time_offset twpvceil25kC1.b1: Lowest cloud base height detected.(first_cbh) alt laser_pulse_energy Second lowest cloud base height(second_cbh) alt_highest_signal time_offset tilt_angle receiver_sensitivity filename vertical_visibility measurement_parameters status_string Normalized corrected relative backscatter(backscatter) background_light sum_backscatter lon status_flag window_contamination detection_status range laser_temperature lat Third cloud base height(third_cbh) base_time twpvceil25kC1.00: Raw data stream - documentation not supported

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DQRID : D000718.7

Start Date	Start Time	End Date	End Time
12/11/1996	0000	02/17/1997	0000

Subject:	TWP/VCEIL/C1 - Extended data gap
DataStreams:	twpvceil25kC1.b1, twpvceil25kC1.a1
Description:	There is no ceilometer data for this period.
Measurements:	twpvceil25kC1.a1: Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) laser_temperature lon receiver_sensitivity Normalized corrected relative backscatter(backscatter) Third cloud base height(third_cbh) laser_pulse_energy sum_backscatter measurement_parameters base_time range filename vertical_visibility alt_highest_signal status_string status_flag window_contamination tilt_angle alt detection_status background_light time_offset lat twpvceil25kC1.b1: sum_backscatter Lowest cloud base height detected.(first_cbh) lon status_flag window_contamination laser_pulse_energy alt Second lowest cloud base height(second_cbh) alt_highest_signal time_offset detection_status tilt_angle receiver_sensitivity filename vertical_visibility measurement_parameters range laser_temperature lat status_string Third cloud base height(third_cbh) Normalized corrected relative backscatter(backscatter) background_light base_time

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DQRID : D000718.8

Start Date	Start Time	End Date	End Time
03/05/1997	1558	04/06/1997	0000

Subject:	TWP/VCEIL/C1 - Extended data gap
DataStreams:	twpvceil25kC1.b1, twpvceil25kC1.a1
Description:	There is no ceilometer data for this period.
Measurements:	twpvceil25kC1.a1: Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) laser_temperature lon receiver_sensitivity Normalized corrected relative backscatter(backscatter) Third cloud base height(third_cbh) laser_pulse_energy sum_backscatter measurement_parameters base_time range filename vertical_visibility alt_highest_signal status_string status_flag window_contamination tilt_angle alt detection_status background_light time_offset lat twpvceil25kC1.b1: sum_backscatter Lowest cloud base height detected.(first_cbh) lon status_flag window_contamination laser_pulse_energy alt Second lowest cloud base height(second_cbh) alt_highest_signal time_offset detection_status tilt_angle receiver_sensitivity filename vertical_visibility measurement_parameters range laser_temperature lat status_string Third cloud base height(third_cbh) Normalized corrected relative backscatter(backscatter) background_light base_time

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DQRID : D000718.9

Start Date	Start Time	End Date	End Time
02/02/1998	2058	04/19/1998	0700

Subject:	TWP/VCEIL/C1 - Extended data gap
DataStreams:	twpvceil25kC1.b1, twpvceil25kC1.a1
Description:	There is no ceilometer data for this period.
Measurements:	twpvceil25kC1.a1: Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) laser_temperature lon receiver_sensitivity Normalized corrected relative backscatter(backscatter) Third cloud base height(third_cbh) laser_pulse_energy sum_backscatter measurement_parameters base_time range filename vertical_visibility alt_highest_signal status_string status_flag window_contamination tilt_angle alt detection_status background_light time_offset lat twpvceil25kC1.b1: sum_backscatter Lowest cloud base height detected.(first_cbh) lon status_flag window_contamination laser_pulse_energy alt Second lowest cloud base height(second_cbh) alt_highest_signal time_offset detection_status tilt_angle receiver_sensitivity filename vertical_visibility measurement_parameters range laser_temperature lat status_string Third cloud base height(third_cbh) Normalized corrected relative backscatter(backscatter) background_light base_time

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DQRID : D000719.1

Start Date	Start Time	End Date	End Time
11/20/1998	0000	11/27/1998	0000

Subject:	TWP/C1 - Generator Problem
DataStreams:	twpsondewnpnC1.a0, twpmfrsrC1.a0, twpsondewnpnC1.a1, twpmfrsrC1.b1, twpvceil25kC1.a1, twpvceil25kC1.b1
Description:	On November 18 the generator was turned off due to a fault in the oil pressure sensor. It had been having trouble for at least a day prior to the manual shut-down. ADaM, the MPL, and the WSI were also shut down to prevent an unscheduled power cycle. As a result, there is a block of missing data from November 20-27 for all of the instruments except those connected to the Zeno loggers (SKYRAD, GNDRAD, SMET).
Measurements:	twpsondewnpnC1.a0: Wind Direction(deg) asc Mean Wind Speed(wspd) Humidity, relative(rh) Dry Bulb Temperature(tdry) lon base_time wstat lat Dewpoint Temperature(dp) Pressure, atmospheric, constant value of model level, RUC model output(pres) time_offset alt twpsondewnpnC1.a1: Pressure, atmospheric, constant value of model level, RUC model output(pres) wstat asc lon Dry Bulb Temperature(tdry) Humidity, relative(rh) Eastward Wind Component(u_wind) Mean Wind Speed(wspd) base_time Northward Wind Component(v_wind) Dewpoint Temperature(dp) time_offset alt Wind Direction(deg) lat twpvceil25kC1.a1: laser_temperature Normalized corrected relative backscatter(backscatter) lon measurement_parameters base_time alt_highest_signal vertical_visibility alt lat Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) receiver_sensitivity Third cloud base height(third_cbh) range detection_status background_light time_offset sum_backscatter status_flag window_contamination tilt_angle laser_pulse_energy filename status_string twpvceil25kC1.b1: laser_pulse_energy Second lowest cloud base height(second_cbh) time_offset receiver_sensitivity vertical_visibility filename measurement_parameters status_string background_light sum_backscatter lon status_flag detection_status range laser_temperature Third cloud base height(third_cbh) Lowest cloud base height detected.(first_cbh) alt alt_highest_signal tilt_angle Normalized corrected relative backscatter(backscatter) window_contamination lat base_time twpmfrsrC1.b1: logger_volt lon alt diffuse_hemisp_broadband base_time cosine_solar_zenith_angle lat Direct Normal Broadband Irradiance(direct_norm_broadband) time_offset callang_flags hemisp_narrowband diffuse_hemisp_narrowband total_hemisp_broadband mfrsr_temp Direct Normal Irradiance, NIMFR(direct_norm_narrowband) twpmfrsrC1.a0: lat dif6 dif5 dif7 dif2 dif1 dif4 dif3 supply_voltage base_time detector_temp alt time_offset tot3 tot4 lon tot1 tot2 tot7 tot5 tot6 dirn4 dirn3 dirn2 dirn1 dirn7 dirn6 dirn5

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DQRID : D000927.2

Start Date	Start Time	End Date	End Time
10/28/1999	0000	01/28/2000	0000

Subject:	TWP/VCEIL/C1 - Degraded Ceilometer Window
DataStreams:	twpvceil25kC1.a1, twpvceil25kC1.b1
Description:	Data from the ceilometer during this period is suspect. From 10/28 until about 2/4 the instrument had a deteriorated window. This caused the ceilometer to only be able to see cloud heights up to about 2 km.
Measurements:	twpvceil25kC1.a1: Third cloud base height(third_cbh) Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) Normalized corrected relative backscatter(backscatter) twpvceil25kC1.b1: Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) Third cloud base height(third_cbh) Normalized corrected relative backscatter(backscatter)

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DQRID : D010222.1

Start Date	Start Time	End Date	End Time
11/12/2000	0000	02/09/2001	0000

Subject:	TWP/VCEIL/C1 - Receiver Problem
DataStreams:	twpvceil25kC1.a1, twpvceil25kC1.b1
Description:	The Manus ceilometer had degraded cloud base height due to a receiver problem
Measurements:	twpvceil25kC1.a1: Third cloud base height(third_cbh) Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) Normalized corrected relative backscatter(backscatter) twpvceil25kC1.b1: Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) Third cloud base height(third_cbh) Normalized corrected relative backscatter(backscatter)

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DQRID : D020207.1

Start Date	Start Time	End Date	End Time
11/22/2001	0000	01/18/2002	0500

Subject:	TWP/VCEIL/C1 - Manus Ceilometer Laser Power Intermittent
DataStreams:	twpvceil25kC1.a1, twpvceil25kC1.b1
Description:	Very few cloud heights reported due to bad laser transmitter. Replaced ceilometer 05:00 GMT 18 Jan. 2002.
Measurements:	twpvceil25kC1.a1: Third cloud base height(third_cbh) Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) Normalized corrected relative backscatter(backscatter) twpvceil25kC1.b1: Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) Third cloud base height(third_cbh) Normalized corrected relative backscatter(backscatter)

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DQRID : D020207.2

Start Date	Start Time	End Date	End Time
01/18/2002	0500	02/08/2002	0400

Subject:	TWP/VCEIL/C1 - Reprocess: Incorrect units on installed ceilometer
DataStreams:	twpvceil25kC1.a1, twpvceil25kC1.b1
Description:	The units setting on the ceilometer installed on 18 Jan. 2002 were incorrectly set to feet rather than meters.
Measurements:	twpvceil25kC1.a1: Third cloud base height(third_cbh) Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) Normalized corrected relative backscatter(backscatter) twpvceil25kC1.b1: Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) Third cloud base height(third_cbh) Normalized corrected relative backscatter(backscatter)

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DQRID : D020620.64

Start Date	Start Time	End Date	End Time
10/11/1996	0801	06/22/2000	2359

Subject:	TWP/C1 - Incorrect elevation reported in Manus Data
DataStreams:	twpmplC1.a1, twpvceil25kC1.a1, twpvceil25kC1.b1
Description:	Bill Clements reports 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:	twpvceil25kC1.a1: alt twpvceil25kC1.b1: alt twpmplC1.a1: alt

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DQRID : D041013.2

Start Date	Start Time	End Date	End Time
09/29/2004	0100	11/15/2004	1520

Subject:	TWP/VCEIL/C1 - Data dropouts
DataStreams:	twpvceil25kC1.b1, twpvceil25kC1.00
Description:	The Manus ceilometer was not receiving complete data packs from the ceilometer. This occurred at irregular intervals up to 3-10 times per hour until an error occurred and the computer locked up. The data were not affected when they were successfully collected. Days on which the data are missing for more than 1 hour are listed below. Some maintenance was done on the ceilometer data computer in November and the computer was ultimately replace on 3 January 2005. year.month.day 2004.09.29 2004.10.03 2004.10.04 2004.10.07 2004.10.10 2004.10.11 2004.10.12 2004.10.13 2004.10.14 2004.10.17 2004.10.18 2004.10.22 2004.10.25 2004.10.26 2004.10.27 2004.10.28 2004.10.29 2004.10.30 2004.11.15
Measurements:	twpvceil25kC1.b1: sum_backscatter Lowest cloud base height detected.(first_cbh) lon status_flag window_contamination laser_pulse_energy alt Second lowest cloud base height(second_cbh) alt_highest_signal time_offset detection_status tilt_angle receiver_sensitivity filename vertical_visibility measurement_parameters range laser_temperature lat status_string Third cloud base height(third_cbh) base_time background_light Normalized corrected relative backscatter(backscatter) twpvceil25kC1.00: Raw data stream - documentation not supported

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DQRID : D100215.4

Start Date	Start Time	End Date	End Time
10/11/1996	0000	10/31/2009	2359

Subject:	TWP/VCEIL/C1 - Reprocess: Incorrect serial_number and sum_backscatter fields
DataStreams:	twpvceil25kC1.b1
Description:	Attribute serial_number: In most cases, this field is not representative of the actual serial number of the instrument because the value did not change when an instrument changed locations or was replaced with a spare. Variable sum_backscatter: An out-of-range condition for the "sum of detected and normalized backscatter" was reported as 0 instead of missing (-9999). The valid range is 0 - 0.0999 /srad. This DQR also applies to a1 level data.
Measurements:	twpvceil25kC1.b1: sum_backscatter

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DQRID : D110318.2

Start Date	Start Time	End Date	End Time
12/07/1996	0900	02/18/1997	0340
03/05/1997	1600	04/07/1997	0009
10/01/1999	0900	10/17/1999	2359
01/14/2000	0800	01/27/2000	2334
11/28/2001	0400	12/03/2001	0552
01/07/2003	0706	01/16/2003	0156
04/30/2003	2300	05/02/2003	0710
12/24/2010	1613	01/10/2011	0441
03/16/2011	1229	03/18/2011	1607
05/14/2011	0600	05/25/2011	0150
07/16/2011	2200	08/03/2011	0026
05/28/1998	0000	05/29/1998	2359
11/01/1998	2200	11/03/1998	2021
11/20/1998	0200	11/27/1998	1010
09/03/1999	0300	09/07/1999	0900
04/15/1997	0100	04/18/1997	0513
04/24/1997	2300	04/26/1997	0034
04/29/1997	2200	05/02/1997	2359
05/06/1997	0100	05/10/1997	1952
06/04/1997	0600	06/11/1997	1030
06/13/1997	1200	06/15/1997	0333
07/02/1997	1000	07/16/1997	1200
09/08/1997	0200	09/10/1997	2020
01/05/1998	0200	01/08/1998	2047
02/21/1998	2100	04/19/1998	0647
11/29/1996	0100	11/30/1996	2359
11/14/1996	0900	11/19/1996	2359

Subject:	TWP/VCEIL/C1 - Missing data
DataStreams:	twpvceil25kC1.b1
Description:	Data are missing and unrecoverable.
Measurements:	twpvceil25kC1.b1: Second lowest cloud base height(second_cbh) alt_highest_signal time_offset detection_status tilt_angle sum_backscatter Lowest cloud base height detected.(first_cbh) receiver_sensitivity lon status_flag filename vertical_visibility measurement_parameters range window_contamination laser_temperature lat laser_pulse_energy alt status_string Third cloud base height(third_cbh) base_time Normalized corrected relative backscatter(backscatter) background_light

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