Data Quality Reports for Session: 117548 User: dmfoper Completed: 02/15/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020613.11TWP/VCEIL/C2 - Installationtwpvceil25kC2.00, twpvceil25kC2.a1, twpvceil25kC2.b1
D041013.2TWP/VCEIL/C1 - Data dropoutstwpvceil25kC1.00, twpvceil25kC1.b1
D990910.1Calibration interruption at TWP Naurutwpvceil25kC2.00, twpvceil25kC2.a1, twpvceil25kC2.b1


DQRID : D020613.11
Start DateStart TimeEnd DateEnd Time
10/28/1998045511/19/19982359
Subject:
TWP/VCEIL/C2 - Installation
DataStreams:twpvceil25kC2.00, twpvceil25kC2.a1, twpvceil25kC2.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:twpvceil25kC2.00:
  • null(Raw data stream - documentation not supported)
twpvceil25kC2.b1:
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Warning and alarm status bits(status_string)
  • Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
  • Vertical visibility(vertical_visibility)
  • 6 character string describing instrument measurement parameters(measurement_parameters)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Third cloud base height(third_cbh)
  • Lowest cloud base height detected.(first_cbh)
  • base time(base_time)
  • range(range)
  • Millivolts at internal ADC input (0 to 2500)(background_light)
  • Time offset of tweaks from base_time(time_offset)
  • lon(lon)
  • Laser temperature(laser_temperature)
  • Altitude of highest signal(alt_highest_signal)
  • Second lowest cloud base height(second_cbh)
  • Degrees from vertical (0 to +90)(tilt_angle)
  • GPS raw data filename(filename)
  • Detection status. See details(detection_status)
  • Flag indicating aeri retrieval status(status_flag)
  • Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
  • Millivolts at internal ADC input(window_contamination)
  • Backscatter sum(sum_backscatter)
twpvceil25kC2.a1:
  • Flag indicating aeri retrieval status(status_flag)
  • Millivolts at internal ADC input (0 to 2500)(background_light)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Degrees from vertical (0 to +90)(tilt_angle)
  • Millivolts at internal ADC input(window_contamination)
  • range(range)
  • lat(lat)
  • Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
  • Detection status. See details(detection_status)
  • 6 character string describing instrument measurement parameters(measurement_parameters)
  • Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
  • GPS raw data filename(filename)
  • lon(lon)
  • base time(base_time)
  • Lowest cloud base height detected.(first_cbh)
  • Laser temperature(laser_temperature)
  • Altitude of highest signal(alt_highest_signal)
  • Backscatter sum(sum_backscatter)
  • Warning and alarm status bits(status_string)
  • Vertical visibility(vertical_visibility)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • Third cloud base height(third_cbh)
  • Second lowest cloud base height(second_cbh)

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DQRID : D041013.2
Start DateStart TimeEnd DateEnd Time
09/29/2004010011/15/20041520
Subject:
TWP/VCEIL/C1 - Data dropouts
DataStreams:twpvceil25kC1.00, twpvceil25kC1.b1
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:twpvceil25kC1.00:
  • null(Raw data stream - documentation not supported)
twpvceil25kC1.b1:
  • lat(lat)
  • Vertical visibility(vertical_visibility)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Laser temperature(laser_temperature)
  • Degrees from vertical (0 to +90)(tilt_angle)
  • base time(base_time)
  • Second lowest cloud base height(second_cbh)
  • 6 character string describing instrument measurement parameters(measurement_parameters)
  • Lowest cloud base height detected.(first_cbh)
  • GPS raw data filename(filename)
  • Backscatter sum(sum_backscatter)
  • Millivolts at internal ADC input(window_contamination)
  • Altitude of highest signal(alt_highest_signal)
  • Millivolts at internal ADC input (0 to 2500)(background_light)
  • range(range)
  • Warning and alarm status bits(status_string)
  • Time offset of tweaks from base_time(time_offset)
  • Flag indicating aeri retrieval status(status_flag)
  • Third cloud base height(third_cbh)
  • Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
  • Dummy altitude for Zeb(alt)
  • lon(lon)
  • Detection status. See details(detection_status)
  • Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)

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DQRID : D990910.1
Start DateStart TimeEnd DateEnd Time
08/10/1999042508/10/19990450
Subject:
Calibration interruption at TWP Nauru
DataStreams:twpvceil25kC2.00, twpvceil25kC2.a1, twpvceil25kC2.b1
Description:
The ceilometer was tipped horizontal for a calibration check
Measurements:twpvceil25kC2.00:
  • null(Raw data stream - documentation not supported)
twpvceil25kC2.b1:
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Warning and alarm status bits(status_string)
  • Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
  • Vertical visibility(vertical_visibility)
  • 6 character string describing instrument measurement parameters(measurement_parameters)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Third cloud base height(third_cbh)
  • Lowest cloud base height detected.(first_cbh)
  • base time(base_time)
  • range(range)
  • Millivolts at internal ADC input (0 to 2500)(background_light)
  • Time offset of tweaks from base_time(time_offset)
  • lon(lon)
  • Laser temperature(laser_temperature)
  • Altitude of highest signal(alt_highest_signal)
  • Second lowest cloud base height(second_cbh)
  • Degrees from vertical (0 to +90)(tilt_angle)
  • GPS raw data filename(filename)
  • Detection status. See details(detection_status)
  • Flag indicating aeri retrieval status(status_flag)
  • Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
  • Millivolts at internal ADC input(window_contamination)
  • Backscatter sum(sum_backscatter)
twpvceil25kC2.a1:
  • Flag indicating aeri retrieval status(status_flag)
  • Millivolts at internal ADC input (0 to 2500)(background_light)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Degrees from vertical (0 to +90)(tilt_angle)
  • Millivolts at internal ADC input(window_contamination)
  • range(range)
  • lat(lat)
  • Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
  • Detection status. See details(detection_status)
  • 6 character string describing instrument measurement parameters(measurement_parameters)
  • Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
  • GPS raw data filename(filename)
  • lon(lon)
  • base time(base_time)
  • Lowest cloud base height detected.(first_cbh)
  • Laser temperature(laser_temperature)
  • Altitude of highest signal(alt_highest_signal)
  • Backscatter sum(sum_backscatter)
  • Warning and alarm status bits(status_string)
  • Vertical visibility(vertical_visibility)
  • Time offset of tweaks from base_time(time_offset)
  • Dummy altitude for Zeb(alt)
  • Third cloud base height(third_cbh)
  • Second lowest cloud base height(second_cbh)

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