DQRs for Session: 133274 User:dmfoperCompleted: 02-16-2011

Data Quality Reports for Session: 133274 User: dmfoper Completed: 02/16/2011

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D070407.1	TWP/MPL/C3 - False cloud detection at 15-20km	twpmplpolC3.b1, twpmplpolavgC3.c1, twpmplpolavgC3.s1, twpmplsmask1clothC3.c1
D090217.1	TWP/MPL/C2 - Laser transmitter off	twpmplpolC2.b1, twpmplpolavgC2.c1, twpmplpolavgC2.s1

DQRID : D070407.1

Start Date	Start Time	End Date	End Time
12/01/2006	0000	05/15/2007	0100

Subject:	TWP/MPL/C3 - False cloud detection at 15-20km
DataStreams:	twpmplpolC3.b1, twpmplpolavgC3.c1, twpmplpolavgC3.s1, twpmplsmask1clothC3.c1
Description:	During the period specified, clouds were sometimes incorrectly detected at 15-20km. These artifacts were seen as quasi-stationary layers that were clearly not atmospheric in origin. A replacement instrument was installed in May 2007 to correct the problem.
Measurements:	twpmplpolavgC3.s1: Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol) Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol) Attenuated backscatter, copol(signal_return_co_pol) Attenuated backscatter, cross pol(signal_return_cross_pol) twpmplpolavgC3.c1: Attenuated backscatter, cross pol(signal_return_cross_pol) Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol) Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol) Attenuated backscatter, copol(signal_return_co_pol) twpmplsmask1clothC3.c1: Heights twpmplpolC3.b1: signal_return Preliminary cloud base height above ground level(preliminary_cbh)

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DQRID : D090217.1

Start Date	Start Time	End Date	End Time
11/10/2008	0000	11/18/2008	1700

Subject:	TWP/MPL/C2 - Laser transmitter off
DataStreams:	twpmplpolC2.b1, twpmplpolavgC2.c1, twpmplpolavgC2.s1
Description:	The laser diode power supply was inadvertantly turned off by the operators. Upon correct restarting sequence, system returned to normal.
Measurements:	twpmplpolavgC2.s1: aqc_signal_return_cross_pol num_bins lat Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol) range_offset Attenuated backscatter, copol(signal_return_co_pol) range background_signal_cross_pol Pressure, associated geometric height, at altitude, NGM model output(height) shots_per_sample laser_temp time nsamples_co_pol_average scope_temp range_bins polarization_control_voltage_co_pol aqc_signal_return_co_pol time_offset base_time Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol) detector_temp num_channels background_signal_co_pol polarization_control_voltage_cross_pol pulse_rep alt background_signal_std_co_pol Attenuated backscatter, cross pol(signal_return_cross_pol) lon energy_monitor nsamples_cross_pol_average range_bin_width max_altitude dead_time_corrected background_signal_std_cross_pol twpmplpolavgC2.c1: time_offset max_altitude aqc_signal_return_cross_pol Attenuated backscatter, cross pol(signal_return_cross_pol) polarization_control_voltage_cross_pol num_channels range background_signal_cross_pol Attenuated backscatter, copol(signal_return_co_pol) Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol) laser_temp lon detector_temp scope_temp base_time Pressure, associated geometric height, at altitude, NGM model output(height) shots_per_sample range_bin_width background_signal_std_co_pol background_signal_std_cross_pol dead_time_corrected polarization_control_voltage_co_pol range_offset alt nsamples_cross_pol_average energy_monitor range_bins pulse_rep num_bins time background_signal_co_pol nsamples_co_pol_average Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol) aqc_signal_return_co_pol lat twpmplpolC2.b1: lon detector_temp polarization_control range_bin_time max_altitude scope_temp Pressure, associated geometric height, at altitude, NGM model output(height) background_signal_std base_time signal_return shots_per_avg background_signal range_bins time range_bin_width time_offset dead_time_corrected num_channels num_bins laser_temp lat range polarization_control_voltage energy_monitor pulse_rep range_offset alt Preliminary cloud base height above ground level(preliminary_cbh)

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