DQRs for Session: 147298 User:bsyin1Completed: 01-23-2013

Data Quality Reports for Session: 147298 User: bsyin1 Completed: 01/23/2013

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D020509.1	NSA/C2/VCEIL - Occasional Data Transmission Problems	nsavceil25kC2.a1, nsavceil25kC2.b1, nsavceil25kC2.00
D100215.3	NSA/VCEIL/C1/C2 - Reprocess: Incorrect serial_number and sum_backscatter fields	nsavceil25kC1.b1, nsavceil25kC2.b1

DQRID : D020509.1

Start Date	Start Time	End Date	End Time
11/07/2001	0000	01/27/2002	0000

Subject:	NSA/C2/VCEIL - Occasional Data Transmission Problems
DataStreams:	nsavceil25kC2.a1, nsavceil25kC2.b1, nsavceil25kC2.00
Description:	A combination of problems lead to occasional short period loss (usually lesss than 2 minutes) of data for ceilometer during this period.
Measurements:	nsavceil25kC2.b1: detection_status laser_pulse_energy Backscatter(backscatter) status_string sum_backscatter status_flag receiver_sensitivity range measurement_parameters alt laser_temperature Third cloud base height(third_cbh) base_time Second lowest cloud base height(second_cbh) background_light lat vertical_visibility window_contamination alt_highest_signal tilt_angle Lowest cloud base height detected.(first_cbh) time_offset lon nsavceil25kC2.a1: tilt_angle status_flag Third cloud base height(third_cbh) laser_pulse_energy window_contamination time_offset receiver_sensitivity alt Second lowest cloud base height(second_cbh) Backscatter(backscatter) Lowest cloud base height detected.(first_cbh) laser_temperature lat detection_status status_string vertical_visibility background_light sum_backscatter range base_time measurement_parameters lon alt_highest_signal nsavceil25kC2.00: Raw data stream - documentation not supported

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DQRID : D100215.3

Start Date	Start Time	End Date	End Time
08/22/1999	0000	10/31/2009	2359

Subject:	NSA/VCEIL/C1/C2 - Reprocess: Incorrect serial_number and sum_backscatter fields
DataStreams:	nsavceil25kC1.b1, nsavceil25kC2.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 and b1 level data collected prior to the begin date.
Measurements:	nsavceil25kC2.b1: sum_backscatter nsavceil25kC1.b1: sum_backscatter

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