Data Quality Reports for Session: 101493 User: kjohnson Completed: 09/08/2006


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050601.5TWP/SMET/C2 - Reprocess: Incorrect Units Listed for Vapor Pressuretwpsmet60sC2.b1
D060621.3TWP/MPL/C2 - Detector on instrument failed.twpmplC2.00, twpmplC2.a1
D060621.4TWP/MPL/C2 - Missing datatwpmplC2.00, twpmplC2.a1
D060818.2TWP/SMET/C2 - Reprocess: Barometric Data Changed from hPa to kPatwpsmet60sC2.b1


DQRID : D050601.5
Start DateStart TimeEnd DateEnd Time
07/07/2004000005/19/20052359
Subject:
TWP/SMET/C2 - Reprocess: Incorrect Units Listed for Vapor Pressure
DataStreams:twpsmet60sC2.b1
Description:
The netcdf header file incorrectly listed the units of Vapor Pressure as hPa when in fact 
they were kPa.
Measurements:twpsmet60sC2.b1:
  • Vapor pressure standard deviation(vappress_sd)
  • Vapor pressure mean(vappress_mean)


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DQRID : D060621.3
Start DateStart TimeEnd DateEnd Time
11/12/2004190012/14/20042330
Subject:
TWP/MPL/C2 - Detector on instrument failed.
DataStreams:twpmplC2.00, twpmplC2.a1
Description:
The detector on the MPL failed. The result are zeros for the detector counts data.
Measurements:twpmplC2.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

twpmplC2.a1:
  • Attenuated backscatter(detector_counts)


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DQRID : D060621.4
Start DateStart TimeEnd DateEnd Time
12/14/2004233002/01/20052130
Subject:
TWP/MPL/C2 - Missing data
DataStreams:twpmplC2.00, twpmplC2.a1
Description:
The MPL was turned off due to a dead detector.
Measurements:twpmplC2.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

twpmplC2.a1:
  • Time offset from midnight of date of file. For CO data, this is identical to
    time_offset and is included for compatibility.(time)
  • Laser temperature(laser_temp)
  • Repetition rate, or Trigger Frequency of the laser(trigger_freq)
  • Maximum altitude retrieved from multichannel scalar card.(max_altitude)
  • Sum of raw backscatter counts per bin prior to ANY corrections.(total_counts)
  • Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
  • Angle of inclination with respect to horizontal(transceiver_altitude_angle)
  • Background signal(background_signal)
  • Energy output per pulse of transmitted laser beam at 523 nm (Doubled Nd-YLF)(energy_monitor)
  • Number of laser pulses summed during measurement interval(shots_summed)
  • Angle of orientation with respect to true geographic north(transceiver_azimuth_angle)
  • Voltage level which operates the A/D card and the detector(voltage_05)
  • Amount of time laser pulse lags behind the scalar trigger(laser_scalar_sync_offset)
  • Time offset of tweaks from base_time(time_offset)
  • Voltage level which operates the thermistor(voltage_10)
  • east longitude for all the input platforms.(lon)
  • Time offset from base_time(base_time)
  • north latitude for all the input platforms.(lat)
  • Width of range-bins calculated from range_bin_time(range_bin_width)
  • altitude above sea levelaltunits(alt)
  • required to correct raw counts for detector deadtime prior to all other
    corrections.(deadtime_correction)
  • Amount of time the scalar lags behind the sync trigger(scalar_sync_offset)
  • Distance from leading edge of first range bin to the center of each bin.(range_bins)
  • Aerosol volume backscattering coefficient at 355 nm(backscatter)
  • Preliminary cloud base height above ground level(preliminary_cbh)
  • Number of laser pulses summed during measurement interval(shots_sum)
  • Height of bins above ground level for the temperature, retrieved water vapor,
    and pressure profile(height)
  • Detector temperature(detector_temp)
  • Instrument temperature(instrument_temp)
  • distance to center of range bin after correcting for offset in sync(range)
  • Assumed zero-range bin number\(assumed_zero_range_bin)
  • Attenuated backscatter(detector_counts)
  • Repetition rate, or Trigger Frequency of the laser(pulse_rep)
  • Voltage level which operates the energy monitor(voltage_15)
  • Filter temperature(filter_temp)
  • effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
  • value represents date when configuration is first applicable as YYYYMMDD(property)
  • Amount of time the actual laser pulse lags behind the sync trigger(laser_sync_offset)


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DQRID : D060818.2
Start DateStart TimeEnd DateEnd Time
10/21/1998000007/13/20062232
Subject:
TWP/SMET/C2 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:twpsmet60sC2.b1
Description:
Barometric pressure data was converted from hPa to kPa in order to standardize the 
measurement units among ARM sites and to conform to accepted standard units determined by the 
scientific community.
Measurements:twpsmet60sC2.b1:
  • Atmospheric pressure(atmos_pressure)


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