AWR/MET/M1 - PWD Sensor Not Installed

The PWD was not connected during this period.

• pwd_cumul_rain
• PWD 1 minute mean precipitation rate(pwd_precip_rate_mean_1min)
• pwd_pw_code_15min
• pwd_err_code
• PWD 1 minute mean visibility(pwd_mean_vis_1min)
• PWD 10 minute mean visibility(pwd_mean_vis_10min)
• pwd_pw_code_inst
• pwd_pw_code_1hr
• pwd_cumul_snow

AWR/MET/M1 - Temperature, RH, Vapor Pressure Incorrect

Temperature and vapor pressure were missing and the RH was flatlined below 0.

• vapor_pressure_std
• rh_std
• Temperature mean(temp_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• temp_std

AWR/MET/M1 - PWD Incorrect

The PWD was reporting errors during the setup period and was reporting large amounts of 
precipitation.

• pwd_cumul_rain
• PWD 1 minute mean precipitation rate(pwd_precip_rate_mean_1min)
• pwd_pw_code_15min
• pwd_err_code
• PWD 1 minute mean visibility(pwd_mean_vis_1min)
• PWD 10 minute mean visibility(pwd_mean_vis_10min)
• pwd_pw_code_inst
• pwd_pw_code_1hr
• pwd_cumul_snow

AWR/SONDE/M1 - Suspect Surface Temperature or RH

For the times listed, surface values of either Temperature or Relative Humidity appear to 
be suspect.

• Temperature, dewpoint, at altitude(dp)
• Dry Bulb Temperature(tdry)
• Humidity, relative, on hybrid-b grid, derived from RUC model(rh)

AWR/CCN/M1 - Reprocess: CCN incorrect time

The CCN computer time was ahead by about 3 minutes. See  an attached file 
 for exact numbers. Data quality not affected.

• size_bin
• CCN_T_read_TEC3
• CCN_P_sample
• CCN_temp_unstable_flag
• CCN_laser_current
• CCN_temp_unstable
• CCN_overflow
• CCN_OPC_set
• CCN_proportional_valve_voltage
• CCN_t_read_TEC3
• CCN_first_stage_monitor_voltage
• CCN_T_sample
• CCN_T_nafion
• CCN_super_saturation_calculated
• AOS bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)
• CCN_T_nafion_set
• base_time
• size_bin_bounds
• CCN_T_set_TEC3
• CCN_t_read_TEC1
• CCN_t_read_TEC2
• CCN_supersaturation_set_point
• CCN_Q_sample
• CCN_T_inlet
• CCN_T_set_TEC1
• CCN_T_set_TEC2
• CCN_Q_sheath
• time
• CCN_T_OPC
• Mean number concentration of N_CCN(N_CCN)
• CCN_alarm_code
• CCN_ss_set
• CCN_T_inlet_set
• CCN_temperature_std
• CCN_baseline_monitor
• CCN_temperature_gradient
• CCN_T_read_TEC1
• CCN_T_read_TEC2
• AOS CCN droplet count by bin size(N_CCN_dN)
• time_offset

AWR/LDIS/MET/S1 - Precipitation Measurements Suspect

Analysis of the PARS2 and the PWD precipitation data indicate that the results are 
suspect, possibly due to frost/blowing snow.  Both instruments reported precipitation for a 
majority of the days.

The TSI movies were reviewed and the days of noticeable precipitation are:

12/26/15
12/31/15 - Potentially just frost buildup
1/6/16
1/11/16
1/12/16
1/13/16

• pwd_cumul_snow
• pwd_pw_code_15min
• pwd_cumul_rain
• pwd_err_code
• pwd_pw_code_1hr
• PWD 10 minute mean visibility(pwd_mean_vis_10min)
• pwd_pw_code_inst
• PWD 1 minute mean precipitation rate(pwd_precip_rate_mean_1min)
• PWD 1 minute mean visibility(pwd_mean_vis_1min)

• Number density of drops of the diameter corresponding to a particular drop size
  class per unit volume(number_density_drops)
• Slope parameter, assuming an ideal Marshall-Palmer type distribution(slope_parameter)
• equivalent_radar_reflectivity
• Intercept parameter, assuming an ideal Marshall-Palmer type distribution(intercept_parameter)
• Moment 5 from the observed distribution(moment5)
• Precipitation intensity(precip_rate)
• Moment 6 from the observed distribution(moment6)
• SYNOP WaWa Table 4680(weather_code)
• Moment 1 from the observed distribution(moment1)
• Moment 2 from the observed distribution(moment2)
• Moment 3 from the observed distribution(moment3)
• equivalent_radar_reflectivity_ott
• Moment 4 from the observed distribution(moment4)
• Raw drop size distribution(raw_spectrum)
• Number of particles detected(number_detected_particles)
• diameter_max
• Fall velocity calculated after Lhermite(fall_velocity_calculated)
• Median volume diameter, assuming an ideal Marshall-Palmer type distribution(median_volume_diameter)
• Particle size average(particle_size)
• Liquid water distribution mean, assuming an ideal Marshall-Palmer type
  distribution(liquid_water_distribution_mean)
• diameter_min
• raw_fall_velocity
• Meteorological optical range visibility(mor_visibility)
• Retrieved Liquid Water Content(liquid_water_content)

AWR/MWR/S1 - Incorrect retrievals

The PWV and LWP retrievals are incorrect.

• Total water vapor along LOS path(vap)
• Water, liquid, total along line-of-sight path(liq)

AWR/CCN/M1 - Instrument warming up

Instrument warming up. No valid data.

• size_bin
• CCN_T_read_TEC3
• CCN_P_sample
• CCN_temp_unstable_flag
• CCN_laser_current
• CCN_temp_unstable
• CCN_overflow
• CCN_OPC_set
• CCN_proportional_valve_voltage
• CCN_t_read_TEC3
• CCN_first_stage_monitor_voltage
• CCN_T_sample
• CCN_T_nafion
• CCN_super_saturation_calculated
• AOS bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)
• CCN_T_nafion_set
• CCN_T_set_TEC3
• CCN_t_read_TEC1
• CCN_t_read_TEC2
• CCN_supersaturation_set_point
• CCN_Q_sample
• CCN_T_inlet
• CCN_T_set_TEC1
• CCN_T_set_TEC2
• CCN_Q_sheath
• Mean number concentration of N_CCN(N_CCN)
• CCN_T_OPC
• CCN_alarm_code
• CCN_T_inlet_set
• CCN_ss_set
• CCN_temperature_std
• CCN_baseline_monitor
• CCN_temperature_gradient
• CCN_T_read_TEC1
• CCN_T_read_TEC2
• AOS CCN droplet count by bin size(N_CCN_dN)

AWR/MWR/M1 - Thermal instability

The radiometer had problems maintaining thermal control. The radiometer set point was 
lowered 10 degrees to 318 K on 3/21/2016

• tnd31
• tnd23
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• Water, liquid, total along line-of-sight path(liq)
• qc_tkxc
• qc_tknd
• Total water vapor along LOS path(vap)
• 23.8 GHz sky brightness temperature(tbsky23)

AWR/MWR/M1 - Reprocess: Incorrect retrievals

PWV and LWP retrievals are incorrect. Data will be reprocessed at the end of the 
deployment using coefficients derived from the radiosondes launched at the site.

• Water, liquid, total along line-of-sight path(liq)
• Total water vapor along LOS path(vap)

AWR/MET/M1  - Missing or suspect PWD data due to heavy snow

Heavy snow interfered with the instrument lenses causing backscatter and missing data. 
Data from the present weather detector during this time is suspect or missing.

• pwd_cumul_rain
• PWD 1 minute mean precipitation rate(pwd_precip_rate_mean_1min)
• pwd_pw_code_15min
• PWD 1 minute mean visibility(pwd_mean_vis_1min)
• PWD 10 minute mean visibility(pwd_mean_vis_10min)
• pwd_pw_code_inst
• pwd_pw_code_1hr
• pwd_cumul_snow

AWR/MET/M1 - Probable instrument icing

The temperature and relative humidity sensor behaved suspiciously during this time. 
Temperature and relative humidity readings did not trend inversely, as expected. Ice buildup on 
the instrument is the probable cause.

• Temperature mean(temp_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)

AWR/MWR/M1 - Instrument thermally unstable

The radiometer was thermally unstable.

• tnd31
• tnd23
• tknd
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• tkxc
• Water, liquid, total along line-of-sight path(liq)
• tnd_nom23
• tnd_nom31
• Total water vapor along LOS path(vap)
• 23.8 GHz sky brightness temperature(tbsky23)

AWR/MWR/M1 - Thermal instability

The radiometer was thermally unstable.

• tnd31
• tnd23
• tknd
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• tkxc
• Water, liquid, total along line-of-sight path(liq)
• tnd_nom23
• tnd_nom31
• Total water vapor along LOS path(vap)
• 23.8 GHz sky brightness temperature(tbsky23)

AWR/CCN/CPC/M1 - Concentration difference

Various tests performed to understand why the CCN counts sometimes exceed those of a 
co-located CPC. Instrument functioning normally, but occasionally sampling cabin air during 
this period or running with internal flow lines opened for flow measurements.

• size_bin
• CCN_T_read_TEC3
• CCN_P_sample
• CCN_temp_unstable_flag
• CCN_laser_current
• CCN_temp_unstable
• CCN_overflow
• CCN_OPC_set
• CCN_proportional_valve_voltage
• CCN_t_read_TEC3
• CCN_first_stage_monitor_voltage
• CCN_T_sample
• CCN_T_nafion
• CCN_super_saturation_calculated
• AOS bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)
• CCN_T_nafion_set
• CCN_T_set_TEC3
• CCN_t_read_TEC1
• CCN_t_read_TEC2
• CCN_supersaturation_set_point
• CCN_Q_sample
• CCN_T_inlet
• CCN_T_set_TEC1
• CCN_T_set_TEC2
• CCN_Q_sheath
• Mean number concentration of N_CCN(N_CCN)
• CCN_T_OPC
• CCN_alarm_code
• CCN_T_inlet_set
• CCN_ss_set
• CCN_temperature_std
• CCN_baseline_monitor
• CCN_temperature_gradient
• CCN_T_read_TEC1
• CCN_T_read_TEC2
• AOS CCN droplet count by bin size(N_CCN_dN)

AWR/MWR/M1 -Reprocess: Incorrect calibration

After the temperature set point was changed the calibration changed. New calibration 
coefficients were derived on 8/11.

• tnd31
• tnd23
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• Water, liquid, total along line-of-sight path(liq)
• tnd_nom23
• tnd_nom31
• Total water vapor along LOS path(vap)
• 23.8 GHz sky brightness temperature(tbsky23)

AWR/CEIL/M1 - Window contamination

The blower failed allowing contamination of the window. The blower was replaced.

• background_light
• sum_backscatter
• Cloud, base height, second lowest base sensed(second_cbh)
• Cloud, base height, lowest base sensed(first_cbh)
• vertical_visibility
• alt_highest_signal
• Backscatter, ceilometer, range and sensitivity corrected(backscatter)
• Third cloud base height(third_cbh)

AWR/CEIL/S1 - Reprocess: Incorrect averaging_inverval global attribute

When the ceilometer software was changed from CT-View to CL-View, several firmware 
configuration changes were made to the model CT25K for consistency with the CL31 at other sites, 
including the data acquisition interval which was changed from 15 to 16 seconds. 
However, the global attribute "averaging_interval" in the ceil datastream was not changed.

• base_time

AWR/MWR/M1 - Missing data

Data are missing

• wet_window
• qc_sky23
• qc_tbsky31
• Altitude above mean sea level(alt)
• tkxc
• Total water vapor along LOS path(vap)
• bbn31
• tknd
• tnd23
• qc_bb23
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• time_offset
• bb23
• tc31
• tnd_nom23
• qc_bbn31
• sky23
• qc_tkbb
• qc_tkair
• qc_time
• bbn23
• time
• qc_sky31
• qc_tbsky23
• base_time
• tkair
• qc_vap
• Water, liquid, total along line-of-sight path(liq)
• tnd_nom31
• East longitude(lon)
• North latitude(lat)
• tnd31
• qc_bb31
• bb31
• qc_bbn23
• tkbb
• qc_tkxc
• tc23
• qc_liq
• qc_tknd
• sky31
• 23.8 GHz sky brightness temperature(tbsky23)

AWR/MPLCMASK/M1 - Reprocess: Software Error

The MPLCMASK VAP was expecting the MPL to be covered around local solar noon. As a result, 
the algorithm intermittently set much of the data to -9999 during this time period after 
the site transitioned to total darkness during the winter months. During the peak of 
this problem, the impacted fields were set to -9999 from approximately 0:00-2:19 UTC each day.

This information is being provided in a transparent DQR due to the intermittent nature of 
the problem and the fact that the impacted data are already set to -9999 and flagged by 
the automated quality control variables in the VAP. 

A future reprocessing task will correct this problem.

• Lowest cloud base height above ground level (AGL)(cloud_base)
• backscatter_snr
• linear_depol_snr
• cloud_top_attenuation_flag
• Satellite-measured cloud top(cloud_top)
• cloud_top_layer
• cloud_base_layer
• num_cloud_layers
• linear_depol_ratio
• Backscatter, ceilometer, range and sensitivity corrected(backscatter)
• shots_summed
• Cloud mask(cloud_mask)