DQRID : D141017.5
Start DateStart TimeEnd DateEnd Time
11/30/2012000006/11/20132359
more
Subject:
SGP/CCN/C1 - Incorrect supersaturation stepping method
DataStreams:sgpaosccnavgC1.c1, sgpaosccnavgC1.c2
Description:
The supersaturation stepping method over this period is not consistent with the ccnavg VAP 
expectations. Therefore, the averaging of the fields done by the CCNAVG VAP are 
incorrect - the output of the CCNAVG VAP for all fields is bad over this entire period.
Suggestions: 
Do not use data.
Measurements:sgpaosccnavgC1.c2:
  • Size bins for CCN droplet count(droplet_size)
  • Sample supersaturation calculated via Lance/Rose method(supersaturation_calculated)
  • Gradient between column top and bottom temperature settings(column_temperature_gradient_setting)
  • Standard deviation of Condensation Particle Concentration Number(N_CPC_std)
  • Standard deviation of measured temperature difference between top and bottom of
    column(column_temperature_gradient_measured_std)
  • AOS CCN number concentration by bin(N_CCN_dN)
  • Cloud condensation nuclei number density(N_CCN)
  • Standard deviation of number concentration of CCN(N_CCN_std)
  • Supersaturation set point(supersaturation_setpoint)
  • Measured temperature difference between top and bottom of column(column_temperature_gradient_measured)
  • Condensation particle concentration number(N_CPC)
more
sgpaosccnavgC1.c1:
  • Standard deviation of measured temperature difference between top and bottom of
    column(column_temperature_gradient_measured_std)
  • Standard deviation of number concentration of CCN(N_CCN_std)
  • AOS CCN number concentration by bin(N_CCN_dN)
  • Standard deviation of Condensation Particle Concentration Number(N_CPC_std)
  • Gradient between column top and bottom temperature settings(column_temperature_gradient_setting)
  • Measured temperature difference between top and bottom of column(column_temperature_gradient_measured)
  • Supersaturation set point(supersaturation_setpoint)
  • Cloud condensation nuclei number density(N_CCN)
  • Sample supersaturation calculated via Lance/Rose method(supersaturation_calculated)
  • Condensation particle concentration number(N_CPC)
  • Size bins for CCN droplet count(droplet_size)
more

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