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NCAR/RAF Aerosol and Cloud Particle
Instrumentation for DYCOMS-II
Investigator meeting
15-Feb-2001
Jeffco
Outline• PMS probes - size ranges & data rates
• Calibration & maintenance plans1 - before field deployment2 - at field site3 - after returning to Jeffco
• Analysis software ncplot, ncpp & xpms2d
– available to investigators
• Solicit questions and suggestions
DYCOMS-IIParticle Probe Locations
aerosol sampling with instruments inside aircraft
CVI CCN CN RDMA + other
Probe Calibrations
Probes will be calibrated for size using standard reference particles
refractive index of PSL 1.59, glass beads 1.56, water 1.33
Particle Probe Maintenance Plan
• Jeffco - before and after field project– Optical cleaning & alignment– Electronic baselines– Electronic response times– Calibration particles - full size range (5+ sizes)
• On-site checks as needed– Point checks between flights
easy on King Air not so easy on C-130,
especially at field sites
RAF Analysis Software (Chris Webster)
• ncplot – time plots, xy, xyz, spectral
• ncpp – PMS probe size distributions
• xpms2d – Two-D probe image display
• available to investigators ask Chris for a demo