NCAR Airborne Instrumentation Information NCAR Airborne Instrumentation Inventory 1. Can also be used to measure size distribution and chemical composition of residual nuclei, as well as volatile gases besides water vapor. Non-volatile residual particles and volatile gases are measured downstream. Surface to 200 mb. Inlet must be special counterflow design and temperature controlled.
Newest design has flow-straightening shroud.
Requires some hands-on operation, depending on complexity of project and measurements. Complete processing is time consuming, due to varying Lyman-alpha baseline and other factors. Droplets larger than a few hundred microns diameter may shatter upon collection. Enhancement or shadowing of some particle sizes can occur, depending on fuselage location. Alternative Techniques PMS optical probes.