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CAS-AIR instrument on airplane wing

CAS-AIR

Cloud and Aerosol Spectrometer aboard aircraft

Baseline Instrument, Guest

The Cloud, Aerosol, and Precipitation Spectrometer (CAPS) is a multipurpose, research-grade cloud spectrometer that includes three Droplet Measurement Technologies instruments plus temperature and relative humidity sensors. The Cloud and Aerosol Spectrometer (CAS) portion of the instrument uses forward and back scattering detection techniques to provide cloud droplet and aerosol sizes and optical properties. The Cloud Imaging Probe (CIP) uses shadow images from a photo-detector array to provide shape and size information for larger aerosol and hydrometeors. The HW sensor uses a platinum RTD wire sensor to detect liquid water content.

  • Susanne Glienke
    Lead Mentor Pacific Northwest National Laboratory

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Atmospheric Radiation Measurement (ARM) | Reviewed October 2024