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.
CAS-AIR
cas-air > Cloud and Aerosol Spectrometer aboard aircraftInstrument Type(s) > Baseline • Guest
Measurements
Locations
- Fixed
- AMF1
- AMF2
- AMF3
Related Publications
2020
Chiu J, C Yang, P van Leeuwen, G Feingold, R Wood, Y Blanchard, F Mei, and J Wang. 2020. "Observational constraints on warm cloud microphysical processes using machine learning and optimization techniques." Geophysical Research Letters, 48(2), e2020GL091236, 10.1029/2020GL091236.
Research Highlight
Matthews A and LA Goldberger. 2020. Multi-Element Water Content System Instrument Handbook. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-TR-261.
Kleinman L, A Sedlacek III, K Adachi, P Buseck, S Collier, M Dubey, A Hodshire, E Lewis, T Onasch, J Pierce, J Shilling, S Springston, J Wang, Q Zhang, S Zhou, and R Yokelson. 2020. "Rapid evolution of aerosol particles and their optical properties downwind of wildfires in the western US." Atmospheric Chemistry and Physics, 20(21), 10.5194/acp-20-13319-2020.
Goldberger L. 2020. Cloud, Aerosol, and Precipitation Spectrometer Instrument Handbook. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-TR-246.
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