Atmospheric Radiation Measurement Climate Research Facility US Department of Energy

pcasp-air > Passive cavity aerosol spectrometer aboard aircraftInstrument Type(s) > Baseline • Guest

The passive cavity aerosol spectrometer (PCASP) is an airborne, optical spectrometer that uses the intensity of scattered laser light to measure an aerosol size distribution from 0.1 – 3.0 µm.


  • Fixed
  • AMF1
  • AMF2
  • AMF3


Zheng X, X Dong, D Ward, B Xi, P Wu, and Y Wang. 2022. "Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud." Advances in Atmospheric Sciences, 39, 10.1007/s00376-022-2013-6.

Tang S, J Fast, K Zhang, J Hardin, A Varble, J Shilling, F Mei, M Zawadowicz, and P Ma. 2022. "Earth System Model Aerosol–Cloud Diagnostics (ESMAC Diags) package, version 1: assessing E3SM aerosol predictions using aircraft, ship, and surface measurements." Geoscientific Model Development, 15(10), 10.5194/gmd-15-4055-2022.
Research Highlight

Lin Y, J Fan, P DeMott, L Goldberger, J Comstock, Y Liu, J Jeong, and J Tomlinson. 2022. "Modeling impacts of ice-nucleating particles from marine aerosols on mixed-phase orographic clouds during 2015 ACAPEX field campaign." Atmospheric Chemistry and Physics, 22(10), 10.5194/acp-22-6749-2022.
Research Highlight

Pekour MS and M Newburn. 2022. Aerosol Inlets for a Mid-Sized Uncrewed Aerial System (UAS). Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-TR-277. 10.2172/1863934.

Wang H, Y Peng, K von Salzen, Y Yang, W Zhou, and D Zhao. 2022. "Evaluation of a quasi-steady-state approximation of the cloud droplet growth equation (QDGE) scheme for aerosol activation in global models using multiple aircraft data over both continental and marine environments." Geoscientific Model Development, 15(7), 10.5194/gmd-15-2949-2022.

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