Abstract

Determining if clouds contain water in the liquid or ice phase is critical for determining how the cloud impacts weather and climate or electromagnetic propagation generally. Cloud phase remote sensing is often done with passively measured radiance ratios or lidar cross-polarization measurements. We summarize our use of passive polarimetric sensing from the ground to determine cloud thermodynamic phase, with lidar cross-polarization detection used as ground truth. This capability is illustrated with an all-sky visible-and-near-infrared polarization imager and a three-spectral-channel short-wave-infrared polarimeter.

© 2020 The Author(s)

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