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An airborne 95 GHz dual-polarized radar for cloud studies

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4 Author(s)
A. L. Pazmany ; Microwave Remote Sensing Lab., Massachusetts Univ., Amherst, MA, USA ; R. E. McIntosh ; R. D. Kelly ; G. Vali

A 95 GHz dual-polarization radar system was developed and flown on the University of Wyoming King Air research aircraft, from which it measured reflectivity, depolarization, and Doppler-derived velocity mean and standard deviation of a variety of clouds. This paper describes the radar and a data acquisition system that uses commercially available digitizers, signal processors, and signal generators. The authors also describe the tradeoffs between spatial resolution and ability to estimate reflectivity and velocity. This paper presents the first known airborne measurements of clouds made at 95 GHz; these are thought to be the most highly resolved millimeter-wave cloud images made to date. Depolarization, measured in terms of the linear depolarization ratio (LDR), was especially high in the melting band and in regions containing pristine ice crystals. These measurements demonstrate the advantages that high-spatial-resolution airborne millimeter-wave radars offer for the study of cloud microphysical properties

Published in:

IEEE Transactions on Geoscience and Remote Sensing  (Volume:32 ,  Issue: 4 )