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Relationships between IWC and Polarimetric Radar Measurands at 94 and 220 GHz for Hexagonal Columns and Plates
Publisher: American Meteorological Society
Abstract: Ice crystal models of a hexagonal column and hexagonal plate are used for deriving power-law relationships between ice water content (IWC) and various radar measurands, including Zh, KDP, Ah, and ZDR (which are used together ...
Retrieving Cloud Ice Water Content Using Millimeter- and Centimeter-Wavelength Radar Polarimetric Observables
Publisher: American Meteorological Society
Abstract: cattering properties of a large collection of pristine ice crystals at millimeter and centimeter wavelengths are calculated using the generalized multiparticle Mie method. Millimeter- and centimeter-wavelength radar ...
35-GHz Dual-Polarization Propagation Link for Rain-Rate Estimation
Publisher: American Meteorological Society
Abstract: A 35-GHz dual-polarization propagation link (DPPL) is described and initial measurements are presented. The instrument is essentially a small, low-power, portable, dual linearly polarized pulsed radar that provides ...
X-Band Polarimetric and Ka-Band Doppler Spectral Radar Observations of a Graupel-Producing Arctic Mixed-Phase Cloud
Publisher: American Meteorological Society
Abstract: haracteristics of graupel in an Arctic deep mixed-phase cloud on 7 December 2013 were identified with observations from an X-band scanning polarimetric radar and a Ka-band zenith-pointing radar in conjunction with scattering ...
Linear Depolarization Ratios of Columnar Ice Crystals in a Deep Precipitating System over the Arctic Observed by Zenith-Pointing Ka-Band Doppler Radar
Publisher: American Meteorological Society
Abstract: his study demonstrates that linear depolarization ratio (LDR) values obtained from zenith-pointing Ka-band radar Doppler velocity spectra are sufficient for detecting columnar ice crystals. During a deep precipitating ...
Shapes and Fall Orientations of Ice Particle Aggregates
Publisher: American Meteorological Society
Abstract: AbstractTesting the often-made assumption that ice particle aggregates (snowflakes) are well represented by oblate spheroids, ellipsoid fits are applied to aggregate images. An algorithm to retrieve both the ellipsoidal ...
What Can We Conclude about the Real Aspect Ratios of Ice Particle Aggregates from Two-Dimensional Images?
Publisher: American Meteorological Society
Abstract: simple numerical experiment was performed to investigate the result published in many papers that measurements indicate that aggregates may be well represented as oblate spheroids with mean aspect ratio (semiminor axis to ...