Modeling, simulation, and comparison study of cirrus cloud ice crystals

Villa, Jorge M.; Cruz-Pol, Sandra; Colom-Ustáriz, José G.; Sekelsky, S.M.

doi:10.1117/12.463034

Cited by 2 publications

(3 citation statements)

References 26 publications

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“…The density of the ice particles has been shown that have a big effect in the backscattering [9] . The density of the ice particles itself vary as a function of its dimensions and in cirrus clouds various shapes of the bullet rosettes are observed; past studies found that the dominant crystal type found in cirrus clouds is the bullet rosette, with an average of five bullets per rosette like the shown in Fig.…”

Section: Experiments Setupmentioning

confidence: 99%

“…For every dipole an electric field is calculated and the backscattering is calculated from the sum of all the fields due to each dipole. As future work, we will compare the backscattering efficiencies and the equivalent reflectivity obtained using Mie theory with the equivalent reflectivity using the discrete dipole approximation [9] . …”

Section: Discrete Dipole Approximation (Dda)mentioning

confidence: 99%

“…Using the above equations, we obtained an index of refraction for each bullet size [9] . The new complex indexes of refraction in our case are used to calculate the backscattering efficiency using Mie theory.…”

Section: Experiments Setupmentioning

confidence: 99%

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<title>Cirrus clouds millimeter-wave reflectivity comparison with in-situ ice crystal airborne data</title>

et al. 2004

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In an effort to evaluate scattering models for particle size distributions of ice crystals within cirrus clouds, simultaneous data was collected in March 2000 during the Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Cloud Intensive operational period (Cloud IOP) at the Cloud and Radiation Testbed (CART) site in Lamont, Oklahoma. In situ measurements of ice particles were collected using the National Center for Atmospheric Research (NCAR) Video Ice Particle Sampler (VIPS), which flew on the University of North Dakota Citation research aircraft. Ground-based vertical radar profiles were collected using the University of Massachusetts (UMass) 33GHz/95GHz Cloud Profiler Radar System (CPRS). Data from both sensors was used to retrieve and compare the equivalent radar reflectivity at Ka band (33GHz). The equivalent radar reflectivity measured by the ground-based, zenith-looking, CPRS radar at Ka band and compared to the reflectivity computed from the airborne VIPS samples of particle size distribution, N(D), using Mie theory. As anticipated the equivalent reflectivity of the radar and VIPS were similar at the time the UND Citation overflew the radar.

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Section: Experiments Setupmentioning

confidence: 99%

Section: Discrete Dipole Approximation (Dda)mentioning

confidence: 99%