Investigation of the dielectric constants of inhomogeneous air-ice and snow-water spheres

Author

Liao, Liang ; Meneghini, Robert

Author_Institution

Caelum Res. Corp., NASA Goddard Space Flight Center, Greenbelt, MD, USA

Volume

5

fYear

2000

fDate

2000

Firstpage

1804

Abstract

The numerical procedure for deriving the effective dielectric constants ε_eff is given. The results of ε_eff are then computed for the non-uniform air-ice and snow-water spheres. The results are also compared with other mixing formulae and models. In the final part of the paper the dielectric constants from the non-uniformly melting hydrometeors and other mixing models, along with the model of the melting layer, are used to reproduce the radar profiles of the bright-band in comparison with the Precipitation Radar measurements at a frequency of 13.8 GHz onboard the Tropical Rain Measurement Mission

Keywords

atmospheric electricity; atmospheric precipitation; ice; meteorological radar; permittivity; remote sensing by radar; snow; spaceborne radar; water; Precipitation Radar measurements; Tropical Rain Measurement Mission; bright band; dielectric constants; effective dielectric constants; inhomogeneous air-ice spheres; inhomogeneous snow-water spheres; melting layer; mixing formulae; mixing models; nonuniform spheres; nonuniformly melting hydrometeors; numerical procedure; radar profiles; Area measurement; Dielectric constant; Dielectric measurements; Fourier transforms; Ice; Microwave frequencies; Radar measurements; Rain; Snow; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International

Conference_Location

Honolulu, HI

Print_ISBN

0-7803-6359-0

Type

conf

DOI

10.1109/IGARSS.2000.858129

Filename

858129