Title :
Dielectric constants for melting hydrometeors as derived from a numerical method
Author :
Meneghini, Robert ; Liao, Liang
Author_Institution :
NASA Goddard Space Flight Center, Greenbelt, MD, USA
Abstract :
Using a conjugate gradient numerical method, calculations of the radar scattering coefficients for mixed phase hydrometeors were made. For the uniform ice-water mixtures considered, an effective dielectric constant was derived and compared with the predictions from the Maxwell Garnett formula. The flexibility of the numerical method with respect to the spatial distribution of the component materials offers the potential to model the scattering characteristics of complex, mixed-phase hydrometeors
Keywords :
atmospheric techniques; backscatter; meteorological radar; radar cross-sections; radar theory; radiowave propagation; rain; remote sensing by radar; tropospheric electromagnetic wave propagation; atmosphere; backscatter theory; conjugate gradient numerical model; dielectric constant; ice-water mixture; measurement technique; melting hydrometeor; meteorological radar; mixed phase hydrometeor; numerical method; radar remote sensing; radar scattering; radar scattering coefficients; rain; rainfall; spatial distribution; Dielectric constant; Electromagnetic scattering; Fast Fourier transforms; Ice; Integral equations; Mie scattering; Particle scattering; Radar scattering; Volume measurement; Water;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-3068-4
DOI :
10.1109/IGARSS.1996.516230
