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A Study on Effective Dielectric Constants of Non-spherical Snowflake and Melting Hydrometeors
| Content Provider | Semantic Scholar |
|---|---|
| Author | Liao, Liang Meneghini, Robert Kuo, Kwo-Sen |
| Copyright Year | 2010 |
| Abstract | The bright band, a layer of enhanced radar echo associated with melting hydrometeors, is often observed in stratiform rain. The microphysical properties of melting hydrometeors and their scattering and propagation effects have long been studied not only because of their importance in accurately estimating parameters of the precipitation from spaceborne radar and radiometers but also as a result of their negative influence on earthsatellite communication systems caused by attenuation and depolarization of radio signals. To characterize the properties of the melting layer a number of observations of the radar bright band have been made by both groundbased weather radars and multi-frequency airborne radars. However, one of the impediments to the study of the radar signature of the melting layer is the determination of effective dielectric constants of melting hydrometeors. Although a number of mixing formulas are available to compute the effective dielectric constants, their results vary to a great extent when water is involved in the mixture, such as in the case of melting snow[1][2]. It is also physically unclear as to how to select among these various formulas. Furthermore, questions remain as to whether these mixing formulas can be applied to computations of radar polarimetric parameters from non-spherical melting particles. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://vigir.missouri.edu/~gdesouza/Research/Conference_CDs/IGARSS_2010/pdfs/4440.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
