contributor author | Nakamura, Kenji | |
contributor author | Inomata, Hideyuki | |
date accessioned | 2017-06-09T16:18:40Z | |
date available | 2017-06-09T16:18:40Z | |
date copyright | 1991/06/01 | |
date issued | 1991 | |
identifier issn | 0739-0572 | |
identifier other | ams-655.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4206733 | |
description abstract | The effect of non-Rayleigh scattering appearing in a rain observation experiment using a dual-wavelength rain radar, is investigated. The non-Rayleigh scattering effect causes a small difference between the effective radar reflectivity factor and the actual radar reflectivity factor that is defined as the summation of the sixth power of raindrop diameter in a unit volume. This difference causes errors in the rain retrieval algorithm based on attenuation. A simultaneous rain observation by a dual-wavelength radar and a C-band Doppler radar was performed to confirm the existence of the non-Rayleigh scattering effect. Raindrop-size distributions are estimated from Doppler spectra at C band measured by the vertically pointing Doppler radar. The difference between effective radar reflectivity factors at X and Ka band was determined in two different ways. One way was to estimate the difference in the effective radar reflectivity factors at these wavelengths based upon raindrop-size spectra determined from the Doppler spectra of the C-band radar. The second was to use the measured values of the effective radar reflectivity factors obtained directly from the X- and Ka-band radar. It is found that both differences vary according to the raindrop-size distribution variations and have a good correlation in a time scale of less than a few minutes. This fact confirms that the effective radar reflectivity factors are affected by the non-Rayleigh scattering. | |
publisher | American Meteorological Society | |
title | Non-Rayleigh Scattering Effect in Rain Observations by an X- and Ka-band Dual-Wavelength Radar | |
type | Journal Paper | |
journal volume | 8 | |
journal issue | 3 | |
journal title | Journal of Atmospheric and Oceanic Technology | |
identifier doi | 10.1175/1520-0426(1991)008<0352:NRSEIR>2.0.CO;2 | |
journal fristpage | 352 | |
journal lastpage | 362 | |
tree | Journal of Atmospheric and Oceanic Technology:;1991:;volume( 008 ):;issue: 003 | |
contenttype | Fulltext | |