Abstract: This study investigates whether part of the variability of rain rates not explained by the thermodynamic parameters could be explained by the vertical wind structure as revealed by standard aerological sounding observations. ...

Abstract: Space and time autocorrelation functions are defined for the precipitation process on a horizontal plane. An optical device was designed and used to measure these functions as well as the mean, the mean square, and the ...

Abstract: The relationship between convective scales in the pre-storm environment and Doppler measurements of divergence is discussed with attention to problems inherent in radar measurements. A method is suggested to minimize the ...

Abstract: A critical review of the velocity-azimuth display (VAD) analysis for the retrieval of wind, divergence, and deformation from single-Doppler observations is presented. It is shown that in situations when the linear wind ...

Abstract: The decrease of the mean square and the variance of reflectivity due to radar beam smoothing and post-detection integration are studied in terms of the autocorrelation function of the field of reflectivity. An exponential ...

Abstract: Spacial smoothing by the radar beam as well as post-detection integration reduce the variability of the distribution of rainfall rate in space. It is shown that when radar data are compared with instantaneous point rainfall ...

Abstract: In this work a method is presented to obtain R-Z? relationships through comparison, in probability, of nonsimultaneous measurements of Z? and R. Range dependent relationships obtained in this way are given for a radar ...

Abstract: Ten years of raingage data are processed in order to evaluate duration, average and maximum rate, mean square, variance, autocorrelation function and total amount for each rain storm. A spatial interpretation of these ...

Abstract: Observations of raindrop size distributions in Brazil were analyzed. For long lasting records and during periods when there was no evidence of rain falling through updraft, the observations indicate that equilibrium between ...

Abstract: A model of rain development based on the quasi-stochastic coalescence equation and including the sedimentation of drops has been used to study the formation of drop size distributions in conditions of weak updraft. Comparisons ...