Estimation of Gamma Raindrop Size Distribution Parameters: Statistical Fluctuations and Estimation Errors
نویسندگان
چکیده
منابع مشابه
Estimation of Raindrop Size Distribution Parameters from Polarimetric Radar Measurements
Estimation of raindrop size distribution over large spatial and temporal scales has been a long-standing goal of polarimetric radar. Algorithms to estimate the parameters of a gamma raindrop size distribution model from polarimetric radar observations of reflectivity, differential reflectivity, and specific differential phase are developed. Differential reflectivity is the most closely related ...
متن کاملStatistical Analysis of the Raindrop Size Distribution Using Disdrometer Data
The present study utilizes nine years of measurements taken from a Joss–Waldvogel disdrometer (JWD). From this dataset, thirty six rainfall events, were selected and categorized, respectively, in convective and stratiform types, according to specific criteria. Six statistical distributions namely the oneand two-parameter exponential, the twoand three-parameter lognormal and finally the twoand t...
متن کاملParameters Estimation of the Gamma Distribution in the Presence of Outliers Generated from Gamma Distribution
The maximum likelihood, moment and mixture of the estimators are derived for samples from the gamma distribution in the presence of outliers generated from gamma distribution. These estimators are compared empirically when all parameters are unknown; their bias and mean squares error are investigated with the help of numerical technique. We have shown that these estimators are asymptotically un...
متن کاملEstimation of Parameters of Misclassified Size Biased Borel Distribution
A misclassified size-biased Borel Distribution (MSBBD), where some of the observations corresponding to x = c + 1 are wrongly reported as x = c with probability α, is defined. Various estimation methods like the method of maximum likelihood (ML), method of moments, and the Bayes estimation for the parameters of the MSBB distribution are used. The performance of the estimators are studied using ...
متن کاملRaindrop size distribution estimation from S-band polarimetric radar using a regularized neural network
Radar rainrate estimates are prone to a high degree of uncertainty due to several error sources, among which the space-time variability of the raindrop size distribution (RSD). Polarimetric radar measurements enable the use of combined algorithms which reduce the sensitivity to the variability of the RSD. The aim of this work is to develop a new procedure to retrieve the RSD parameters which ca...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Atmospheric and Oceanic Technology
سال: 2009
ISSN: 1520-0426,0739-0572
DOI: 10.1175/2009jtecha1199.1