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RISErrors in Estimating Raindrop Size Distribution Parameters Employing Disdrometer and Simulated Raindrop Spectra
Publisher: American Meteorological Society
Abstract: There have been debates and differences of opinion over the validity of using drop size distribution (DSD) models to characterize precipitation microphysics and to retrieve DSD parameters from multiparameter radar measurements. ...
A Variational Approach for Retrieving Raindrop Size Distribution from Polarimetric Radar Measurements in the Presence of Attenuation
Publisher: American Meteorological Society
Abstract: his study presents a two-dimensional variational approach to retrieving raindrop size distributions (DSDs) from polarimetric radar data in the presence of attenuation. A two-parameter DSD model, the constrained-gamma model, ...
Diagnosing the Intercept Parameter for Exponential Raindrop Size Distribution Based on Video Disdrometer Observations: Model Development
Publisher: American Meteorological Society
Abstract: The exponential distribution N(D) = N0 exp(??D) with a fixed intercept parameter N0 is most commonly used to represent raindrop size distribution (DSD) in rainfall estimation and in single-moment bulk microphysics ...
Polarimetric Radar Rain Estimation through Retrieval of Drop Size Distribution Using a Bayesian Approach
Publisher: American Meteorological Society
Abstract: This study proposes a Bayesian approach to retrieve raindrop size distributions (DSDs) and to estimate rainfall rates from radar reflectivity in horizontal polarization ZH and differential reflectivity ZDR. With this ...
Radar Vertical Profile of Reflectivity Correction with TRMM Observations Using a Neural Network Approach
Publisher: American Meteorological Society
Abstract: omplex terrain poses challenges to the ground-based radar quantitative precipitation estimation (QPE) because of partial or total blockages of radar beams in the lower tilts. Reflectivities from higher tilts are often used ...
Analysis of Video Disdrometer and Polarimetric Radar Data to Characterize Rain Microphysics in Oklahoma
Publisher: American Meteorological Society
Abstract: In this paper, data from three 2-dimensional video disdrometers (2DVDs) and an S-band polarimetric radar are used to characterize rain microphysics in Oklahoma. Sampling errors from the 2DVD measurements are quantified ...
Winter Precipitation Microphysics Characterized by Polarimetric Radar and Video Disdrometer Observations in Central Oklahoma
Publisher: American Meteorological Society
Abstract: he study of precipitation in different phases is important to understanding the physical processes that occur in storms, as well as to improving their representation in numerical weather prediction models. A 2D video ...
Statistical and Physical Analysis of the Vertical Structure of Precipitation in the Mountainous West Region of the United States Using 11+ Years of Spaceborne Observations from TRMM Precipitation Radar
Publisher: American Meteorological Society
Abstract: his study presents a statistical analysis of the vertical structure of precipitation measured by NASA?Japan Aerospace Exploration Agency?s (JAXA) Tropical Rainfall Measuring Mission (TRMM) precipitation radar (PR) in the ...
Correction of Radar QPE Errors for Nonuniform VPRs in Mesoscale Convective Systems Using TRMM Observations
Publisher: American Meteorological Society
Abstract: esoscale convective systems (MCSs) contain both regions of convective and stratiform precipitation, and a bright band (BB) is often found in the stratiform region. Inflated reflectivity intensities in the BB often cause ...
Cross Validation of Spaceborne Radar and Ground Polarimetric Radar Aided by Polarimetric Echo Classification of Hydrometeor Types
Publisher: American Meteorological Society
Abstract: round-based polarimetric weather radar is arguably the most powerful validation tool that provides physical insight into the development and interpretation of spaceborne weather radar algorithms and observations. This study ...