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Two distinct modes in one‐day rainfall event during MC3E field campaign: Analyses of disdrometer observations and WRF‐SBM simulation
Author(s) -
Iguchi Takamichi,
Matsui Toshihisa,
Tokay Ali,
Kollias Pavlos,
Tao WeiKuo
Publication year - 2012
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2012gl053329
Subject(s) - weather research and forecasting model , disdrometer , environmental science , middle latitudes , bin , graupel , meteorology , atmospheric sciences , radius , cloud physics , convection , climatology , precipitation , physics , geology , cloud computing , mathematics , computer security , algorithm , rain gauge , computer science , operating system
A unique microphysical structure of rainfall is observed by the surface laser optical Particle Size and Velocity (Parsivel) disdrometers on 25 April 2011 during Midlatitude Continental Convective Clouds Experiment (MC3E). According to the systematic differences in rainfall rate and bulk effective droplet radius, the sampling data can be divided into two groups; the rainfall mostly from the deep convective clouds has relatively high rainfall rate and large bulk effective droplet radius, whereas the reverse is true for the rainfall from the shallow wrm clouds. The Weather Research and Forecasting model coupled with spectral bin microphysics (WRF‐SBM) successfully reproduces the two distinct modes in the observed rainfall microphysical structure. The results show that the up‐to‐date model can demonstrate how the cloud physics and the weather condition on the day are involved in forming the unique rainfall characteristic.