Open AccessNumerical study on the evolution of cloud microphysical characteristics during rainfall processes of typhoon Bolaven in 2012
Author(s) -
Zhiwei Zhang,
Sicong Li,
Yunying Li
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/513/1/012052
Subject(s) - typhoon , rainwater harvesting , weather research and forecasting model , water vapor , environmental science , atmospheric sciences , troposphere , meteorology , cloud computing , core (optical fiber) , climatology , geology , materials science , geography , computer science , operating system , ecology , composite material , biology
The cloud microphysical characteristics in a rainfall process of typhoon Bolaven is studied by the WRF model. The results indicate that the maximum values of different cloud microphysical parameters occur at different times, strong ascending motions have an important impact on the evolution of cloud microphysics. More than four hours before the peak of rainfall, ascending motions are strongest and occur primarily above the 0°C layer, water vapor is lifted to the upper troposphere and frozen. With increasing rainfall, the core of the strong ascending motion decreases. When the core of the strong ascending motion decreases below the 0°C layer, the amounts of both rainwater and cloud water increase rapidly and reach their maximums at and after the peak, respectively. The vertically integrated cloud water content maintains its maximum for approximately three hours in torrential rain, and cloud water is continuously collected by rainwater.