%A Zhou Yu-Shu (周玉淑), Li Xiao-Fan (李小凡), Gao Shou-Ting (高守亭) %T Precipitation efficiency and its relationship to physical factors %0 Journal Article %D 2014 %J Chin. Phys. B %R 10.1088/1674-1056/23/6/064210 %P 64210-064210 %V 23 %N 6 %U {https://cpb.iphy.ac.cn/CN/abstract/article_116281.shtml} %8 2014-06-15 %X The precipitation efficiency and its relationship to physical factors are examined by analyzing a two-dimensional cloud-resolving model simulation during TOGA COARE in this study. The basic physical factors include convective available potential energy, water-vapor convergence, vertical wind shear, cloud ratio, sea surface temperature, air temperature, and precipitable water. Precipitation efficiencies do not show a close relationship to air temperature nor to sea surface temperature nor to precipitable water. The precipitation efficiency increases as the water-vapor convergence rate increases and vertical wind shear weakens, whereas it decreases as the convective available potential energy dissipates and anvil clouds develop.