Chinese 云滴有效半径 Cited by user Ustczyh9 on 05 May 2022 云滴有效半径（或云有效半径、云粒子有效半径，或根据上下文简称有效半径）是云滴大小分布的加权平均值。 该术语于 1974 年由James E. Hansen和Larry Travis提出，定义为液滴尺寸分布的三阶矩与二阶矩之比，用于反演遥感数据。 从物理的角度来看，它是云滴粒子的面积加权半径。在数学上，计算公式为.
English James Hansen Cited by user Duncan.Hull on 29 Apr 2015 James Edward Hansen (born March 29, 1941) is an American adjunct professor in the Department of Earth and Environmental Sciences at Columbia University.
English Cloud drop effective radius Cited by user Nathan Johnson on 04 Aug 2009 The cloud drop effective radius (alternatively cloud effective radius or effective radius) is a weighted mean of the size distribution of cloud droplets.