Global statistics of liquid water content and effective number concentrationof water clouds over ocean derived from combined CALIPSO and MODISmeasurements

[摘要] This study presents an empirical relation that links the volume extinctioncoefficients of water clouds, the layer integrated depolarization ratiosmeasured by lidar, and the effective radii of water clouds derived fromcollocated passive sensor observations.Based on Monte Carlo simulations ofCALIPSO lidar observations, this method combines the cloud effective radiusreported by MODIS with the lidar depolarization ratios measured by CALIPSO toestimate both the liquid water content and the effective number concentrationof water clouds.The method is applied to collocated CALIPSO and MODISmeasurements obtained during July and October of 2006, and January 2007.Global statistics of the cloud liquid water content and effective numberconcentration are presented.

[学科分类] 大气科学