Numerical simulations described in previous studies showed that adding cloud condensation nuclei to marine stratocumulus can prevent their breakup from closed into open cells. Additional analyses of the same simulations show that the suppression of rain is well described in terms of cloud drop effective radius (re). Rain is initiated when re near cloud top is around 12-14 um. Cloud water starts to get depleted when column-maximum rain intensity (Rmax) exceeds 0.1 mm h-1. This happens when cloud-top re reaches 14 um. Rmax is mostly less than 0.1 mm h-1 at re
Revised: July 25, 2012 |
Published: July 4, 2012
Citation
Rosenfeld D., H. Wang, and P.J. Rasch. 2012.The Roles of Cloud Drop Effective Radius and LWP in Determining Rain Properties in Marine Stratocumulus.Geophysical Research Letters 39.PNNL-SA-87306.doi:10.1029/2012GL052028