An Expanded Sensitivity Study of Simulated Storm Life Span to Ventilation Parameterization in a Cloud Resolving Model

We performed a sensitivity study on the life span of numerically simulated storm using parameterization ventilation coefficient. This is an expanded sequel to our previous study, where effect precipitation particles (snow, rain, and hail) was either halved or doubled as whole. In this we tested coefficient for different compared that with results. present changed in two scenarios: (1) only rain category changed; (2) snow hail categories were changed. The results show these scenarios lead evolution paths storm. general, reducing leads quick dissipation, whereas enhancing snow/hail development multicellular storms. An analysis physical mechanisms leading such provided. shows yet another example how change cloud’s microphysical can profound its larger-scale dynamical process.