The separation of convective and stratiform precipitation regions of simulated Typhoon Chanchu and its sensitivity to the number concentration of cloud droplets

► Separate the precipitation of the simulated Typhoon Chanchu into stratiform, mixed and convective components. ► The effect of the parameter of the cloud condensation nuclei concentration on Typhoon Chanchu. ► The response of the convective area to a varying CNP is greater than that of the stratiform area.