In order to further understand the effect of the middle and low-level horizontal wind speed on the feature of thunderstorm dynamic field, electrical activities and precipitation, four sensitivity tests in a three-dimensional dynamics-electrification coupled model with different horizontal speeds, including without wind, weak wind, moderate intensity wind and somewhat strong wind were studied. The simulation results show that: As the wind speed increases, particle growth was inhibited,the electrification process of thunderstorm will be slowed down and the electrification regional transfer occurs, longer electrification time would make the storm produced more greater electric field and occurred more severe discharge process, however, if the wind is too strong, there would no lightning happen. Moderate intensity wind is most conducive to lightning. In addition, wind speed in a certain range of growth will increase the precipitation, but if the wind is too strong, precipitation will reduce. These results showed that middle and low-level speed can make significance impact on lightning and precipitation, we should comprehensive consider the wind speed influence on thunderstorm dynamic field and microphysical processes in the study of lightning and precipitation.
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