Significant Lightning Stroke Count in Negative Ground Flashes Featuring the Relationship of Preliminary Breakdown and The First Return Stroke

The separation duration of Preliminary Breakdown (PB) to the First Return Stroke (PB-RS duration) and ratio between highest amplitude pulse negative CG flashesand first (PB/RS ratio) were successfully used as a tool by many researchers determine relationship lightning ground flashes physical changes (latitude, regional thunderstorm). Malaysia is one countries with flash density globally, occurrences are mainly due monsoon seasons. Monsoons in Northeast, Southwest, two transition periods. However, there no available information relate activities under influence all above statements motivated our team present new statistical analysis seasons' effects (Northeast Southwest). 83 out 332 electric radiation field data (fast fields) from six thunderstorms selected analyzed. recorded using 12-bit high-speed transient recorder (HDO 4024) resolution tens nanoseconds sampling 12.5 MS/s. PB/RS monsoons similar each other. PB-RS has factors longer during Southwest than Northeast monsoon. We classified into four categories (>100%, 50-100%, 20-50%, < 20%) an indication preliminary breakdown strength. It found that weakest train less shown produces higher return strokes strong one. results this study could be evident lower strength correlates Low Positive Charge Region (LPCR), which means initial process only requires low energy break LPCR. Hence, these features have number stroke counts compared pronounced ones. it would more remarkable if provide bulky for specific study.