3:45 PM - 4:00 PM
[MIS09-02] Lightning activity around the tropical cyclone depending on the distance from the land
Keywords:Tropical cyclone, Lightning, Philippine Sea
Lightning activity was drastically increased around the TC during the TC genesis stage over the western north Pacific. Numbers of lightning reached the maximum during the life cycle of the TC. We called this phenomenon as “lightning burst”. It indicates that it will be a signal for a TC genesis when lightning burst occurred in the tropical disturbances. On the other hand, when TC generated far from Philippines over the open ocean, lightning activity was weak and lightning burst did not occur around the TC. The environment of land-based aerosol may be necessary for more lightnings in the TCs and the lightning bursts. We will discuss what kind of structure occurred during the lightning burst and what kind of mechanism responsible for the lightning around the TC.