Microwave radiation generated by lightning

This chapter has presented a comprehensive review on the previous and current studies of microwave and VHF electromagnetic radiations generated by lightning flashes. Since the first experimental work done by Brook and Kitagawa in 1964, more research works have been conducted at various geographical regions to understand the underlying mechanism behind the emissions of VHF and microwave radiations by lightning flashes. Based on the findings of previous studies, most likely the microwave and VHF radiations have been generated by two different processes. The VHF radiation is generated by propagating streamers while microwave radiation is generated by electron avalanches and corona discharges.