Detailed observations of lightning flashes and processes associated with terrestrial gamma ray flashes

We describe recent coordinated observations of lightning and terrestrial gamma ray flashes (TGFs) that provide new insight into the detailed processes that generate this thunderstorm-driven high-energy radiation. These observations include lightning mapping array measurements of the structure and development of a lightning flash that produced a TGF, and high time resolution observations of the specific lightning processes associated with three TGFs.