Lightning Observatory in Gainesville (LOG), Florida: A review of recent results

•We review several recent studies conducted at the Lightning Observatory in Gainesville (LOG), Florida.•Evaluation of field-to-current conversion equations.•Lower positive charge in the cloud, positive lightning, and compact intracloud discharges.•X-rays produced by first and subsequent strokes in natural lightning.•Lightning interaction with the ionosphere.

A review of several recent studies conducted at the Lightning Observatory in Gainesville (LOG), Florida, is given, including (a) evaluation of field-to-current conversion equations, (b) lower positive charge in the cloud and lightning type, (c) positive lightning, (d) compact intracloud lightning discharges, (e) lightning interaction with the ionosphere, and (f) X-rays produced by first and subsequent strokes in natural lightning. The results serve to improve our understanding of the physics of lightning with important implications for lightning detection and lightning protection areas.