Ground-to-cloud discharge

From Glossary of Meteorology



ground-to-cloud discharge

A lightning discharge in which the original leader process starts upward from some object on the ground; the opposite of the more common cloud-to-ground discharge.

Ground-to-cloud discharges most frequently emanate from very tall structures that, being at the same potential as the earth, can exhibit the strong field intensities near their upper extremities necessary to initiate leaders.