Revisiting the "Tilted Dipole" concept for explaining the high percentage of positive ground flashes in winter thunderstorms

Yoav Yair1, Barry Hugh Lynn2, Modechai Yaffe1 and Yanai Namia-Cohen1, (1)Interdisciplinary Center (IDC) Herzliya, Herzliya, Israel, (2)Weather It Is, LTD, Efrat, Israel