Constraints to do realistic modeling of the electric field ahead of the tip of a lightning leader

Skeltved, A.B., N. Østgaard, A. Mezentsev, N. Lehtinen and B. Carlson (2017), Constraints to do realistic modeling of the electric field ahead of the tip of a lightning leader, J. Geophys. Res. Atmos., doi.org/10.1002/2016JD026206 (pdf)