Modeling of Lightning Strokes Using Two-Peaked Channel-Base Currents

Table 1

Two-peaked current function parameters to approximate channel-base currents MSS_FST [3] and MCS_FST [15].

Two-peaked current parameters	MSS_FST	MCS_FST
𝐼𝑚1 (kA)	27.66	40.07
𝐼𝑚2 (kA)	3.34	5.215
𝑡𝑚1 (μs)	8.2	8.2
𝑡𝑚2 (μs)	13.6	13.8
𝑑1	0.37	0.37
𝑑2=1−𝑑1	0.63	0.63
𝑎1	2.2	2.2
𝑎2	28	28
𝑓1	1	1
𝑏1	5.5	15
𝑔1	0.4	0.45
𝑔2=1−𝑔1	0.6	0.55
𝑐1	2	3.3
𝑐2	0.06	0.055