On the NOx production in lightning flashes
An estimation of the NOx yield of a lightning flash is made by treating the lightning flash as a composite event consisting of several discharge processes without using the energy dissipation as an input parameter. The results show that (a) cloud flashes are as efficient as ground flashes in NOx generation (b) NOx production takes place mainly in slow discharge processes such as leaders and continuing currents with return strokes contributing only a small fraction (c) the global annual Nox production by lightning is about 7 Tg(N) and (d) in ground flashes only about 10％ of the Nox is generated at heights below the charge center with 90％ of the contribution coming from horizontal channels inside the cloud making the injection of NOx by thunderstorms into the atmosphere to take place at a height of 5 to 10 km.
Vernon Cooray Mahbubur Rahman Vladimir Rakov
Division for electricity and lightning research, Angstrǒm Laboratory Department of Electrical and Computer Engineering, University of Florida, Gainesville, USA
国际会议
第13届国际大气电学会议(The 13th International Conference on Atmospheric Electricity)
北京
英文
2007-08-13（万方平台首次上网日期，不代表论文的发表时间）