”Typically over the U.S., fossil fuel burning is the main
cause of nitrogen oxides (NOx), which lead to the formation
of ozone near the Earth’s surface. However, above the
Earth’s surface in the free troposphere (3-8 miles high),
during the summer months, lightning activity increases NOx
by as much as 90 percent and ozone by more than 30 percent.”
Surprisingly, Lightning does have a use in Earths Chemestry.