![]() This study investigates lightning NO x (LNO x) production and transport processes in anomalous (midlevel positive charge) and normal polarity (midlevel negative charge) thunderstorms by advecting parcels containing LNO x from the flash channels of over 5,600 lightning flashes observed during the Deep Convective Clouds and Chemistry (DC3) field campaign. However, the amount of NO x produced per flash and NO x advection in storms remain uncertain. ![]() Thus, lightning can play an important role in ozone production within the UT. Interest is placed on the vertical advection of NO x because its lifetime increases to several days in the UT compared to roughly 3 hr in the lower troposphere and boundary layer. Lightning serves as the largest source of nitrogen oxides (NO x = NO + NO 2) to the upper troposphere (UT) and is one of the largest natural sources of NO x. Production and transport of NO x by convection is critical as it serves as a precursor to tropospheric ozone, an important greenhouse gas.
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