Author(s)

H. Holler, H. Huntrieser, U. Finke, M. Hagen, Ch. Feigl, U. Schumann, H. Schlager and P. Meischner

Abstract

x Concentrations in Thunderstorms: Sources from Lightning and Transport Guest Contribution H Holler, H. Huntrieser, U Finke, M Hagen, Ch. Feigl, U Schumann, H Schlager, and P Meischner Deutsches Zentrum fur Luft- und Raumfahrt (DLR), Institutfur Physik der Atmosphare, Oberpfaffenhofen, D-82234 Weflling, Germany Introduction As a precursor of ozone NOx (NO + NO:) plays an important role for climate investigations. The most important sources of NOx in the middle and upper troposphere arise from convective transports from the boundary layer, the production by lightning, transports from the stratosphere, and aircraft emissions. Large uncertainties still exist concerning the strength of these sources. The global lightning induced NOx source represents the largest uncertainty in the global NOx budget, with estimates varying between 1 and 220 Tg nitrogen/yr (Liaw et al., 199

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