Simultaneous measurements of NO/x/, NO, and O3 production in a laboratory discharge - Atmospheric implications

Details Simultaneous measurements of NO/x/, NO, and O3 production in a laboratory discharge - Atmospheric implications Simultaneous measurements of NO/x/, NO, and O3 production in a laboratory discharge - Atmospheric implications

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981georl...8..357l&link_type=abstract

Geophysical Research Letters, vol. 8, Apr. 1981, p. 357-360.

Physics

37

Atmospheric Chemistry, Nitrogen Oxides, Ozone, Troposphere, Air Pollution, Chemical Reactions, Environment Simulation, Lightning, Man Environment Interactions, Nitric Oxide

Scientific paper

Simultaneous measurements of NO(x) (NO + NO2), NO, and O3 production in a laboratory discharge show that within the uncertainties of the experiment, all of the NO(x) produced was NO, and no detectable enhancement of O3 after the discharge was observed. The laboratory experiments described gave an NO production rate of 5 + or - 2 x 10 to the 16th molecules/joule mole for a 100,000-1,000,000 joules/m spark. Assuming that the global dissipation of lightning energy is about 10 to the -8th joules/sq cm per sec (Dawson, 1980; and Hill et al., 1980), the NO production rate results in a global source of NO due to lightning of about 1.8 Mt(N)/yr, which is considerably lower than earlier estimates. This lower value for NO(x) production by lightning suggests that NO(x) emissions from anthropogenic sources, estimated to be at least 20 MT(N)/yr, may be the dominant source of NO(x) to the global troposphere. Furthermore, since most of the anthropogenic sources of NO(x) are located in the Northern Hemisphere, this new interpretation of the relative source strengths of this species favors a highly skewed asymmetric distribution of NO(x).

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