Scholes, RJScholes, MC2007-06-292007-06-291998-09Scholes, RJ and Scholes, MC. 1998. Natural and human-related sources of ozone-forming trace gases in southern Africa. South African Journal of Science, vol. 94(9), pp 422-4250038-2353http://hdl.handle.net/10204/774Copyright: 1998 Bureau Scientific PublicationsNitric oxide (NO) reacts with hydrocarbons and carbon monoxide (CO) in the presence of sunlight to form ozone in the lower atmosphere. Tropospheric ozone can be harmful to plants and animals, and is usually regarded as a symptom of industrial or vehicular pollution. The cloud of tropospheric ozone which forms over southern Africa every spring probably has its main origin in natural emissions of the ozone-forming trace gases, including CO from vegetation fires, emissions of NO from soils, and hydrocarbons from plants. The observed levels of ozone are not dangerous to humans, but form a high background level to which pollutants of human origin are added.enTropospheric ozoneTrace gasesOzone cloudEmissionsSouth AfricaArticleScholes, R., & Scholes, M. (1998). Natural and human-related sources of ozone-forming trace gases in southern Africa. http://hdl.handle.net/10204/774Scholes, RJ, and MC Scholes "Natural and human-related sources of ozone-forming trace gases in southern Africa." (1998) http://hdl.handle.net/10204/774Scholes R, Scholes M. Natural and human-related sources of ozone-forming trace gases in southern Africa. 1998; http://hdl.handle.net/10204/774.TY - Article AU - Scholes, RJ AU - Scholes, MC AB - Nitric oxide (NO) reacts with hydrocarbons and carbon monoxide (CO) in the presence of sunlight to form ozone in the lower atmosphere. Tropospheric ozone can be harmful to plants and animals, and is usually regarded as a symptom of industrial or vehicular pollution. The cloud of tropospheric ozone which forms over southern Africa every spring probably has its main origin in natural emissions of the ozone-forming trace gases, including CO from vegetation fires, emissions of NO from soils, and hydrocarbons from plants. The observed levels of ozone are not dangerous to humans, but form a high background level to which pollutants of human origin are added. DA - 1998-09 DB - ResearchSpace DP - CSIR KW - Tropospheric ozone KW - Trace gases KW - Ozone cloud KW - Emissions KW - South Africa LK - https://researchspace.csir.co.za PY - 1998 SM - 0038-2353 T1 - Natural and human-related sources of ozone-forming trace gases in southern Africa TI - Natural and human-related sources of ozone-forming trace gases in southern Africa UR - http://hdl.handle.net/10204/774 ER -