Abstract
Short lived NMHC have been detected in the remote atmosphere, and their origin was ascribed to local emissions from the ocean surface [1–4]. Superficial sea water in the ocean appears supersaturated in light non methane hydrocarbons by two or three orders of magnitude and acts as a net source for the atmosphere. Despite the great variability of one order of magnitude in hydrocarbons concentrations, its relative composition remains fairly constant and is characterised by a high proportion of alkenes, mainly ethene and propene. In order to determine the origin of these light hydrocarbons, systematic vertical profiles were undertaken in the Mediterranean in order to follow the seasonal variability of light unsaturated and mono-unsaturated hydrocarbons in connection with biological parameters such as chlorophyll and photosynthetic pigments. Also vertical profiles were performed in the Pacific Ocean near hydrothermal sources in order to investigate the possible origin of acetylene.
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Bonsang, B. (2000). Air-Sea Exchanges of Non-Methane Hydrocarbons. In: Larsen, S.E., Fiedler, F., Borrell, P. (eds) Exchange and Transport of Air Pollutants over Complex Terrain and the Sea. Transport and Chemical Transformation of Pollutants in the Troposphere, vol 9. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-57252-4_22
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DOI: https://doi.org/10.1007/978-3-642-57252-4_22
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