Abstract
A series of experiments to measure acidic deposition due to various meteorological processes (rain, snow, fog and dry weather) were carried out between August 1985 and April 1986 at the south summit (Pic White, 860 m) of Mt. Tremblant, Quebec, Canada. They involved natural, varathane-coated and artificial shoots of fir trees. Anion and (for some samples) cation content of deposition was measured and the 850 mb trajectories for selected events of high deposition examined.
Results show deposition of anions during periods of dry weather in the fall season, with buildup of sulphate greater than that of nitrates and chlorides, and effective rinse-off of deposition by precipitation events. Cumulative winter deposition was strongly dependent on orientation of sampling branches. The use of standardized artificial branches in idealized exposure conditions gave the most consistent results and enabled a comparison to be made between the various deposition processes.
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Schuepp, P.H., McGerrigle, D.N., Leighton, H.G., Paquette, G., Schemenauer, R.S., Kermasha, S. (1988). Observations on Wet and Dry Deposition to Foliage at a High Elevation Site. In: Unsworth, M.H., Fowler, D. (eds) Acid Deposition at High Elevation Sites. NATO ASI Series, vol 252. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3079-7_38
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DOI: https://doi.org/10.1007/978-94-009-3079-7_38
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