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Report No.

Development of a sophisticated land surface model for impact assessments of aerosols on vegetation

Katata, Genki; Kajino, Mizuo*; Nagai, Haruyasu 

A sophisticated multi-layer land surface model (SOLVEG) was applied to mountain forest in Japan to test its performance in predicting the aerosol deposition on vegetation in East Asia. The model calculates the dry deposition of gases and size-resolved particles at each canopy layer. Using the output data from meteorological and chemical transport models, the calculations of deposition velocities of the SO$$_{2}$$ and NH$$_{3}$$ and size-resolved aerosols by SOLVEG was carried out. The SOLVEG reproduced a typically observed diurnal pattern in dry deposition velocities of SO$$_{2}$$ and NH$$_{3}$$ as those increased during the daytime due to the stomata uptake. The calculated size-resolved deposition velocity of aerosols agreed with the observed data obtained from the throughfall measurements in the study site.



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