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Report No.

Numerical study on estimation of matter deposition on the forest through fog precipitation

Katata, Genki; Kajino, Mizuo*; Hiraki, Takatoshi*; Aikawa, Masahide*; Kobayashi, Tomiki*

Water and matter deposition via fog precipitation onto the ceder trees was investigated using the models of three-dimensional mesoscale model (WRF), aerosol transport model (EMTACS), and land surface model including fog deposition on vegetation (SOLVEG). Simulations using WRF, EMTACS, and SOLVEG were independently carried out to produce meteorological variables, chemical compositions, and fog precipitation, respectively. Meteorological variables were overall reproduced by WRF. Fog precipitation estimation by SOLVEG using the output from WRF significantly underestimated throughfall measurements. It was considerable that "edge effect' enhanced fog precipitation in measurements in addition to fog deposition by turbulent vertical mixing of fog water. EMTACS resolved temporal evolutions in chemical compositions in fog water and size distribution of aerosols. WRF-SOLVEG-EMTACS system should be improved in future to assess matter deposition via fog precipitation.



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