Author(s)

J. Keller, S. Andreani-Aksoyoglu & U. Joss

Abstract

Biogenic species are emitted mainly from vegetation (volatile organic com- pounds, e.g. isoprene, monoterpenes) and from soils (nitrogen compounds). The emission rates per unit area from forests are known to be correlated to leaf tem- perature, photosynthetically active radiation and biomass density leading to space and time dependent emissions. In this study, a biogenic emission inven- tory for Switzerland was established, the grid size being 5 km x 5 km. The spa- tial vegetation distribution was taken from the Swiss land-use inventory. Hourly values of the air temperature and the solar radiation above the canopy were cal- culated using their dependence on altitude. For forests, these quantities were converted to the corresponding values within the canopy using a forest canopy model. The hourly biogenic emission inventory was prepared

Keywords