Environmental Engineering Reference
In-Depth Information
Answer:
We are using our own emission inventory. The European land use is
used for the mother domain and then the data inside Swiss borders are replaced
by our own detailed data. More than 70% of our forests are coniferous. We have
ten different tree species in the inventory. Most abundant ones are Norway Spruce
and fir. We calculate the emission rates using temperature and irradiance data
from MM5 output.
W. Gong:
You showed that SOA from isoprene has very small contribution. You
do consider isoprene as SOA precursor in your mechanism, don't you?
Answer:
Yes, SOA formation mechanism from isoprene is included in the
mechanism. However, isoprene emissions are very low with respect to mono-
terpene emissions in Switzerland. Terpenes dominate biogenic emissions. There
are relatively low isoprene emissions coming from oak trees in southern
Switzerland.
