Dear Sir/Madam,

We are developing the Kunming Transportation model based on
the framework of the Asiana model. We want to use IBC tool to calculate the
impact of the air quality and human health. However we are confused about the
initial results shown by the Kunming Transportation Model.(Kunming is a city in
China.)

1. The results showed that all the pollutants caused by the
transportation in Kunming City would reach the peak at some time and decline
afterward. However the IBC tool showed that both of the concentration of PM2.5
and the deaths would keep growing. How to interpret this diametrically opposed
results? Is that because the IBC tool is not applicable at the city scale?

2. What's the
relationship between the total amount of the pollutants calculated from the
demand branch and the concentration of PM2.5 and
the deaths in the indicators branch?