Environmental Engineering Reference
In-Depth Information
J. Bartnicki: One important application of the model for decision making purpose
is the calculation of source-receptor relations. Do you have any suggestion how
this type of model application can be evaluated?
Answer: There are several possibilities to evaluate the model response to
emission changes, although only to a limited extent. A possibility is to analyse
the weekend efffect- when emissions are reduced-, or specific situations as the
fast changes in emissions after the fall of the wall, or the reduced emissions in
summertime.
S. Lu: Your talk adresses how to use observations-via model evaluation- to
improve models. The interaction should be two-way, the modelling community
can feedback to the measuering community on how to set up/configure
observations network to improve our understanding.
Answer: I do agree with you. Especially by using data assimilation techniques
like Ensemble Kalman Filtering, you can in an objective way determine the
impact that a certain number of stations have on the determination of an overall
air quality field, and in this way determine the optimal lay-out of a network.
S. Galmarini: Can we assume that the evaluation classification recently discussed
at an EPA-workshop and within AQMEII can become a common working
platform for the North American and European modelling communities?
Answer: Yes, we can. In my opinion this classification in operational, diagnostic,
dynamic and probabilistic model evaluation is very usefull, and we should use
it in the future to direct our actions and studies. And I am looking forward to
work together with you on this subject.
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