Environmental Engineering Reference
In-Depth Information
4. Summary
The results from the CAPTEX and ETEX simulations provide useful information
about model performance for state-of-the-practice Lagrangian models as well as
insight into the strengths and weaknesses in the technical formulations of the
modeling systems under review. The overall model
RANK
scores show that the
NOAA HYSPLIT model consistently performs the best of the seven simulations
conducted as part of this study, followed closely by SCIPUFF and the beta version
of the MM5-FLEXPART model. ETEX-1 results identify a potential issue with
the advection predictions of CALPUFF that warrant further investigation.
Acknowledgments and Disclaimer
The authors gratefully acknowledge Roland Draxler of the
National Oceanic and Atmospheric Administration for his assistance with the HYSPLIT model
and Mr. Douglas Henn of Sage Management, Inc. and Dr. Aijun Deng of the Pennsylvania State
University for their assistance with the SCIPUFF modeling system. This research presented here
has been performed as part of a joint research effort between EPA Region 7 and EPA's Office of
Air Quality Planning and Standards. This work constitutes a contribution to the EPA Air Quality
Program. Although it has been reviewed by EPA and approved for publication, it does not neces-
sarily reflect their policies or views.
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