1. Opening Remarks Samuel P. Williamson Federal Coordinator Office of the Federal Coordinator for Meteorological Services and Supporting Research June 6 - 8, 2000 Samuel P. Williamson Federal Coordinator Office of the Federal Coordinator for Meteorological Services and Supporting Research June 6 - 8, 2000 Workshop on Multiscale Atmospheric Dispersion Modeling within the Federal Community

2. Overview Welcome Workshop Context - Why are we here? Expected Outcomes

3. Welcome to Silver Spring Workshop on Multiscale Atmospheric Dispersion Modeling within the Federal Community June 6 - 8, 2000 Town Center Hotel Silver Spring, Maryland

4. Welcome to Silver Spring OFCM Informational Brochure Metro System Guide Maps and Dining Guide In your folder...

5. Why are we here? May 27, 2000 - Eunice, Louisiana Eunice, LA. (Reuters) - Hazardous-chemical specialists plan to put out fires still burning in two tank cars of plastics Tuesday and then begin moving some of 30 freight cars that derailed Saturday in southwest Louisiana, forcing 2,500 people from their homes. Residents were ordered to flee from a 2-1/2-mile radius around the site within minutes.... Dense smoke poured from the scene for almost 24 hours, police said.... dichloropropane, acrylic acid, methyl chloride, toluene, diisocyanate, sodium hydroxide, hexane, and phenol. AP Photo/Civil Air Patrol - Rock Palermo CNN/KATC-TV photo

6. Sources Natural Anthropogenic Dust/Sand Storms Pesticides Allergens Lightning-Induced Forest Fire Smoke Lightning-Induced Forest Fire Smoke Human-Induced Forest Fires Pollution Nuclear, Biological, and Chemical Nuclear, Biological, and Chemical Oil Spills & VOCs Ozone Depleting Chemicals Volcanic Ash (c)1995 Softkey International, Inc.

7. Cross-cutting agency interests... Natural Anthropogenic Dust/Sand Storms Pesticides Volcanic Ash Allergens Lightning-Induced Forest Fire Smoke Lightning-Induced Forest Fire Smoke Human-Induced Forest Fires Pollution Nuclear, Biological, and Chemical Nuclear, Biological, and Chemical Oil Spills & VOCs Ozone Depleting Chemicals Emergency Response Economic Vitality National Security Transportation Safety and Efficiency Regulatory Activities Public Health Quality of Life

8. Expected Outcomes Requirements Session 1 Capabilities Session 2 ? Barriers Session 3

9. Expected Outcomes Verification, Validation, and Approval Methods Selecting subsets to meet applications needs Session 4

10. Summary Potential for ATD modeling to touch every aspect of our lives - effects demonstrated daily Growing concerns over chemical and biological terrorism demand attention This workshop will let us assess where we are and set a direction for the future

12. Opening Remarks Dr. Darryl Randerson Chief, Special Operations and Research Division, Air Resources Laboratory, NOAA Chairman, Joint Action Group for Atmospheric Transport and Diffusion June 6, 2000 Dr. Darryl Randerson Chief, Special Operations and Research Division, Air Resources Laboratory, NOAA Chairman, Joint Action Group for Atmospheric Transport and Diffusion June 6, 2000 Workshop on Multiscale Atmospheric Dispersion Modeling within the Federal Community

13. Workshop Goal Improve agency coordination in the development and operational use of dispersion models.

14. Workshop Objectives State current modeling requirements and capabilities Specify new requirements/unmet needs Describe existing methods for validation, verification, and approval of current models and future needs Describe a process for establishing model subsets for specific applications Find solutions to agency-identified technical barriers Identify opportunities for leveraging model development and model validation, verification, and approval State current modeling requirements and capabilities Specify new requirements/unmet needs Describe existing methods for validation, verification, and approval of current models and future needs Describe a process for establishing model subsets for specific applications Find solutions to agency-identified technical barriers Identify opportunities for leveraging model development and model validation, verification, and approval

15. Session 1 User Requirements for Dispersion Modeling –Agencies’ current requirements –How current requirements are being met –New/unmet requirements Tuesday morning

16. Session 2 Agency Dispersion Modeling Capabilities –What models are currently used for operations? –How does modeling capability meet agency requirements? –How are models evaluated? –Who are the users; what products are distributed; what are training requirements? –Research/development for unmet user needs Tuesday afternoon

17. Session 3 Technical Barriers to Dispersion Modeling –Turbulence and the stable boundary layer –Air-surface exchange –Probabilistic modeling –Mesoscale and surface layer transport –Neighborhood-scale processes Wednesday morning

18. Session 4 Model Validation, Verification, and Approval; Model Subsets –Develop a framework for the validation, verification, and approval of dispersion models –Identify “subsets” of scientifically and technically sound models suitable for different operational scenarios Wednesday afternoon

19. Session 5 Summary and Wrap-Up –Panel and breakout chairs report results and recommendations –Next steps/follow-on actions –Closing remarks Thursday morning

20. Let’s get started... Session 1: User Requirements for Dispersion Modeling Session Chair: Rickey Petty, DOE Rapporteur: Roger Stocker, DOD/USN