# Presentation: 874227

## Opening Remarks

- 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**

## Overview

**Welcome**
**Workshop Context -          ****	****	****	****Why are we here?**
**Expected Outcomes**

## Welcome to Silver Spring

***Workshop on Multiscale Atmospheric Dispersion Modeling within the Federal Community***

**June 6 - 8, 2000**
**Town Center Hotel**
**Silver Spring, Maryland**

## Welcome to Silver Spring

**OFCM Informational**
**Brochure**

**Metro System Guide**

**Maps and Dining Guide**

***In your ***
***      ******folder...***

## Why are we here?

***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

- CNN/KATC-TV photo

## Sources

_**Natural**_

_**Anthropogenic**_

- Dust/Sand Storms

- Pesticides

- Oil Spills & VOCs

## Cross-cutting agency interests...

_**Natural**_

_**Anthropogenic**_

- Dust/Sand Storms

- Pesticides

- Volcanic Ash

- Allergens

- Lightning-Induced
- Forest Fire Smoke

- Human-Induced Forest Fires

- Pollution

- 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**

## Expected Outcomes

## Expected Outcomes

**Verification, Validation, and Approval Methods**

**Selecting subsets to meet applications needs**

**Session 4**

## 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**

## Slide 11

## 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**

**Workshop on Multiscale Atmospheric Dispersion Modeling within the Federal Community**

## Workshop Goal

**Improve agency coordination in the development and operational use of dispersion models.**

## 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**

## Session 1

**User Requirements for Dispersion Modeling**
**Agencies’ current requirements**
**How current requirements are being met**
**New/unmet requirements**

**Tuesday morning**

## 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**

## 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**

## 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**

## Session 5

**Summary and Wrap-Up**
**Panel and breakout chairs report results and recommendations**
**Next steps/follow-on actions**
**Closing remarks**

**Thursday morning**

## Let’s get started...

**Session 1:  User Requirements for Dispersion Modeling**

**Session Chair:  Rickey Petty, DOE**
**Rapporteur:  Roger Stocker, DOD/USN**

## Slide 21