1. Attribution of Haze Workgroup Organizational Meeting
Overview & Logistics
March 29-30, 2004
San Diego, CA

2. 2004 Attribution of Haze Project
Introductions
Who are you ?
What do you do at your job ?
Why are you here ?
Agenda Review
Today – share information & expectations
Tomorrow –
What do we want to produce/deliver ?
How ? When ?
Administrative stuff – Contractor support, Co-Chairs, Meeting schedule
Process + Technical Data Sources
Transition to presentations & discussion

3. Attribution of Haze Project
Conceptual Model
Reality
Attribution
Attribution of Haze Project
Apportionment
Receptor Modeling &
Trajectory Analyses
Gridded
Dispersion
Model Analyses
Existing
2002 EIs
Pure, Idle Speculation

4. Definitions
As they apply to emissions sources for WRAP technical analysis projects (from Webster’s):
Apportionment – to divide and share out according to a plan, to make a proportionate division or distribution
Attribution – to explain by indicating a cause

5. 2004 AoH Project Data Sources
Source apportionment modeling simulations from the Regional Modeling Center
Receptor-oriented source contribution analyses of aerosol and meteorological monitoring data from the Causes of Haze Assessment project
Existing and refined emissions inventories from the Dust, Emissions, and Fire Forums
Special-purpose source attribution studies such as BRAVO, et cetera
EPA technical guidance documents and analyses
Journal publications, and workshop/conference reports addressing emissions and visibility impairment

6. 2004 AoH Project Deliverables
Identify:
Geographic source areas of emissions that contribute to impairment at each mandatory federal and tribal Class I area
Mass and species distributions of emissions by source categories within each contributing geographic source area
The amount of natural and manmade emissions affecting each Class I area

7. 2004 AoH Project Deliverables
Provide:
Documentation of the assumptions, methods, and uncertainties used in the integrated analyses of modeling, monitoring, and emissions data.
Succinct, clear summaries for policymakers, of the estimated areas and sources of impairment for each Class I area, including the associated uncertainty

8. Schedule January – March April – June July – September
Organizational meetings – phone/in-person
Develop scope of work for contractor support + hire
April – June
Review/discuss existing source attribution studies (BRAVO, et cetera)
Contractor to identify data available for AoH project
July – September
Review/discuss work products from RMC, CoHA, and EIs
Assign expert review topics

9. Schedule, cont. October – December January 2005
Continue review/discussion of work products from RMC, CoHA, and EIs
Review/discuss draft reports from expert reviewers
Review first draft of AoH report prepared by contractor
January 2005
Publish final 2004 AoH report
Make plan for subsequent workgroup activities

10. 2004 AoH Project: Biogenics & Windblown Dust Data
Data Source:
WRAP Regional Modeling Center (RMC)
Method:
2002 MM5 meteorology simulation creates gridded emissions
BEIS3 for biogenics, including ammonia, land use-based
WRAP WB Dust Model also based on land use classifications
Both use 1x1 km land use data
Emissions summed to 12x12 or 36x36 km cells
Domain (see graphic)
Emission released in first layer of AQ model, then dispersion factors define transport
Products:
Dust, Ammonia, and Biogenics EIs by grid cell
Can be mapped to county/reservation boundaries

11. 2004 AoH Project: Biogenics & Windblown Dust Data
High resolution 12 km nested grid for the WRAP region, shown in blue, to be used in the WRAP 2002 modeling. Domain size is 207 columns by 186 rows.

12. 2004 AoH Project: International Emissions Canada, Mexico, Off-shore
Canada – 2000 point/area/mobile – fire?
Mexico – first comprehensive EI (ERG 1999 EI for 6 northern states)
Off-shore – through RMC (Caribbean, oil/gas production, et cetera – from EPA/West Coast states)
Modeling Domain Boundary Conditions – through RMC (GEOS-CHEM model run by Jacob, et. al.)

13. 2004 AoH Project Contractor Support
Contractor to:
Support coordination of the collection, compilation, review, and formatting of data described earlier
Subcontract with external expert reviewers to provide reports/presentations on specific analysis topics
Support in-person and conference call meetings of the AoH workgroup
Prepare draft and final AoH report