1. Research Progress Discussions of Coordinated Emissions Research Suggestions to Guide this Initiative Focus on research emission inventories Do not interfere with regulatory inventory development process Build on existing approaches to emissions development and observation Facilitate new directions in collaborative emissions research Adapt emission products for research community Encourage active feedback between development and observation groups Encourage multiple approaches to development and evaluation Bring an openness to new findings and encourage sharing of results Assess resources needed for collaborative efforts Carry out periodic synthesis activities and progress assessments First Workshop, 4 December 2009, NOAA DSRC, Boulder, CO Coordinated US Initiative on Emissions Research Where We Are Where We Want to Go

2. Some Proposed Goals for this Initiative First Workshop, 4 December 2009, NOAA DSRC, Boulder, CO Coordinated US Initiative on Emissions Research Enhance access to and usefulness of emissions data Evaluate inventories using multiple top- down methods Encourage exchange between evaluation and development communities Investigate impacts of emissions on AQ and climate Spatial extent: US or North America Parallel regional efforts Temporal extent: Most recent 20-30 years Evaluate trends Spatial extent: US or North America Parallel regional efforts Temporal extent: Most recent 20-30 years Evaluate trends

3. Straw-man Proposals for Short-term Goals First Workshop, 4 December 2009, NOAA DSRC, Boulder, CO Coordinated US Initiative on Emissions Research Enhance access to and usefulness of emissions data Data access and consistency Data clearinghouse Inventories for multiple years with consistent methodology Inventories for different sectors Inventories for different regions Input data (activities, EFs, land-use) Observations data for evaluations Data access and consistency Data clearinghouse Inventories for multiple years with consistent methodology Inventories for different sectors Inventories for different regions Input data (activities, EFs, land-use) Observations data for evaluations Data usefulness Format transfer tools File readers Regridding and extraction tools Analysis and statistical tools Speciation tools Visualization tools Data usefulness Format transfer tools File readers Regridding and extraction tools Analysis and statistical tools Speciation tools Visualization tools

4. Straw-man Proposals for Short-term Goals First Workshop, 4 December 2009, NOAA DSRC, Boulder, CO Coordinated US Initiative on Emissions Research Evaluate inventories using multiple top- down methods Encourage exchange between evaluation and development communities Evaluate merged inventory of criteria pollutants and CO 2 Carry out merge for several key years Add other GHGs to merged inventory Temporal variations: annual, seasonal, day-of-week, diurnal Evaluate merged inventory of criteria pollutants and CO 2 Carry out merge for several key years Add other GHGs to merged inventory Temporal variations: annual, seasonal, day-of-week, diurnal Evaluate speciation of US sources VOCs and PM Urban, industrial, agriculture, BB Variability between individuals in each source type Temporal variability of source types Evaluate speciation of US sources VOCs and PM Urban, industrial, agriculture, BB Variability between individuals in each source type Temporal variability of source types Evaluate consistency in emissions of aerosol and ozone precursors Differences for different sources Evaluate consistency in emissions of aerosol and ozone precursors Differences for different sources

5. Straw-man Proposals for Short-term Goals First Workshop, 4 December 2009, NOAA DSRC, Boulder, CO Coordinated US Initiative on Emissions Research Investigate impacts of emissions on AQ and climate Impacts of emission changes Emission changes: economic activity, control strategies, land-use Quantify impacts on AQ & climate prediction Do observations confirm predicted AQ & climate changes? Impacts of emission changes Emission changes: economic activity, control strategies, land-use Quantify impacts on AQ & climate prediction Do observations confirm predicted AQ & climate changes? Impacts of emission uncertainties Evaluate uncertainties in emission inventories at different scales Quantify impacts on AQ & climate prediction Impacts of emission uncertainties Evaluate uncertainties in emission inventories at different scales Quantify impacts on AQ & climate prediction Impacts of spatial variability of emissions Source and speciation variations for different regions Observe and quantify impacts on AQ & climate Impacts of spatial variability of emissions Source and speciation variations for different regions Observe and quantify impacts on AQ & climate

6. Questions to Guide Discussions (from the Agenda) First Workshop, 4 December 2009, NOAA DSRC, Boulder, CO Coordinated US Initiative on Emissions Research What are short-term (6 months, 1 year, 2 years, 3 years) goals with well-defined limits that could be achieved by this collaboration? What inventory products are needed/desired that are not available now, and what are the key characteristics needed to improve research and assessment activities? Dimensions of these questions include: Focus on emissions only or also drivers? Timescales? Sectoral coverage? Update frequency? Is this a repository, an analysis effort, and/or a data production effort? Target resolution? Species: multi-pollutant approaches, air quality, greenhouse gases, toxics? What evaluation approaches show the most promise? How can we make better use of observational resources? What observations are most needed? What is the next step? White paper? Proposal? Are funding agencies willing to support this activity? What can we do within our own agencies to promote this activity? Follow-up meeting focusing on specific issues?