1. MCI Break-Out Coordination Time Lines Deliverables Topic Groups –Subregional intensive group –Top-down group –Bottom-up group

2. Deliverables Atmospheric CO2 and CH4 concentration, isotopic ratios, trace gases Flux and stock maps from April 2007 through 2008 growing season using bottom-up and top-down approaches –Time Step: weekly to annual –Spatial scale: focus on spatial extent of region identified in science plan but with fuzzy boundaries for top-down; scale of modeling will vary from 1x1 degree to 1 km grid –Bottom-up and top-down will have layers for each investigation –May need to aggregate for comparisons Comparison of top-down and bottom-up, and explanation of differences Mechanistic Understanding of Fluxes/Stock Changes

3. Subregional Intensives Participation of subregional studies contigent on fundin for serveral studies –Key sites not funded for campaign: Bondville, CHeAS, Minneapolis/St. Paul –However data are available for the past which can be used to inform bottom-up model Data used as input to bottom-up models (e.g., Schmid, Liu) and as model evaluation Coordination of measurements for flux tower data assimilation Expect individual investigators to request additional data needs for their bottom-up modeling

4. Bottom-Up Group Model inter-comparisons represents a significant but important challenge –Stocks and fluxes –MAST-DC can provide some uniformity in data inputs –Independent model evaluation data Ameriflux data are assimilated for at least approaches OCO?? Timeline is sensitive to the availability of model input data. Deliverables 6-9 months after all input data available –MODIS products (Morisette) about 6 months after year of interest –Daymet weather (Thornton) about 1.5 yrs after year of interest –Crop Maps (USDA) by October following growing season –NASS Yield data (USDA) by next spring –NRI land use histories (USDA) about 2 years

5. Top-Down Group Data Comparisons –Aircraft to towers –Calibrated short towers to tall towers –Multi-Species Model Comparisons –Flux fields and concentrations –Transport Model Comparison Data to Model Comparisons – if not used in the inversion (aircraft)

6. Time Lines for MCI Campaign Subregional Intensives Top-Down Bottom-Up Tall Tower Measurements Sampling Campaign AprAugDecAprAugDecAprAugDecAprAug Aircraft Profiles 2007 200820092010 Ring of Towers Calibrated Flux Towers Aircraft Campaign MCI and Arm CART (1-3 wks) Data Stream Intercom- parisons (data and models) Top-Down v. Bottom-Up Input Data Available Intercom- parisons (models, 2003) Top-Down v. Bottom-Up Ameriflux Gracenet Previous Year Fluxes Previous Year Fluxes 2007 Est- imates

7. Needs/Gaps Some sub-regional studies will not overlap with campaign –e.g., Bondville Bottom-Up Model Inter-comparisons –Common dataset and evaluation data Top-Down vs. Bottom-Up Comparisons –Support for the analysis Continue discussion and planning by teleconferences on an as need basis, probably every 2-4 weeks Workshops for topic groups synthesis activities –1-2 per year Other Needs/Gaps???