1. NACP Site Synthesis 30 Models47 Flux Tower Sites Do models match observations? If not, why?

2. Presentations Tuesday Comparison of observed and modeled carbon and energy fluxes for agricultural sites under NACP site-level interim synthesis (Lokupitiya et al.) Using AmeriFlux Observations in the NACP Site-Level Interim Synthesis (Schaefer et al.) Comparing Simulated and Observed Gross Primary Productivity (Schaefer et al.) Sensitivity of modeled carbon pools and fluxes to biases in reanalysis meteorology forcing data (Ricciuto et al.) Wednesday How much model complexity is necessary to accurately predict peatland CO2 fluxes? (Sulman et al.) Evaluation of Site and Continental Terrestrial Carbon Cycle Simulations with North American Flux Tower Observations (Raczka and Davis) Impact of data assimilation on terrestrial carbon cycle model performance from site to regional scales (Ricciuto et al.) Evaluating Terrestrial Biosphere Models: Comparing Simulated and Observed Net Ecosystem Exchange (Schwalm et al.) Results from the NACP Site-Level Interim Synthesis (Schaefer et al.) Thursday A Modeling and Synthesis Thematic Data Center for the North American Carbon Program (Cook et al.)

3. NACP Interim Synthesis: Regional and Continental Models and Observations Objective: a synthesis of results from a broad range of investigations: state of our understanding of the carbon balance of North America Approach: collecting “off the shelf” data from various regional / continental-scale results: inverse models, terrestrial biosphere (‘forward’) models, inventories and observations (including remotely-sensed data sets)

4. NACP Interim Synthesis: Regional and Continental Models and Observations  Presentations:  McGuire, 4:45p Thursday  Post, 8:30a Friday  Tian, 9:50 Friday  Posters:  Huntzinger, F-124  MsTMIP, F-125  Raczka, F-130  Cook, H-176  NACP: “State of the Science in Assessing the North American Carbon Budget” I & II

5. C CO 2 C Atmospheric Inversions Inventories Mid-Continent Intensive Synthesis Lead: Stephen M. Ogle Natural Resources Ecology Laboratory, Colorado State University

6. MCI Campaign Region Pre-Campaign Atmospheric Measurement Network Campaign Atmospheric Measurement Network

7. Inventory Posters H-184: MCI Inventory Overview, Ogle F-129: Cropland Inventory Evaluation, Ogle G-167: US Cropland Carbon Budget, West H-172: Crop NPP, Bandaru H-170: Assessing US Carbon Budget, Zhu G-160: Verifying US Soil C Inventory, Spencer Oral Presentation 9:50AM, Thursday, Fossil Fuel Emissions Uncertainty, Gurney

8. Atmospheric Inversions Posters E-119: Transport Model Comparison, Andrews H-182: Network Design for High Resolution Inversions, Lauvaux Oral Presentation 4PM, Thursday – Overview of Inversions, Schuh 4:15PM, Wednesday – Impact of expanding network on atmospheric inversions, Mueller

9. Reconciling Inventory & Inversion Inversion Inventory Inversion Inventory Oral Presentation 4:45PM, Wednesday – Comparing, Attributing and Reconciling Inversion and Inventory Estimates, Cooley

10. ULTIMATE GOAL: To quantify the short and long-term impacts of disturbance and climate change on the terrestrial carbon budget of North America WORKING GROUP 3: MODELING OF THE IMPACTS OF DISTURBANCE OBJECTIVE 1: Provide reliable information on the spatial and temporal extent of forest disturbances and the severity of these disturbances WORKING GROUP 1: QUANTIFYING FOREST DISTURBANCES OBJECTIVE 2: Quantify the impacts of disturbance on processes controlling carbon cycling in forests WORKING GROUP 2: IMPACTS OF FOREST DISTURBANCE OBJECTIVE 3: Quantify the impacts of other disturbances and longer-term climate change on the terrestrial carbon budget of North America WORKING GROUP 4: WOODY ENCROACHMENT AND HNL SOILS

11. Disturbance Synthesis Presentations Tues 11 am - What have we learned from forest tower flux data following disturbance? – Amiro et al. Wed 11 am posters #W-221: Carbon emissions from North American wildland fires: a review of methods and comparison of results from five case studies – French et al. #E-102: Recent Rates of Forest Harvest and Conversion in North America - Jeff Masek et al. #D-94: Observations and assessment of forest carbon recovery following disturbance in North America - Goetz et al. Wed 4 pm - The impacts of biotic disturbances on carbon budgets of North American forests – Hicke et al. Wed 4:15 pm - Vulnerability of high latitude soil carbon in North America to disturbance – Grosse et al. Wed. 5 p.m. - Impacts of Disturbance on the North American Carbon Budget - a Synthesis - Kasischke et al.

12. Coastal Carbon Interim Synthesis Activity Five regional preliminary budgets East Coast and Gulf of Maine – Wei-jun Cai Gulf of Mexico – Paula Coble Great Lakes – Galen McKinley Arctic – Jeremy Mathis West Coast – Simone Alin Initiated at July 2008 OCB Meeting Presentations given in special sessions at the 2009 and 2010 OCB Meeting. Science meeting held in 2010 before AGU. In 2011, work will continue with smaller meetings for each region. Science meeting associated with the 2012 OCB meeting.

13. Fluxes of Interest Interfacial fluxes: Inputs from land of DOC, POC, and DIC Air-sea: Exchange of CO 2, rainwater DOC Sedimentary fluxes: POC deposition, DOC & DIC exchange, benthic productivity, groundwater, hydrocarbon seeps Shelf-break exchange: DIC, DOC, POC Internal fluxes: Primary production Respiration Net community production Poster Session III – Wed.11 AM - 12 PM (Side Meeting 5:15 – 6:15, Conti) C-64: Lake Superior's influence on regional carbon budgets (McKinley et al.) C-65: Coastal Carbon Fluxes along the U.S. Eastern Continental Shelf Derived from a Coupled Biogeochemical-Circulation Model (Friedrichs et al.) D-74: Carbon System Dynamics in the Large River-Dominated Northern Gulf of Mexico Coastal Margin (Lohrenz et al.)

14. NACP non-CO2 GHG Synthesis Project OVERVIEW Goal: synthesis of data and models to define the spatial/temporal distributions and sources of CH 4, CO 2 and N 2 O over N. America. 1.Archive data for concentrations, and a priori source fields. 2.Determine regional/continental sources

15. Participants (partial list) Steve Wofsy (chair) Arlyn E. Andrews Colm Sweeney Doug Worthy Hanqin Tian Anna Michalak Dale Hurst Adam Hirsch Bill Munger 15 Graduate students &c Archana Dayalu Scot Miller Leland Werden Undergraduates: Talya Havice Max Brondfield Others: MAST DC &c

16. DATABASE MAST-DC website (ORNL)—public AGAGE (2000-2008); continuous CFCs, HFCs, HCFCs, CH 4, N2O, SF 6... ** CSIRO Gaslab (2000-2001); flask data for CH 4, CO 2, CO and H 2 COBRA (2003 & 2004); C & F data: CO 2, CO, CH 4, N 2 O, CFCs, CH 3 CCl 3, CCl 4, SF 6, O 3. WMO/Environment Canada(2000-2008); C & F data for CH 4, CO, CO 2. (SF 6, N 2 O,H 2 ) INTEX A&B (2004&2006); C&F data for numerous gases and aerosols Irvine Latitude Network (2000-2004); F data methane, NMHCs, alkyl nitrates, and chlorinated carbon compounds. NOAA (2000-early 2009); C & F data for halocarbons, trace gases, CFCs, N 2 O, CH 4, CO 2, H 2, 13C and 18O isotopes SCRIPPS (2000-2001); Flask data for CO 2 Tyler UCI (2000-2001); Flask data for CO, CH 4, and their isotopes. Additional data sets—password protected DLEM (2000-2008); simulated daily flux values for N 2 0 and CH 4 across North America NOAA Aircraft (2000-2008); PFP data from vertical profiles at NOAA tower sites, measuring CH 4, N 2 O, CO, SF 6, and CO2. (internal only) ** TCCON (2004-2009); continuous data for CO2 only. O2, CH4, N2O, CO, H2O, and HDO data awaiting calibrations. (on password protected site) NOAA Tall Towers Data Sets (~2000-2009); Programmable Flask Packages (PFP) data, (awaiting final level QC.) ** Data sets expected to become available: ARCTAS (2008); CA Central Valley; CLASSIC (2007) WMO Environment Canada Flights (2003-2005) NACP MCI; START-08; TexAQS Comprehensive; uniform, accessible format. http://nacp.ornl.gov/int_synth_greenhouse.shtml

17. Related Posters and Talks at NACP Local signals of CO 2, CH 4 and N 2 O in the San Francisco and Sacramento regions of California. – Modeling greenhouse gas balance induced by nitrogen addition in terrestrial ecosystems of the United States The GHG Balance of Terrestrial Ecosystems in North America in the early 2010s: Magnitude and Attribution Novel approaches to estimating regional CH4 fluxes from a very tall tower Comparison of Global Inundated Wetland Products Generated Through Multiple Resolution Microwave Remote Sensing Data Sets Methane emission from natural wetlands in northern mid-high latitude since 1980s Spectroscopic analysis and assessment of the critical role of geologic greenhouse gases from fossil fuel fugitive methane emissions towards global warming Biomass Burning Emissions of Methane - Source Sensitivity to Algorithm Assumptions Episodic CH4 emissions from a temperate fen Comparison of a priori-based and geostatistical inverse methods for estimating methane emissions from Central California 17

18. Summary of model results: Time series from WLEF (US Midwest) and Fraserdale (Hudson Bay Lowlands), COBRA aircraft data: using a high resolution Lagrangian Particle Dispersion Model ("STILT") N 2 O – Bayesian and geostatistical inverse analysis both give excellent simulations of observed time series. Results confirm the prevalence of agricultural sources, define the season cycle. Emissions larger than most bottom-up. CH 4 – Confirm excellent simulation of time series at tall towers, and demonstrate the importance of regional wetlands and surprisingly strong industrial emissions. Annual budgets and error estimates determined for CH 4 and N 2 O in the US.