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LCFS Indirect Land Use Change Expert Workgroup Carbon Emission Factors Subworkgroup June 2010 Update.

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Presentation on theme: "LCFS Indirect Land Use Change Expert Workgroup Carbon Emission Factors Subworkgroup June 2010 Update."— Presentation transcript:

1 LCFS Indirect Land Use Change Expert Workgroup Carbon Emission Factors Subworkgroup June 2010 Update

2 Membership ARB staff representative: Kevin Cleary Uwe Fritsche (Oeko-Institut, Germany) Holly Gibbs (Stanford University) Keith Kline (ORNL) Steffen Mueller (University of Illinois at Chicago) Richard Nelson (Kansas State University) – Co-chair Don O’Connor (representing CDFA, S&T Consulting) Michael O’Hare (University of California, Berkeley) Sonia Yeh (University of California, Davis) – Co-chair

3 Task 1. Identify and compare the existing datasets and C emission factors Consult experts and conduct internal comparative review of datasets used for direct and indirect LULUC analyses – EPA Renewable Fuel Standard 2010 (EPA) – CARB-Woods Hole Research Center (WHRC) – FAO – Forestry Resources Assessment 2005 (FRA 2005) – 2006 IPCC Guidelines for National Greenhouse Gas Inventories (IPCC 2006) – New IPCC Tier-1 Global Biomass Carbon Map for the Year 2000 Global Above-and Below-ground Living Biomass Carbon Density (R&G) – C stock estimates for tropical landscapes (Gibbs 2008)

4 Task 1. Identify and compare the existing datasets and C emission factors Compare assumptions about C stock (biomass C and soil C), conversion, and fluxes – Spatial resolution of land types and associated cover and the corresponding data on C stock (biomass C and soil C), fluxes (sources and sinks) in the reference and disturbed scenario – Degradation factors to existing forestland – Rate and duration (and the spatial resolution) of biomass and soil C loss after conversion – Rate and duration (and spatial resolution) of C uptake (+/-) after land use conversion in the corresponding converted land use type(s).

5 Task 2. Identify important GHG emission sources and sinks that are ignored in previous analysis Additional fertilizers that will be required to improve yield Other inputs changes (e.g energy inputs +/-) associated with yield and/or management changes Credits for crops that sequester N2O GHG emissions from land that stayed in the same use category but changed management practices Accounting of harvested wood Other non-GHG aerosols and gases, such as ozone precursors, carbon monoxide (CO), nitrogen oxides (NO x ), sulfur oxides (SO x ), and black carbon (BC) Should albedo be considered? Mode of clearing (burning vs. smoldering vs. mechanical) affects the BC and CO emission factors

6 Potential Outside Experts Suggested by subEWG members: – Brent Sohngen/OSU (Global land use /biomass emission factors and databases) – Richard Houghton (WHRC) (Global soil and biomass C stock and emission factors) – Dr. Charles Rice, Kansas State University – Dr. Tristam O. West, ORNL – Sassan Saatchi (NASA JPL) - tropical to global biomass maps using satellite data – Experts from MIT (Emission factors used in EPPA model global land use/emission model) – Experts involved in the European studies (Emission factors most related to EU ILUC studies) – Susan Tarka Sanchez, Life Cycle Associates, LLC from CEC FFCA Deliverable (review of EPA/CARB methodology and lit review) – Johan Six and Mark Delucchi (UCD) (N2O emissions) – Nancy Harris, Sean Grimland and Sandra Brown/Winrock – Experts from Woods Hole (Global soil and biomass C stock and emission factors) – Gregg Marland, ORNL (Global soil and biomass C stock and emission factors) Suggested by stakeholders: – Rob Mitchell (rob.mitchell@ars.usda.gov)rob.mitchell@ars.usda.gov – Heather Young (hlyoungs@berkeley.edu)hlyoungs@berkeley.edu – Marta Chrusch

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