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Follow-On Study of Transportation Fuel Life Cycle Analysis: Review of Current CARB and EPA Estimates of Land Use Change (LUC) Impacts.
| 题名： | Follow-On Study of Transportation Fuel Life Cycle Analysis: Review of Current CARB and EPA Estimates of Land Use Change (LUC) Impacts. |
| 作者： | Tyner, W. E.; Taheripour, F.; Hoekman, S. K.; Broch, A.; Liu, V.; Lyons, J. |
| 关键词： | Greenhouse (GHG), Transportation, Carbon intensity (CI) values, Fuel life cycle, Carbon dixoide, Renewable fuel standard (RFS), Induced land use change(ILUC), Biofuels, California Air Resources Board (CARB) |
| 摘要： | The primary goal of this study was to perform a critical review of the revised ILUC methodology developed by CARB for its 2015 rulemaking. That revised methodology resulted in much lower estimates of GHG emission increases due to ILUC associated with biofuel production: carbon intensity (CI) values (in units of gCO2eq/MJ) dropped from 30 to 19.8 for corn ethanol, from 62 to 29.1 for soy biodiesel, and from 46 to 11.8 for cane ethanol, compared to the methodology used in the 2009 rulemaking. The secondary goal of the study was to review EPA’s new GHG values to determine whether they include any changes to the agency’s original ILUC estimates developed as part of the rulemaking process that established the RFS regulations. The review of CARB’s revised methodology addressed the assumptions made by the agency in (1) performing GTAP modeling, and (2) developing the AEZ-EF model to replace the Woods Hole Research Center emission factors. The review focused primarily on the implications of the new methodology with respect to the primary biofuels currently in use (corn and sugarcane ethanol as well as soy biodiesel), although specific issues related to other biofuels were also assessed |
| 总页数： | Tyner, W. E.; Taheripour, F.; Hoekman, S. K.; Broch, A.; Liu, V.; Lyons, J. |
| 报告类型： | 科技报告 |
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