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Tag Archives: Searchinger
Life Cycle Analysis, International Land Use Change and Uncertainty
Bruce Dale, University Distinguished Professor of Chemical Engineering at Michigan State University, shared this presentation that he gave during a webinar hosted by the North Central Bioeconomy Consortium. In it, he highlights the number of factors in Life Cycle Analysis and Indirect Land Use Change (ILUC) models that produce uncertainty – in other words, if the assumptions or data for these factors change, how much do the results change. Dale is primarily examining the “carbon Read More >
Does Oil Cause Indirect Land Use Change?
I’ve been paying a lot of attention recently to new analyses attempting to model carbon emissions from indirect land use change, which is the conversion of land needed to maintain an international balance of supply and demand for agricultural crops, an effect that is heavily determined by crop prices. These new analyses raise a question about the existing assumption that oil has zero effect on land use change. Tim Searchinger, the lead author of one Read More >
Biofuels & Climate Change
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Tags: biofuel, California Air Resources Board, carbon debt, Climate Change, environmental protection agency, ethanol, Greenhouse Gas Emission, greenhouse gas emissions, indirect land use change, lifecycle analysis, Oil prices, rainforest, renewable fuel standard, Searchinger, Thomas Hertel, Tim Searchinger, U.S. EPA, Wallace Tyner
Tags: biofuel, California Air Resources Board, carbon debt, Climate Change, environmental protection agency, ethanol, Greenhouse Gas Emission, greenhouse gas emissions, indirect land use change, lifecycle analysis, Oil prices, rainforest, renewable fuel standard, Searchinger, Thomas Hertel, Tim Searchinger, U.S. EPA, Wallace Tyner
More Models to Measure Land Use Change
As the U.S. EPA and California’s Air Resource Board seek to implement their respective Renewable and Low-Carbon Fuel Standards, economists continue to refine models to measure and predict indirect land use change emissions associated with biofuels. Many of the original critiques of the Searchinger paper in Science that initiated this debate commented on the uncertainty in attributing indirect land use change to biofuels. Prof. Roger Sylvester-Bradley of ADAS UK Ltd., for instance, summarizes many of Read More >
Biofuels & Climate Change
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Tags: California Air Resources Board, Climate Change, environmental protection agency, Greenhouse Gas Emission, greenhouse gas emissions, indirect land use change, Land Use, Land Use Change, life cycle analysis, lifecycle analysis, Low Carbon Fuel Standard, renewable fuel standard, Searchinger, U.S. EPA, Wallace Tyner
Tags: California Air Resources Board, Climate Change, environmental protection agency, Greenhouse Gas Emission, greenhouse gas emissions, indirect land use change, Land Use, Land Use Change, life cycle analysis, lifecycle analysis, Low Carbon Fuel Standard, renewable fuel standard, Searchinger, U.S. EPA, Wallace Tyner
How to Measure Land Use Change
Both the U.S. EPA and California’s Air Resources Board are currently considering how and whether to incorporate the indirect effects of U.S. biofuels production on carbon emissions from land use change in other parts of the world. The Renewable Fuel Standard passed by Congress in December 2007 requires inclusion of “significant emissions from land use changes” as part of the life cycle analysis of carbon emissions from biofuels. The Low Carbon Fuel Standard adopted by Read More >
It’s Carbon Payback Time
A recent study from researchers at the University of Wisconsin takes another look at the “carbon debt” models proposed by Searchinger and Fargione in ScienceXpress earlier this year. Searchinger and Fargione argued that biofuel development in the United States and Europe would lead to the destruction of rainforests and grassland in Brazil and other tropical climates, which would of course release massive amounts of carbon into the atmosphere (See earlier posting). The new study takes Read More >
