System for assessing Aviation's Global Emissions (SAGE). Version 1.5 : validation assessment, model assumptions and uncertainties
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2005-09-01
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Edition:Final Report
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Abstract:The United States (US) Federal Aviation Administration (FAA) Office of Environment and Energy (AEE) has
developed the System for assessing Aviation’s Global Emissions (SAGE) with support from the Volpe National
Transportation Systems Center (Volpe), the Massachusetts Institute of Technology (MIT) and the Logistics
Management Institute (LMI). Currently at Version 1.5, SAGE is a high fidelity computer model used to
predict aircraft fuel burn and emissions for all commercial (civil) flights globally in a given year.
This means that the model is capable of analyzing scenarios at from a single flight to airport, country,
regional, and global levels. SAGE is able to dynamically model aircraft performance, fuel burn and
emissions, capacity and delay at airports, and forecasts of future scenarios. FAA’s purpose in developing
SAGE is to provide the international aviation community with a tool to evaluate the effects of various
policy, technology, and operational scenarios on aircraft fuel use and emissions. FAA is committed to the
continued development and support of SAGE. Although the results from the model have been made available
to the international aviation community, SAGE is currently an FAA government research tool and has not
been released to the general public.
As part of SAGE Version 1.5 development, this document was developed to provide a detailed description of
the model’s validation assessment. The assessment was undertaken to quantify the uncertainties of the
model’s methods, data, and assumptions at both the modular and system levels. It is expected that this
assessment will be used as the basis for future SAGE development and validation work.
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