This paper empirically examines the vehicle type regulation that was introduced under the Automobile Nitrogen Oxides–Particulate Matter Law to mitigate air pollution problems in Japanese metropolitan areas. The vehicle type regulation effectively sets various timings of vehicle retirement by the first registration year and by type. However, there w
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As the United States seeks to reduce greenhouse gas (GHG) emissions from motor vehicles and to lessen its dependence on imported oil, biofuels are gaining increasing attention as one possible solution. This paper offers an introduction to the current state of play for biofuels: the technologies used in their production, their GHG emissions, and ass
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The long-term context for California's transportation systems is one of significant transformation. Neither “business as usual” or slow incremental change are likely to represent the future because of climate change mitigation and energy supply issues. Although uncertainly about these factors makes long term planning difficult, regional transportat
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Panelists identified key strengths and limitations of alternative policy approaches that should be of assistance to the Congress in weighing the potential benefits and costs of different policies for addressing climate change. Many panelists said that a cap-and-trade program would be more effective in achieving a desired level of greenhouse gas emi
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National Science and Technology Council (U.S.). Subcommittee on Global Change Research
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2008-05-01
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The U.S. Climate Change Science Program (CCSP) released its Strategic Plan in 2003.This Revised Research Plan, in compliance with Section 104(a) of the Global Change Research Act of 1990, is an update to the 2003 Strategic Plan. It reflects both scientific advances since the publication of the 2003 Strategic Plan and the evolving needs of society.
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On October 23-24, subject matter experts on particulate matter (PM) gathered at Allerton Park in Monticello to exchange ideas and experiences in project level hotspot analysis of PM, including monitoring and compliance. The attendees included staff from five Midwestern state Departments of Transportation (DOTs), metropolitan planning organizations,
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American Association of State Highway and Transportation Officials
2008-04-01
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This primer is an introduction to the issue of climate change and its implications for transportation policy in the United States. Its purpose is to outline the current thinking of governmental agencies, researchers, and advocacy groups on the issue of climate change and transportation. The conclusions stated in those reports do not necessarily ref
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This report summarizes the results of the workshop held in Seattle, Washington on March 6 and 7, 2008, on planning for climate change. Representatives from 13 MPOs shared their experiences and challenges in this area. The ultimate goal of the workshop was to allow senior staff from a variety of MPOs to come together to share information and learn f
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Climate affects the design, construction, safety, operations, and maintenance of transportation infrastructure and systems. The prospect of a changing climate raises critical questions regarding how alterations in temperature, precipitation, storm events, and other aspects of the climate could affect the nation's roads, airports, rail, transit syst
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The Oregon Department of Transportation recognizes that the transportation sector in Oregon generates significant greenhouse gases. In fact, transportation sources are responsible for over a third of emissions in the state – roughly the same share as the electric power sector. The department understands that in order to meet the greenhouse gas redu
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Generally, the climatic impact of air traffic (of which a substantial part may be due to contrails and contrail cirrus) today (year 2000) amounts to 2-8% of the global radiative forcing associated with climate change. Due to the projected increase in air traffic [ICAO, 2007] the relative importance of air traffic is going to increase drastically. I
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In this subject-specific white paper, we present a literature survey of past and current developments regarding the impact of contrails and contrail cirrus on the radiation field of the Earth's atmosphere and climate. A number of recommendations for future long-term and short-term actions that are required to comprehend and quantify this important
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This SSWP summarizes important results in key areas since the last major aircraft impacts assessment [IPCC 1999]. Significant progress has been made in the areas of: Measurements of emissions of chemi-ions, NOx, and trace organic species from aircraft engines; Observations constraining the lightning and convective fluxes of NOx to the upper troposp
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The global commercial aircraft fleet currently numbers about 10,000 and flies several billion kilometers per year while burning more than 100 MT of fuel per year at high temperatures producing mostly water and CO2. However, NOx (=NO+NO2), other minor gaseous species, organic aerosols from unburnt fuel and soot and ions are also injected at cruise a
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The effect of aircraft emissions on the climate of Earth is one of the most serious long-term environmental issues facing the aviation industry (IPCC, 1999; Aviation and the Environment – Report to the United States Congress, 2004). Aviation emissions, including gases and particles in the upper troposphere and lower stratosphere, have both direct a
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The impact of climate-altering agents on the atmospheric system is a result of a complex system of interactions and feedbacks within the atmosphere, and with the oceans, the land surface, the biosphere and the cryosphere. Climate metrics are used as a proxy to simplify interpretation of the complex science and associated feedbacks to indicate the u
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Exploiting a rich data set of new vehicle registrations in 22 U.S. Metropolitan Statistical Areas from 1999 to 2006, we analyze the determinants in the demand for hybrid vehicles and examine government programs that aim to promote the adoption of hybrid vehicles. We find that both the recent run-up in gasoline prices from 1999 and federal income ta
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The United Nations Framework Convention on Climate Change (UNFCC) entered into force in 1994 with the objective for ‘stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system'. The Kyoto Protocol (1997) set out to reduce emissions of most long lived gr
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This paper examines the changes to engineering design practice that might occur given climate-induced changes in environmental factors. A project design is separated into the individual components that might be affected by changing environmental conditions: subsurface conditions, materials specifications, cross sections and standard dimensions, dra
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Systems Operations and Management activities of transportation agencies-both state and local have the objective of making the most effective use of the existing roadway capacity by improving efficiency (throughput, speed, safety), minimizing the service impacts of any disruption (crashes, weather), and providing special emergency services (evacuati
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