Author:
Publisher: DIANE Publishing
ISBN: 1428900608
Category :
Languages : en
Pages : 452

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Author: Madeleine Strum
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Madeleine Strum
Publisher:
ISBN:
Category : Air
Languages : en
Pages :

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Book Description
The Emissions Modeling System for Hazardous Air Pollutants (EMS-HAP) Version 2.0 is a series of computer programs that process emission inventory data for toxic air pollutants for subsequent air quality modeling using either the Assessment System for Population Exposure Nationwide (ASPEN) dispersion model or the Industrial Source Complex Short Term Version 3 (ISCST3) dispersion model. In addition, EMS-HAP allows you to project base-year emissions to a future year for use in these air quality models.

Author:
Publisher:
ISBN:
Category : Air
Languages : en
Pages :

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Author:
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 554

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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1108

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Author:
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 2762

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Author: U S Environmental Protection Agency
Publisher: CreateSpace
ISBN: 9781500706784
Category :
Languages : en
Pages : 120

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Book Description
The U.S. Environmental Protection Agency (EPA) developed a year 2007 air quality modeling platform in support of the Tier 3 Motor Vehicle Emission and Fuel Standards. The air quality modeling platform consists of all of the emissions inventories, ancillary files needed for emissions modeling, and the meteorological, initial condition, and boundary condition files needed to run the air quality model. This platform uses all Criteria Air Pollutants (CAPs) and a select set of Hazardous Air Pollutants (HAPs). This document focuses on the emissions modeling components of the 2007 platform, including the emission inventories and the ancillary data and the approaches used to transform emission inventories for use in air quality modeling. The Tier 3 modeling platform was developed by implementing specific modifications to the "CAP-BAFM 2007-Based Platform, Version 5," also known as the "2007v5" platform. The 2007v5 platform was used to support the Regulatory Impact Assessment (RIA) for the 2012 Final National Ambient Air Quality Standards (NAAQS) for particulate matter less than 2.5 microns (PM2.5). The Technical Support Document (TSD) "Preparation of Emissions Inventories for the Version 5.0, 2007 Emissions Modeling Platform" contains many additional details on the aspects of the Tier 3 and 2007v5 platforms that are shared. The TSD is available from the Emissions Modeling Clearinghouse website, http: //www.epa.gov/ttn/chief/emch/, under the section entitled "Particulate Matter (PM) NAAQS (2007v5) Platform." The appendices available for the 2007v5 TSD that do not reference the specific PM NAAQS modeling cases are also relevant to the "Tier 3" platform. Many emissions inventory components of the Tier 3 air quality modeling platform are based on the 2008 National Emissions Inventory version 2, hereafter referred to as the "2008 NEI," with updated inventory data for some emission sectors. In particular, a version of the Motor Vehicle Emissions Simulator (MOVES) designed to represent the impacts of the Tier 3 Motor Vehicle Emission and Fuel Standards (MOVESTier3FRM) was used to generate emission factors for onroad mobile sources. The emissions modeling tool used to create the air quality model-ready emissions from the emission inventories was the Sparse Matrix Operator Kernel Emissions (SMOKE) modeling system (http: //www.smoke- model.org/index.cfm) version 3.5 beta. Emissions were created for 36 km and 12 km national grids. The gridded meteorological model used for Tier 3 is the Weather Research and Forecasting Model (WRF, http: //wrf-model.org) version 3.3, Advanced Research WRF (ARW) core (Skamarock, et al., 2008). The WRF Model is a mesoscale numerical weather prediction system developed for both operational forecasting and atmospheric research applications. WRF was run for 2007 over a domain covering the continental United States at a 36 km and 12 km resolution with 35 vertical layers2. This meteorological run was different than the one used for the 2007v5 platform.

Author: Jessica Lincoln-Oswalt
Publisher:
ISBN: 9781614707240
Category : Air
Languages : en
Pages : 0

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Book Description
The authorities and responsibilities of the Environmental Protection Agency (EPA) derive primarily from a dozen major environmental statutes. This book provides a concise summary of one of those statutes, the Clean Air Act. It provides a brief history of federal involvement in air quality regulation and of the provisions added by legislation in 1970, 1977 and 1990. It also explains major authorities contained in the Act as well as key terms and references for more detailed information on the Act and its implementation.

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309159474
Category : Science
Languages : en
Pages : 251

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Book Description
Technologies and Approaches to Reducing the Fuel Consumption of Medium- and Heavy-Duty Vehicles evaluates various technologies and methods that could improve the fuel economy of medium- and heavy-duty vehicles, such as tractor-trailers, transit buses, and work trucks. The book also recommends approaches that federal agencies could use to regulate these vehicles' fuel consumption. Currently there are no fuel consumption standards for such vehicles, which account for about 26 percent of the transportation fuel used in the U.S. The miles-per-gallon measure used to regulate the fuel economy of passenger cars. is not appropriate for medium- and heavy-duty vehicles, which are designed above all to carry loads efficiently. Instead, any regulation of medium- and heavy-duty vehicles should use a metric that reflects the efficiency with which a vehicle moves goods or passengers, such as gallons per ton-mile, a unit that reflects the amount of fuel a vehicle would use to carry a ton of goods one mile. This is called load-specific fuel consumption (LSFC). The book estimates the improvements that various technologies could achieve over the next decade in seven vehicle types. For example, using advanced diesel engines in tractor-trailers could lower their fuel consumption by up to 20 percent by 2020, and improved aerodynamics could yield an 11 percent reduction. Hybrid powertrains could lower the fuel consumption of vehicles that stop frequently, such as garbage trucks and transit buses, by as much 35 percent in the same time frame.