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Air Emissions Modeling

2016 Hemispheric Emissions Modeling Platform

This technical support document (TSD) describes how the emission inventories were prepared by the U.S. Environmental Protection Agency (EPA) for hemispheric air quality modeling with the Community Multiscale Air Quality (CMAQ) for air toxics and criteria air pollutants that represents the year 2016 based on the 2014 National Emissions Inventory (NEI), version 2 (2014NEIv2). This emission modeling platform represents an update to the 2011 hemispheric platform. This document focuses on the emissions modeling component of the 2016 “alpha” modeling platform, which includes the emission inventories, the ancillary data files, and the approaches used to transform inventories for use in air quality modeling. Many emissions inventory components of this air quality modeling platform are based on the 2014NEIv2, including projections to year 2016 for some emissions sectors.  This platform uses publicly available emissions that cover the globe and integrates these emissions with regional inventories to create a single consistent platform.

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