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Emissions Factors Emissions Modeling Clearinghouse

Emissions Modeling Clearinghouse

The Emissions Modeling Clearinghouse (EMCH) has been designed to support and promote

emission modeling activities both internal and external to EPA. Through this site the EPA intends

to distribute emissions model input formatted inventories based on the latest versions of its

National Emission Inventory databases. In addition to the emissions data, this site will be used to

document and distribute the Agency's latest versions of the ancillary files used to support the

temporal, spatial, speciation, and projection of these emissions. Although numerous links to other

sources of emissions, modeling factors, and emissions models are available through this site, the

EPA does not actively support the use of any one inventory, set of factors, or emissions models

for input development to air quality modeling.

Site Directory

Particular Matter (PM) NAAQS (2007v5 Platform)

Mercury and Air Toxics Standards Final Rule

Heavy Duty Greenhouse Gas Rule - Emission Data

Cross-State Air Pollution Rule Final

2008-based Modeling Platform

2005-based Modeling Platform

2002-based Modeling Platform

2001-based Modeling Platform

Emissions Modeling Software Tools

Emissions Modeling Ancillary Data (Non-inventory

data)

Related Links to Emissions Modeling Resources

Particular Matter (PM) NAAQS

Final Rule Regulatory Impact Assessment

2007v5 Emissions Platform Technical Support Document (TSD) 12/14/2012

2007v5 Emissions Platform TSD Appendices (12/14/2012)

SMOKE Flat File Format Definitions (12/14/2012)

2007 and 2020 Emissions Data Files and Summaries

Mercury and Air Toxics Standards Final Rule

Regulatory Impact Assessment

Documentation

Emissions Modeling for the Final Mercury and Air Toxics Standards Technical

Support Document (PDF 98 pp, 154 KB)

Technology Transfer Network

Clearinghouse for Inventories & Emissions Factors

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Last updated on 3/19/2013
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Data files

Appropriate and Necessary finding, national Hg risk analysis

These data and associated documents are the same as were used for the MATS

proposal, since the Hg risk analysis was not remodeled for the final rule.

Documentation

Emissions Overview Memo (12/1/2011) (PDF, 10pp 198KB)

See 2005-Based Platform, Version 4.1 (below) for documentation on 2005

These two documents summarize the development of the 2005 and focus on

2016 emissions used for the Mercury and Air Toxics Standard proposed rule.

Proposed Toxics Rule Technical Support Document - Emissions Inventories.

(PDF 61 pp, 1784 KB)

Appendices to the Proposed Toxics Rule Technical Support Document. (PDF

42 pp, 992 KB)

Memorandum on the Clean Air Mercury Rule Hg speciation factors (PDF 61 pp,

230K)

Spreadsheet on the Clean Air Mercury Rule speciation factors (XLS 226K)

Data Files - See 2005-Based Platform, Version 4.1 (below) for data files 2005 and

2016

Appropriate and Necessary finding, non-Hg risk analysis

Information is available on the main MATS page .

Additional Technical Information.

Heavy Duty Greenhouse Gas Rule - Emission Data

Data Files

2008-based Modeling Platform (2007v5)

EPA has developed a 2007 modeling platform that is based on data from the 2008 National

Emissions Inventory Version 2. 2007 was modeled instead of 2008 due to the nature of the air

quality issues in the two years. Many emissions inventories for the 2007v5 modeling platform use

2008 emissions data. The modeling files provided for point sources contain the stack parameters

used. The emission inventories for the 2007v5 platform are primarily in the Flat File 2010, also

knows as the FF10 format (see definition file below and SMOKE documentation for more

information). FF10 files support storing monthly and annual emissions in a single file, and also

support hourly and daily point and nonpoint emission inventories. Note that code tables

referenced by the inventories can be decoded using the EIS Code Tables.

Draft v5 Platform and 2008 NEI V2-based Emissions Data files (4/24/2012)

2007v5 Platform and 2020 Emissions Data Files used for PM NAAQS Final (12/14/2012)

SMOKE Flat File Format Definitions (12/14/2012)

2008NEIv3 Annual and Speciated Flat Files (3/19/2013)

2005-Based Modeling Platform

This platform includes emissions data and tools that are in development for supporting future EPA

analyses. This platform includes support for criteria air pollutants (CAPs), mercury, and some

hazardous air pollutants (HAPs), and is used to prepare emissions for air quality models. The HAPs

supported are HCl, Cl, mercury, and also benzene, acetaldehyde, formaldehyde, methanol (the

latter four are known as "BAFM").

The only platform version that should be used for mercury emissions data and modeling is
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Version 4.1.

Disclaimer: The data available at this time are not necessarily the final data for the 2005-

based platform. EPA may choose to create another version of the 2005 platform at a later

time, without notice.

Cross-State Air Pollution Rule Final CAP - BAFM 2005-Based Platform,

Version 4.2 (do not use for Mercury)

Cross-State Air Pollution Rule Final Emissions Inventory Documentation

Emissions Inventory Final Rule Technical Support Document (6/28/2011; pdf

112 pp)

Appendices for Emissions Inventory Final Rule Technical Support Document

(6/28/2011; pdf 46 pp)

Platform v4.2 README

Emission Summaries (last updated 6/29/2011)

2005 Emissions Data Files

2005 emissions for CAPs and selected HAPs in SMOKE input format

Seasalt Emissions (last updated 6/11/2010)

Ancillary SMOKE Data Files (last updated 6/29/2011)

All emissions modeling ancillary data files for 2005, 2012, and 2014 processing

in SMOKE-ready format, excluding meteorology data.

2012 Emissions Data Files (last updated 6/29/2011)

2014 Emissions Data Files (last updated 6/29/2011)

SMOKE run scripts for the v4.2 platform for 2005, 2012, and 2014 (last updated

6/29/2011)

CAP-BAFM 2005-Based Platform, Version 4.1 (use for Mercury)

Documentation

Readme files

Technical Support Document: Preparation of Emissions Inventories for the

2005-Based Platform, Version 4.1 Platform (3/16/2011; pdf 82 pp)Purpose

memo for future year emissions data (4/15/2010)

Appendices for 2005 Emissions Technical Support Document(3/16/2011; pdf

19 pp)

2005 Emissions Data Files (last updated 3/21/2011)

2005 emissions for CAPs and HAPs in SMOKE input format

All emissions modeling ancillary data files for 2005 and 2016 processing,

excluding meteorology data. These files are provided in SMOKE-ready format

only at this time.

Seasalt Emissions (updated 3/21/2011)

Future-year inventory data files

2016 emissions data

2016 control and projection data in SMOKE input format

2005 and 2016 Custom SMOKE run scripts for v4.1 platform (updated 3/21/2011)

CAP-BAFM 2005-Based Platform, Version 4 (do not use for Mercury)

Documentation

Readme files

Purpose memo for future year emissions data (4/15/2010)

Technical Support Document: Preparation of Emissions Inventories for the

2005-Based Platform, Version 4 Platform (7/7/2010; pdf 72 pp., 0.75MB)

Appendices for 2005 Emissions Technical Support Document (pdf 13 pp)

2005 Emissions Data Files (last updated 6/11/2010)

2005 NEI, version 2 for CAPs and HAPs in SMOKE input format

All emissions modeling ancillary data files for 2005 and 2020 CAP processing,

excluding meteorology data. These files are provided in SMOKE-ready format

only at this time.

Seasalt Emissions (updated 6/11/2010)
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2007 Emissions Data Files (last updated 6/28/2010)

2007 daily fires and associated documentation

Future-year inventory data files

2020 emissions data

2015 and 2020 control and projection data in SMOKE input format

2005 and future year Vehicles Miles Travelled (VMT) for 2005, 2015 and 2020

Microsoft® Excel® summary files (last updated 4/6/2010)

Includes summary data for 2005 and 2020

2005 Biogenic summary files (Zipped Microsoft® Excel®; last updated 5/11/2010)

2005 Custom SMOKE run scripts (updated 6/11/2010)

2002-Based Modeling Platform

This platform includes emissions data and tools that supported EPA analyses. This platform

supports both criteria air pollutants (CAPs), mercury, and other hazardous air pollutants (HAPs) to

prepare emissions for air quality models.

CAP 2002-Based Platform, Version 3

Documentation

Technical Support Document: Preparation of Emissions Inventories for the

2002-Based Platform, Version 3, Criteria Air Pollutants (PDF 77 pp., 0.93MB)

Appendices for Technical Support Document: Preparation of Emissions

Inventories for the 2002-Based Platform, Version 3, Criteria Air Pollutants (PDF

142 pp., 0.97MB)

EGU Temporal Allocation approach (PDF 14kb)

Data Files (last updated 1/17/2008)

2002 NEI, version 3 for CAPs in SMOKE input format

All emissions modeling ancillary data files for base-year CAP processing that

work with the 2002 v3 NEI, excluding meteorology data. These files are

provided in SMOKE-ready format only at this time

2009, 2014, 2020 and 2030 emissions data

Microsoft Excel summary files with both 2002 and future years included

Custom SMOKE run scripts

Mercury-only 2002-Based Platform, Version 3

Documentation (in progress)

Data Files (last updated 1/17/2008)

CAP NEI files are the same as the CAP-only platform and should be obtained

from the CAP 2002-Based Platform, Version 3 described above.

2002NEI, version 3 for mercury, chlorine, and hydrochloric acid (HCI) in

SMOKE "ORL" input format. These are the pollutants needed for supporting

mercury modeling with the current version of the CMAQ model.

There are no additional ancillary files for this case. All ancillary files to process

these emissions should be obtained from the CAP and HAP 2002-Based

Platform, Version 3, described below.

CAP and HAP 2002-Based Platform, Version 3

Documentation

The 2002-Based Multi-Pollutant Modeling Platform Report, Volume III: Air

Toxics (PDF 676KB)

Appendices (PDF 680KB)

Data Files (last updated 1/17/2008)

CAP NEI files are the same as the CAP-only platform and should be obtained

from the link above

2002 NEI, version 3 for HAPs

All 2002 SMOKE ancillary data files for base-year CAP-HAP needed in addition

to the files provided with the CAP-only platform, excluding meteorology data.

Custom SMOKE run scripts
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2001-Based Modeling Platform

The 2001 modeling platform includes emissions data (but not tools) that were used for previous

EPA analyses, as listed below for each platform. Version 2 of this platform supports only CAP

emissions, while Version 1 supports both CAPS and mercury.

CAP 2001-Based Platform, Version 2

Includes 2001 and future baseline emissions data used for the EPA analyses shown below.

These data files generally do not include rule-specific emissions files for rule-specific base

case runs or control strategies. The complete list of rules and RIAs using this version of the

platform is:

- Regulatory Impact Analysis for Final PM NAAQS

- Regulatory Impact Analysis for Proposed 03 NAAQS

- Locomotive Marine Rule Proposal (EPA Office of Transportation and Air Quality)

- Analysis of Clean Diesel programs (EPA Office of Transportation and Air Quality)

- Section 753 Report of the 2005 Energy Policy Act.

Documentation

This platform has been documented in Chapters 1 and 2 of the PM NAAQS

Regulatory Impact Assessment, which is available online at

http://www.epa.gpv/ttn/ecas/ria.html.

Data Files (last updated July 2007)

2001 NEI for CAPs in SMOKE "IDA" input format

All emissions modeling ancillary data files for base-year CAP processing that

work with the 2001 NEI, excluding meteorology data. These files are provided

in SMOKE-ready format only at this time.

2015 and 2020 inventories in SMOKE "IDA" input format.

Data Files in support of 03 NAAQS Proposal RIA

2020 Base Case inventory data files specific to 03 NAAQS Proposal RIA

CAP and Hg 2001-Based Platform, Version 1

Includes 2001 and future baseline emissions as well as SMOKE ancillary data. These data

were used for the following analyses.

- Clean Air Interstate Rule (CAIR)

- Clean Air Mercury Rule (CAMR)

- Clean Air Visibility Rule (CAVR), commonly known as the "BART" rule

- Clear Skies Legislation analysis

- Control of Emissions from Onroad Spark-Ignition Engines and Equipment, Proposed

Rule (EPA Office of Transportation and Air Quality)

Documentation

The CAP part of this platform has been documented in the CAIR Emissions

Inventory Technical Support Document

The Mercury part of this platform has been documented in the CAMR

Emissions Inventory TSD, called Emissions Inventory and Emissions Processing

for the Clean Air Mercury Rule.

Data Files:

The data files for the CAP part of the platform are available here.

Mercury data, based on 1999 National Emission Inventory.

Emissions Modeling Ancillary Data

Latest release ancillary files

Smoke format

CSV format
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Fugitive Dust Fractions

Temporal Allocation of Emissions

Spatial Allocation of Emissions

Chemical Speciation of Emissions

Emission Projections

Biogenic Emissions

Related Links to Emissions Modeling Resources

Training Course - Preparation of Emission Inventories for Modeling

Community Modeling and Analysis System (CMAS) Center

The Modeling and Analysis System (CMAS) is an approach for supporting communitybased air quality modeling. The CMAS Center distributes and supports features of

VMAS for the global modeling community. Its activities include an on-line help desk,

model clearinghouse, training, conferences, development assistance for adding new

features for the supported CMAS products, model documentation access, modelrelated research, and a data clearinghouse.

Sparse Matrix Operator Kernel Emissions (SMOKE) modeling system

Emissions modeling system used by EPA to prepare emissions for input to various air

quality models. Includes the BEIS3.13 biogenic emissins model.

Emissions Modeling System (EMS), 2001

Emissions modeling system for preparation of emission inventory data from National

Inventory Format (NIF) 3.0 for input to air quality models. Includes the BIOME3

biogenic emissions.

Consolidated Community Emissions Processing Tool (CONCEPT)

The new and open source CONCEPT Emissions Processor is under development to

support the development of State Implementation Plans for fine particles, regional

haze, and ozone by state and local agencies.

Hourly Continuous Emissions Monitoring (CEM) data in SMOKE-ready format.

This site contains hourly CEM data prepared for SMOKE version 2.3 and later for all

available CEM data.