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Technical Memorandum

Development of MANE-VU Mobile Source Projection 

Inventories for SMOKE/MOBILE6 Application

June 2006, NESCAUM

I. Background

The MANE-VU Emissions Inventory workgroup chose to utilize in-house expertise to develop 

future year mobile source emission estimates for use in Ozone, PM2.5, and Regional Haze SIP 

modeling. Jung-Hun Woo, NESCAUM, and Megan Schuster, MARAMA compiled all the 

information necessary to run Mobile6 with Sparse Matrix Operator Kernel Emissions (SMOKE) 

based on the state submitted data. The purpose of this document is to describe how member 

states and NESCAUM/MARAMA prepared the mobile source activity data (i.e. non-link based 

VMT & Speed), Mobile6 scenario input files, and accompanying files in SMOKE/MOBILE6 

format in support of future year projection inventory development. 

II. Procedure

2.1. Base year (Y2002) inventory file 

The MANE-VU 2002 base year SMOKE/M6-ready mobile source files served as a starting point 

for projection inventory development; hence, the procedures employed for the development of 

these files are summarized here. E.H Pechan, a contractor for MANE-VU, compiled MANEVU 2002 mobile source inventories. The onroad emissions inventory was compiled from data 

supplied by the MANE-VU State agencies in the form of onroad emissions input data or 

emissions inventories either directly to MANE-VU or to EPA through their CERR submittal. 

States provided information in one or more of the following ways: (1) an onroad emission 

inventory submittal to EPA, (2) MOBILE6 inputs and VMT data in National Mobile Inventory

Model (NMIM) format to EPA, (3) portions of MOBILE6 inputs or full MOBILE6 input files 

and supporting files plus VMT to EPA, or (4) portions of MOBILE6 inputs or full MOBILE6 

input files and supporting files plus VMT to MANE-VU. Different procedures were followed in 

developing the MANE-VU 2002 onroad emission inventory depending upon how the data were 

submitted. All States provided information on 2002 onroad activity in the form of vehicle miles 

traveled (VMT) estimates, although the level of detail of the VMT data varied by State. After 

integration of all these data, Pechan compiled onroad mobile source files in a SMOKE/Mobile6 

ready format. 

2.2. Preparing technical guidance to create SMOKE/Mobile6 ready information

As described above, States had the ability and experience to develop their mobile source 

inventory data in NMIM, stand-alone Mobile6, and emissions inventory format. They, however, 
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were not familiar with procedures for integrating files and converting them into a model ready 

format. To assist the State workgroup in the creation of an inventory in (as close as possible to)

the SMOKE/Mobile6–ready format, NESCAUM/MARAMA developed a technical guidance

document 

(http://www.marama.org/visibility/Inventory%20Summary/FutureEmissionsInventory.htm). In 

the document, we also explained how State workgroup could download the year 2002 files 

(ftp.marama.org) and update them to create projection inventory files.

In the technical guidance, States were requested to supply NESCAUM and MARAMA with the 

data described below, under Required Data. States also had the option to supply NESCAUM 

and MARAMA with the information listed under Optional Data.

REQUIRED DATA: 

1) SMOKE/IDA Activity File 

a. Go to MARAMA FTP site (above), click on Onroad/ Final Smoke Files/

MANEVU_2002_mbinv.txt

b. Open the MANEVU_2002_mbinv.txt file

c. Delete all data that is not your state’s. 

d. Update file with new header and annual VMT by SCC for 2009 

e. Name file: state_2009_mbinv.txt

f. Repeat steps ‘b’ through ‘e’ for years 2012 and 2018 

2) MOBILE6 input scenario files

a. Go to MARAMA ftp site, click on MANE-VU Onroad/ Final Smoke Files/ 

MANEVU_2002_SMOKE_M6_InputFiles_12032004.zip

/m6_2002/month/statecounty.in

b. Provide updated statecounty.in files for each month and year 2009, 2012 and 2018 

c. Use same naming convention as the 2002 files – statecounty.in

OPTIONAL DATA:

1) If a state wants to, they can update registration data to either 2004 or 2005 

a. Go to MARAMA FTP site - Onroad/ Final Smoke 

Files/MANEVU_2002_SMOKE_M6_ExternalFiles.zip

b. As an example, open file 0900002.reg (or any files with extension .reg)

c. There is a long header followed by the real data. Real data starts at the line called 

REG DIST. (See example file below). 

d. States should update the registration data by vehicle class and age for 2004 or 

2005.

e. If you update this data and change the name of the file, make sure the M6 input 

scenario file (required data from above) includes the correct file name for 

registration data (REG DIST). 
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2.3. States data submittal and compiling future inventory

As States submitted their projected mobile source files as listed above, NESCAUM started to 

integrate Y2018 files and convert them into regional (i.e. MANE-VU) files. The following 

subsections summarize the compilation process for activity input, scenario input files, external 

files and other SMOKE related files.

1) Activity input data (VMT/Speed)

- All member states submitted VMT and speed data. There were minor issues in data 

formatting but nothing major.

- DE and MA re-submit VMT file at October, 2005 (MA change 2002 VMT, too)

- Merge update 2002 MBINV file, ptpro/ptref, scenario input files for CT and NJ

2) Scenario input files

- VT used the same input file for all the counties. So, only 36 input files (i.e. 12months * 3 

future years) were provided. VT set 050001 as a reference county (MCREF).

- VT uses January as reference month for August processing. VT has confirm that they want to 

change reference month for Apr-Sep as July instead of January.

- ME submitted all monthly data in a file. NESCAUM split it by month.

- MA submitted only three input files (Avg Summer day, Typ Ozon day, Avg Winter day) 

which were submitted to PECHAN to develop base year input files. NESCAUM created *.in 

files by copying MANE-VU 2002 base-year *.in files, then change years into 

2009/2012/2018 and the link to the new external files (LEV2CERT.D, LEV2EVAP.D, 

LEV2EXH.D).

- CT submitted *.IN files on 9/22/2005. The “> I/M DESC” file path had been removed.

- RI scenario input files have 044yyc.IN name convention that are supposed to be 

044ccc.IN(yy stands for 2digit year and ccc stands for 3digit county FIPS). They are renamed 

and populated for 12months.

- Some states(MD) put "REBUILT EFFECTS" after “SCENARIO RECORD” line. They were 

moved ahead of it.

- PA put “ANTI-Tamp” records in external files that need to be in Scenario input files. 

NESCAUM wrote a Fortran code (pa_input_4_override.f) and a C-shell 

script(cp_antitamp_4_pa.csh) to put those records in scenario input files

- NJ has 2012 year tag in 2009 scenario input files. NESCAUM put them back to 2009.

- For 2002 scenario input files update (10/27/2006), CT puts 0.07 Rebuild effect, NJ didn't put 

any. So, I put 0.1 to NJ 2002 input files.

- Putting future year rebuild effect is a modeling decision that needs to be a constant 

throughout the region. So NESCAUM didn’t correct that in file compilation. Modelers’ put 

10% for the base year (2002) and 90% for the future years(2009/2012/2018). NYSDEC put 

0.9 into year 2009 files and NESCAUM put 0.9 into year 2018 files before SMOKE/Mobile6 

processing.

3) External files 

 - VT uses some of NY state external files (e.g. NYLEV2.D, NYL2EXH.D, NYL2EVAP.D, 

and NYL2CERT.D)

 - RI didn't provide any future-specific external files. 2002 MANE-VU M6 external files were 

used
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- MA and ME used the same named files which have identical contents to each other:

LEV2CERT.D, LEV2EVAP.D, and LEV2EXH.D 

- DE, PA, and NJ submitted the same named files which have identical contents to each other: 

NLEVNE.D

- DC file produce warnings (but not errors) from SMOKE/Mobile6 test run

“User Supplied HC IM240 Cutpoint of 0.500 for year 1 and Vehicle Type 1 is Too Low 

and has been Reset to 0.80 g/mi.” Consulted with DC and get a confirm that it’s ok to use it 

as-is.

4) Other SMOKE related files

 - MCREF/MVREF

 Update MANEVU_2002_mcref.txt for Maine because Penobscot county (23019) was not 

found from MAINE_pointerfile.xls. Tammy Gould @ Maine confirmed that Penobscot (019)

has to be added where Piscataquis (021) is. Correct this problem on both 

MANEVU_2018_mcref.txt and MAINE_pointerfile.xls. MANEVU_2018_mvref.txt is 

updated by deleting non-ref counties in ME.

 - MTPRO/MTREF

 Add CT and NJ's temporal profile/x-ref to 2018 MANEVU files

 

 

III. Sample model run

Even though NESCAUM had not run SMOKE/Mobile6 for any of the complete projection

years, we ran a day worth of each year: 1) to test compatibility of compiled data with 

SMOKE/Mobile6 system and 2) to examine trends in submitted projection data. As seen in the 

Figure 1 and Figure 2, VMT increases 10~20% compared to the base year (i.e. year 2002) for the 

most of states whereas speed remains the same except for NY and PA. 

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Figure 1. VMT(upper) and Speed (lower) for one day (August 1) of year 2002, 2009, 2012, and 

2018

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Figure 2. NOx(upper) and CO (lower) emissions for one day (August 1) of year 2002, 2009, 

2012, and 2018

Despite VMT increases, NOx and CO emissions decrease dramatically due to future-year 

control programs. Emissions decrease a bit more slowly after 2009 given fewer anticipated 

controls during post-2009 years. 

NOx reductions seen from Figure 2 can be verified in the spatial (by county) NOx emission 

maps which were calculated using SMOKE/Mobile6 for August 1 of each year. As region wide 

emissions decreased by years, emissions from high emission areas (e.g. urban centers) decreased, 

as well. 
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Figure 3. Spatial distribution of emissions from SMOKE/Mobile6 (August 1, NOx)