Record Display for the EPA National Library Catalog


Main Title MOBILE4 sensitivity analysis : final report /
Author Smith, Mark G. ; Smith, M. G. ; Wilson, T. T.
Other Authors
Author Title of a Work
Wilson, Terry T.
CORP Author Alliance Technologies Corp., Chapel Hill, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher U.S. Environmental Protection Agency, Office of Research and Development,
Year Published 1991
Report Number EPA/600/8-91/032; PB91-191312; EPA-68-D9-0173
Stock Number PB91-191312
OCLC Number 36142758
Subjects Automobiles--Motors--Exhaust gas--Mathematical models ; Air--Pollution--Mathematical models ; MOBILE4 (Computer program)
Additional Subjects Mathematical models ; Highway transportation ; Ozone ; Carbon monoxide ; Emission factors ; Vehicular traffic ; Air pollution ; Air pollution control ; Analyzing ; Graphs(Charts) ; Tables(Data) ; Velocity ; Temperature ; Maintenance ; Inspection ; MOBILE4 model ; Sensitivity analysis
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA 600-8-91-032 NVFEL Library/Ann Arbor, MI 11/07/2011
NTIS  PB91-191312 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 46 p. in various pagings : charts ; 28 cm.
The report identifies the MOBILE4 input variables that can have significant impacts on highway vehicle emissions inventories and gives priorities for the development of improved guidance for specifying MOBILE4 inputs. Two major factors are considered: (1) the likelihood and potential range of variability in values for each MOBILE4 input; and (2) the potential magnitude of the effect of these variations, in terms of impact on typical mobile source inventories. The analysis updates previous work based on MOBILE3 by using MOBILE4 for the sensitivity analysis and by adding new MOBILE4 variables. The approach used in previous work is modified to address the specific concerns of the project--the State Implementation Plan (SIP) and National Emissions Data System (NEDS) inventory/guidance context. An additional level of detail is included for two critical variables (speed and temperature). Sensitivity to basic vehicle inspection/maintenance program specifications (waiver and compliance rate) is also considered. The primary sensitivity analysis is structured around two base cases representing ozone and carbon monoxide (C) season conditions. The report describes: (1) MOBILE4 input variable values for the ozone and CO base cases, (2) the variables and ranges or alternate values applied in the sensitivity analysis, (3) sensitivity analysis results, and (4) conclusions.
Cover title. Performing organization: Alliance Technologies Corporation. Includes bibliographical references (p. 15). "EPA-600/8-91-032." "April 1991." "EPA Contract No. 68-D9-0173, Work Assignment No. 0/109 and 1/106"--T.p. "Project Officer: Carl T. Ripberger"--T.p. Photocopy.