Record Display for the EPA National Library Catalog
RECORD NUMBER: 21 OF 25
|OLS Field Name||OLS Field Data|
|Main Title||Seasonal and monthly activity allocation fractions for nonroad engine emissions modeling.|
|CORP Author||Environmental Protection Agency, Washington, DC. Air and Radiation Div.|
|Publisher||Assessment and Standards Division, Office of Transportation and Air Quality, U.S. Environmental Protection Agency,|
|Report Number||EPA 420-P-04-004|
|Subjects||Automobiles--Motors--Exhaust gas--Quality control--Research.|
|Additional Subjects||Air pollution control ; Estimates ; Annual activity ; Seasonal activity ; Inventories ; Calculations ; Modeling ; Nonroad engine emissions ; NONROAD ; Activity allocation fractions ; Environmental Protection Agency ; Nonroad air emissions inventory model|
|Edition||Revised April 2004.|
|Collation||1 online resource (18 pages)|
The EPA has developed a national nonroad air emissions inventory model called NONROAD. The model uses estimates of annual activity for each equipment type, e.g., generally expressed in terms of hours of operations or gallons of fuel used per year, to calculate yearly emission inventories. It will also calculate inventories on a seasonal (i.e., summer, fall, winter, spring), monthly, or daily (i.e., week or weekend day) basis by allocating annual activity to these smaller time periods. This memorandum documents the seasonal and monthly activity allocation fractions used by the model. Daily activity allocation fractions are addressed in a separate technical memorandum. The EPA currently considers these fractions to be final inputs for the draft NONROAD2004 model.
Title from title screen (viewed on Feb. 29, 2016). "NR-004b." "EPA420-P-04-004." "Supersedes EPA420-P-02-010." Includes bibliographical references.