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fDesc[0] = ""NONROAD2008" is the overall version designation for the set of modeling files including the core model, default data files, graphical user interface (GUI), and reporting utility, released in April 2009. NONROAD2008a is essentially the same model, but with one small correction to the NOx emission factor data file which decreases the NOx emissions from land-based diesel engines by roughly 1 percent in 2007 (less in later years), which matches the emissions generated by NONROAD2005. The only change to the core model (nonroad.exe) is a change in the version number that gets included in the output files and reports generated by the reporting utility.";

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