Record Display for the EPA National Library Catalog
RECORD NUMBER: 69 OF 251
|OLS Field Name||OLS Field Data|
|Main Title||CMB8: New Software for Chemical Mass Balance Receptor Modeling.|
|Author||Lewis, C. W. ;|
|CORP Author||Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.|
|Additional Subjects||Air pollution monitoring ; Receptors ; Mathematical models ; Computerized simulation ; Air pollutants ; Ecological concentration ; Formats ; Algorithms ; Input output routines ; Computer systems programs ; CMB8 computer program ; Chemical mass balance ; Volatile organic compounds|
The Chemical Mass Balance (CMB) method for receptor modeling of ambient air pollutants has been in use for over two decades. Changes embodied in CMB8 include (1) switch from a DOS-based to a Windows-based environment, (2) increased attention to volatile organic compounds (VOC) applications, (3) correction of some flaws in the current version (CMB7), (4) more options for input and output data formats, (5) addition of a more accurate least squares computational algorithm, (6) a new treatment of source collinearity, (7) multiple defaults for sources and fitting species, and (8) choice of fitting criteria. Details of the changes and the procedures for obtaining CMB8 are given.