Industrial Source Complex (ISC3) Dispersion Models. Volume 1. User Instructions.Addendum

摘要

This document provides user instructions for recent enhancements of the ISCST3model, including the most recent version dated 00101 (April 10, 2000). The enhancements described in this Addendum include changes to the processing of multi-year averages for post-1997 PM10 NAAQS analyses, enhancements to the model which were formerly available in draft form as ISCST390 (dated 97365), enhancements to the model for air toxics applications, and an option to specify variable emission rate factors that vary by season, hour-of-day, and day-of-week. The enhancements from the draft ISCST390 model include a conversion to Fortran 90 in order to make use of allocatable arrays for data storage, incorporation of the EVENT processing from the ISCEV3 model, an INCLUDED keyword option for the source, receptor and event pathways, and two new options for specifying area sources. The use of allocatable arrays provides much more flexibility for the end user of the ISCST3 model.