Comparison of a Revised Area Source Algorithm for the Industrial Source ComplexShort Term Model and Wind Tunnel Data

摘要

The report summarizes the results of comparison between a new numericalintegration algorithm for modeling area source dispersion, as implemented in the Industrial Source Complex Short Term (ISCST2) model using wind tunnel data collected in the U.S. Environmental Protection Agency's Fluid Modeling Facility. Area sources referred to can be characterized as low level releases with little buoyance due to either momentum or temperature such as landfills or lagoons that are commonly found at superfund sites. The results of the analyses show that the new ISCST2 area source algorithm predicts the concentration distribution with relatively good accuracy, especially for ground-level area sources. The conclusion seems also valid for the various source shapes and orientations thus suggesting the ability of the model to accurately depict the plume shape for complex source-receptor geometries.