Modeling Tips
Posts category: modeling-tips
26
Sep 2024
AERMOD View - Custom Terrain Data
AERMAP is the terrain preprocessor program for incorporating terrain elements into air dispersion modeling analyses conducted using the AERMOD dispersion modeling system. Natively, AERMAP reads two types of terrain data.
22
Aug 2024
AERMOD View - Understanding 1-Hour NO2 & SO2 NAAQS Options
In 2010, the United States Environmental Protection Agency (U.S. EPA) revised the National Ambient Air Quality Standards (NAAQS) for short-term nitrogen dioxide (NO2) and sulfur dioxide (SO2). Due to the unique forms of these standards – which are based on annual distributions of daily maximum hourly concentrations as opposed to the distribution of all hourly values – the AERMOD air dispersion model had to be updated to perform calculations accordingly.
24
Jul 2024
Run CALMET in Parallel with CALPUFF View
One limitation of the CALPUFF air dispersion model is that it can only be executed on a single processor (i.e., serially). Previous modeling tips have discussed ways around this limitation. For example, executing CALPUFF with a single source will run faster than attempting to model multiple sources at a time. Modelers can then employ CALSUM to assess cumulative impacts. This approach has the added benefit of providing a way to assess individual source contributions.
