Modeling Tips
Posts category: modeling-tips
24
Oct 2024
AERMOD View - AERMET’s New Upper Air Data Format – IGRA
Late on the evening of September 26, 2024, Hurricane Helene made landfall in Florida’s Big Bend region. A Category 4 storm at the time, the storm caused significant extensive impacts to the southeastern United States with significant impacts in western North Carolina. The National Oceanic and Atmospheric Administration’s (NOAA) National Centers for Environmental Information (NCEI) headquartered in Asheville, NC faced power outages and loss of network connectivity for a period of several weeks following the storms dissipation.
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.
