AERMOD - History of The Development of AERMOD

History of The Development of AERMOD

AERMOD was developed by the AERMIC (American Meteorological Society (AMS)/United States Environmental Protection Agency (EPA) Regulatory Model Improvement Committee), a collaborative working group of scientists from the AMS and the EPA. The AERMIC was initially formed in 1991.

The AERMIC developed AERMOD in seven steps:

  • Initial model formulation
  • Developmental evaluation
  • Internal peer review and beta testing
  • Revised model formulation
  • Performance evaluation and sensitivity testing
  • External peer review
  • Submission to the EPA for consideration as a regulatory model.

On April 21 of 2000, the EPA proposed that AERMOD be adopted as the EPA's preferred regulatory model for both simple and complex terrain. On November 9 of 2005, AERMOD was adopted by the EPA and promulgated as their preferred regulatory model, effective as of December 9 of 2005. The entire developmental and adoption process took 14 years (from 1991 to 2005).

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