Linking the Eta Model with the Community Multiscale Air Quality (CMAQ) Modeling System to Build a National Air Quality Forecasting System

• DOI: 10.1175/waf855.1
• Publication Date: 2005-06-28T16:16:01Z
• Authors: Tanya L. Otte; George Pouliot; Jonathan E. Pleim; Jeffrey O. Young; Kenneth L. Schere; David C. Wong; Pius C. S. Lee; Marina Tsidulko; Jeffery T. McQueen; Paula Davidson; Rohit Mathur; Hui-Ya Chuang; Geoff DiMego; Nelson L. Seaman
• Keywords: CMAQ

Abstract NOAA and the U.S. Environmental Protection Agency (EPA) have developed a national air quality forecasting (AQF) system that is based on numerical models for meteorology, emissions, chemistry. The AQF generates gridded model forecasts of ground-level ozone (O3) can help forecasters to predict alert public onset, severity, duration poor conditions. Although efforts existed in metropolitan centers many years, this provides guidance product first-ever (predominantly rural) areas United States. currently NCEP’s Eta Model EPA’s Community Multiscale Air Quality (CMAQ) modeling system. system, which was implemented into operations at National Weather Service September 2004, twice-daily O3 northeastern States 12-km horizontal grid spacing. Preoperational testing support 2003 2004 forecast seasons showed provided valuable could be used process. will expanded over next several years include nationwide domain, capability fine particle pollution, longer period. State local agencies now issue are based, part, from This note describes process software components link CMAQ discusses technical logistical issues were considered, examples