About the EQUATES category

EQUATES: EPA’s Air QUAlity TimE Series Project

EPA scientists have developed a set of modeled meteorology, emissions, air quality and pollutant deposition spanning the years 2002 through 2017. Modeled datasets cover the Conterminous U.S. (CONUS) at a 12km horizontal grid spacing and the Northern Hemisphere at a 108km grid spacing using the Weather Research and Forecasting (WRF) model version 4.1.1 for simulating weather conditions and EPA’s Community Multiscale Air Quality (CMAQ) model version 5.3.2.1 for air quality modeling. New hemispheric and North American emissions inventories were developed using, to the extent possible, consistent input data and methods across all years, including emissions from motor vehicles, fires, and oil and gas sources.

EQUATES meteorology, emissions, and air quality modeling datasets have been packaged to meet various collaborator needs and are available to download from the CMAS Data Warehouse.

Please use this category on the CMAS User forum for questions about the EQUATES datasets, EQUATES tutorial, and EQUATES sample run scripts. General questions about installing and running CMAQ should be directed to other CMAQ categories, e.g. CMAQ – Run Time Errors and Issues.

To post a new topic, browse to the CMAS Forum main page, select ‘+ New Topic’ and choose EQUATES as the category before posting. Please make sure to read this ‘Best Practices’ post before submitting your topic.

To receive notifications of announcements related to EQUATES or questions posted under the EQUATES category, browse to the EQUATES topic page and click on the bell icon, then select ‘Watching’, ‘Tracking’, or ‘Watching First Post’.