We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Atmospheric Model Evaluation Tool for meteorological and air quality simulations

What is the Atmospheric Model Evaluation Tool (AMET)?

The Atmospheric Model Evaluation Tool (AMET) compares model predictions to observed data from various meteorological and air quality observation networks to help evaluate meteorological and air quality simulations. 

What are the benefits of using AMET?

AMET reduces time and effort by automatically paring model data to observed data. The paired data are stored in databases to allow for quick access of information. It provides easy-to-modify scripts and pre-constructed scripts that can be used for generating plots and statistics from any model simulation stored in the database. AMET provides a set of common analysis scripts that the community can use to provide familiarity and consistency among the many groups in the community that evaluate model simulations.

Who should use AMET?

AMET is best suited for users who want to evaluate meteorological and air quality simulations, primarily the Weather Research and Forecasting (WRF) model and the Community Multi-scale Air Quality (CMAQ) model, although other models can be used with AMET.

How Does AMET Work?

AMET utilizes an open source relational database program and an open source statistical program to store and analyze model predictions against observations. AMET is currently script based, and includes numerous scripts for performing common analysis such as scatter plots, box plots, spatial and time series plots, and output of many different statistics.  

Download Now:

AMET is available for download from the Community Modeling and Analysis System (CMAS) website. EPA instituted the CMAS website in 2001 to provide community air quality modeling support, sharing of ideas and techniques through communication, and to encourage the growth of the community. It is currently operated under contract by the University of North Carolina at Chapel Hill’s Institute for the Environment.

Technical contacts: