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Visualization Environment for Rich Data Interpretation
AMAD Research Programs
Linking Air Quality to Ecosystem Exposure
VERDI is a flexible, modular, Java-based program for visualizing multivariate gridded meteorology, emissions, and air quality modeling data created by environmental modeling systems such as the Community Multiscale Air Quality (CMAQ) model and the Weather Research and Forecasting (WRF) model. VERDI offers a range of options for viewing data including 2-D tile plots, vertical cross sections, scatter plots, line and bar time series plots, contour plots, vector plots, and vector-tile plots. Scripting capability in VERDI provides a powerful interface for automating the production of graphics for analyzing data.
VERDI was developed for the EPA by Argonne National Laboratory and is currently supported by the Community Modeling and Analysis System (CMAS) Center, which is hosted by the Institute for the Environment at the University of North Carolina at Chapel Hill and can be downloaded from the CMAS VERDI website 
. VERDI is an open source program and community involvement in further development is encouraged. VERDI is licensed under the Gnu Public License (GPL) version 3 and the source code is available through SourceForge .
VERDI tile plot of hourly surface ozone
VERDI scatter plot of annual oxidized nitrogen wet deposition vs oxidized nitrogen dry deposition
VERDI time series plot of hourly surface ozone for a selected cell.
VERDI contour plot of hourly surface level ozone
Contacts: Donna Schwede
Relevant Publications & Presentations:
Schwede, D., N. Collier, J. Dolph, T. Howe, M. Bitz. A New Tool for Analyzing CMAQ Modeling Results: Visualization Environment for Rich Data Interpretation (VERDI). 6th Annual CMAS Conference, October 1-3, 2007, Chapel Hill, North Carolina(abstract and presentation)