What is the Visual Environment for Rich Data Interpretation (VERDI) Tool?

VERDI is a flexible, modular, Java-based program used for visualizing multivariate gridded meteorology, emissions and air quality modeling data created by environmental modeling systems such as the Community Multi-scale Air Quality (CMAQ) model and the Weather Research and Forecasting (WRF) model.

What are the benefits of using VERDI?

VERDI provides an easy way to visualize and analyze multivariate gridded data for environmental modeling systems. The software can be used interactively or via a scripting interface. Users can create a number of graphical outputs using VERDI, including tile plots, scatter plots, time series plots and vector plots. Additionally, VERDI provides capabilities for performing spatial analyses such as using the gridded data to determine deposition to watersheds. VERDI offers multiple output formats options for creating publication quality graphics, text files and shapefiles.

Who should use VERDI?

VERDI is a community-based program primarily used by environmental modelers seeking to analyze meteorological or air quality data. Contributions of code for other applications are welcome.

How does VERDI work?

VERDI can be used on Windows, Linux and Mac operating systems using the Graphical User Interface (GUI). Users can select a data set, either their own or a sample set provided in the software, to input. The interface will list the variables available for analysis as well as available plot types. Users can create plots and modify plot features like titles and colors. They can also create new variables to plot using the formulas pane. These plots can be exported in a variety of formats suitable for publication. Most of the plotting capabilities are also available using the scripting language. 

Download Now:

• CMAS: VERDI Exit

Technical Contact: 

• Donna Schwede (schwede.donna@epa.gov)