The CALPUFF model can use three-dimensional meteorological fields developed by the CALMET model from prognostic and observational data. These spatially-varying meteorological variables can transform puffs as the model calculates concentrations and deposition fluxes.
Modelers can easily visualize the wind field in two and three dimensions for the entire meteorological grid with CALPUFF View. The new CALPUFF View Version 5.0 allows users to generate a wind rose for any meteorological grid cell. Other meteorological variables can also be analyzed in the time series file that is generated.
Follow the simple steps below to create a custom wind rose in CALPUFF View Version 5.0:
Step 1: After successfully running CALMET (or importing a CALMET.DAT file into CALPUFF View), select the Wind Rose Tool on the Annotation Toolbar.
Step 2: Click the left mouse button on the drawing area, at the location where you want to generate a wind rose. The Wind Rose Tool dialog is displayed.
Step 3: The X and Y coordinates and met grid cell numbers of the selected location are displayed in the Specify Location for Wind Rose panel. You can change these values at any time if you desire. Select the vertical layer from the Vertical Layer drop-down list as well as the Start and Ending Date & Time.
Step 4: The Extra Data options include additional parameters which may be extracted from the CALMET.DAT file. Place a check in the box next to any additional parameters you want to extract. While these parameters will not be plotted, they are written to the time series file (*.dat) in ASCII/text format.
Step 5: The Save Output Met File As panel displays a default name for the data file that is generated. You can change the default name and location if you wish. This file will be saved in a time series format and contains the data extracted from the CALMET.DAT file for the selected met grid cell and specified vertical layer.
Step 6: The generated data file is displayed as a wind rose in WRPLOT View. Besides the graphical wind rose, WRPLOT View presents tabular distribution data, graphs of wind distribution, and the ability to export the wind rose to Google Earth.