Virginia Climatology - PET and PET-P         [Climate - Weather - Soils ]

Peter Sforza
Dept. of Plant Pathology, Physiology, and Weed Science
Virginia Tech


Climate grids are 30-year means of PET or PET-P calculated using the Thornthwaite method and PRISM climate grids. The Forsythe model was used in estimating average day lengths for each month.  


The following images are for PET and PET-P in June, July, and August as an example. PET-Precipitation (PET-P) provides information on moisture deficit, where a positive value indicates moisture stress and a negative value indicates moisture surplus.

Links of interest:

NOAA economic report May 2002 http://205.156.54.206/pub/com/NOAAeconomicstatistics0402.pdf

[Climate - Weather - Soils ]

Last updated February 20, 2004
All content by Peter Sforza
Dept.of Plant Pathology, Physiology, and Weed Science
Virginia Tech