One of the active modeling systems adapted to monitor the movement of P. pachyrhizi is the Hybrid Single-Particle Lagrangian Integrated Trajectory, or HYSPLIT model (15). The HYSPLIT model is maintained by the National Oceanic and
Atmospheric Administration (NOAA) Air Resources Laboratory,and was originally intended to track the atmospheric transport and deposition of pollutants and hazardous materials on wind currents from a known point source (15). The HYSPLIT model was adapted for use with SBR, and creates a three-dimensional prediction of possible spore dispersal and concentration using wind current data available from NOAA. Initially, this and other experimental spore deposition models were available to university specialists having access to a secure and restricted website within the SBR-PIPE platform. These models predicted potential inoculum dispersal and spread using confirmed disease observations from the monitoring
program. Based on model predictions, additional scouting occurred in areas of putative inoculum deposition. Field observations from the disease-monitoring program are the most important data used to develop predictive models for SBR development (2,31,37,72,81). The HYSPLIT model is often used in predictive modelingfor future SBR events