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 modeling
for future SBR event