Progress and Prospects for an Enlil-Based Sep Event Model for the Inner Heliosphere

Abstract:

Solar energetic particle (SEP) event modeling has received
more attention in recent years in part due to the approach
to a new solar maximum, and in part due to increased availability
of multipoint measurements during the STEREO mission. The increased
understanding of CMEs as SEP sources and heliospheric structures,
and more available detailed, observation-driven numerical
simulations of the heliosphere have also revolutionized the
prospects for modeling these events throughout the solar system.
At the same time, several planetary missions have made SEPs
part of their instrument and science goals. In particular,
Messenger carries an energetic particle detector in orbit
around Mercury, Mars Odyssey carried the MARIE radiation
detector around Mars until it was lost following the great
events of fall, 2003, and MSL includes the RAD experiment-
for the first time measuring the near-surface consequences
of SEP events. MAVEN has most recently entered Mars orbit
with an explicit science objective related to space weather
effects at Mars-and also carrying an SEP detector. We consider
how current understanding of SEP events and models can be
brought to bear on these measurements throughout the solar
system-toward better understanding of SEPs and their prediction
for future space missions.