---
abstract: 'Forecasting Solar Energetic Particle (SEP) fluence, as integrated over
  an SEP event, is an important element when estimating the effect of solar eruptions
  on humans and technology in space. Current real-time estimates are based on SEP
  measurements at a single location in space. However, the interplanetary magnetic
  field corotates with the Sun approximately 13\textdegree each day with respect
  to Earth, thus in 4 days a near-Earth spacecraft will have changed their connection
  about 60\textdegree from the original SEP source. We estimate the effect of the
  corotation on particle fluence using a simple particle transport model, and show
  that ignoring corotation can cause up to an order of magnitude error in fluence
  estimations, depending on the interplanetary particle transport conditions. We compare
  the model predictions with STEREO observations of SEP events.'
adsnote: Provided by the SAO/NASA Astrophysics Data System
adsurl: https://ui.adsabs.harvard.edu/abs/2018IAUS..335..298L
archivePrefix: arXiv
authors:
- T. Laitinen
- S. Dalla
- M. Battarbee
- M. S. Marsh
booktitle: 'Space Weather of the Heliosphere: Processes and Forecasts'
category: publications
date: '2018-08-01'
doi: 10.1017/S1743921317008936
draft: false
editor:
- first: Claire
  last: 'Foullon'
- first: Olga
  last: 'Malandraki'
  middle: E.
eprint: '1802.10086'
featured: false
month: August
pages: 298-300
primaryClass: physics.space-ph
projects: []
publication: 'Space Weather of the Heliosphere: Processes and Forecasts'
publication_types:
- '2'
tags:
- 'Sun: particle emission'
- Interplanetary medium
- Diffusion
- Physics - space physics
- Astrophysics - solar and stellar astrophysics
title: 'Forecasting Solar Energetic Particle Fluence with Multi-Spacecraft Observations'
type: INPROCEEDINGS
volume: '335'
year: '2018'
---