Session 8 - Radiation Environments

Rami Vainio (Univ. of Turku); Yuri Shprits (GFZ/UCLA)
Tuesday 19/11, 11:15-12:30 & 17:15-18:30
Thursday 21/11, 11:15-12:30
Mozane 789

Particles trapped in the radiation belts and carrying the ring current are hazardous to satellite electronics and can produce surface charging and deep dielectric charging.

Traditional models of the Earth’s radiation belts are divided into physics-based models describing the transport, acceleration, and loss processes and specification models based on a variety of historical data sets. New efforts are looking to merge these approaches to arrive at a more complete description of the radiation belt environment for the purposes of specification, now-casting, and forecasting.

Solar Energetic Particle (SEP) events are sporadic outbursts of particle radiation from the Sun and constitute the most prominent source of energetic proton radiation at MeV to GeV energies in interplanetary and near-Earth space, outside the Earth's radiation belts.

The standard SEP environment models are empirical probabilistic models that give the cumulative or worst-case fluence or proton peak flux for a mission with specified length at a user-specified confidence level.

Recent developments in SEP environment modelling have extended the energy range of protons beyond 300 MeV to the GeV and for ion species to cover from hydrogen to heavy ions. SEP modelling efforts have also extended from probabilistic modelling from over the duration of the mission towards short-term predictions of the occurrence and fluxes of SEP events, based on various solar observations. The third component of the radiation environment is Galactic Cosmic Rays (GCRs), which varies slowly with the solar cycle and more rapidly as a result of Forbush Decreases resulting from Interplanetary Coronal Mass Ejections (ICMEs).

The session will cover a broad range of topics related to the near-Earth and interplanetary radiation environment, and its effects on satellites.
We invite contributions related especially to:
• Specification of the radiation belt, ring current, GCR and SEP environments;
• Describing the new data sources or tools for data processing and analysis;
• Predictive models that can be adopted for operations;
• Data assimilation models allowing to reconstruct the evolution in the past.

Tuesday November 19, 11:15 - 12:30, Mosane 789
Tuesday November 19, 17:15 - 18:30, Mosane 789
Thursday November 21, 11:15 - 12:30, Mosane 789

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Talks : Time schedule

Tuesday November 19, 11:15 - 12:30, Mosane 789
11:15Spectra and angular distribution of relativistic SEP particles derived using neutron monitor data Mishev, A et al.Oral
11:30Propagation of relativistic protons from solar eruptive eventsDalla, S et al.Oral
11:45What will the intensity-time profiles of SEP events look like? An answer from the ESA’s SAWS-ASPECS projectAran, A et al.Oral
12:00SEP Scoreboard Mays, L et al.Oral
12:15ISEP: A Joint SRAG/CCMC Collaboration to Improve Space Weather Prediction for Crew Protection during Near-Term Lunar Surface and Cis-Lunar MissionsLee, K et al.Oral

Tuesday November 19, 17:15 - 18:30, Mosane 789
17:15Comparison Of On-board Measurements With AP8 and AE8 Models Of Charged Particles FluxesProtopopov, G et al.Oral
17:30AE9/AP9-IRENE Radiation Environment Model: Future Development Plans and NeedsO'brien, P et al.Oral
17:45Identifying and Classifying Radiation Belt Enhancement EventsReeves, G et al.Oral
18:00Long-term simulation of radiation belt protons above 10MeVBrunet, A et al.Oral
18:15Coupled Dynamics of the Ring Current and Outer Radiation Belt Relativistic Electron FluxesKalegaev, V et al.Oral

Thursday November 21, 11:15 - 12:30, Mosane 789
11:15The pivot energy of Solar Energetic Particles contributing to the Martian surface radiation environmentGuo, J et al.Oral
11:30Poster presentationsVainio, R et al.Oral
11:45Applications and Models for Satellite Anomaly AnalysisGreen, J et al.Oral
12:00User-Oriented Model Validation Efforts for Radiation Belt Electrons: Internal Charging ApplicationsZheng, Y et al.Oral
12:15Future key areas for the trapped and solar radiation - summary discussionShprits, Y et al.Oral


1To soft gamma-rays variations in the atmosphere during precipitationsBalabin, Y et al.p-Poster
2Mobile complex for registration of some components of SCRBalabin, Y et al.p-Poster
3On the cause of relativistic electron acceleration in the outer Van Allen beltKatsavrias, C et al.p-Poster
4The UTU-SEP Products in ESA's Space Radiation Expert Service CentreVainio, R et al.p-Poster
5Experimentally obtained time-intensity profiles of high energy protons in solar energetic particle eventsVainio, R et al.p-Poster
6Energetic electrons in Van Allen radiation belts: Linking with geospheric conditionsNiemelä celeda, A et al.p-Poster
7Radiation Environment and risks during human exploration of habitable sites on Mars during Solar maximum, minimum and under the October 2003 eventsDa pieve, F et al.p-Poster
8Chorus wave interactions with ultra-relativistic electronsAllison, H et al.p-Poster