1. Miho Janvier (IAS) & Ben Lynch (UCB)
Summary – Monday 24, 2017
S12: Understanding the Structure and Morphology of Coronal Mass Ejections by Integrating Observations and Modeling
Mulligan et al. (2013)
Janvier et al. (2015)
Scene Setting Talks:
Miho Janvier (IAS) & Ben Lynch (UCB)
1st Part:
How Good are the In Situ Observations of 3D CME/ICME FRs?
2nd Part:
3D CME FR Orientation From Source Region Configuration
3D CME FR Orientation From Corona + Inner Helio Obs/Model
3rd Part (Future - Thursday)
ICME Heliospheric Propagation & Evolution (!)

2. 1st Part: How Good are the In Situ Observations of 3D CME/ICME FRs?
S3: Understanding the Structure and Morphology of Coronal Mass Ejections by Integrating Observations and Modeling
1st Part: How Good are the In Situ Observations of 3D CME/ICME FRs?
How good the in-situ data works for ICME reconstruction?
(B. Jackson) Discussion about how good is the in-situ data. Discrepancies between in situ data from two close s/p.
In-situ reconstruction models and techniques.
Boundaries – (M. Haw) how can the in-situ reconstruction can be affected by the choice.

3. S3: Understanding the Structure and Morphology of Coronal Mass Ejections by Integrating Observations and Modeling
2nd Part: 3D CME FR Orientation From Source Region Configuration Active Region PILs, Filament Orientation, EUV Dimmings, Flare Loop Orientation, Reconnection Flux Content, Magnetic Helicity, etc
(B. Wood) – Discussion about the not clear solar source of some kind of CMEs, such as stealth CMEs. Clear in-situ and corographs flux-ropes but not clear solar source signatures.
Terminology conflict or clarifications (K.D. Leka), what are the magnetic clouds, flux-rope
Discussion about twisting/helicity – (P. Demoulin) pointed out that most of the twisting is coming during the ejection due to reconnection process underneath of the overlying magnetic field.
Internal reconnection – (J. Drake), most of the reconnection in the solar wind is happening inside of the flux-rope because of the low beta plasma.
Force-free (P. Demoulin, B. Lynch, M. Linton, P. Bellan): The FR may not be in equilibrium because is expanding faster.
Pancaking (P. Demoulin, B. Wood, J. Drake) – numerical model can show cases of strong pancaking but the observations say that is not as extreme as the models suggest.

4. Correlation between flux-ropes reconstructions.
S3: Understanding the Structure and Morphology of Coronal Mass Ejections by Integrating Observations and Modeling
3rd Part: 3D CME FR Orientation From Corona + Inner Helio Obs/Model White-Light Coronagraph Structures, 3-Part CMEs, Halo-CMEs, etc
Correlation between flux-ropes reconstructions.
Flux-rope models for different data but not consistency between all view points.
How do we use different data for reconstructions? How do we use properties to define flux-ropes? We are using indications of flux-ropes but not real -- ‘we are close to the right thing but constantly out of the real thing.’
Christina Kay – Looking deflection/rotation effect using the PFSS technique to get the source orientation and FORECAT model to get the propagation, found consistency between the events orientation (longitude, latitude, tilt).
Brian Wood – Showed a comparative reconstruction using a list of Earth directed events. There is a strong discrepancy between models.